Author Topic: Assembling my '74 CB550 - Putting it all back together  (Read 147087 times)

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Offline SohRon

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #25 on: May 18, 2011, 09:15:05 PM »
Well, thanks for the kind responses. Ecosse, you always know exactly what to say... thanks for checking in, and let's hope there are no "Roller Coaster" rides with this one.

As far as magazines go, this here forum is just that: one big international magazine that anyone can post to!

I haven't been very rigorous about checking this forum for responses to the thread... as usual, I'm pretty busy and don't get a lot of time to spend perusing the threads (which is what I'd rather be doing); I did check in a couple of times but, as I never caught this thread on the first page, I thought it was lost in the depths of the Project Shop. And, yesterday when I posted, SWMBO was standing at the door waiting to leave for dinner, tapping her foot and glancing at her watch, so I just hit the "POST" button and ran. What this all means is that I didn't see the great replies preceding this post until today. I'd like to take some time to address them... 


"I don't know why your powder coat is "fragile". Yes they attract dust and finger prints but no way should it be scratching that easy. Thankfully I've never had a powder coated frame do that to me."

"..if the paint on the frame is so brittle aren't you worried about parts which need to flex in order to work, fork tube clamp area on the bottom headstock is one example, as they tighten will the paint crack off?"

When I say the powder coat is "scratching", I don't mean great gouges or stuff that even goes through the clear coat, and certainly the powder coat isn't by any means "brittle" as is evidenced by the fact that I had to use a file to get down to bare metal when clearing it for electrical grounding purposes. In new, pristine condition the frame looked wet; this is a super high gloss powder coat, and the color is very deep and glossy. But the clear coat seems to be kind of soft, and picks up small surface abrasions just from handling. For the most part, these are so slight that they only appear in certain kinds of light and at certain angles; and it's always easier to see something if you know it's there. Although the frame still looks good, as you can see in the above pics, I'm not sure exactly what to think about this... do you think I got a bad powder coat job?

Anyway, even without the abrasion problem the gloss is just too glossy for my tastes (and for an original look), so I still plan to have it redone semi-gloss sometime in the future.



"...while i wouldn't go back to ball bearings for my 550 i respect you sticking with originality."

I don't know, Ecosse; most folks haven't been exposed to new ball bearings. While the superiority of tapered bearings to ball bearings in certain situations is unquestionable, I still think ball bearings are getting a bum rap because of all of the poorly maintained head sets out there.  With the new bearings, the steering is as smooth as glass without any notchyness (is that a word?) or centering problems. I'm going to use tapered bearings on the next build, so I'll get a good side-by-side comparison then.



"...are you intending to go the whole hog and even refit the frame stickers?"

I'm going to replace all of the stickers, even some that aren't currently available (like the inspection stickers on the fork bottoms, for instance), which I'm having recreated.

"...what are you doing about the steering lock?"

It's there... just painted black for the moment. I'll be addressing it later in the build.

"...I tend to change parts which IMO Honda didn't get right in the first place"

I'd like to strangle the guy who thought it would be a good idea to put the engine together with Philips head screws...


Anyhow, thanks for all of the responses, and I'll try to be more diligent in future as far as checking the site is concerned.


"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline Stev-o

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #26 on: May 30, 2011, 06:58:46 AM »
have we run out of superlatives to describe your documentation prowess yet?


Yes, I believe we have! Great job, Ron.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline SohRon

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #27 on: May 30, 2011, 11:01:44 AM »
Thanks, Stev-o; I try. As you and other veterans of this build know, when I started this project back oh so many years ago now, I was at a loss as to just exactly how things went back together. I researched this site and others in an attempt to get a good overall view as to how that was accomplished and came up sorely wanting; oh sure, there are lots of hints here and there, but no good overall view as to re-assembly of the entire bike. There are lots of questions a newbie has that are hard to ask and are second nature to most of the experienced builders here (Where does that hockey puck thing go? What is that "J" shaped sheet metal dealybob with the dimpled hole in one end for... etc, etc), so I decided that I would use my project as a sort of example of how it might be done. While I'm no expert and don't claim to be (every time I've come close to stepping over that line I've been firmly set back in my place... I try not to be flippant, but I'm only human), I have done a lot of research and asked a lot of questions and am fairly confident in about 95% of my methods; with the help of the amazing talents on this site, I hope to get that extra 5% right, too.

I know this is a different kind of a thread from the usual in that it covers methodology over maintenance, and so doesn't generate a lot of questions, but if you do have one, or know of a different way to do something, or see me doing something wrong, I urge you to participate. There are newbies (like me) picking up these bikes every day who are tearing them apart and find they have no clue when they try to put the thing back together (probably one of the worst things they do is to try and rely on a copy the Clymer book).  I'm trying to cover as many of the nuts and bolts as I can, so that a solid base of assembly procedure is available for everyone, and my main concern is that it contains no misinformation. In my vision of the perfect world, I'd provide the pictures while someone like Hondaman or Two Tired would cover the text. Since I don't believe that is gonna happen soon, I'm counting on everyone else to help keep my version of things on the right track...

Thanks to all who have visited this thread. I'll be updating in the next week or so, so I'll see you then.
« Last Edit: July 29, 2011, 12:50:00 PM by SohRon »
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline lone*X

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #28 on: May 31, 2011, 12:35:59 PM »
I'm lovin this build so much.  This is the first one I look for when I click on the Project forum.  Time in the shop has been my biggest challenge in putting my 550 back together so I am going to lean on your experiences heavily so I don't mess up when it all goes back together.   Your photo skills match your writing skill and make it all clear and understandable.  I can't get enough of the opening shot of all the 550 parts spread out.  Would you have a high res version of that photo you could post a link to?  I would like to blow it up to display full screen on a 24" monitor.
Lone*X  ( Don )

75 CB550K1  
VTX1800C for two up cruisin.
Several others have come and gone but whose keeping track.
52 years on two wheels and counting.....
"The best safety feature of any motorcycle is the one God put between your ears.  It's also the least utilized"

Offline SohRon

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #29 on: June 01, 2011, 05:44:13 PM »
Don, thanks for the kind compliments and it's good to hear you're making progress.  As far as the first pic is concerned, I'm afraid the 800x700 enlargement is as good as it gets, at least in this form. It could probably blow-up just a bit more, so you might give it a try just as it is and play around with the screen "fit".

"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline RAFster122s

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #30 on: June 01, 2011, 06:26:17 PM »
Since the original thread is gone and memory being what memories tend to be. Can you refresh my memory on your front forks...is that highly polished aluminum or chrome_plated? How did you Polish them to that lustre...sanded with which grades before polishing with which compounds?
Thanks!  I'm enjoying watching this build.
David
David- back in the desert SW!

Offline SohRon

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #31 on: June 01, 2011, 10:20:53 PM »
David, I wish I could help you, but I bought those fork bottoms already polished off ebay. I do know that there have been some excellent threads on this site that cover polishing, several of which also reference external web sites that are quite informative, as well. Do a search; there have been so many it should be easy pickin's.

And, thanks for participating!
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Online CycleRanger

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #32 on: June 15, 2011, 07:24:57 PM »
Wait, what!? How did I miss this thread!  Great photo skillz!  :)
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline SohRon

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Re: Assembling my '74 CB550 - Frame to Engine; Forks
« Reply #33 on: June 19, 2011, 10:43:16 PM »
Again, thanks for all of the comments and encouragement for this project. If it seems like I'm taking my time with this, I guess I am. When I realized there was no way I was going to be able to participate in the Rally, I slowed the pace somewhat and have allowed myself to drift off into other projects, some bike related, some not. I'm not in a huge hurry to finish this, as I'm not really building a daily runner here, but am approaching the process more as a hobby than a necessity; however, I will post as I can.


On to the build.

I'd like to get the center stand and the front wheel on and get the bike onto its own... well, maybe the centerstand would be closer to crutches than feet, but you get my drift. First order of business is to mount the fender. Here it is with all of its mounting hardware



The hardware consists of all of these little parts; 19 (or possibly 25), altogether. First off is the fender mounted speedo cable grommet; then six each of the rubber fender grommets; the small metal standoffs, or chain case collars; and the bolts & split washers. The split washers aren't required by Honda, but I recommend their use



Before assembly, I gave the whole inner fender a good shot of Boeshield, especially the inside of the stays, which are "always" rusty



I slipped the rubber grommets into the holes in the fender brace and stays...



...along with the case collars. The brace only gets grommets and collars on the right side as the caliper hanger is attached with the fender on the left



The grommet for the speedo cable just pops into a hole on the fender



Assembling the fender to the forks is pretty straight forward, actually. It's easy to slide it into the gap between the forks and align the bolt holes, after which it's a simple matter to install the fasteners. The ends of the fender stays fit into wells formed into the fork bottoms, and the fender brace attaches on the right side only for now



On the left side, I finished off the fender installation by adding the brake components. Notice that the caliper hanger is sandwiched between the fork leg and fender brace, and everything is attached with two 10mm bolts. The caliper adjusting "bolt" (screw, lower right) slides through a hole in the hanger...



...then screws into a threaded lug in the fork bottom, capturing the hanger arm return spring between the fork and caliper hanger. The bolt threads completely through the lug, where it is locked into place with a nut and washer



Next, the splash shield has a little box-like attachment point that fits down over the lower part of the hanger pin; I secured both shield and pin with a 12mm bolt



Here's the shield in place



And here, at last, is the fender installed.


Next, I moved on to the wheel: this is it. It's actually a '77 model as you can tell by the disc retainers. New bearings and rotor



In this case, due to the way I have the bike sitting on the dolly, mounting the wheel was just a matter of tipping the frame forward and the forks just kind of fell into position on the wheel



The axle nut is cut to accept the fork bottom



These are the axle clamps. They have an interesting profile in that one "leg" of the "U" is shorter than the other (you can view this by setting the clamp on a flat surface); this provides the clamping force that keeps the wheel on the bike. New nuts, washers and (especially) lock washers are an absolute must whenever you replace the wheel, at least in my opinion



I assembled the clamps to the fork with the long "leg" toward the front and the gap to the rear. The trick here is that you fully tighten the front nut before going to the rear nut. I started with the disc side...



...then did the same with the other side; gap to the rear, tightening the front nut first. The speedometer drive just kind of dangles there until the clamp is tightened. I'll set its position later; for now I'm just leaving it oriented in a roughly horizontal position



Adding the clamps completed the front wheel and fender installation.



Handlebars next. I have installed stock grips in place of the earlier foamy ones, and the right-hand switch has been rebuilt  ;)  . The left switch is a good stock unit I found on ebay



I've restored the bar clamp/dashboard. Chrome bolts are used for a stock installation



The bar simply sits in the cradle provided on the top steering yoke and the clamp fits down over it. The clamp/dash is similar in nature to the wheel clamps in that the front portion is longer than the rear, so installation procedure is the same: tighten the front bolts completely before doing the back ones, leaving the gap to the rear. The bars are positioned by two little punch marks on either side of the clamp that orient them; the marks should line up with the top of the cradle



Tightening the clamp bolts



I want to get this down off the dolly, so the next order of business is the center stand. I picked up this CS from the local boneyard and refinished it in POR-15 Base Coat with a topping of BlackCote (now POR-15 TOPCOAT "Gloss Black"). Here it is with all of its mounting hardware (note the lock washers)



This is a pretty simple installation, made even easier due to the fact that I don't have the swingarm to deal with. The CS just slides into place between the brackets on the frame, then the well-greased CS pivot pipe is inserted...



...and secured with a cotter pin



I then added the clamp bolts. No need to get too aggressive tightening these down, just get them tight enough to be secure. Once the bolts are in place, it's time to install the spring plate and spring; and here's where the beauty of installing these now comes into play. By rotating the CS legs up past horizontal (thanks to the missing swingarm), installing the plate and spring becomes child's play and they easily slide into position; the plate is oriented with the curve pointing down, large hole slipping over the bale on the frame, while the spring connects to the smaller hole on the plate, then to the notched tab on the CS. No money involved... just slide it on. Do it now or you'll regret it as that spring is a serious beeee-otch to assemble at any other point. Believe me. I know.



And, with that, I was able to pull the dolly out and set the bike down on the CS, just one more major step towards completion



Well, I've gone on for too long (as usual), and if you've managed to stay awake through all of this, I'm impressed. Next time I'll be doing the front brake, then tackle the swingarm and the rear wheel, and all of that should be loads of fun.

'til next time
« Last Edit: May 01, 2017, 05:11:36 PM by SohRon »
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline RAFster122s

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #34 on: June 19, 2011, 11:59:37 PM »
As always, great work and stunning finish on everything. Learned some things again in this installment.

I do hope you will have the bike properly appraised and insured for value as a beauty like this should be enjoyed and ridden without fear of the "what ifs"

Looking forward to the next installment.

BTW, did you have the fender rechromed, NOS, or how did you find such a beautiful condition example?

David
David- back in the desert SW!

Offline SohRon

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #35 on: June 20, 2011, 12:28:49 AM »
Thanks for the comments, David. Actually, I got the fender new from David Silver Spares... I want to say it cost around $250 when I bought it two years ago, but I think that's gone up since then. I'm pretty sure he still has them.
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline Oddjob

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #36 on: June 22, 2011, 03:58:45 PM »
Shame about the wheel weights, standard Honda weights were installed around the spoke nipples so the chrome was free to be cleaned. Got some bags of them around somewhere, went to order 1 of each and got 1 bag of every weight Honda did, cost me a lot even 30 years ago.
It's coming on nicely mate, reminds me an awful lot of when I restored my first one, the only problem I found when your restoring a bike to that level is patience, as it got nearer and nearer to being finished the urge to take it out for a spin grows stronger every week, I ended up taking it out with an old seat on just so I could see what it went like. It was everything I'd imagined and more, only stopped for a drink and got 3 offers to buy it as it was  :)  needless to say I didn't consider them seriously even though one offer was very generous.

Looking forward to seeing the finished article, stay strong and do it properly  ;)

Offline Nortstudio

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #37 on: June 23, 2011, 10:35:26 AM »
Joining in a little late, but better late than never.  Great photos, and great explanations! 

Quick question: do you mess with depth of field in the computer to make the foreground so sharp, and the background fall away? 

Can't wait to read the next installment.
1976 CB550K...in progress
1975 CL360...eventually custom
2009 Husqvarna TE610

a blog about wrenching in Brooklyn, NY

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Offline SohRon

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #38 on: June 24, 2011, 12:23:43 PM »
the only problem I found when your restoring a bike to that level is patience

Amen, brother! Since this isn't a daily rider, I'm finding it easier to just putter around with it.

...do you mess with depth of field in the computer to make the foreground so sharp, and the background fall away? 

Yes, I use Photoshop to do that - it's one reason it takes so long between posts. I think it helps focus on the subject at hand and makes details in the text a little clearer. It is tedious, though, especially when there are things like spokes involved...  It helps to have a good camera, too.

Thanks for the comments, guys!
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline FrankenFrankenstuff

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #39 on: June 24, 2011, 01:55:56 PM »
I appreciate the time you are taking in this thread to provide.....crispness of perfection. It does make me angry though because it makes everything that I am doing look like such garbage. I was doing this same assembly last weekend in the darkness of my little shed (using one of those hats with the headlights). Wish I saw this thread last week.

Offline SohRon

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #40 on: June 24, 2011, 09:09:16 PM »
it makes everything that I am doing look like such garbage

Well, Frankenstuff, I consider that high praise from someone who does some pretty dang good work himself; I've been following the Frankenbike thread for ages and could never approach your fab skills. Thanks for the encouragement!
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline CBJoe

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #41 on: June 25, 2011, 07:44:59 AM »
Fantastic thread.... very inspiring.
'07 Bonneville Black
'15 Moto Guzzi California 1400
CB750K2 Hot Rod Revival http://forums.sohc4.net/index.php/topic,171693.0.html
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Offline SohRon

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #42 on: June 26, 2011, 01:23:31 AM »
Thanks, Joe. Glad it helps. I'll be posting more in a couple of weeks, so stay tuned!
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline Stev-o

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #43 on: July 06, 2011, 08:45:13 PM »
Another great installment Ron!

I recently bought an aerosol can of the Por 15 after reading your recommendation on it. Is that how you applied it to your center stand?
I plan to use it on my K7's side stand.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline catsoup

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #44 on: July 07, 2011, 07:18:24 AM »
Been looking at these build threads for a while, and this is definitely an inspiring one. All beautiful - so shiny!

maybe it will convince me to look forward to the winter in upstate ny when i can take apart my bike...
78 cb750f

Offline Lostboy Steve

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #45 on: July 07, 2011, 08:14:58 AM »
WOW! Those are awesome pics. Great Build!
1968 Honda Z50
1977 Honda CB550K
2018 Indian Scout

Offline SohRon

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Re: Assembling my '74 CB550 - Front Fender and Wheel; Bars; Centerstand
« Reply #46 on: July 07, 2011, 06:25:51 PM »
Well, thanks, guys! Always glad to hear that I've been helpful!

Is that how you applied it to your center stand?

Stev-o, I POR-15'd that stand a couple of years ago and was going to use different top coat when they introduced BlackCote (now POR-15 TOPCOAT "Gloss Black") in cans, and I've never looked back. Nowadays I don't bother with the base coat; just sandblast and hit with a couple of coats of TOPCOAT and I'm happy. In fact, everything on the bike except the frame and swingarm has been finished with either TOPCOAT "Gloss Black" or "Chassis Black" .

Thanks to all who are folloing the thread; I'll be adding the next installment soon, so get your popcorn ready...
« Last Edit: December 26, 2014, 08:16:02 AM by SohRon »
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline SohRon

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Re: Assembling my '74 CB550 - Swingarm and Shocks
« Reply #47 on: July 25, 2011, 01:43:39 AM »
This session will cover installing the swingarm. I had it coated at Precision Powder Coating just outside of town, same folks who did the frame. Here it is with its privates splayed out for all to see; pivot bolt & nut, collar with end caps and phenolic bearings, swingarm bushings with felt seals



First order of business is installing the swingarm bushings, These need to be recessed a specific distance into the pivot tube, so I made some careful measurements of the old bushing installations before I removed them. I got pretty consistent readings of right around .235" - .240" on both sides, so I determined to set the new bushes in at .240" (a reading consistent with recommendations on this site, BTW). Normally, I'd just use the old bushings to help install the new set, like I did before on the headset, but as I was down at the shop taking measurements of the bushing depth one of the machinists asked me what I was doing. I explained how the bushings had to be recessed, etc, etc, and I guess it was a slow day because he took a couple of measurements, then went away and came back in a few minutes with this nifty little tool (thanks, Doug!). It fits perfectly inside the bushing and installs it to a depth of .240" with just a few hammer taps. Cool!  Almost makes me wish I had a few more swingarms to work on...



The reason the bushings are recessed is to accommodate this little stack-up of parts. At top we have the assembly as it fits into the swingarm pivot tube. From right to left we have the pivot nut and bolt, end cap (dust seal), and - it's kind of difficult to see this because, well, it's all together - the phenolic bearing, felt seal, inner bushing and, finally, the collar. I've kind of laid the parts out below.  The swingarm butts up against the phenolic bearing and everything else fits into the pivot tube



I greased the collar down well both inside and out, then slid it into the pivot tube. It has two grease channel holes, one on either end, and I tried to keep these oriented to the top of the collar as I inserted it through the bushings and into the pivot tube



the collar's a smidge longer than the swingarm as it is meant to butt up against the end caps



Next, I installed the felt seal. It becomes impregnated (no dinner, no show, no calls afterwards) with grease and acts both as a dust shield and water seal and helps to keep the collar, bushings and pivot tube nice and rust-free. It has a profile like a thick rubber band, and inserts around the collar. It actually fits farther down into the tube than is shown here, but that will be taken care of by the end cap/phenolic bearing...



...the phenolic bearing is essentially a large washer with a raised "lip" encircling the perimeter of the center opening. The bearing slides onto the collar and down over the pivot tube kind of like a cap, with the "lip" protruding into the tube, trapping the felt seal between the swingarm bushing and the bearing (note that these parts have been left ungreased for demonstration purposes; in actual application these should be gooey with grease...)


The end cap then fits over all of this, the phenolic bearing seating in a "dish" formed into the cap



With the end caps installed, I fitted the swingarm into position between the mounting lugs on the frame. The collar and end caps are locked into position by the pivot bolt, which kind of squeezes the frame tubes together to clamp them in place (it's a tight fit to begin with).  In operation, the collar, bolt and caps remain stationary while the swingarm pivots around the collar and rotates on the phenolic bearings.



Before installing the pivot bolt, I pre-charged it with grease on both sides, as the two grease channels are separate (inset), then smeared grease over the entire bolt and inserted it from the left side (orienting the grease channel holes towards the top)...



...locking it into place with the lock nut. This nut is still available, and replacing the old, fatigued nut on most of our bikes is certainly recommended. EDIT: Honda recommends this nut be torqued to somewhere between 40 - 60 ft lbs. Bwaller has an excellent procedural recommendation that I'd like to quote here:

Just a little quip I'll throw out there that I learned back in the day. Instead of torquing the swingarm bolt to Honda specs, just continue to tighten the nut until the arm just falls slowly through it's complete travel under it's own weight. I have found on reinstallation with new parts as you have that torquing to spec can be either too loose or too tight. It's a great place to start, but this other method "fine tunes" for each individual bike.

Thanks for the great tip, Bwaller!



Something to notice on the above pic is the grease zerk. This is some kind of Asian version that just doesn't quite fit our grease guns, and folks have a lot of fun bad-mouthing it and replacing it with a more familiar (modern) fitting. The trick with these, however, is that you have to use the right kind of nozzle on the grease gun; the hose type just  won't work. What's needed, and what I use, is a rigid pipe nozzle that can be pressed tight against the zerk. This is really a painless operation with the right tool (ain't it always the truth) and, unless you really, really want to, there's just no real reason to replace the fittings, IMHO.



With all of that said, I proceeded to grease the swingarm until grease started coming out around the end cap and from between the cap and the mount on the frame. A little clean-up, and I did the same on the other side. Later models have a different set-up where the swingarm is serviced via a grease zerk located in the middle of the pivot tube

So, here's the swingarm on the bike



To finish up, I'll install the shocks. It's a pretty straight-forward operation consisting of a couple of bolts, washers and acorn nuts. These are the shocks; they're a couple of inches shorter than stock, but still retain the stock appearance



This strange little Diplodocus head actually depicts the swingarm shock mount bushings; I removed them from the swingarm prior to powder coating, then replaced them with new afterwards. These are seriously difficult to remove and re-install. There are several threads on the site that address removing them utilizing various nuts, bolts, 13mm sockets and what-not; I used the 60lb press at work, and when they gave way it sounded like a gunshot



The top "eye" on the shocks slides onto the shock mount stud extending from each side of the frame and is secured with an acorn nut and washer. The bottom clevis fits over the swingarm mount, and a bolt and washer hold it in place.



And with the installation of the shocks, the swingarm assembly is complete.

Well, that's as far as it goes this session. Next I'll cover installing the rear wheel, chain and chain guard, and get this baby up on her own two.. er... feet, as it were.

'til next time
« Last Edit: December 26, 2014, 08:18:26 AM by SohRon »
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html

Offline bwaller

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Re: Assembling my '74 CB550 - Swingarm and Shocks
« Reply #48 on: July 25, 2011, 03:56:24 AM »
Nice job and well documented.

Just a little quip I'll throw out there that I learned back in the day. Instead of torquing the swingarm bolt to Honda specs, just continue to tighten the nut until the arm just falls slowly through it's complete travel under it's own weight. I have found on reinstallation with new parts as you have that torquing to spec can be either too loose or too tight. It's a great place to start, but this other method "fine tunes" for each individual bike.

Offline SohRon

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Re: Assembling my '74 CB550 - Swingarm and Shocks
« Reply #49 on: July 25, 2011, 05:30:48 AM »
Good tip, and something that can be done anywhere without special tools. I like it.
"He slipped back down the alley with some roly-poly little bat-faced girl..."

Assembling my '74 CB550: http://forums.sohc4.net/index.php?topic=86697.0
Assembly of the Right-hand Switch (a rebuilder's guide):  http://forums.sohc4.net/index.php?topic=80532.0
Installing stock 4X4 exhaust: CB500-CB550 K: http://forums.sohc4.net/index.php?topic=82323.0
CB550 Assembly Manual: http://forums.sohc4.net/index.php/topic,151576.0.html