Author Topic: 74 CB550 Modern Cafe - Isn't this thing done yet? (Read 94802 times)

SOHC4 Cafe Racer Fan · « **Reply #175 on:** April 02, 2015, 07:59:54 AM »

Awesome Cal. Looking forward to pics of the seat and rear set mounts.

calj737 · « **Reply #176 on:** April 02, 2015, 08:13:26 AM »

A 3d printed mock-up of the new bracket. I will cut the existing tab off and leave a section for the new bracket to slip over (the interior slot) then bolt the bracket thru the tab for strength. Since the new bracket is Aluminum, I need the existing steel tab for welded strength. Make sense?

I can't mill the new bracket until I finish the swing arm so I can verify relief on the backside.

I'll get a picture tomorrow of the bike with the seat repair. Gotta run a heap of errands and working on my 16yo's suzuki

Carbs are in need of serious attention.

Edit: this time with a picture Doh!

SOHC4 Cafe Racer Fan · « **Reply #177 on:** April 02, 2015, 12:13:09 PM »

Quote from: calj737 on April 02, 2015, 08:13:26 AM

A 3d printed mock-up of the new bracket. I will cut the existing tab off and leave a section for the new bracket to slip over (the interior slot) then bolt the bracket thru the tab for strength. Since the new bracket is Aluminum, I need the existing steel tab for welded strength. Make sense?

I can't mill the new bracket until I finish the swing arm so I can verify relief on the backside.

I'll get a picture tomorrow of the bike with the seat repair. Gotta run a heap of errands and working on my 16yo's suzuki Carbs are in need of serious attention.

Edit: this time with a picture Doh!

3d Printing!! Wow, Cal, that is slick. It must be great for mocking up before milling metal. Cool slip over idea.

Blackfin5 · « **Reply #178 on:** April 03, 2015, 12:33:28 PM »

Cal, I'm not one to hand out advice.......but...don't you think it's time to stop mooching off your buddies and buy your own CNC mill? We all know your loaded and I sure need to get some parts made.

calj737 · « **Reply #179 on:** April 03, 2015, 01:06:48 PM »

If not for me, then they'd have no friends, Kev. Mooching? I think of it as inspiring their capabilities. I always challenge them with the maxim: Don't tell me I am a more creative designer than you are an engineer?

That gets the machine cutting pretty damn quick!

Blackfin5 · « **Reply #180 on:** April 03, 2015, 01:48:23 PM »

Just slide me in under that deal.

calj737 · « **Reply #181 on:** April 03, 2015, 01:59:13 PM »

Absolutely! Just tell me what you need?

SOHC4 Cafe Racer Fan · « **Reply #182 on:** April 03, 2015, 02:31:49 PM »

Rearset mounts for a 1975 CB550K1!

calj737 · « **Reply #183 on:** April 03, 2015, 02:37:29 PM »

Draw it up, I'll mold it up and ship it to you. If you like the mock up, I'll mill them up. No sweat-

calj737 · « **Reply #184 on:** April 11, 2015, 09:34:40 AM »

So a couple of status pictures after seat repair... Got to get the seat upholstery done now.

And I just ordered 2 new MotoGadget m-switches to replace the existing multi switch in the left side (broken from last year's spill). So I get to re-wire some of that again..

Tews19 · « **Reply #185 on:** April 12, 2015, 05:14:22 PM »

It's been a while but is this the mono shock build Cal?

calj737 · « **Reply #186 on:** April 12, 2015, 06:02:26 PM »

No, we are sticking with duals for this build. Too much configuration to implement it with the hoop and swing arm we have in store.

Trad · « **Reply #187 on:** April 12, 2015, 06:11:01 PM »

Such a solid build. What type of upholstery are you opting for?

calj737 · « **Reply #188 on:** April 12, 2015, 06:14:20 PM »

Suede again. It will be the same brown, different shape with no side panels. Still pleated though

Tews19 · « **Reply #189 on:** April 13, 2015, 08:11:56 AM »

Cal, what's the bike in the background?

calj737 · « **Reply #190 on:** April 13, 2015, 09:03:36 AM »

The tail section showing is my boys GS500. The covered bike behind the 550 is a BMW R1150RT

Blackfin5 · « **Reply #191 on:** April 13, 2015, 08:38:47 PM »

Cal, may have missed it, but are those 13" Progressive shocks?

SOHC4 Cafe Racer Fan · « **Reply #192 on:** April 13, 2015, 09:14:25 PM »

Thought so by the look of the caps.

calj737 · « **Reply #193 on:** April 14, 2015, 04:43:04 AM »

They ar progressives, but they're 14". They're crap, by the way. One day, I'll swap them for a pair of YSS or Fox shocks from Devin.

Blackfin5 · « **Reply #194 on:** April 14, 2015, 01:10:41 PM »

Ugg. Not what I wanted to hear. Crap because not re-buildable or crap because way too soft or something else? I just put a pair on the 750 Blaster. They seem OK so far.

calj737 · « **Reply #195 on:** April 14, 2015, 01:56:31 PM »

I think they have horrible damping and little rebound. I first used HD springs then dropped to their regulars. Not much different. There's little adjustability too. Thought they'd be okay for a kids bike, but they've (boys) have noticed the difference compared to YSS unit on their Suzuki. So I'll need to replace them.

Maybe my boys are too soft in the butt?

SOHC4 Cafe Racer Fan · « **Reply #196 on:** April 14, 2015, 08:22:33 PM »

I once had a pair of Progressives. Pretty lackluster shocks -- although they now make piggyback reservoir models that are supposed to be halfway good -- but no fitment for Honda clevis yet.

marsvar · « **Reply #197 on:** April 14, 2015, 11:46:00 PM »

Quote from: calj737 on August 15, 2014, 04:27:36 AM

To anyone that cares, or might be contemplating MotoGadget stuff, or electronic gauges in general: the M-Unit is unbelievably worth the money. Their gauge is down right pricey, but, this unit is an analog Tach with a small LCD screen that provides:
Electronic speed (magnetic sensor installed under clutch cover, reading magnet applied to sprocket bolt, thanks Devin for the great idea)

I'd love to hear more about how you installed this. I've recently bought the Motoscope Pro, and have been trying to think of the best way to mount the sensor.

calj737 · « **Reply #198 on:** April 15, 2015, 03:50:01 AM »

Marsvar - I installed a magnet on the front sprocket bolt by adhering it with some epoxy and drilled a small recess in the head of the sprocket bolt. Then, on the underside of the sprocket cover, I welded a small tab of metal parallel to the cover, but hung it off the sprocket shroud. It looks like a small metal ear that gave me enough area to locate the sensor exactly opposite the bolt.

Then I drilled a small hole in the tab, installed the sensor and double-nutted it to secure it. Now, as the sprocket rotates, it passes the sensor.

http://www.cmsnl.com/honda-cb550k0-four-1975-usa_model465/partslist/E++04.html#results

Basically, if you look at part number 2 in the diagram, I added a small piece on the inside of the right hand side, to the left of the large hole the shift shaft passes thru. If it weren't pouring rain, and I didn't have so much to do today, I'd snap a picture.

The wiring runs along the underside of the cover, loops back around to the motor, then joins up with the Neutral and Oil pressure wiring, and up to the gauge. This allows a perfect register for the speed sensor, and you can adjust the WHEELSIZE parameter on your MG to fine tune your speed setting. I clocked my bike against my car's cruise control at 30. 40, 50 and 60MPH. I found that 5mm of parameter adjustment worked out to about 1 MPH correction.

The only think you need to be wary of is the distance offset from the sprocket. The sensor needs to be within a certain proximity, so you must locate the sensor in two planes: laterally to register, and distance from the sensor so as not to contact the sprocket, took a bit of fiddling to get it perfect. I think on my 500 build, I will install the sensor before I put the motor in the frame this time, or at least locate the darn thing. It would be much easier to do with no frame in the way.

marsvar · « **Reply #199 on:** April 15, 2015, 01:27:01 PM »

Thanks! I have a CB 750, it looks like the parts differ a bit from the 550. I'll see if it possible to apply the same method to mine.

http://www.hondapartshouse.com/oemparts/a/hon/506b8cabf870023420a1e91e/starting-motor-crankcase-rear-cover

I think there might be room on the inside of part #1. I have my engine out at the moment, so I have a good opportunity to find a good spot without fiddling too much with it.

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Author Topic: 74 CB550 Modern Cafe - Isn't this thing done yet? (Read 94802 times)