Author Topic: CB 750 Project 1 - Rides Well but a few tweaks needed  (Read 114155 times)

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Offline Terry in Australia

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #200 on: February 21, 2015, 11:13:30 PM »
Looking good Timbo, shame about that "2 Pack in a can", I was going to buy some, but not now. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline martin99

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #201 on: February 22, 2015, 12:22:32 AM »
I've had bad experiences with rattle can lacquer too, unless it's for a fuel tank I wouldn't bother with it. Even then, some of these so-called fuel resistant clears don't seem to hold up well at all, probably better to just be careful when you fill up IMO.

Timbo, is there any chance you could post a better picture of your rear fender/tail light set-up? I'm looking to do a similar thing with mine and I've been looking at that light too.

Great stuff so far mate, once you get all the spangly chrome bits fitted and stand back to look at it you'll be glad you paid attention to the detail :)
Build threads:
77 750F2 Refresh Project http://forums.sohc4.net/index.php?topic=144075.0
TRIBSA http://forums.sohc4.net/index.php/topic,160296.0.html

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1958 Norton Model 99
2011 Triumph Street Triple 675

Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #202 on: February 22, 2015, 01:01:27 PM »
Martin. Hoping to have the rear guard fitted next weekend so will take photos for you then.

Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #203 on: February 22, 2015, 01:04:50 PM »
Terry. I can say that I definitely shook the can enough. 5min one way and 5min upside down, my srm was killing me. I am still not completely happy with the paint on the guards but I am sick of repainting them.

Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #204 on: February 22, 2015, 01:06:58 PM »
I managed to fit up the solid brake line on the right side but I am thinking I should of routed it a different way.

Offline mystic_1

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #205 on: February 22, 2015, 04:16:12 PM »
I dunno, that looks pretty good to me.

What don't you like about this routing?

mystic_1
"A ship in harbor is safe, but that is not what ships are built for."
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My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #206 on: February 22, 2015, 04:52:23 PM »
It has almost no clearance from both the forks and the guard bracket.  Any vibration will either rattle or rub or both.

Offline oldhatt45

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #207 on: February 22, 2015, 05:26:58 PM »
timbo750,

It looks like the hard line should be in front of the Caliper adjuster nut?
It doesn't look like the way the left side hard line is routed.  Also looks a little bit like where it passes between the fender bracket and the fork leg it's a little too high up.  Not sure, but I just today reinstalled my left side brake lines and master cylinder.  And the routing should (maybe) be a mirror image of the left side.

If you look at almost the last post (page 5) of my build thread, you'll see how I routed my left side hard line.
Hope this helps.

Charlie

Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #208 on: February 22, 2015, 05:56:06 PM »
Charlie
The biggest issue is that the caliper mounts and the guard bracket are different on each side. I know what you are saying with the left side and at first what I did looked to be the opposite of the left, at least it did when I planned it but the reality is that it now doesn't look quite right.

Offline oldhatt45

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #209 on: February 22, 2015, 06:08:22 PM »
Timbo750,

OK.  I'm having trouble understanding the difference in the bracket and guard.  Could you put a picture up from the side to help me understand the difference????  I was under the impression that the bracket was the same, just flipped around to mount on the right side?????  I must be missing something.  (Trying to understand because I've been thinking about adding a right side caliper and rotor at some point.)

Just looked at this thread.  http://forums.sohc4.net/index.php?topic=145349.msg1653383#new  Look at reply Number 2.  Maybe Rooksters bike is a different K, but this is what I thought about when I replied.

Thanks,

Charlie
« Last Edit: February 22, 2015, 06:24:49 PM by oldhatt45 »

Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #210 on: February 22, 2015, 06:56:43 PM »
Charlie. 
The bracket for the calipers is the same but not flipped. The bracket I am talking about is the fender bracket which is normally fixed to the fender but mine was already separated when I got the bike.

The left side of the fender bracket mounts to the caliper bracket and the right side mounts directly to the fork lower which is why the brake line is not a true mirror from one side to the other.

Offline mystic_1

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #211 on: February 22, 2015, 07:15:35 PM »
Those look like the early series 750 forks to me, much more challenging to dual-disk than the later ones.

The thread that oldhatt45 posted looks like the later series forks to me.


Me, I would either wrap the hard line or coat it somehow (bedliner maybe) where it passes between the fork leg and the fender bracket.  That would keep it from rattling or damaging any finish.  The routing looks pretty good to me and I cant think of many alternatives that would work better.

You could of course always delete the hardlines and run banjo lines right down to the caliper.  But, you've probably already considered that.

mystic_1



Edit:  how about bending the fender bracket a little so you can shim it away from the fork leg a little?  Wouldn't need much.
« Last Edit: February 22, 2015, 07:19:51 PM by mystic_1 »
"A ship in harbor is safe, but that is not what ships are built for."
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My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline oldhatt45

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #212 on: February 22, 2015, 07:21:58 PM »
timbo750

Ahhhhh, OK now I understand!!!!  Thanks for that.

Seems like a definite problem.  Also as Mystic said yours is likely the earlier setup.
So, I guess the question is what is the difference between the earlier and later versions?????
Is the spacing between the forks the same????  Maybe there is a way to change the setup or am I missing something else??????

Thanks,

Charlie

Offline mystic_1

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #213 on: February 22, 2015, 07:26:54 PM »
The mount points on the fork lowers are totally different, the caliper mount brackets are totally different, and the caliper arms are different, and the fender bracket is different.

You'd basically have to swap everything from the fork uppers downwards in order to change from one system to the other.

mystic_1
"A ship in harbor is safe, but that is not what ships are built for."
- John Augustus Shedd

My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline mystic_1

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #214 on: February 22, 2015, 07:40:18 PM »
Early fork lower pictured first.  Later fork lower pictured second.
"A ship in harbor is safe, but that is not what ships are built for."
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My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline mystic_1

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #215 on: February 22, 2015, 07:41:33 PM »
Early brake setup:



Later brake setup:
"A ship in harbor is safe, but that is not what ships are built for."
- John Augustus Shedd

My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline mystic_1

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #216 on: February 22, 2015, 07:45:09 PM »
Here's a diagram of the early fender bracket, you can see the asymmetry which provides more clearance on the left side:

"A ship in harbor is safe, but that is not what ships are built for."
- John Augustus Shedd

My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

Offline oldhatt45

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #217 on: February 23, 2015, 05:13:07 AM »
Hey Mystic,

OK, you've almost sent me into information overload while sitting here having my morning coffee. :))

Think I'll have read again after coffee. 

I knew about the C bracket vs. the T bracket difference.  I was thinking that maybe the C bracket could be swapped out for the T bracket, but I guess not.
That's weird about the fender being asymmetrical.  I wonder what Honda did for their race bikes given that they provided the ability to use a dual disk setup up front to get by the rules???? 
Did they use the same fender and fender bracket or did they do something different? 
I can't imagine that Honda would paint themselves into a corner when they designed the fender bracket.

This is really GOOD info and definitely worth keeping.  Thanks Again!!!!!

Charlie

Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #218 on: February 25, 2015, 04:02:39 PM »
Have selected the color and test paint was done on a side cover. Tank repair has started and has been sealed. I am also going to get him to paint the fenders,  gloss black with blue stripe down the length.
« Last Edit: February 25, 2015, 08:43:57 PM by timbo750 »

Offline Bootsey

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #219 on: February 25, 2015, 04:56:21 PM »
Nice choice, looks killer!

Offline SOHC4 Cafe Racer Fan

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #220 on: February 25, 2015, 05:10:30 PM »
Have seldcted the color and test paint was done on a side cover. Tank repair has started and has been sealed. I am also going to get him to paint the fenders,  gloss black with blue stripe down the length.

Looks like Sapphire Blue Candy.
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Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #221 on: February 25, 2015, 08:43:43 PM »
Have selected the color and test paint was done on a side cover. Tank repair has started and has been sealed. I am also going to get him to paint the fenders,  gloss black with blue stripe down the length.

Looks like Sapphire Blue Candy.
Yes it does, I wanted Planet Blue Metallic but didn't have a sample to get scanned and I cant order paint form overseas to Aus. the guy had painted a another CB750 and the colour was matched from a sample, he showed me a photo and looked good.

Offline krusty

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #222 on: February 26, 2015, 12:20:22 PM »
Honda
1976 CB750F1
1978 CB750F2
1972 CB350F
1961 C100 Cub
1962 C100 Cub
1959 C76
1963 C92
1964 C95
Suzuki
1963 M15D 50cc
1961 250TA Colleda
1961 250TA Colleda x 2 primed ready for paint and assembly
Yamaha
1977 DT175E x 2
1978 DT125E
1979 DT125F
1976 DT250E
1978 DT250G
1984 FJ1100
1990 FJ1200

Offline timbo750

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #223 on: March 01, 2015, 01:50:50 PM »
Fitted the rear lights on the weekend to make sure there was no drilling after the guards were re-painted, I am happy with the look of the tail light except for the rubber that it sits on but I don't think there is much I can do about that. For anyone that is looking to buy one of these they do come with screws and nylocks but the crews are not quite long enough for the nylocks to be effective.

Offline oldhatt45

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Re: CB 750 Project 1 - Getting engine ready for assembly
« Reply #224 on: March 01, 2015, 02:36:43 PM »
timbo,

Looks good.  How does it look from the back???

Charlie