Author Topic: Rake on 82' CB750  (Read 2175 times)

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Offline Jinkce

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Rake on 82' CB750
« on: January 10, 2017, 03:06:10 PM »
Hey guys, I'm starting out a build project and am looking into stretching the rake on my 82' 750. An additional 8-10 degrees if possible. I want to run a 21" wheel up front.

VBled1's build was a huge inspiration and kinda stuck this idea in my head (http://forums.sohc4.net/index.php/topic,101886.0.html).

Before it gets asked, this will strictly be a local/show bike, I have two others that I do the majority of my riding on. Furthest this would see from my driveway is >40 miles.

Short and sweet:
Are there any raked tree kits you know of that would fit my neck?
Would it be do-able to just trim out a V cut (leave bottom section attached) behind the neck and pull the neck back, reweld with an adjusted rake?
Any options without sending it to a shop where I'm pretty sure they'd have to add a gooseneck to get the pitch.

I don't plan on riding this bike aggressively, but obviously, frame failure isn't something I want to gamble with. Any advice is really appreciated!
1982 CB750 DOHC - First Build
2008 Suzuki RMZ450 - SuperMoto
2011 Kawasaki ZX10R

Offline Medyo Bastos

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Re: Rake on 82' CB750
« Reply #1 on: January 10, 2017, 04:02:03 PM »
build it the way YOU want, and learn to ride it afterwords. you will get use to it, and will be glad you followed through with your plan  ;D you can pie cut up on top, and pull the stem back, and weld, or you can pie cut up from the bottom, add a wedge on both sides, and weld. i run 45ยบ rake plus

Offline Jinkce

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Re: Rake on 82' CB750
« Reply #2 on: January 10, 2017, 04:08:49 PM »
Haha, definitely man. I love the look of the rake VBled1 did and just fell in love over night. I had set out on doing a sort of hardtail-cafe build (basically stock tank with clubmans) but the stretched look just won me over.

If I build up a jig to keep the head in line while I stretch back (or forward), should I box in the entire neck afterwards to get more strength? Or do you think if I tac'd the placement and had a metalfab shop put down some solid tig lines it would be fine? I'm still pretty novice on a MIG so I'm not sure if I should be doing structural welds yet.
1982 CB750 DOHC - First Build
2008 Suzuki RMZ450 - SuperMoto
2011 Kawasaki ZX10R

Offline Medyo Bastos

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Re: Rake on 82' CB750
« Reply #3 on: January 10, 2017, 04:17:34 PM »

Offline Jinkce

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Re: Rake on 82' CB750
« Reply #4 on: January 10, 2017, 04:22:50 PM »
Only issue I'm concerned about is my front rails attach almost on top of my neck: 



I would probably have to cut them off, adjust rake then reattach?
1982 CB750 DOHC - First Build
2008 Suzuki RMZ450 - SuperMoto
2011 Kawasaki ZX10R

Offline Jinkce

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Re: Rake on 82' CB750
« Reply #5 on: January 10, 2017, 04:24:07 PM »
**Sorry ignore that last question, I looked closer at what Turbod did, makes sense now.
1982 CB750 DOHC - First Build
2008 Suzuki RMZ450 - SuperMoto
2011 Kawasaki ZX10R

Offline MikeSimon

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Re: Rake on 82' CB750
« Reply #6 on: January 11, 2017, 05:40:44 AM »
Without touching the frame, you can have a custom triple tree made with a different offset on the bottom bridge than on the upper one.
1973 CB350F -sold
1974 CB350F -218 orig miles, sold
1976 CB750K - in restoration

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