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Author Topic: CB750 Brat bobber Imitation, CRD Inspired  (Read 34144 times)

Offline notlob

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    • CB750 Brat Bobber Build Thread
CB750 Brat bobber Imitation, CRD Inspired
« on: Nov 25, 2012, 17:10:11 »
Only posted on here a couple of time but been lurking and gathering info and inspiration for a year or so now.

So about time I posted my own build thread of what I have been upto for the past year.

I started out with this 1980 cb750FA


and hope to end up with something akin to these CRD Beauties




Hopefully CRD wont be offended by my blattent plaggerising and consider that imitation is the sincerest form of flattery.

« Last Edit: Dec 04, 2012, 11:20:47 by notlob »
“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline notlob

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    • CB750 Brat Bobber Build Thread
Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #1 on: Nov 25, 2012, 18:22:37 »
the plan is to detab and fabricate a seat hoop. A KZ or KA tank is needed as the F tank is too long, new mounting bracket will be required as well.
Swing arm will need a underneath torque arm mount and a drum brake comstar wheel for the rear.
I will try to fabricate parts as required or refurbish existing parts. the frame swingarm and wheels will be sent for powder coating and the smaller parts I will do myself with a hobby powder coater.
A local guy to me will be doing the tank painting.
all electrics to be relocated under the tank and wiring hidden in frame. I'll be making a custom loom to suit, with a small lithium battery.

I am well on the way with this project and should of started posting earlier. so I'll add a few pics every couple of days.
“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline VonYinzer

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Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #2 on: Nov 25, 2012, 19:38:54 »
Welcome to DTT. Looking forward to seeing what ya come up with.
Like a river that don't know where it's flowin'
I took a wrong turn and just kept goin'

Offline notlob

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    • CB750 Brat Bobber Build Thread
Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #3 on: Nov 26, 2012, 15:53:36 »
pics of frame mods, seat loop, seat pan brackets and tank mount.



[imghttp://farm8.staticflickr.com/7058/6904334181_30baba9f9e_z.jpg]http://[/img]



Wheels are done and shod with Coker Diamonds


Stance is there are thereabouts, maybe another 5mm up on the back. Forks have been lowered 45mm.


“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline beach bum

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Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #4 on: Nov 26, 2012, 16:51:36 »
Keep us posted.  Hope to go similar myself

Offline notlob

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    • CB750 Brat Bobber Build Thread
Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #5 on: Nov 27, 2012, 19:54:59 »
had to rejig the rear brake arm and brake light switch to suit the change to drum brake and to hide the switch.





Bracket to mount the regulator/rectifier behind the engine under the swingarm



made an aluminium holder for the digital speedo/tacho, had to use pop rivets as I cant weld ali.







Was going to use these shock risers from a scooter as CRD have used on a couple of their builds and even made an insert to hold then level and stop them rotating.




Decided they look to clunky and made these instead, hand made with hacksaw and file, oh and a drill.



“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline notlob

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    • CB750 Brat Bobber Build Thread
Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #6 on: Nov 27, 2012, 20:19:06 »
Got hold of a set of 93 gsxr carbs as I'm going to run with pod filters and the standard carbs I'm reliably informed are almost impossible to tune with pod filters.




Heres the frame and swingarm all powder coated Light Ivory Ral1015







Heres the motor masked up and painted satin black, but more flat black than satin black I really wanted.



I gave the top end a overall fitted new rings and lightly honed / deglazed the barrels. There was minimum wear in the bores and I only changed the rings as I got a set for £30. all valve clearances where shimmed  after lapping the valves and the camchains ware also in surprisingly good nick no stretch at all.



Heres the head light mounting bracket



A rolling chassis with the Hagon shocks fitted



“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline notlob

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Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #7 on: Nov 27, 2012, 20:44:17 »
Here she is with engine fitted and new motad 4 into 2 headers fitted





Rear number plate holder and back light fitted to rear fender



Headlight, powder coated top yolk and renthal bars


speedo / tacho



After market master cylinder and chrome bullet LED indicators



Headlight bracket and front brake pipe splitter



LED indicators mounted to headlight bucket



Front Brake calipers were upgraded to later 2 piston type and fully rebuilt and powder coated. Speedo sensor pickup mounted on original speedo drive, thats had the internals removed and blanked off, the magnet for the pick up is stuck to a disc bold head. The brake lines are stainless braided lines hidden inside a braid sleeve with the pick up wire.



“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline notlob

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    • CB750 Brat Bobber Build Thread
Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #8 on: Nov 28, 2012, 18:33:51 »
completely re-wired









“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline Flugtechnik

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Re: CB750 Brat bobber Imitaion, CRD Inspired
« Reply #9 on: Nov 28, 2012, 18:43:16 »
Nice, Nice Nice.  So nice I said it thrice.