Author Topic: Lowering CB750 forks with spacers?  (Read 7311 times)

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Offline vorhese

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Lowering CB750 forks with spacers?
« on: March 13, 2010, 10:50:25 AM »
I was thinking I could use the ol spacer trick in the cb750 forks instead of cutting the tubes or buying new ones (since I'm cheap). I want 2 inches shorter. I was thinking I could put a 2" spacer on the damper rod between the damper rod spring. And then cut, oh, 1 1/2 inches off the fork springs. That spacer will suck the damper rod higher into the fork tube. I tried compressing the forks as much as I could and I seem to have enough travel to play with. I don't plan on doing an dirt jumps. Seems like it should work. I have an extra set of springs. Anybody done this?

Damper rods


Forks

Offline MaaseyRacer

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Re: Lowering CB750 forks with spacers?
« Reply #1 on: March 13, 2010, 07:58:23 PM »
I personally would just buy the -2 Cycle X fork tubes and some springs and emulators from race tech. It might be the expensive way to do it, and it will probably take some work to dial in, but it will get you two inches lower and help the handling at the same time. 
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Offline Triffecpa

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Re: Lowering CB750 forks with spacers?
« Reply #2 on: March 14, 2010, 09:54:20 AM »
I was thinking I could use the ol spacer trick in the cb750 forks instead of cutting the tubes or buying new ones (since I'm cheap). I want 2 inches shorter. I was thinking I could put a 2" spacer on the damper rod between the damper rod spring. And then cut, oh, 1 1/2 inches off the fork springs. That spacer will suck the damper rod higher into the fork tube. I tried compressing the forks as much as I could and I seem to have enough travel to play with. I don't plan on doing an dirt jumps. Seems like it should work. I have an extra set of springs. Anybody done this?

Damper rods


Forks


Yes, that is a possible modification.  Make sure that your spacer doesn't cover the rebound damping holes in the damper rod though.  You might have to put the spacer below the top out spring on the rod.  As you have guessed, you will lose 2" of travel on the front forks.  And cutting the springs shorter will effectively make them stiffer.  It's a quick and easy modification and it's virtually free.  If you don't like it, it's fairly easy to return them back to stock.  Your springs end up shorter, but you can put a solid spacer on top of the spring to make up the difference in length.

Tracy

Offline kmoll70

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Re: Lowering CB750 forks with spacers?
« Reply #3 on: March 14, 2010, 11:57:28 AM »
I used an extra dampening rod spring as the spacer on my set-up.

And I used a spring fork spring similar to the one on the left in your picture. (As you can see the fork spring on the left is shorter than the two on the right)

I have not yet had a chance to road test it but it went together well and seems to be functioning properly
74 cb750

Offline Jt550

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Re: Lowering CB750 forks with spacers?
« Reply #4 on: February 11, 2011, 06:26:11 PM »
Would this trick work on 500 forks??

35mm Honda CB-500 "500 Four" (71-73)
CB550 tube (the ones with the "groove" around the bottom)...~22 1/2" OAL
CB500 tube (the ones with the hole near the bottom)...~22 1/4" OAL

35mm Honda CB-750 "750 Four" (70, 72)
« Last Edit: February 11, 2011, 06:46:37 PM by Jt500 »
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Offline stueveone

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Re: Lowering CB750 forks with spacers?
« Reply #5 on: February 12, 2011, 08:15:19 AM »
I don't know why not? Same principles really.