Author Topic: CB750 Dual disc front end swap (with GSXR1000/600/750 parts) (Read 140430 times)

Industrial Cafe · « **Reply #75 on:** February 07, 2010, 05:37:46 PM »

Nice find Midnight!!

The length from the center of the axle to the top of the upper tree is roughly 28.5 inches. +/- a half inch from the stock CB750 forks.

Retro Rocket · « **Reply #76 on:** February 07, 2010, 05:47:38 PM »

I had the damper rod and sliders lengthened 50mm so i had some adjustment with length on my GSXR 1100forks, mine aren't upside down ones..

Mick

J.Webster Designs · « **Reply #77 on:** February 07, 2010, 05:58:46 PM »

Quote

The length from the center of the axle to the top of the upper tree is roughly 28.5 inches. +/- a half inch from the stock CB750 forks.

The 1000RR forks are about an inch shorter than that for anyone looking into buying a set of inverted forks for this swap.

Industrial Cafe · « **Reply #78 on:** February 07, 2010, 06:12:13 PM »

Quote from: midnight08 on February 07, 2010, 05:58:46 PM

Quote
The length from the center of the axle to the top of the upper tree is roughly 28.5 inches. +/- a half inch from the stock CB750 forks.

The 1000RR forks are about an inch shorter than that for anyone looking into buying a set of inverted forks for this swap.

I was worried a bit because if you look at your stock upper tree, it has about a 1'' drop to it.
I guess that means my bike is lowered some.

Quote from: retro rocket on February 07, 2010, 05:47:38 PM

I had the damper rod and sliders lengthened 50mm so i had some adjustment with length on my GSXR 1100forks, mine aren't upside down ones..

Mick

you got a better picture of the front of your bike Mick?

Retro Rocket · « **Reply #79 on:** February 07, 2010, 08:47:21 PM »

I'll have a look Brian,if i can't find some i will take some new pics, its easy to see the extensions as i haven't had them hard chromed yet. There's not been much progress on mine of late, apart from being busy i only have a small space to work and i am still sourcing parts from overseas, which involves watching exchange rates closely..
Looking good mate..
This is the pic you have seen but you can clearly see the extended bit at the top. I will take some more detailed pics soon.

Mick

J.Webster Designs · « **Reply #80 on:** February 08, 2010, 06:14:05 AM »

Quote

Quote
The length from the center of the axle to the top of the upper tree is roughly 28.5 inches. +/- a half inch from the stock CB750 forks.

Quote
The 1000RR forks are about an inch shorter than that for anyone looking into buying a set of inverted forks for this swap.

Quote
I was worried a bit because if you look at your stock upper tree, it has about a 1'' drop to it.
I guess that means my bike is lowered some.

I am not too sure what mine will end up riding at, but the 929rr and 954rr have about the same amount of drop in them as the stock upper triple. but I measured out my stock fork lengths and they are the exact same as the 1000rr from middle of the axle to the top of the triple. (this is because i have my front end lowered about 1-1.5 inches.) so i guess we will see how low the front end really is after i get the 1000rr on there.

Are you using the stock GSXR clip-ons and controls?

EDIT: it looks like you have the stock CB throttle/right hand controls on there. are you going to have enough room for the GSXR master cylinder?

Industrial Cafe · « **Reply #81 on:** February 08, 2010, 07:46:24 AM »

Quote from: midnight08 on February 08, 2010, 06:14:05 AM

it looks like you have the stock CB throttle/right hand controls on there. are you going to have enough room for the GSXR master cylinder?

there's not much room on the clipons. So I'm going to put the old GSXR stem in a lathe and make 2.5'' extensions to fit into the end of the bars.
They're really narrow, around 24 inches.
I want them to be more like 29'' wide like my old bars were.

J.Webster Designs · « **Reply #82 on:** February 08, 2010, 10:20:34 AM »

right on

Retro Rocket · « **Reply #83 on:** February 08, 2010, 02:45:23 PM »

I just had some handlebar clamps made up, they just bolt on..

Mick

Industrial Cafe · « **Reply #84 on:** February 08, 2010, 03:24:42 PM »

Quote from: retro rocket on February 08, 2010, 02:45:23 PM

I just had some handlebar clamps made up, they just bolt on..

Mick

thought about that but, I don't want anything on the bike to be taller than the upper tree.

Retro Rocket · « **Reply #85 on:** February 08, 2010, 03:41:11 PM »

Hi Brian, i remember in the 80's some of the local superbike guys were using clipons that were bent up so they didn't sit as low down as the "normal" clipons, they were also wider so it made it a bit easier to man handle big 1100 Suzuki's and Honda's and such around the track, they sat like lowered super bike bars..

Mick

Industrial Cafe · « **Reply #86 on:** February 08, 2010, 04:44:26 PM »

I had superbike bars when I got my bike and they were too straight for me.
The clipons are sitting higher than my clubmans did. and they don't drop down so sharply either.

I broke my wrists into a million pieces when I was a kid and they were killing me with the old bars.

Retro Rocket · « **Reply #87 on:** February 08, 2010, 08:21:02 PM »

Quote

I broke my wrists into a million pieces when I was a kid and they were killing me with the old bars.

I did the same thing with my left wrist when i was 17, it has a god awful bend where the wrist meets the hand, so now i only use super bike bars on mine, less pain at the end of a long ride.

Mick

greasy j · « **Reply #88 on:** February 09, 2010, 11:44:48 AM »

right now I have upside down super bars on my 750. kinda like mellow clubman's. will be somethin diff, though when I redo the front end.

Frankenkit · « **Reply #89 on:** February 09, 2010, 01:15:25 PM »

GreasyJ, look up the Norman Hyde M bars. They're a lot like your upside down super bars but with more pullback, I think, and less drop. I have them on my 350 and they look like this.

ignore the crappy camphone quality and dirty garage though.

Sorry, IC, diversion ended.

greasy j · « **Reply #90 on:** February 10, 2010, 05:30:07 PM »

those are cool! they look really wide/long though. I do a lot of lanesplitting so that's always a consideration for me. it's why I don't use bar ends.

Norman Hyde has great stuff.

I wanna get a 350-4 next, for my girlfriend. she has her heart set on one. I kinda like the 350 twins, I use to have one of both. and the 400-4 is my fave in that size range. but Bre digs the 350-4, so were gonna be lookin for one.

Industrial Cafe · « **Reply #91 on:** February 19, 2010, 12:49:50 PM »

ALRIGHT!!!
the Wheel bearings and silicone hose came in today and I put it to work.
headlight brackets mounted, I still have to remove them and polish 'em.
If you want to do this just remember, you have to bend the brackets more than 90 degrees to get them to cooperate.

Industrial Cafe · « **Reply #92 on:** February 19, 2010, 12:55:37 PM »

Mocking up the gauge position-

They're a little higher than I wanted, but I think it'll look good.
I'll angle them to match the angle of the upper tree.

OldSchool_IsCool · « **Reply #93 on:** February 19, 2010, 02:13:30 PM »

Looking AWESOME IC!

ev0lve · « **Reply #94 on:** February 19, 2010, 05:03:32 PM »

Quote from: Industrial Cafe on February 19, 2010, 12:55:37 PM

They're a little higher than I wanted, but I think it'll look good.
I'll angle them to match the angle of the upper tree.

I like that a lot! What happens if you slide them back toward the triple? Will that flatten that profile out or is there no room?

Industrial Cafe · « **Reply #95 on:** February 19, 2010, 05:11:20 PM »

There's room and if I can I will, but I have to accommodate for the clutch cable....
speaking of, I wonder what I'll do for my tach and speedo cables? they're about 6-8 inches too long now.

edit: I went outside to check and apparently I can route them under the lower tree.

Slim Willy · « **Reply #96 on:** March 05, 2010, 01:59:53 PM »

This Is awesome, I just bought a hayabusa front end with the intention of doing this conversion on my CB750. I had no Idea how I was going to get it done but It is going to happen. Your build has given me renewed hope and enthusiasm for the project. Thanks

Industrial Cafe · « **Reply #97 on:** March 05, 2010, 04:51:59 PM »

you're welcome

update:
I hope to have the front wheel soon...
stupid zero budget

Zaipai · « **Reply #98 on:** March 05, 2010, 06:21:00 PM »

Quote from: Industrial Cafe on March 05, 2010, 04:51:59 PM

you're welcome

update:
I hope to have the front wheel soon...
stupid zero budget

Good to know, Tony called me and the wheels are customers having them balanced and or replaced..

.: Scott :.

Industrial Cafe · « **Reply #99 on:** March 05, 2010, 06:49:34 PM »

I'm confused

PM me.

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Author Topic: CB750 Dual disc front end swap (with GSXR1000/600/750 parts) (Read 140430 times)

Slim Willy