Author Topic: Cognito Moto CB750 cafe with GSX-R forks  (Read 102464 times)

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Offline CognitoMoto

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Cognito Moto CB750 cafe with GSX-R forks
« on: November 21, 2013, 10:33:42 AM »
Hello all,

I'm Devin from Cognito Moto. I've been posting my builds DTT but frequent SOHC4 often to check out the builds so I figured I'd start sharing my builds.

I'm currently working on a CB750 for myself. I plan to make it a 2 up so my wife can come along for a ride here and there.

A few months back I picked up this CB750 frame and motor because it was a good deal.

I will need to rebuild the top half of motor. Has a leaking valve seal.


Found these forks on eBay for $220 shipped. I didn't have a build going on at the time but it was a steal so I bought them.


This is a gas tank I bought for my 550 build but didn't use it so ill use it on this one.



Little mock up


Found this 17 x 4.5" rim on eBay for $100. I like to run modern sport bike tires so this will fit a 160-17



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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #1 on: November 21, 2013, 10:37:06 AM »
Tab grinding...





Made these top triples for that retro look. They for the gsxr fork.
Put them on my CB550 gsxr fork




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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #2 on: November 21, 2013, 10:40:52 AM »
I designed and had these stems manufactured. They replace your stock gsxr stem and fit the CB750 frame.


Test fit

Added Cognito Moto top triple tree, Cognito Moto retro nut for GSXR and Tarozzi riser clip-ons.




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Offline CognitoMoto

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Cognito Moto CB750 cafe with GSX-R forks
« Reply #3 on: November 21, 2013, 10:43:14 AM »
Borrowed the wheels from my CB550 since I was waiting for more hubs to come in. Trying to layout the stance. These rims are 17's from a harley.

I used 14.3" shocks I had in stock for the rear.









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« Last Edit: November 21, 2013, 10:50:13 AM by CognitoMoto »
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #4 on: November 21, 2013, 10:46:01 AM »
Cognito Moto hubs are back in stock. These are 100% bolt on and allow you to put a laced wheel on a gsxr fork. Reuses all of the gsxr bearings and spacers.



Now I need to find another rim and get it laced up.


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Offline 754

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #5 on: November 21, 2013, 10:48:57 AM »
Welcome Aboard......
 Nice looking trees and hubs..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #6 on: November 21, 2013, 10:50:50 AM »

Welcome Aboard......
 Nice looking trees and hubs..
Thanks!


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Offline jpfrk2001

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #7 on: November 21, 2013, 12:04:27 PM »
Hey there! Welcome!! This is Martin.

Looking forward to your handy work.
I do tasks the most difficult way. My life is interesting.

1978 750K
1978 550K on a table
2009 Ducati Monster 1100
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Offline brandEn

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #8 on: November 21, 2013, 12:17:28 PM »
Those parts you make are friggin sweet. I would love to have one of those hubs and stems. Next year....

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #9 on: November 21, 2013, 12:52:46 PM »
Welcome aboard Devin! Plug and play! I love it. Exactly what is needed for those of us with less than stellar build talent. Chasing tails is not fun. Hoping that you'll also provide information on the Suzuki front ends that we should consider. Please continue with your build thread and provide details, I'll be watching  ;D

Next build will get this style treatment after the rolling bike gets put together. 1975 CB750F. BrandEn is gonna do another nanananana. Tweaking is lurking I know.   
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline brandEn

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #10 on: November 21, 2013, 12:57:13 PM »
I'm actually considering something like this for TAO ......
I would rather do that then another complete build. I will be lurking this thread for sure.

Also, welcome to the forum! I look forward to updates and more info on these.

Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #11 on: November 21, 2013, 01:45:15 PM »
I'm attaching a compatibility chart for the GSX-R hub. It works on most gsxr forks.

The top trees I have work on 2005-2010 GSXR600 and GSXR750's.

This is the other top tree I have.





The stem covers all GSXR's. I haven't come across a GSXR fork it doesn't work on.




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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #12 on: November 21, 2013, 01:53:49 PM »
This is the hub all laced up on a previous build



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Offline bjbuchanan

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #13 on: November 21, 2013, 06:06:54 PM »
The build looks great and I can really say I was ready for some serious sticker shock on your site but I was pleasantly surprised.

Your more basic triples are really fairly priced and the retro one looks awesome, especially for that price point. Give me a year to finish this degree and I will be shopping ha
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #14 on: November 21, 2013, 10:34:35 PM »

Hey there! Welcome!! This is Martin.

Looking forward to your handy work.

Hi Martin


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Offline ISLAND CAFERACERS

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #15 on: November 22, 2013, 12:16:14 AM »
Hi Devin

a great looking build I will follow it with interest

Hi All I would like to highly recommend Devin at Cognito Moto I recently bought the GSXR hub conversion & clip ons fantastic quality & super service delivering over to the UK

I am going back for more - rearsets etc soon keep up the great work

Andy in the UK

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #16 on: November 22, 2013, 05:39:33 AM »
Nice looking hubs......looks like it makes the conversion so much easier.
May have to make a purchase for one of my projects, in the near future. I will be putting a USD front end on a Benelli six cylinder cafe and this hub would be perfect.

Nice stuff!!

Offline CognitoMoto

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Cognito Moto CB750 cafe with GSX-R forks
« Reply #17 on: November 22, 2013, 06:28:56 AM »
Hi Devin

a great looking build I will follow it with interest

Hi All I would like to highly recommend Devin at Cognito Moto I recently bought the GSXR hub conversion & clip ons fantastic quality & super service delivering over to the UK

I am going back for more - rearsets etc soon keep up the great work

Andy in the UK


Andy,
Thanks for the kind words.

Digging your build. Looks like it's off to a good start.




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« Last Edit: November 22, 2013, 05:27:33 PM by CognitoMoto »
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #18 on: November 22, 2013, 06:40:21 AM »

Nice looking hubs......looks like it makes the conversion so much easier.
May have to make a purchase for one of my projects, in the near future. I will be putting a USD front end on a Benelli six cylinder cafe and this hub would be perfect.

Nice stuff!!

Glad to hear it. One of the hardest thing to do is create a quality product and maintain a reasonable price.

I'm currently dealing with this on a oil can swingarm I've been working on. I want it to be 100% bolt on, use existing oil feed lines, fit 3qts of oil, upgrade to bushing instead of rubber, and have the tubular arms to match the CB750 tube frame.

 

Hopefully I can complete this swingarm on this project.




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Offline jpfrk2001

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #20 on: November 22, 2013, 09:55:27 AM »
Since I am basically almost copying what you did with the 550, what size/type of rims and tires you use?

Are you going to use the same/similar for the 750?

since you are doing a rear 17" wheel, what size/type you are using for the front?
I do tasks the most difficult way. My life is interesting.

1978 750K
1978 550K on a table
2009 Ducati Monster 1100
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #21 on: November 22, 2013, 10:57:41 AM »
The front has a 17x2.75" harley rim with a 110/70/17 tire. If you can find a 17x3.5" tire you can use the more common 120/70/17 tire.

The rear is a 160/60/17 tire on a 17x4.5" harley rim. 

The cb550 has a wider swingarm so this works. The stamped sheetmetal swingarm on the 750 is a bit more narrow and you will need to run a 150 tire. I have not tested this so I maybe wrong.

You will need 10mm offset sprockets front and rear. You will need to figure out the brake anti pivot arm and brake pull lever.


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Offline jpfrk2001

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #22 on: November 22, 2013, 12:58:56 PM »
The front has a 17x2.75" harley rim with a 110/70/17 tire. If you can find a 17x3.5" tire you can use the more common 120/70/17 tire.

The rear is a 160/60/17 tire on a 17x4.5" harley rim. 

The cb550 has a wider swingarm so this works. The stamped sheetmetal swingarm on the 750 is a bit more narrow and you will need to run a 150 tire. I have not tested this so I maybe wrong.

You will need 10mm offset sprockets front and rear. You will need to figure out the brake anti pivot arm and brake pull lever.


www.CognitoMoto.com

Thanks Devin. Looks like my build is changing directions. Can't wait for yours to come to light here.
I do tasks the most difficult way. My life is interesting.

1978 750K
1978 550K on a table
2009 Ducati Monster 1100
77/78 cool 2 member

Offline Tews19

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #23 on: November 22, 2013, 07:34:19 PM »
Great work on all the custom parts. I followed your 550 thread on DTT... Is the price still the same for the hub? I forget, how do you decide on a rim with your hub? Will a stock Honda rim work? Or custom?
1969 Honda CB750... Basket case
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #24 on: November 22, 2013, 07:48:27 PM »

Great work on all the custom parts. I followed your 550 thread on DTT... Is the price still the same for the hub? I forget, how do you decide on a rim with your hub? Will a stock Honda rim work? Or custom?

Pricing is still the same. I have it listed on the site. The hub is 40 hole so that you can use stock rims as well. I have 36 holes as well but they are still in production.

http://cognitomoto.com/collections/gsxr-conversion-parts/products/gsx-r-hub-bolt-on-conversion-laced-wheel


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