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Author Topic: Cognito Moto CB750 cafe with GSX-R forks  (Read 102374 times)

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Offline Free Booter

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #25 on: November 22, 2013, 08:30:01 PM »
I finished my 750...You can see it in my link. I always considered doing this conversion, but opted for a more old school look. I DO happen to have a cb550 FOUR just sitting around though...heheheh...

Was considering doing this with my xs650 Yamaha, but I've always wanted a little bobber and they seem quite suited for that. I was going to rail on you for what I thought amounted to a big advertisement for your site, but DAMN! I love your parts! So you can put me on the list to order some bits to convert my 550 over...love the look.
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Offline CognitoMoto

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Cognito Moto CB750 cafe with GSX-R forks
« Reply #26 on: November 26, 2013, 10:33:37 AM »
Little update. Had this electronics pan made. Bolts in where the old battery use to go










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Offline CBcafeJunkie

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #27 on: November 30, 2013, 11:26:36 PM »
love your ingenuity man! ill be watching also love your swing arm build idea. subscribed
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Offline SOHC4 Cafe Racer Fan

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #28 on: November 30, 2013, 11:41:06 PM »
Quote from: CBcafeJunkie on November 30, 2013, 11:26:36 PM
love your ingenuity man! ill be watching also love your swing arm build idea. subscribed


Me, too, and I suspect many others.
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Offline USCG_C130

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #29 on: December 01, 2013, 09:11:26 AM »
keep up the good work, i love the GSXR front ends and i know many will thank you for selling a conversion kit. rock on i will be following!
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #30 on: December 01, 2013, 10:35:55 AM »
Can you explain the oil feed on the swingarm oil can? Will it be high enough for gravity to do it's thing or am I missing something?? Pressurized??
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #31 on: December 01, 2013, 10:50:16 AM »

Quote from: Jerry Rxman Griffin aka MuthaF'er on December 01, 2013, 10:35:55 AM
Can you explain the oil feed on the swingarm oil can? Will it be high enough for gravity to do it's thing or am I missing something?? Pressurized??

The oil is pumped in and out so gravity shouldn't play a factor. I've seen it done before but not much detail so I will build a prototype and see how it works.


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Offline CognitoMoto

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Cognito Moto CB750 cafe with GSX-R forks
« Reply #32 on: December 13, 2013, 03:52:49 PM »
This build has been on the back burner for a few weeks now but I've been gathering parts. I'm going to use the harley hub because it's already laced and disc in the rear looks cooler than it is functional. Disc was there so I figured why not. Picked up a rear caliper from a harley off eBay for $65 shipped. The axle hole is 3/4" (19mm) so I'll need to bore it out to 20mm. Little test fit



Looks promising.



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Offline brandEn

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #33 on: December 13, 2013, 04:43:19 PM »
That does look promising! Sweet....
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Offline redrider736

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #34 on: December 14, 2013, 10:46:46 AM »
Quote from: CognitoMoto on November 21, 2013, 10:37:06 AM


www.CognitoMoto.com
Hey Devin, are your Retro Top Clamps flat on the underside ?? Looking to mount a min-gauge bracket to the underside of them if possible ??? Is this possibly something you could make/add to your product line to fit your Clamp ??

ThX
Ryan
« Last Edit: December 14, 2013, 11:14:14 AM by redrider736 »
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #35 on: December 14, 2013, 10:51:02 AM »

Quote from: redrider736 on December 14, 2013, 10:46:46 AM
Quote from: CognitoMoto on November 21, 2013, 10:37:06 AM


www.CognitoMoto.com

Hey Devin, are your Retro Top Clamps flat on the underside ?? Looking to mount a min-gauge bracket to the underside of your Clamp if possible.

ThX
Ryan

Ryan,

Yes it's pretty much flat. It's contoured but large amount is flat.




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Offline redrider736

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #36 on: December 14, 2013, 11:42:19 AM »
WoW, that's pretty trick ! If want to run Clip-on's you can, and If I decide you want to go back to a 7/8ths bar you just flip over the clamp and buy the risers !! Cool
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Offline 754

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #37 on: December 14, 2013, 11:58:24 AM »
I am not seeing a slit in the clamping element in the last pic. Is there any clamping to the stem nut?
« Last Edit: December 16, 2013, 08:10:44 AM by 754 »
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #38 on: December 14, 2013, 02:18:06 PM »

Quote from: 754 on December 14, 2013, 11:58:24 AM
I am not seeing a islit in the clamping element in the last pic. Is there any clamping to the stem nut?

No clamp. Stock gsxr doesn't clamp.


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Offline jpfrk2001

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #39 on: December 16, 2013, 06:22:34 AM »
So your going to show us how to fit a rear Harley wheel assembly to a CB rear swing arm?

This is awesome to wait. I also have the exact rear Harley wheel assembly sitting in my living room. I was going to start de-lacing this weekend, but that updated post/pic, caused me to wait.

Definatly paying attention.
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #40 on: December 16, 2013, 06:35:18 AM »

Quote from: jpfrk2001 on December 16, 2013, 06:22:34 AM
So your going to show us how to fit a rear Harley wheel assembly to a CB rear swing arm?

This is awesome to wait. I also have the exact rear Harley wheel assembly sitting in my living room. I was going to start de-lacing this weekend, but that updated post/pic, caused me to wait.

Definatly paying attention.

So far I have bearing to convert the axle on the way. Then it's on to setting up the spacing and sprocket


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Offline jpfrk2001

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #41 on: December 16, 2013, 10:48:55 AM »
Quote from: CognitoMoto on December 16, 2013, 06:35:18 AM

Quote from: jpfrk2001 on December 16, 2013, 06:22:34 AM
So your going to show us how to fit a rear Harley wheel assembly to a CB rear swing arm?

This is awesome to wait. I also have the exact rear Harley wheel assembly sitting in my living room. I was going to start de-lacing this weekend, but that updated post/pic, caused me to wait.

Definatly paying attention.

So far I have bearing to convert the axle on the way. Then it's on to setting up the spacing and sprocket


www.CognitoMoto.com

Please post all details. I may be interested in this. May change the direction of my build. Expect a PM this week sometime.
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #42 on: December 17, 2013, 07:34:44 PM »
Replaced the stock harley bearings with the 20mm ID bearings. So far so good

Diameter difference.



Axle installed.





Now i will bore out the caliper and see what spacers I need.


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Offline jpfrk2001

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #43 on: December 18, 2013, 06:24:22 AM »
Ok, so far its bearing change out, Spacers, boring caliper, Fab up brackets for caliper, fab up mounts for Rear MC. So far, it looks like Im interested.

Looking good.
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Offline RustyOlive

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #44 on: December 18, 2013, 09:48:06 AM »
Outstanding work thus far man!
Your oilpan/swingarm idea. Fabricating the oil pan to fit the stock 750 swingarm, or fab up a swingarm from scratch?
I really dig the idea. Air flow under the engine might even help cool the oil as it hits the pan.. Lol in theroy ..
However.... (Excuse me while I have a brain fart) oil return line to the engine, is it not gravity fed feed? If oil pan is lower than the engine oil return inlet.... Orrrrr, am I off? Lol

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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #45 on: December 18, 2013, 10:17:11 AM »

Quote from: RustyOlive on December 18, 2013, 09:48:06 AM
Outstanding work thus far man!
Your oilpan/swingarm idea. Fabricating the oil pan to fit the stock 750 swingarm, or fab up a swingarm from scratch?
I really dig the idea. Air flow under the engine might even help cool the oil as it hits the pan.. Lol in theroy ..
However.... (Excuse me while I have a brain fart) oil return line to the engine, is it not gravity fed feed? If oil pan is lower than the engine oil return inlet.... Orrrrr, am I off? Lol

The swingarm will be fabricated from scratch.  The feed line into the engine is vacuumed by the pump and pushed through the engine. Then pushed into the oil can. Like how the pickup at the bottom of the engine in the cb550 works.

Fuller built this swingarm oil can on his cb750 so I know it can be done.



http://www.pumpsessions.com/2011/09/fuller-cb750-cafe-racer.html

Another guy over on DTT also did one a few years back.






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Offline RustyOlive

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #46 on: December 18, 2013, 10:38:13 AM »
Wicked!!! Knew it was done before.. Like I said. Brain fart.... Hahahaha.
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Offline greenjeans

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #47 on: December 18, 2013, 10:45:45 AM »
FYI the swing arm on that Fuller bike is off a Honda Ascot of all things -

And another thing - those are by far the best looking top clamp/triples I've seen in a very long while.  Simple, elegant, clean, beautiful.  I could go on.

« Last Edit: December 18, 2013, 10:58:20 AM by greenjeans »
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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #48 on: December 18, 2013, 11:08:38 AM »

Quote from: greenjeans on December 18, 2013, 10:45:45 AM
FYI the swing arm on that Fuller bike is off a Honda Ascot of all things -

And another thing - those are by far the best looking top clamp/triples I've seen in a very long while.  Simple, elegant, clean, beautiful.  I could go on.

Thanks!


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Offline CognitoMoto

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Re: Cognito Moto CB750 cafe with GSX-R forks
« Reply #49 on: December 20, 2013, 07:57:38 AM »
Got my seat pan and the length I want. This seat length doesn't work with the existing frame setup.









Trying to get it looking correct before anything gets welded.



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