Topic: 1971 CB750 with GSXR Front End

[Retro Rocket]

As for shocks, I've been told by Buzz at Dynoman that the Ohlins will not fit.  You may want to consider Race Tech, Works and (now) Fox for adjustable good quality performance shocks.

I would be curious to hear why Buzz thinks the Ohlins wouldn't fit, I've already seen a couple of 750/4's running Ohlins and I'm seriously considering a set for myself....   I know they don't make a specific model for the 750 but i was planning on using the ones for the Boldor Honda's, in saying that, I am moving the shock mounts because the Ohlins for the Boldors are longer, Maybe Buzz means they don't have a Honda 750/4 specific model..?  As we all know, anything can be made to fit...

[RobbyD]

Idk if I missed it but have you set up a pan under the seat for a electronics tray yet?

[GNGSXR]

I really like this look for a compromise between an open and closed triangle.
http://thebikeshed.cc/2014/04/07/justins-rd350/

[SOHC4 Cafe Racer Fan]

As for shocks, I've been told by Buzz at Dynoman that the Ohlins will not fit.  You may want to consider Race Tech, Works and (now) Fox for adjustable good quality performance shocks.

I would be curious to hear why Buzz thinks the Ohlins wouldn't fit, I've already seen a couple of 750/4's running Ohlins and I'm seriously considering a set for myself....   I know they don't make a specific model for the 750 but i was planning on using the ones for the Boldor Honda's, in saying that, I am moving the shock mounts because the Ohlins for the Boldors are longer, Maybe Buzz means they don't have a Honda 750/4 specific model..?  As we all know, anything can be made to fit...

Mick,
I asked him about a year ago.  They ARE available eye to clevis, but the Dynoman site says they "will not work on CB750 SOHC 1969-78."  I feel a little silly asking Buzz a third time, but I sent him an email asking again.
Don

[Roach Carver]

very cool bike. marked!

[Retro Rocket]

As for shocks, I've been told by Buzz at Dynoman that the Ohlins will not fit.  You may want to consider Race Tech, Works and (now) Fox for adjustable good quality performance shocks.

I would be curious to hear why Buzz thinks the Ohlins wouldn't fit, I've already seen a couple of 750/4's running Ohlins and I'm seriously considering a set for myself....   I know they don't make a specific model for the 750 but i was planning on using the ones for the Boldor Honda's, in saying that, I am moving the shock mounts because the Ohlins for the Boldors are longer, Maybe Buzz means they don't have a Honda 750/4 specific model..?  As we all know, anything can be made to fit...

Mick,
I asked him about a year ago.  They ARE available eye to clevis, but the Dynoman site says they "will not work on CB750 SOHC 1969-78."  I feel a little silly asking Buzz a third time, but I sent him an email asking again.
Don

I suspect its exactly like I said, there are none made specifically for the 750 but thats never stopped anyone before....

[SOHC4 Cafe Racer Fan]

That one's pretty damn spectacular.  The 17s almost make it look like an enduro stance.  Those 4-4 pipes must be LOUD in an awesome way. 

[saltcitycafe]

I made my own cognito oil tank, it was super easy and I got the cap from bungking.com

[GNGSXR]

Idk if I missed it but have you set up a pan under the seat for a electronics tray yet?

Not yet but I will build one after the gas tank modifications are finally complete.

[zekd]

I made my own cognito oil tank, it was super easy and I got the cap from bungking.com

Make me one!! 

[saltcitycafe]

I made my own cognito oil tank, it was super easy and I got the cap from bungking.com

Make me one!! 

Lol that might have been a one time deal but money always talks

[ramsus42]

Wow, Such a great project and inspiration to me.
Just finished my xv750 build, and now started with my cb750 build. Already have a gsxr front end with allballsbearing bearings.
I just noticed you're swing arm conversion. Great, really like the stretched look. In Holland I almost bought this swing arm:

http://www.marktplaats.nl/a/motoren/onderdelen-oldtimers/m802194875-achterbrug-honda-cb550-cb-550-origineel.html?c=8c285449651fa109c354bbabe740c1b&previousPage=lr

It's also for a cb550 but it looks to me it isn't the right one because of the sleeves on the rear. They are closed, yours are open.

Do you know from wich year you have youre cb550 swing arm?

Sorry for my grammatic, I'm from holland

[SOHC4 Cafe Racer Fan]

As for shocks, I've been told by Buzz at Dynoman that the Ohlins will not fit.  You may want to consider Race Tech, Works and (now) Fox for adjustable good quality performance shocks.

I would be curious to hear why Buzz thinks the Ohlins wouldn't fit, I've already seen a couple of 750/4's running Ohlins and I'm seriously considering a set for myself....   I know they don't make a specific model for the 750 but i was planning on using the ones for the Boldor Honda's, in saying that, I am moving the shock mounts because the Ohlins for the Boldors are longer, Maybe Buzz means they don't have a Honda 750/4 specific model..?  As we all know, anything can be made to fit...

Mick,
I asked him about a year ago.  They ARE available eye to clevis, but the Dynoman site says they "will not work on CB750 SOHC 1969-78."  I feel a little silly asking Buzz a third time, but I sent him an email asking again.
Don

No response from Buzz.

[GNGSXR]

Wow, Such a great project and inspiration to me.
Just finished my xv750 build, and now started with my cb750 build. Already have a gsxr front end with allballsbearing bearings.
I just noticed you're swing arm conversion. Great, really like the stretched look. In Holland I almost bought this swing arm:

http://www.marktplaats.nl/a/motoren/onderdelen-oldtimers/m802194875-achterbrug-honda-cb550-cb-550-origineel.html?c=8c285449651fa109c354bbabe740c1b&previousPage=lr

It's also for a cb550 but it looks to me it isn't the right one because of the sleeves on the rear. They are closed, yours are open.

Do you know from wich year you have youre cb550 swing arm?

Sorry for my grammatic, I'm from holland

It is off a 1976

[GNGSXR]

I am playing catch up with my day job after going to Austin for moto gp and the hand built motorcycle show so I haven't been able to do much to the bike lately.
 
Here is every single bike that was at the show. https://imgur.com/a/DSJVR#0

I also ordered a set of these http://cognitomoto.com/collections/suspension/products/fox-podium-rc1-rear-shocks

[SOHC4 Cafe Racer Fan]

I am playing catch up with my day job after going to Austin for moto gp and the hand built motorcycle show so I haven't been able to do much to the bike lately.
 
Here is every single bike that was at the show. https://imgur.com/a/DSJVR#0

I also ordered a set of these http://cognitomoto.com/collections/suspension/products/fox-podium-rc1-rear-shocks

Thanks for posting the pictures from the Handbuilt Show.

That is one nutty looking front end in the 3rd picture.  Some great pictures of Devon's (Cognitomoto) build.  I also saw the picture of the Roland Sands KR street tracker (pics 12-14).  That has a Kenny Roberts/Proton V5 MotoGP engine that produces somewhere around 260 hp!   Walt Seigel Ducati, Confederate, Shiny, Deus, Analog, all kinds of crazy stuff, including THAT dragster (pic  64).  Crazy weird-stuff on 79-81 -- I don't know how that's remotely rideable??!! 

[GNGSXR]

I am playing catch up with my day job after going to Austin for moto gp and the hand built motorcycle show so I haven't been able to do much to the bike lately.
 
Here is every single bike that was at the show. https://imgur.com/a/DSJVR#0

I also ordered a set of these http://cognitomoto.com/collections/suspension/products/fox-podium-rc1-rear-shocks

Thanks for posting the pictures from the Handbuilt Show.

That is one nutty looking front end in the 3rd picture.  Some great pictures of Devon's (Cognitomoto) build.  I also saw the picture of the Roland Sands KR street tracker (pics 12-14).  That has a Kenny Roberts/Proton V5 MotoGP engine that produces somewhere around 260 hp!   Walt Seigel Ducati, Confederate, Shiny, Deus, Analog, all kinds of crazy stuff, including THAT dragster (pic  64).  Crazy weird-stuff on 79-81 -- I don't know how that's remotely rideable??!!

79-81 was built by http://rkconcepts.com/. That bike was on display for the duration of the show but the builder showed up Saturday night on one of his other creations and rode it a fair distance home. They are rideable but the definition of rideable is being stretched with his builds.

[GNGSXR]

New battery came in.

[CognitoMoto]

New battery came in.

I switched to that battery on my 550 and now it starts on a kick and I can pass inspection. They kick ass


www.CognitoMoto.com

[calj737]

+4 on that battery. Despite the naysayers, those work extremely well and offer some huge advantages of installation over the standards. Sometimes technology is actually progress...

[SOHC4 Cafe Racer Fan]

I was wondering about the size since Shorai recommends a larger (taller not wider) model for the 550 and and even larger one for the 750 - each with more amp hours. I called their customer service number, and the rep said with our vintage bikes we often have more cold start issues requiring more cranking to start.

[calj737]

I'm pretty sure the A2 and A5 are equally rated, the A5 just being a larger frame. That accommodates a stock drop in installation versus hiding the A2 more easily.

I just put the A2 in an ATV, used the supplied foam pads to take up the extra space, and snugged it right up. Click-crank-vroom! Left the utility pigtail installed for off season charging. Love these things...

[SOHC4 Cafe Racer Fan]

I'm pretty sure the A2 and A5 are equally rated, the A5 just being a larger frame. That accommodates a stock drop in installation versus hiding the A2 more easily.

I just put the A2 in an ATV, used the supplied foam pads to take up the extra space, and snugged it right up. Click-crank-vroom! Left the utility pigtail installed for off season charging. Love these things...

The customer service rep told me the A5 has slightly more amp hours (like .5), but the specs on their website shows the same 14Ah for both.  Go figure!

[GNGSXR]

Yah the site shows the LFX14AL5-BS12 and the LFX14A2-BS12 as identical specifications other than dimensions/weight.

I got the A2 since this will be installed in the cowl of my bike.

[GNGSXR]

Popped the oil tank off and started to cut and grind frame tabs that I won't be needing anymore. My fabricator has been helping me out a lot on this project but he is getting backed up with other projects. Since he is helping me out for basically nothing, I understand that his time on my project is becoming more limited. With that said, I ended up ordering the oil tank http://cognitomoto.com/collections/cognito-moto-designs/products/bolt-on-cb750-oil-can
I'll worry about getting my own welder and metal fab tools next winter to attempt to try and make my own parts.



I am waiting on the CB500T gas tank to be finished. It has taken a bit more than expected to make it fit this bike. We cut off about a 3/4 of an inch from the back of it and heated/beat that area back into a useable shape. We then needed to cut out two on the underside of the tank to make room for the carbs. We should have the tank closed back up this week.