Topic: 1976 cb750F Noob building a cafe

[unamusedd]

I got my rear wheel on the bike this past Friday. I think it looks great and really ties together the back end of the bike.

[unamusedd]

I've done a lot since my last post and I'm almost done with where I want the bike to be. I replaced the oil pump o-rings, drilled some extra holes in the clutch basket, and replaced the oil ring in the shifter side of the motor. Also added rear sets, cognito moto front wheel, new headlight, and new exhaust. The clutch basket did not go as planned, when I removed the cover I noticed the clutch lifter plate had a pretty big crack in it. When my new one finally arrived I damaged the pressure plate trying to install it but now all is well. Here are some pics.

[calj737]

Have you devised a hangar for the muffler yet? It would be highly advisable to craft one to suppor the weight of it and remove that from the exhaust studs.

[unamusedd]

Have you devised a hangar for the muffler yet? It would be highly advisable to craft one to suppor the weight of it and remove that from the exhaust studs.

I thought of that before installing but in all honestly it weighs significantly less than the Kerker that was on there and that exhaust was held on by the studs and one small bracket. Perhaps you're right though, when I get some time I'll see about fabricating a hanger.

[przjohn]

Bike looks great, nice work!

[unamusedd]

Bike looks great, nice work!

Thanks !

[knottedknickers]

I've done a lot since my last post and I'm almost done with where I want the bike to be. I replaced the oil pump o-rings, drilled some extra holes in the clutch basket, and replaced the oil ring in the shifter side of the motor. Also added rear sets, cognito moto front wheel, new headlight, and new exhaust. The clutch basket did not go as planned, when I removed the cover I noticed the clutch lifter plate had a pretty big crack in it. When my new one finally arrived I damaged the pressure plate trying to install it but now all is well. Here are some pics.

Are the headlight clamps / bracket your own design?

[unamusedd]

I've done a lot since my last post and I'm almost done with where I want the bike to be. I replaced the oil pump o-rings, drilled some extra holes in the clutch basket, and replaced the oil ring in the shifter side of the motor. Also added rear sets, cognito moto front wheel, new headlight, and new exhaust. The clutch basket did not go as planned, when I removed the cover I noticed the clutch lifter plate had a pretty big crack in it. When my new one finally arrived I damaged the pressure plate trying to install it but now all is well. Here are some pics.

Are the headlight clamps / bracket your own design?

Nope I got them off eBay but had to modify them to work with the fork size and headlight size.

[gatesb77]

Wow what a fun read. Great job on the bike looks cool!


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[SOHC4 Cafe Racer Fan]

That's still a significant amount of torque on the head with the exhaust left unsupported. You really should put a hanger on it.

[Retro Rocket]

Not trying to be negative Nancy here but, that pipe is useless for the street, it will hit the road very easily on the right hand side, I've said this to many people here and quite a few replaced the pipe. I recently had a member PM me and, after first not being happy with my assessment, told me that he had replaced the exhaust due to it hitting the road easily on the right side. It won't fold up like a footpeg and scraping it is fine, but if you need to turn sharper, or, you hit a small undulation while touching the pipe {compressing the suspension} you'll quickly find yourself sliding down the road without warning . There's a good reason sidewinder exhausts are made for drag racing, they don't do corners... It appears quite strange to me to make changes to a bike that benefit the  suspension and reduce suspension at the same time...? 

[unamusedd]

Not trying to be negative Nancy here but, that pipe is useless for the street, it will hit the road very easily on the right hand side, I've said this to many people here and quite a few replaced the pipe. I recently had a member PM me and, after first not being happy with my assessment, told me that he had replaced the exhaust due to it hitting the road easily on the right side. It won't fold up like a footpeg and scraping it is fine, but if you need to turn sharper, or, you hit a small undulation while touching the pipe {compressing the suspension} you'll quickly find yourself sliding down the road without warning . There's a good reason sidewinder exhausts are made for drag racing, they don't do corners... It appears quite strange to me to make changes to a bike that benefit the  suspension and reduce suspension at the same time...? 

Perhaps I don't take corners with enough lean but I haven't had an issue with the pipe hitting. I replaced my Kerker because going over any speed bump it would hit, and I would scrape going into my garage. I got the sidewinder because of its ground clearance. I'm not sure what other options I have, either I hit while going over speed bumps and coming into my own garage, or I can't take sharp right turns. The bike also sits about .75" higher in the front and .5" higher in the back since those pictures. Either way I appreciate your input and will keep an eye out on other exhausts that won't give me these issues.

[unamusedd]

Wow what a fun read. Great job on the bike looks cool!


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Thanks man I appreciate it.

[unamusedd]

That's still a significant amount of torque on the head with the exhaust left unsupported. You really should put a hanger on it.

Should be able to get some time to fab something up this weekend. Thanks for the input.

[gregalff]

Hi,

nice stealth build.
May I ask where i can buy those levers? Do they fit in the original handlebar control switch? (Brake and clutch?)

[unamusedd]

So its been awhile since I've posted and thats mostly cause I've been spending every second of free time either taking her out for a rip around some twisties or working on a few other projects. Did a few new changes to her but mostly because I had to. Started burning oil real bad on cylinder number 4 to the point where I couldn't ride her without leaving a cloud of smoke everywhere I went. I was heartbroken because although I did plan on tearing the motor apart over the winter, I wanted to make it to the gentlemen's ride in NYC. Luckily, I bought a 78 750 as a parts bike a few months ago that hadn't ran since 99 so I tested my luck and did a motor swap. Squirted some oil in all the cylinders and cam, along with fresh oil, filter and new plugs and she came alive and is still running strong 2k miles later. Also been in the process of making a seat for a passenger out of fiberglass. Here are some pics







Heres a pic of the fiberglass seat mounted and painted.

Now just needs upholstery.
Heres a pic of the DOHC seat I'm currently working on

Still have a lot left to do before I consider her done but she's definitely getting closer. Now need to decide what to do with the spare motor I have. If I get some funds I might rebuild it with some headwork but I'm not sure yet.