cbr wheels on a cb750

[surffly]

I was kicking around the idea of running CBR wheels on a 78 cb750F of mine.
Have not seen many sohc bikes with the swap, seems like the DOHC guys run them all the time with good luck.

I assume that it would be much better to use the cbr600f2 wheel as i runs a mechanical speedo drive and the early ones seem to be 4.5 wide.

I understand that its not just a bolt on and go kind of thing but wanted to know if there was a list of parts that is easier to make work and what not

I would like to not have to get crazy with the swingarm, i think that the largest tire that fits in the stock SOHC arm is like 160 so i guess thats close....

if i swapped to a DOHC swingarm would things bolt together better in the rear?
will the F2 wheel be made to work with the stock forks or is it just that much easier to just swap the whole front ends?

i know that this bike does not have stock forks or swingarm but its kinda the stance im talking about

 

[bbqb4racin]

I think a very common swingarm to use on the older bikes is the Kawasaki ZR1100/1200 arms. The dimensions are favorable, external shocks, etc. Might not be a perfect bolt on but damn close. It appears the Honda in the pic is using that particular arm. As far as the front end goes, I'd just change out the whole thing rather than adapt a wheel. Definately a better upgrade. A lot of times it's just a matter of swapping out steering stems and modding the steering stops.

BTW, I don't want this to sound really simple or like it's going to be a bolt and go. Lot's to consider when doing these kinds of mods. Good luck with your build!

One more thing, that Honda is sweet!

 

[hillsy]

That looks like a JMC swingarm on that CB.

You could also consider a GS1100 alloy swingarm (similar dimensions to the ZRX).

 

[surffly]

yea i will swap the swing arm if i have to but dont think i really need to.
and yes the fork swap is not that hard.

just kinda liked the idea of just changing the wheels

 

[1969Honda]

Not sure what your bearing size would need to be off hand but I've got a set of CBR600f2 wheels in the works for my '69 CB350, all I've had to do so far to the front is swap bearings and modify the cable for the speedometer and where it enters the gauge as the CBR600 cable is a smaller square shaft. The rear I'm going to have to mill down the sprocket carrier at the sprocket, back of the carrier and the face of the wheel where the carrier mates to the wheel, it's all feasible but with the wheel at stock widths the sprocket bolts hit my swing arm. If you need any dimensions of wheel widths or anything let me know.

BTW what wheels do you currently have on your 750? I'm toying with the idea of going to comstars but I'm worried I'll run into the same swingarm width problems.

 

[surffly]

I have Lester mag wheels on my K and F right now.
The bike I'm thinkinking about running the cbr wheels on has comstars.

I'm sure the comstars will take just as much work for you and at the end of the day here is no real gain.
Unless you are one Few people that likes those wheels

 

[1969Honda]

Not huge on the comstars, just thinking they might look better than the cbr wheels and be a little bit lighter. I'm going to have to take of 5 mm on my carrier cush drive dogs, 5mm on the wheel surface, plunge the inner bearing pocket a little and then shave down the sprocket side of the carrier just to get it all to line up right. I used to have access to a mill and lathe when I got the wheels but have since changed jobs and moved from that area. Oh, and a I still need to see if a -150 or 140/17 will fit the swinger better.

 

[pancakecircus]

Where you ever able to make these work? i'm thinking of trying them on a '81 750c and was curious to the work involved. Right now i have the comstar 16" rear (with drum) and 19" front.

 

[surffly]

I never did.

From what i read on the cb1100F site its almost bolt on for the DOHC F bikes.

Not sure about the C....they are cruiser bikes with different frames and not built at all to perform so i dont know if its just a case of no one tried or they cant