Topic: 1976f swing arm swap to a 1972 cb750 frame?

[la ca fe]

I have a rear end to a '76f frame (wheel, swing arm, brakes...) and am wondering if it will be a easy bolt on to a '72 frame?
Will the sprockets line up? Or is there any fabrication needed?

Thanks.

[Don R]

 The drum to disc brake conversion is the obvious problem. At minimum the brake stay will need to be modified to work on a drum brake or if you go with disc brakes the master cylinder needs mounted.

[70CB750]

I used 78F engine, wheels, forks and swingarm in 73 frame.  See my built thread:

http://forums.sohc4.net/index.php/topic,115305.msg1299318.html#msg1299318

rear brake uses CBR900 Master cylinder and I also had to replace the left rear top shock mount.

[la ca fe]

Will the sprockets line up if I use the rear disk conversion?

I am hoping to do a direct bolt on, '76f rear swing arm, disc brake hub and 17" Hondamatic aluminum spoke rim. I will fabricate rear sets.

[70CB750]

They did for me, since I used 78 engine and wheels.


Here is some info on sprocket carriers, all the way down on that page:

http://www.cyclexchange.net/Chain%20Sprocket%20Page.htm

[Jerry Rxman Griffin aka MuthaF'er]

Will the sprockets line up if I use the rear disk conversion?

I am hoping to do a direct bolt on, '76f rear swing arm, disc brake hub and 17" Hondamatic aluminum spoke rim. I will fabricate rear sets.

Should be fine as long as you are not using a 77 or 78 engine. The output shaft of the 76 F is the same length as yours, just doesn't have the chain oiler that you do.

I'm doing a 78 engine in my 75 F frame. Different output shaft so I gotta change everything behind it including swing arm and rear sprocket carrier and I'm having an adapter custom made for the left upper shock mount.

[la ca fe]

Thank you very much!