77' Cb750 Wheel lacing question.

[blue collar]

Hey Gents,

I'm new to the forum and have tried searching for this answer but have had no luck.

My question: I have a '77 cb750 (19" fonr wheen and 17'' rear). Can I use my 17" rear hub and lace it to a factory 18" rear rim with factory 18" spokes? Did the hub change for the 1977-78 year? I know the rear sprocket spacing changed but did the hub flange change too?

Thanks in advance for any help

Chris

 

[Tim]

I have a dumb question - its for sure a 17 inch rim? Don't recall that and most people swap to 16 when they tried to chop them back in the day.

You should be able to bolt an 18 inch wheel onto your bike no problem or lace an 18 inch rim to it. Not sure if the stock 18 inch spokes would fit but they should.

Pics of your wheel?

 

[blue collar]

130/90-17 is my tire size on the rear. I'm new to bikes but I would assume this means that it's a 17'' rim.

 

[Tim]

Yup its a 17. A little odd. Chances are 99% the hub is stock and would readily accept a stock set of 18 inch spokes and the rim.

 

[kopcicle]

I would keep or sell the 17" rear setup and obtain the 18" from wherever . The 17" may well have been installed because of the now greater availability of 17" rubber . Before swapping for an 18 measure the circumference of the 17" tire and compare it with available 18" tires . There may be some surprises .

~kop

just saw this

http://www.dotheton.com/forum/index.php?topic=46332.msg282342;topicseen#new