Topic: Sprocket, Wheel, Chain Question

[seaweb11]

This is an edited text from the FAQ section. I have been reading

My question: If the below is true, and I have no reason to doubt it, what would my best bet be for me to get back to a stock configuration knowing that I have a 16" on the rear now?

Both his and mine are both CB750 K8s


"In reading many posts online here, I had been thinking of the 630 to 530 conversion, and decided to give it a whirl.  The 15/41 630 setup has a 2.73 ratio.  Closest I could get in a 530 was an 18/48 (2.67 ratio).  I was wanting to gear it down a bit to reduce RPM's on the highway, so that sounded good.  Because the front sprockets were only $22, I ordered a 17t and an 18t, along with the 48t rear."

"Before swapping the sprockets/chain, I wanted to compare RPM's at different speeds.  With the 15/41/630 setup, the bike spun in 5th at 70MPH, 5300RPM.  With the 18/48/530 setup, 70 MPH in 5th is at 5200RPM.  In 2nd, the 15/41 would hit 67 at redline (8500), the 18/48 got up to 70MPH at 8500RPM."

Anyone care to take a shot at my 16" rear wheel change on this.

nut ulat of areithmatic buuk lurnin in mi husoe

[Gordon]

What size tire do you have on that 16" rim?  If it's a relatively tall tire the fact that you have a smaller rim may not make that much difference. 

[754]

Measure the height of the tire, its probably within  1/2 in of the Stock 18 in tire sizes..

 .. nothin to worry about, unless you rather it did something else.