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Author Topic: 16" rear wheel and sprocket question  (Read 806 times)

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Offline ironbutter

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16" rear wheel and sprocket question
« on: November 23, 2009, 07:10:18 PM »
If my 71 CB750 has had a 16" rim laced to the OEM hub, should I be considering changing my sprockets? Like 14T up front or less than 41 on the rear? Thanks for any replies, I searched and could not find anything. I have NO chain currently, so Im looking to get one, but I dont want to pull the trigger if Im going to have to change my sprockets.
« Last Edit: November 23, 2009, 07:14:58 PM by ironbutter »
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Offline MCRider

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Re: 16" rear wheel and sprocket question
« Reply #1 on: November 23, 2009, 08:10:22 PM »
Quote from: ironbutter on November 23, 2009, 07:10:18 PM
If my 71 CB750 has had a 16" rim laced to the OEM hub, should I be considering changing my sprockets? Like 14T up front or less than 41 on the rear? Thanks for any replies, I searched and could not find anything. I have NO chain currently, so Im looking to get one, but I dont want to pull the trigger if Im going to have to change my sprockets.
Usually the overall diameter of the 16 is not much less than the origianl 18 as the carcass of the tire is so big.

I don't know where such small sprockets as 14/51 could be had. A 14/41 combo is very nearly the same ratio as a 17/48 which was stock on most CB750s (or 18/41, a little taller). The slightly smaller rear wheel will lower the ratio to an effective 16/48 which was a poplar drag racing ratio. Quick get away with tolerable cruising and gas mileage.

I'd suggest the 17/48 for overall performance and chain life. Chains live longer on larger diameter sprockets.

PS I have 3 good used 48T sprockets (no fronts) that have been cryogenecally treated for less friction and longer life. $10 plus shipping (probably $10)
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Offline ironbutter

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Re: 16" rear wheel and sprocket question
« Reply #2 on: November 23, 2009, 10:19:11 PM »
Thanks MC, well it sounds like the stock setup will be fine, Im thinking my sprockets are in usable condition as the bike only has 8K on the clock. Maybe I should get the 48T from you for a backup. Thanks for the reply.
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