Changing sprocket - Page 2 - Honda CBR500R Forum : CB500F and CB500X Forums
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post #11 of 20 (permalink) Old 03-13-2016, 05:27 PM
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Quote:
Originally Posted by tothezenith View Post
With the stock combination, the chain has to do 615 revolutions before the same link-tooth comes around. Whereas a 16/41 combo only needs 41 revolutions to the same link-chain.
I also love GC .
Quick correction on what you saying: on a 16T:41T combination the front sprocket has the same tooth-same link every rotation, while it takes every 41 times at the rear - thus 41 times when it is on both the rear and front.

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post #12 of 20 (permalink) Old 03-13-2016, 06:05 PM
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one thing that you need to keep in mind too (apart from the mathematics aspect) ... i think i red somewhere here on the forum here, that anything bigger than 16 will require additional modifications to the front cover (because it just won't fit), so you will be probably better off changing the rear (and probably easier too)
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post #13 of 20 (permalink) Old 03-13-2016, 06:13 PM
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There was a good video of changing to a 17T drive sprocket.
Mainly having to grind a bigger arc on the chain "guard" that prevents the chain from coming off the sprocket.
The other problem is getting 17T sprocket to fit.

ride safely,
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post #14 of 20 (permalink) Old 03-13-2016, 10:00 PM
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I went up 1 on my countershaft sprocket shortly after buying my 2014 CB500F. I also used an aftermarket electronic speedometer corrector to keep my speedometer accurate. My MPG improved and I can cruise at high speeds at a more relaxed RPM. My 1st gear seems more usable than before...it doesn't seem to be too low any more. If the acceleration was hampered by the change, I'd have to have a stop watch to tell. I wouldn't recommend going any higher on the gearing (than 1 on the countershaft). You'd probably start actually feeling the tiny bit more distance between the gears as well as a decrease in sensed acceleration. I'm very pleased with the results and am not going to change it back. Chain wear seems the same as before.
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post #15 of 20 (permalink) Old 11-25-2017, 07:47 PM
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So 17F 43R set up with a stock chain is ideal setup to lower the RPMs on the highway?

Is there anything wrong with a 15F(Stock) & 39R sprocket setup?

2016 CB500F - Black

Last edited by Spitfire500; 11-25-2017 at 08:55 PM.
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post #16 of 20 (permalink) Old 12-18-2017, 11:18 PM
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Originally Posted by Spitfire500 View Post
So 17F 43R set up with a stock chain is ideal setup to lower the RPMs on the highway?

Is there anything wrong with a 15F(Stock) & 39R sprocket setup?
No, nothing wrong with 15/39, but it starts to make 6th an overdrive gear.The stock bike should not be able to achieve redline in 6th gear. Making 6th even more of an overdrive starts to make 1st gear need a bit of slippage on uphill starts. I'm happy with either the stock 15/41 or the 15/39 gearing using the NC700 39-tooth sprocket.

I really want to just use the OEM 15-tooth drive sprocket to ensure a good fit on the counter shaft.

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Last edited by jsonder; 12-18-2017 at 11:19 PM. Reason: typo
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post #17 of 20 (permalink) Old 07-12-2019, 08:53 PM
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Great posts on sprockets. I want to keep my 15T front, but go to a 38T or 39T rear on 2013 CB500X for more highway speed. Please advise if you know of good choice. I searched on revzilla but only found 41T to 45T for my bike.
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post #18 of 20 (permalink) Old 07-12-2019, 10:58 PM
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As JSonders indicated "the NC700 39-tooth sprocket." is what to buy (from Honda)
It fits the Honda 500 bikes.


Ride safely,

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post #19 of 20 (permalink) Old 07-14-2019, 08:32 PM
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I have added a link below. It's a simple "Sprocket Calculator" that lets you plug in the OEM numbers, then change sprockets' numbers to see the differences in speed and torque of the bike. It also shows how these changes effect the length of the chain per number links gained or lost.
https://sprocketcalculator.com/

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post #20 of 20 (permalink) Old 07-24-2019, 03:14 PM
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Another site with a lot of information about the effects of changing sprocket sizes is gearingcommander. That site has many bikes in a database with sprocket information.
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