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Offline Moliver46

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Anyone changed the gearing??
« on: November 06, 2018, 09:08:34 PM »
Hi just wounding if anyone has changed the gearing by going one tooth bigger on the front and if they have what change it made and is the mph still right? Thanks  :305:

Offline SimonUK

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Re: Anyone changed the gearing??
« Reply #1 on: November 06, 2018, 09:24:18 PM »
I am currently running a 42 tooth rear sprocket(stock is 45). I do not think you can fit a bigger sprocket up front, space wise. Speedo remains accurate as the reading comes form the front ABS unit.

Offline Moliver46

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Re: Anyone changed the gearing??
« Reply #2 on: November 06, 2018, 09:26:10 PM »
Ok thanks what sort of top speed you getting and does in make the gears a bit longer. They do a 18t for the front so that should fit Im guessing.

Offline podders

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Re: Anyone changed the gearing??
« Reply #3 on: November 06, 2018, 09:40:38 PM »
*Originally Posted by Moliver46 [+]
Ok thanks what sort of top speed you getting and does in make the gears a bit longer. They do a 18t for the front so that should fit Im guessing.

Take the sprocket cover off and have a look , there isnt much room 'tween chain and crankcase.

Always like the acceleration on the stock gearing but ill admit it is a bit buzzy at motorway speeds, maybe a sports bike would be better for you if top speed is really important?






Offline Alan

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Re: Anyone changed the gearing??
« Reply #4 on: November 06, 2018, 09:48:10 PM »
Why would you want taller gearing?  Do you want more top speed?  I have always gone the other way, I was running -1+2 on my ZX10R which was perfect, was thinking of going -1 on the front on the S1000R to make it a bit livelier

Offline beech

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Re: Anyone changed the gearing??
« Reply #5 on: November 08, 2018, 07:27:56 PM »
If you can I would go larger on the rear rather than -1 on the front. Making the front sprocket smaller (I know they sell them) is harder on your chain than going larger in back. But you will probably need a 120 link chain and it is a lot more work that the simple change out of the front.

Offline LTRRTL

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Re: Anyone changed the gearing??
« Reply #6 on: November 09, 2018, 01:39:09 PM »
*Originally Posted by SimonUK [+]
I am currently running a 42 tooth rear sprocket(stock is 45). I do not think you can fit a bigger sprocket up front, space wise. Speedo remains accurate as the reading comes form the front ABS unit.
Any top speed figure ? Wanting to change mine for the track.
😝

Offline SimonUK

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Re: Anyone changed the gearing??
« Reply #7 on: November 09, 2018, 02:16:15 PM »
*Originally Posted by LTRRTL [+]
Any top speed figure ? Wanting to change mine for the track.

Nope, sorry.

Offline Alan

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Re: Anyone changed the gearing??
« Reply #8 on: November 09, 2018, 11:46:48 PM »
3 teeth on the back or 1 tooth on the front appears to make roughly a 10mph difference.  Stock gearing (17/45) at 11,000rpm = 150mph, 42 tooth rear = 160mph and 48 tooth rear = 140mph

You can use Gearing Commander to check what differnce a gearing change will make
https://www.gearingcommander.com/
« Last Edit: November 09, 2018, 11:47:36 PM by Alan »

Offline LTRRTL

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Re: Anyone changed the gearing??
« Reply #9 on: November 09, 2018, 11:54:05 PM »
*Originally Posted by Alan [+]
3 teeth on the back or 1 tooth on the front appears to make roughly a 10mph difference.  Stock gearing (17/45) at 11,000rpm = 150mph, 42 tooth rear = 160mph and 48 tooth rear = 140mph

You can use Gearing Commander to check what differnce a gearing change will make
https://www.gearingcommander.com/
Awesome thanks for info  :152: Just getting eaten up down the longer straights.
😝

 


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