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Offline Snox

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Sprockets and real world differences
« on: July 14, 2019, 11:52:59 AM »
Got a street r 13 plate and have a -1 tooth front sprocket ready to go on . Question is...is it worth changing the rear to a different size ? I am looking for low down . 100 mph + doesn't bother me .
Any one messed about with sprockets wanna suggest best way to go with this .

Offline Tomspurs

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Re: Sprockets and real world differences
« Reply #1 on: July 14, 2019, 12:42:05 PM »
Just do the front...that way you dont have to lengthen / shorten the chain, which is the expensive bit...summary: Front sprocket 10 odd, rear 50 odd...chain 90 odd...simples  :028:
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Offline F5 Dave

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Re: Sprockets and real world differences
« Reply #2 on: July 14, 2019, 08:55:52 PM »
I went 1 smaller and decided, on my 11, that it didn't do anything for me.   So I put it back.  But I took a couple of links out and loved the difference of a shorter wheelbase. 

Online gosling 1

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Re: Sprockets and real world differences
« Reply #3 on: July 14, 2019, 09:53:57 PM »
I tried a -1 front, +1 rear 520 set up for a while. Acceleration in the lower gears was fun but overall I preferred the stock gearing. First and second are a bit tall on the '13-'16 bikes with the stock gearing but third through sixth seem feel just right to me.
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Offline dunf

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Re: Sprockets and real world differences
« Reply #4 on: July 15, 2019, 06:53:11 AM »
You can go pretty far with the changes if youre not bothered about top end as much. I used to run -2 front, plus 5 rear for a track bike gsxr at knockhill.  :002:

Offline JulesW

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Re: Sprockets and real world differences
« Reply #5 on: August 05, 2019, 04:59:48 PM »
I run front -1, rear +2, standard chain. I really like the acceleration improvement and the lower top speed doesn't bother me at all. This set up is fun on the road, great on track and ok when touring.



Offline OuzoStreet

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Re: Sprockets and real world differences
« Reply #6 on: August 09, 2019, 12:43:22 PM »
Here's a spreadsheet to allow you to see what changes different sprockets would make in cold, hard numbers. It doesn't tell you anything about the way the bike woukdt feel of course, but you get the idea. Usefully, if you change the "Maximum power RPM" cell to whatever revs you like to cruise at, you can see what speed that will give you. Hope that makes sense.

By the way, I've got it set up for my first gen 2009 bike that has lower gearing. Just enter the figures for yours from the manual...

Sorry, I had to put it in a zip file to upload it. Here's a screenshot of what it looks like:

Offline JulesW

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Re: Sprockets and real world differences
« Reply #7 on: August 09, 2019, 01:11:43 PM »
Gearing commander is a good web based resource.

https://www.gearingcommander.com/

Offline 2012StreetT

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Re: Sprockets and real world differences
« Reply #8 on: August 09, 2019, 10:31:23 PM »
*Originally Posted by OuzoStreet [+]
Here's a spreadsheet to allow you to see what changes different sprockets would make in cold, hard numbers. It doesn't tell you anything about the way the bike woukdt feel of course, but you get the idea. Usefully, if you change the "Maximum power RPM" cell to whatever revs you like to cruise at, you can see what speed that will give you. Hope that makes sense.

By the way, I've got it set up for my first gen 2009 bike that has lower gearing. Just enter the figures for yours from the manual...

Sorry, I had to put it in a zip file to upload it. Here's a screenshot of what it looks like:

This is brilliant, thank you

Offline OuzoStreet

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Re: Sprockets and real world differences
« Reply #9 on: August 09, 2019, 11:10:33 PM »
*Originally Posted by 2012StreetT [+]
This is brilliant, thank you

You're welcome. If you want a laugh, here's my ZX10r. Crazy numbers, which is why the Street Triple is more fun around town etc  :001:

 


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