Versys 1000 Forum

Versys 1000 => General Maintenance, Servicing, and Mechanical issues => Topic started by: Claude on September 29, 2018, 04:38:05 PM

Title: Rear sprocket question
Post by: Claude on September 29, 2018, 04:38:05 PM
Whatís the smallest sprocket that can be installed on the rear wheel? I mean, without creating any chain rubbing problem.

I know some here already fitted 41T and Iím wondering if smaller ones are possible or available.

I always install longer gearing on my bikes and intend to do the same on my V1000. I already have a 16T that Iíll install next winter, even if my bike will have about 7800 km.
Title: Re: Rear sprocket question
Post by: Sonny on September 29, 2018, 05:59:56 PM
Without going over a jillion posts on this subject, my impression is that 41 at the wheel is the lower limit with the stock length chain, and if higher ratio is still desired then you go up a tooth on the front.
Title: Re: Rear sprocket question
Post by: longdog on September 30, 2018, 07:08:53 PM
A rough rule-of-thumb is 1 extra tooth on the front, (gearbox drive), sprocket is equivalent to coming down 3 teeth on the rear wheel sprocket.
Title: Re: Rear sprocket question
Post by: Claude on October 01, 2018, 12:06:34 AM
FYI, JT do have sprockets for Versys 1000. Available sizes are:

Front: 14T, 15T, 16T, 17T, 18T and 19T. (strange as I think larger than 17T do not fit in the crankcase...).

Rear: 44T, 43T, 42T, 41T, 40T and 39T

With a 16T front, I won't go smaller than a 41T rear.
Title: Re: Rear sprocket question
Post by: Dannyboy1949 on December 16, 2018, 05:24:50 PM
Not knowing how the speed and distance info is sourced by the computer....will a gearing change affect the speedo/odo?
Title: Re: Rear sprocket question
Post by: Floydsz1 on December 16, 2018, 06:38:49 PM
It does effect the gear indicator. It can't make its mind up which gear it's in.
Title: Re: Rear sprocket question
Post by: TowerMan on December 16, 2018, 06:48:10 PM
*Originally Posted by Dannyboy1949 [+]
Not knowing how the speed and distance info is sourced by the computer....will a gearing change affect the speedo/odo?
This is taken from the front / rear ABS ring, so a change of front / rear sprocket sizes will not affect the speedo / odo, but

*Originally Posted by Floydsz1 [+]
It does effect the gear indicator. It can't make its mind up which gear it's in.

Richard  :001:
Title: Re: Rear sprocket question
Post by: Dannyboy1949 on December 16, 2018, 07:56:19 PM
Thanks!!
Title: Re: Rear sprocket question
Post by: Sonny on December 16, 2018, 08:43:18 PM
An electronic gear indicator has to work on a simple "if, then" software routine with numbers put in... in other words "if wheel speed (a) is a certain number, and engine rpm (b) is a certain number, then (c) is the gear number.

A sprocket change wouldn't break the indicator, it would just slew the numbers up or down and un-calibrate it.
Title: Re: Rear sprocket question
Post by: Floydsz1 on December 17, 2018, 11:39:01 AM
*Originally Posted by Sonny [+]

A sprocket change wouldn't break the indicator, it would just slew the numbers up or down and un-calibrate it.

Correct, mine swops numbers without changing gear.
Title: Re: Rear sprocket question
Post by: attyla on January 11, 2019, 07:31:12 AM
*Originally Posted by Claude [+]
Whatís the smallest sprocket that can be installed on the rear wheel? I mean, without creating any chain rubbing problem.

I know some here already fitted 41T and Iím wondering if smaller ones are possible or available.

I always install longer gearing on my bikes and intend to do the same on my V1000. I already have a 16T that Iíll install next winter, even if my bike will have about 7800 km.

But a crown with 41 teeth can I mount it?  :027:

I'm afraid of not having enough registration for the tension of the chain ....   :notsure:

 :42:   :763: