I have a question for users who have done such a modification or know the issue - we translated the F3 rear gear wheel into a large 89 teeth and after driving a piece of road errors appear - we changed the setting "Final Drive Ratio" etc. but somewhere else something is wrong and we can not calculate get it right - maybe someone can help?
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Final Drive Ratio 89 error
- Thread starter Syciu
- Start date
Altho quite a few have tried, I don't believe that anyone has been successful in changing the size of the final drive gear that their particular Spyder left the factory with while retaining anything much of the factory ECU/VSS set-up..... yet!! :gaah:
I'm pretty sure that hidden somewhere in the proprietry software/set-up in there somewhere, there is an established relationship/link between the drive gear tooth count & the country code that causes these errors if the number of teeth/rear wheel rotations don't match what the factory set-up calls for jnder that set-up; and there's seemingly also a similar link between the drive gear tooth count and the model, or maybe even the VIN.... :dontknow:
Whatever those links may be, like I said above, I don't think ANYONE has yet managed to get a Spyder with the standard ECU/VSS suite to successfully run error free after changing the final drive gear tooth count.... but I'd love to be shown to be wrong about that if someone knows more??? :thumbup:
I'm pretty sure that hidden somewhere in the proprietry software/set-up in there somewhere, there is an established relationship/link between the drive gear tooth count & the country code that causes these errors if the number of teeth/rear wheel rotations don't match what the factory set-up calls for jnder that set-up; and there's seemingly also a similar link between the drive gear tooth count and the model, or maybe even the VIN.... :dontknow:
Whatever those links may be, like I said above, I don't think ANYONE has yet managed to get a Spyder with the standard ECU/VSS suite to successfully run error free after changing the final drive gear tooth count.... but I'd love to be shown to be wrong about that if someone knows more??? :thumbup:
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If your able to get this working "PLEASE SHARE WITH US"...Several F3 owners have tried, and I know of no one that succeeded...It should be doable on the F3 since they have a selection in the ECM menu...I would like to make the 89 T sprocket work on my 14 RTS, I have the belt and sprocket in stock waiting...
Rattlebars
New member
Just a note. In all parts listings I have seen the 89 tooth sprocket has 5 spokes while the 79 tooth has only 3.
I'm curious. You are doing this for a reason. What are you trying to accomplish?
BRP built some F3 models with the 89 T rear sprockets as an easy way to increase the performance...Its like putting a lower gear ratio in a vehicle which increases acceleration and pulling power but limits top speed a little...Its a great benefit when riding two up and especially if your pulling a trailer...If you ride a lot of mountainous areas its also very nice benefit...Now if you ride where its all flat and very few hills the 79 T set up is more ideal...
The 89 T rear sprocket is a direct bolt on in place of the 79 T set up, and vice versa...You just need the correct belt...89 T belt is longer...
Steve at Monster F I was working with several people with RT's to get this working about 2 years ago but some type of glitch showed up with the shifting of the SE6 and never got it working correctly...
Got it. You are going for the "pulling power". Thanks.
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