Theoretical Max. MPH

[SRX Boy]

I’m playing with the Sledzilla gearing app which allows you to play with the variables that produce theoretical max speed. Can someone help me with a couple of the key inputs for the 137” Sidewinder??

Max tech RPM: think that is 8900
Num of drive teeth: ??
Clutch gear reduction: think this is 1.0 for Sidewinder??
Clutch Ratio: not sure?? - app says for non-overdrive use 1.0 for overdrive yamaha use .9
Top sprocket: think stock is 21
Bottom sprocket: ??
Track pitch: 2.52

 

[sledding rocks]

I’m playing with the Sledzilla gearing app which allows you to play with the variables that produce theoretical max speed. Can someone help me with a couple of the key inputs for the 137” Sidewinder??

Max tech RPM: think that is 8900
Num of drive teeth: ??
Clutch gear reduction: think this is 1.0 for Sidewinder??
Clutch Ratio: not sure?? - app says for non-overdrive use 1.0 for overdrive yamaha use .9
Top sprocket: think stock is 21
Bottom sprocket: ??
Track pitch: 2.52

9 tooth
.95 clutch ratio
bottom 41
track pitch 2.86

 

[SRX Boy]

Thanks

 

[Dieselxtx]

My cousins BTX LE went 118mph witb 24/50 gearing that’s 17% overdrive!

 

[Byam]

Od "real world". .93
120mph gps is pretty much the top it can go "stock"

 

[Dieselxtx]

Yes that was on max 17 TD tune and with 21/41 gears 122mph and it’s had more in it

 

[Byam]

Stock sheave?

 

[Dieselxtx]

Yup stock clutches no machining idk how it’s possible but it does it my btx is a few mph slower both sleds the belts bottoms out and rubs the secondary

 

[ROCKERDAN]

126gps has been posted before.....21/41, Obviously need the HP and conditions to get it there too.

22 top gear can tap over 130gps.

Dan