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 Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?)

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Papa Shaun
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PostSubject: Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?)   Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?) Icon_minitimeSun Nov 13, 2016 9:47 am

I"ve got a 2002 Troy Bilt Lawn Tractor, that features the vari drive system, but is also a pedal drive. From what I understand, swapping the Transmission Pulley to a smaller size, will not help in speeding up the mower, due to the fact that the variable speed pulley controls the mower speed, and the transmission pulley is primarily used for forward/reverse. This thing has a crazy belt size, the upper drive belt on the transmission pulley is like 5/8" x 41.5".....while the lower drive belt is like 5/8" x 90.5." I"ll include a link at the bottom showing how tension on the lower belt is what primarily drives the mower.....My question....... would doing an engine pulley swap really help in speeding up the mower any at all, without trying to modify the trans anyway? Reason I ask, I'm hesitant about trying to mess with this variable speed pulley in any form, since a replacement is like $100 everywhere I look. In addition, changing belt sizes worries me, since the variable speed pulley is basically a double pulley in a sense. I appreciate any help, and I'm not looking to really change the trans at this time. Here is a link I found on Youtube showing how this system operates, thanks:

https://www.youtube.com/watch?v=KFar2Ez10Wk
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Doug
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PostSubject: Re: Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?)   Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?) Icon_minitimeSun Nov 13, 2016 10:19 am

You can swap either the engine or trans pulley. Chances are the trans is splined, but you can grind a flat onto it and using a steel pulley with a long set screw get it to work.

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MatthewD
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PostSubject: Re: Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?)   Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?) Icon_minitimeSun Nov 13, 2016 11:55 am

You can change either. The front may be easier though, just buy a V belt pulley with a 1" bore of whatever size, depending on what speed you want. Remember,
Engine Pulley (Driver) - Bigger = Faster
Transaxle Pulley (Driven) - Smaller = Faster

Hope this helps! Smile
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Papa Shaun
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PostSubject: Re: Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?)   Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?) Icon_minitimeSun Nov 13, 2016 2:47 pm

Thanks for the help guys!! I'll leave the trans pulley alone for now, and give the engine swap a try.
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MatthewD
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PostSubject: Re: Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?)   Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?) Icon_minitimeSun Nov 13, 2016 3:39 pm

Good luck! If you have any more questions be sure to ask!
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PostSubject: Re: Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?)   Troy Bilt with Pedal Drive/Vari Drive Setup (Best Way to Speed Up?) Icon_minitime

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