manual engaging pulley clutch

[AlphaRunner85]

do you think a driven pulley from a torque converter would work in this setup? possibly
provide a little variance in the gear ratio as speed increases?

 

[Raywelder]

do you think a driven pulley from a torque converter would work in this setup? possibly
provide a little variance in the gear ratio as speed increases?

Sounds possible, you wouldnt even need a lever, or pedal control for it, just spring loaded.

 

[Raywelder]

Been pondering this idea, You could use a spring loaded idler, but it would need to have a stop to keep the belt slightly loose at idle. Then it when engages it would pull against the Idler, and the higher the engine revs, the more the clutch squeezes and changes ratios..

 

[AlphaRunner85]

and final thought, would it be possible to stack a pair for the drive and driven for multiple gearings. the shift system would be tough but the shaft on my gx390 seems long enough given the drive pulleys arnt too wide

 

[AlphaRunner85]

and the higher the engine revs, the more the clutch squeezes and changes ratios..

i was thinkin driven cuz they are a little less expensive.

 

[BriggsTwins]

why not keep a lower speed ratio on the input of the trans....use the output to put a big sprocket on leading to less wear on the transmission.
make the trans input around 2:1 or slower and use a 40 tooth on the output down to what ever size sprocket on the axle

 

[AlphaRunner85]

so maybe a 2" drive and 4" driven to a 40t sprocket to a 60t final drive sprocket
if my math is right thats like 3:1 ratio... and with 13hp this should be fun.

 

[BriggsTwins]

that sounds about right alpha, the big issue is that people dont look at changing the output, but rather the imput making the trans run at higher than manufactured speed, but if it is close and the output is modified there wll be less wear, and thus more flexible.

 

[AlphaRunner85]

so maybe a 2" drive and 4" driven to a 40t sprocket to a 60t final drive sprocket
if my math is right thats like 3:1 ratio... and with 13hp this should be fun.