towing a sleigh with the 04 rx1

[rx1 man 04]

I like to go ice fishing a couple times a year, I totally rebuilt a 1970 cat cutter and tow it behind my sled. I have only used it twice but the machine needs more torque when towing. Anyone have any simple suggestions on how to make this set up work a little better without getting into changing sprockets and gears. maybe a helix change would work if anyone has any ideas,

 

[jd0270]

I would say throw an OSO primary spring in it.

 

[rx1 man 04]

oso spring

would you happen to know the yamaha part number,

 

[jd0270]

90501-624l8

 

[maim]

x2 on clutching. i know mine hauls much better with ulmers set-up that it did stock.