Final Post of Concluding Notes
Again, thank you all for your advice.
Really, taking the secondary clutch apart is really not that big of deal. I spent more energy worrying about it than what it took to actually make the spring anchor point change.
I spend a great deal of time trying to remove the secondary clutch from the sled and could only move it about ¼”. Unfortunately, I think I’d still be working on it this morning right through the night so if someone has some good advice I’d like to hear it.
To move forward I grabbed some spring-loaded wood clamps (giant cloth pins) and used them to hold the secondary sheaves together on the snowmobile. While I was removing the three nuts I noticed the back plate wanting to push out, but you could easily hold it on the studs with one hand. Removed the plate, moved the spring one point forward towards the engine and turned positioned the back plate holes to the original studs to ensure the same amount of spring pre-load. Again, this is not that much tension so it can easily be done by hand.
The running test: While warming the machine up it felt like a lost a little low-end torque. However, as soon as you go into the throttle it improved back to being very snappy mid-range. Once to proper temperature I was able to use the throttle wide open. The tack peaked at about 8400 rpm and the speedometer showed 95 mph. I ran the test three times in a row with very similar results.
Just for kicks I removed the new belt and threw my old one back one. Doing this decreased the torque all the way through from bottom to mid-range, but otherwise felt very acceptable. Once again, I held the throttle wide open and the tack would peak near 8600 rpm and the speedometer showed about 85 mph of three runs. If you are solely out for performance a new belt would be well worth the money. However, I rarely do more than 80 mph on the trails so I couldn’t be happier even with my old belt.
The pulley markings: After adjusting the secondary spring I once again drew lines with a marker on the pulleys. When I was done testing the machine I could see only about a ¼” of the marker line left at the top of the primary clutch and about the same deep into the secondary.
Again, I couldn’t be more satisfied today as I can now use all of the horsepower. I’m sure there are more tweaks I could do for more, but having the entire throttle available once again is just fine with me. Thank you all again. RJ, I really appreciate your consistent advice and help.