Not enough RPM — what to do?

[HannaB]

Not enough RPM — what to do?

Hi, how do I improve the RPMs on my sled? I only get about 7,800 RPM under load (climbing) and it's just not enough to keep me out of trouble. My sled is a '10 M8 SnoPro 153" with an aftermarket can. It was set up by Mountain Magic before delivery and since they're out of business now, I can't call and ask... Sled has about 500 miles on it.

I changed to a pink/blue spring and gained about 100 RPMs but that's not enough. I get almost 8,000-8,100 RPM on flat ground, but it faints going uphill in powder.

Any ideas?

Thanks,
Hanna in Tahoe

 

[GlennRMK]

What weights are you running and what elevation are you riding?

70s?

68s?

I would take some weight out of the primary.

 

[Ski-Laxn]

MDS Weights

 

[dmkhnr]

Shave 1 gram off the weights so they are 67#, and put an slp blue/pink spring in the primary.
This setup works great for our area!

 

[Destroyer]

Shave 1 gram off the weights so they are 67#, and put an slp blue/pink spring in the primary.
This setup works great for our area!

What is your technique for shaving weights?

 

[GlennRMK]

I usually just shave the side of the weight (where the part #s are) with a dremel. This should maintain the same profile and shift.

Anyone notice that the 2011 uses the yellow/white primary?

How does that compare in length to the SLP blue/pink?

 

[Dam Dave]

It was set up by Mountain Magic before delivery and since they're out of business now, I can't call and ask...
Any ideas?

Thanks,
Hanna in Tahoe

this Mountain Magic

http://www.mountainmagicsports.com/

http://www.snowestonline.com/forum/showthread.php?t=221874

.

 

[dunatyk]

Mountain Magic is still in buisness. 1-208-852-0400