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This is probably normal but since I know very little about the boosted sleds I thought I would ask. When I turn my key to on, most of the time I hear the supercharger whine up for about 8 seconds then whine down. What exactly is going on here. Is it simply a startup procedure?

What are the benefits of a coupled suspension vs non coupled? How does it work and when do you want the suspension to couple? I'm only a rider and never really gave much thought into how everything worked. When I look at a snowmobiles rear suspension, no matter the brand, I basically see the...

I came across a 27 pulley and found out it should get me to about 8lbs. I currently get about 5lbs and have quickly become bored with that. How much of a difference can you really expect by adding 3 pounds of boost? Is it a seat of the pants difference or simply a sled length or two in the...

The heaters on both grips worked well at start of day but part way into the ride the right grip went dead. there were no error codes. I use a Yamaheater so I checked all the connections and they seemed good. I measured the voltage at the connector from the Yamaheater to the grips which were...

Can someone explain how the twist or degree(70,80,90....) of the secondary spring effects the clutching? for example, how will my clutching be affected if I change my twist from 6,2=80 to 6,1=70? I cleaned my clutch over the summer and when I put it back together I had a helluva time getting...

Any reason to replace the Gems controller with a Power Commander V? I heard the PCV is easier to tune and provide more output.

I am hoping to run my supercharger at 11-12 psi on a Nytro with a head shim. Is the stock fuel pump capable or is an upgrade needed to provide the correct amount of fuel? I was told I might need an upgrade. Also, what gearing can I use to get to these numbers?

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Has anyone or knew anyone that has successfully rebuilt one? I found a web site that has the parts. https://www.superchargerrebuild.com.

Are there any changes necessary to the sprockets if I were to add a SC with about 8 lbs of boost?

I'm new to the SC scene and I'm trying to understand a little about how the pulleys work on the superchargers. For example the pulleys I have on my MPI kit are 28/28 and this produces x amount of psi. What pulley needs to be changed to lower boost so I can ride in lower elevation?

I am going to install a Push turbo-210hp to my Nytro this summer. I'm running Ulmers clutch kit. Anyone know what the setup is for this kit after I add the extra hp?

I noticed that a stud had pierced through the header this winter. It's not all the way through but did make a gash about 3 inches long. Is this a simple repair?

why does Star recommend a firmer spring in the center shock? How does this affect the handling? What can be done if the stock spring is left in?

When does the start of snowmobile season start?

How far up the rail should the marginal snow kit go? Any pictures?

Where are the numbers 1-2-3 located on the driven clutch for setting helix angle? I pulled the clutch apart to clean it up and thought it would be labeled a little better. Also, can someone explain the difference between a single vs dual angle helix? When is one preferred over the other.

What is the purpose of the rollers in a clutch kit? It looks like it is part of the primary clutch. does this have anything to do with the engagement speed? I only see new rollers in teh Schmidt Brothres kit and he is the only one I see that advertises a lower engagement speed. His stage 1...

I noticed excessive wear on the DuPont slides at the front right at the bend. They are good everywhere else but here but will still need to be replaced! Would installing a smaller wheel here help? will that small wheel be able to handle all the wear that it will be taking off of the slides...

Can a PCV used on an Apex also be used for the Nytro?