Input please

[WillowAce]

Found another viper that will be coming home next weekend, a 2015 LTX LE that is bone stock with about 2k miles on it. My goal for this one is a bullet proof trail sleeper. There is a lot of knowledge here and would like a collaborative build so to say. I want the sled to appear and sound bone stock so staying away from headers and performance exhaust. No intention of taking on 800s, but want to beat anything else in 600 class and I believe that can be done with just increasing the efficiency of the HP already available. Any and all input is welcome as to how to accomplish this. Gearing, clutching, weight transfer, suspension are all on the table as well as other ideas. I'm going to take the skid apart and send the shocks to Cannondale as well as add Evol chambers to the floats on the skis to start. What else?

 

[cannondale27]

Run the rtx Le gearing and leave them for first 300ft. Bigger lug track too.

 

[Studroes144]

Found another viper that will be coming home next weekend, a 2015 LTX LE that is bone stock with about 2k miles on it. My goal for this one is a bullet proof trail sleeper. There is a lot of knowledge here and would like a collaborative build so to say. I want the sled to appear and sound bone stock so staying away from headers and performance exhaust. No intention of taking on 800s, but want to beat anything else in 600 class and I believe that can be done with just increasing the efficiency of the HP already available. Any and all input is welcome as to how to accomplish this. Gearing, clutching, weight transfer, suspension are all on the table as well as other ideas. I'm going to take the skid apart and send the shocks to Cannondale as well as add Evol chambers to the floats on the skis to start. What else?

You're definitely on the right track with sending the rear shocks out. U can add hp or improve efficiency, I like the "slippery" DuPont slides with a couple extra sets of wheels on the skid. Free air box mod adds some hp and throttle response. A good set of adjustable weights goes a long ways, everyone has their own personal preference on those..hard to beat a set of magnet style weights for easy adjusting. The smaller 14.5 mm rollers have seemed to really be a hit this year, they'll get the sled up and moving quicker as well as have added belt grip. I've found that my personal sled responds best to a wider belt that's still the stock 8jp length, the sled gets into motion quicker with that setup as the clutches don't have any extra belt slack to overcome vs what they do when a longer belt is used. The first year I had mine before I put the turbo on it always ran the quickest with lighter weights and more helix. I ran magnaforce weights with an opo primary spring, stock secondary spring and a 50/46 Dalton helix. It would light up fast and shift hard, it was very competitive against stock 800's in distances of 1000' or less, but I also was studded good for the occasion, if you don't have good traction whether it be studs or a deeper track then you'll always have a struggle. So I'd say make sure traction is how you want it, then tune your sled around that.

 

[Freighttrain]

Found another viper that will be coming home next weekend, a 2015 LTX LE that is bone stock with about 2k miles on it. My goal for this one is a bullet proof trail sleeper. There is a lot of knowledge here and would like a collaborative build so to say. I want the sled to appear and sound bone stock so staying away from headers and performance exhaust. No intention of taking on 800s, but want to beat anything else in 600 class and I believe that can be done with just increasing the efficiency of the HP already available. Any and all input is welcome as to how to accomplish this. Gearing, clutching, weight transfer, suspension are all on the table as well as other ideas. I'm going to take the skid apart and send the shocks to Cannondale as well as add Evol chambers to the floats on the skis to start. What else?

Thunder products heavy hitter for the viper call them I cant say enough my sled woke up and totally impressed with such dramatic improvement with just a clutch kit and a orange spring.
Running stock no mods pulls like a race horse and stood beside a turbo Cat and got him at the start and held until I let off the throttle. Walks on the wet snow and climbs awesome.
Just my 2 cents worth!
Cheers,

 

[WillowAce]

Bigger lug track too

My first thought was a 1.35 Cobra. 1.65 would give good traction but how much speed will it take away?

 

[WillowAce]

You're definitely on the right track with sending the rear shocks out.

My theory is control what you have first to establish your baseline. Plus, if it is going to take on the Rev and Rush chassis we're going to have to fins a way to make that thing turn relatively flat.

 

[WillowAce]

studs or a deeper track

How do you like the Studboys? Thinking 144 1.65s on a 1.35 lug track.

 

[Studroes144]

How do you like the Studboys? Thinking 144 1.65s on a 1.35 lug track.

Stud boy power points held up great. The last few years I've been using 1.63" woodys triggers on a 1.25" track and they're holding up great too.