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sykosledhead
Well-known member
Has anyone designed an engine base plate for the 08-10 800 yet? Was looking at doin one but wanted to see if its done yet.
syko
syko
Engine Base Plate?????????
- Thread starter sykosledhead
- Start date
FASTRAX has a nice looking plate. I broke a strap so I am considering a plate next fall as a replacement.
A sturdier base plate certainly wouldn't hurt, but I have a question that has just been bothering the heck out of me.
WHY DON'T SLEDS UTILIZE UPPER MOTOR MOUNTS?
Most motorcycles since probably before the 70's have done this. Look at the cradle designs of the modern sport bike or dirt bike. They have a much higher power to weight ratio and in addition, they transfer more power to the ground. Granted that is from a better transmission, but my point is how it is mounted and how you don't have to worry about chain alignment or anything silly like that. Superior chassis design along with upper and lower motor mounts my friends.
You just never hear of this type of issue in the motorcycle industry. Our sleds struggle to even get to 1000 miles. Yet a bike that turns 12,000 rpm and produces more HP than most cars doesn't even need a valve adjustment until 24,000miles. hmmm?
In the sled world we constantly battle motor torque, twisting and alignment. 4 rubber mounted straps seems like an idiotic design to me. Extending the mounting points away from the motor in reality probably even increases the flex and twist of the motor. We constantly add torque stops to try and minimize this. Sorry, I guess my point is that with all the technology out there I think the snowmobile world is sorta missing the boat on a key chassis design.
WHY DON'T SLEDS UTILIZE UPPER MOTOR MOUNTS?
Most motorcycles since probably before the 70's have done this. Look at the cradle designs of the modern sport bike or dirt bike. They have a much higher power to weight ratio and in addition, they transfer more power to the ground. Granted that is from a better transmission, but my point is how it is mounted and how you don't have to worry about chain alignment or anything silly like that. Superior chassis design along with upper and lower motor mounts my friends.
You just never hear of this type of issue in the motorcycle industry. Our sleds struggle to even get to 1000 miles. Yet a bike that turns 12,000 rpm and produces more HP than most cars doesn't even need a valve adjustment until 24,000miles. hmmm?
In the sled world we constantly battle motor torque, twisting and alignment. 4 rubber mounted straps seems like an idiotic design to me. Extending the mounting points away from the motor in reality probably even increases the flex and twist of the motor. We constantly add torque stops to try and minimize this. Sorry, I guess my point is that with all the technology out there I think the snowmobile world is sorta missing the boat on a key chassis design.
^ Couldn't agree more. Seems kinda silly especially now that most newer sleds have some sort of structure over the motor. I broke the bolt on the PTO side and it allowed the motor to flex enough to break the strap on the magside.
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sykosledhead
Well-known member
We are all on the same thinkin. I have a turbo that is down and getting rebuilt. I need something to stiffen up the flex. So I think I'll build one next week and see how it works. I feel the case and crank are way too weak and that is a big part of the problem with the 800 twins. I was also told at Jackson Polaris has a contract to carry that same motor for 3 more years so the problem won't be fixed soon. i looked at Fastrax's plate and it is way more than what I'm thinking. I like the design but you would need to redo motor mounts and get kinda crazy with it. I'm looking for something like the older one that sandwiches between the brakets and the motor. I also had some ideas on upper motor mounts like you had mentioned Fullmonte. I beleive we are on the right track. I'll post some pic when I'm done.
syko
syko
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