2019 Yamaha SX-R concept snocross sled

[cannondale27]

I strongly suggest at least adding these parts to any sled that is jumped or ridden hard through the 3ft+ stuff

 

[Brad389]

Yes these steel shafts are on the list for next year. The chassis seems to be showing signs on the 3 rivets on each side of the sled under the front part of the seat where the braces/ supports from the steering column come back and mount the the tunnel. Paint has chipped off and aluminum dust is appearing on my white painted tunnel. Over time these rivets will become loose so I am trying to avoid this from happening. Anybody have any ideas to help prevent this from happening?

 

[cannondale27]

Yes these steel shafts are on the list for next year. The chassis seems to be showing signs on the 3 rivets on each side of the sled under the front part of the seat where the braces/ supports from the steering column come back and mount the the tunnel. Paint has chipped off and aluminum dust is appearing on my white painted tunnel. Over time these rivets will become loose so I am trying to avoid this from happening. Anybody have any ideas to help prevent this from happening?

I am afraid you will eventually see that on almost all the rivets. When mine actually get loose enough to rattle I put new ones in with a washer backer where possible. Use the good ones from Yamaha or these Huck rivets are even better. That’s what those 3 are and even though the paint has gotten ugly around them mine haven’t loosened.

 

[Mileage Quest]

so this is a 600 or 700 2s???

 

[Brad389]

I am afraid you will eventually see that on almost all the rivets. When mine actually get loose enough to rattle I put new ones in with a washer backer where possible. Use the good ones from Yamaha or these Huck rivets are even better. That’s what those 3 are and even though the paint has gotten ugly around them mine haven’t loosened.
View attachment 139698

Thanks for your help but back on page 1 on the first post in the list of items that was added to this snowmobile it mentions front and rear tunnel reenforcements being added. I was hoping to get some feedback on these new parts. Like we’re they mount and what they look like and made of.

 

[cannondale27]

Thanks for your help but back on page 1 on the first post in the list of items that was added to this snowmobile it mentions front and rear tunnel reenforcements being added. I was hoping to get some feedback on these new parts. Like we’re they mount and what they look like and made of.

Those toeholds are one

 

[tapex_07]

We didn't mold them, they are from Yamaha

Are they just factory ordered plastics? Nothing special? Looks like a cool summer project if so.

 

[RSR_Performance]

Which Yamaha seat? Is it the mountain seat?

Its a MTX seat

 

[RSR_Performance]

Is 20/49 the gearing that AC uses on their race sled ?

Yes it is

 

[RSR_Performance]

What can you tell me about the tunnel reinforcements for the front and back? I have put stage 4 elkas on my sled and they rock but the chassis is starting to show signs of recent ware since thew addition of these shocks. Interesting project that you have started

Reinforced the sides (by the footwell), the rear of the tunnel and up front where the cross shaft bolts into the tunnel.

 

[RSR_Performance]

Are they just factory ordered plastics? Nothing special? Looks like a cool summer project if so.

They are a mix of a few different models betweek Cat and Yamaha. Then we fabricated them to fit on the sled

 

[RSR_Performance]

so this is a 600 or 700 2s???

its a 1049cc 4-stroke

 

[RSR_Performance]

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[RSR_Performance]

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[RSR_Performance]

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