RM250 platform for Snowbike?

[ProAlpine]

My heavily modded 03 Rm250 had a hell of a time with a slipping clutch. I actually wondered when you said you were going to use a Rm250 how the clutch would do. When I used to race that thing until I managed my clutch issues I would burn through at least a couple of clutches a season.
I see you already got a new basket. Another key if you can still find one is to get a hinson pressure plate. The stock one flexes. You can also drill some oiling holes on a new oem inner hub, if you don't want to fork out or can't find a hinson one.
Clutch plates are key, you say you got oem. I never ran them but as far as aftermarket goes the only ones that worked for me were wiseco.
Springs you can go aftermarket stiff or you could add some preload with some washers.
Run ATF type F for good clutch grab.
Power valves on a RM always puke goo so just route your lines accordingly. Moisture makes it look extra ugly.
Pretty easy to just pull the head and see what is going on in there. Do you know how to use solder to measure squish band?

I ordered new friction plates and pressure plate yesterday. The discolored oil is full of flecks from the clutch. I could only find one Hinson pressure plate on the entire web. It was in the UK and they wanted $286 for it without shipping. I couldn't justify it. So I ordered Wiseco instead for $55. The Wisecos are cast, not billet, but they are hard anodized. I figured it's got to be better than the old stock one. The friction plates I ordered are Wisecos as well. It's getting damn hard to find parts for these RMs. Kind of a pain in the ass. Wish it were as easy as a YZ!

My buddy has a foundry in town and has a CNC machine. He said he'd help me make a mount to fit the ARO Traverse ski to the Moto Trax spindle. It should be a pretty straight forward build.

I'm hoping to get this thing up and running before the season's over! :0

 

[tribalbc]

I ordered new friction plates and pressure plate yesterday. The discolored oil is full of flecks from the clutch. I could only find one Hinson pressure plate on the entire web. It was in the UK and they wanted $286 for it without shipping. I couldn't justify it. So I ordered Wiseco instead for $55. The Wisecos are cast, not billet, but they are hard anodized. I figured it's got to be better than the old stock one. The friction plates I ordered are Wisecos as well. It's getting damn hard to find parts for these RMs. Kind of a pain in the ass. Wish it were as easy as a YZ!

My buddy has a foundry in town and has a CNC machine. He said he'd help me make a mount to fit the ARO Traverse ski to the Moto Trax spindle. It should be a pretty straight forward build.

I'm hoping to get this thing up and running before the season's over! :0

Yeah that's pretty pricey I think I paid$100 US for mine. I'm sure the wiseco should be an improvement, it's all about being stiffer. Those wiseco plates are the best I have found on the RM. I have another fresh set waiting in the shop for the next change out.
I would think about adding washers to your springs for preload. Spark plug washers work well.