Edge rmk carls 910 clutching help

[mbigbore9]

Hello, looking for some help/info with clutching on my 02 edge rmk with a Carl's 910 in it. It's tough to test and tune it because I only out in togwotee for 4 days once a year so any info will be greatly appreciated. I used the clutching specs from Carl's. Here's all my set up, primary 10-60s almond spring secondary tss 04 black spring 64-40.46 helix. My gearing is 42-20 with 8 tooth drivers and 162 2.5 track. I'm riding 8k-12k in tog. My problem is sometimes it will bog on a climb in the deep about halfway up and always seems to pull slowly up to top rpms on the trails around there. I can only pull 7700-8000. Any thoughts would be greatly appreciated.

 

[mbigbore9]

Any thoughts guys? I was thinking of going stiffer on the driven spring.

 

[sled_guy]

I prefer the SLP Blue/Pink spring in mine. I run the TSS-98 clutch on mine. I couldn't pull the RPM with the Carl's recommended helix so I run a 60/38 .46 and run the SLP shim so it is a .40. I also run the black/red driven spring which I think is the same as the black now? Not sure on that.

But you might be chasing the wrong thing on the bog on a big climb... the 910 builds big heat and wants lots of air. Mine would bog in over the hood powder or on long climbs and I finally put a bunch more venting in it on the hood to get it to pull more air. I have replaced both 4" gauges with flow rites and have 2 additional small ones installed in the hood.

sled_guy

 

[mbigbore9]

Thanks alot for the info! Unfortunately I'm pretty sure I lost a con rod bearing on the PTO side on my last ride so I have to figure out that problem now. Thanks again appreciate it.
mbigbore9

 

[Clarke673]

your geared pretty tall, although efficient, id suspect your top end trail speed to be well over 80 MPH. tss-04 is all I run between cat short track sno pro sx to old Yamaha triple srx mountain to pro/axys mod turbo sleds. They (tss-04) seems to always work better gearing to a lower set (higher final drive ratio) With your elevation and conditions id think a slight gear down and a higher rpm enguagement on your primary spring would together wake the sled up a lot. hope to hear its back on the snow for next season!