In the last month there have been lots of questions about correct rear suspension sag on the Raw RMK chassis. How to check it and going to stiffer torsion springs. Here's what I found this past week:
1. The .405 77 degree optional springs don't work on the Raw RMK. The coil is too wide so when installed it drags on the upper wheel, not allowing it to spin freely. If anyone has made these springs work, please pm me, because I called a well known Polaris dealer and I was told, "no the .405's don't work on the Raw RMK's, that's why they are not listed on the microfiche as an option."
2. This same dealership told me that the air shocks on the front are causing incorrect sag readings. The air shocks keep the nose high while sitting on the ground, thus causing the rear of the sled to sit lower. I have not been able to try this, but here's their recommendation: When checking sag add a third person to push down on the nose of the sled about 2-3" and now check how much sag. Again if someone could try this and let us know.
I'm 230 w/gear and he felt I was right on the border for needing the stiffer (.375 77 degree springs) and will work on the raw.
Just my info from what I've found,
Kale
1. The .405 77 degree optional springs don't work on the Raw RMK. The coil is too wide so when installed it drags on the upper wheel, not allowing it to spin freely. If anyone has made these springs work, please pm me, because I called a well known Polaris dealer and I was told, "no the .405's don't work on the Raw RMK's, that's why they are not listed on the microfiche as an option."
2. This same dealership told me that the air shocks on the front are causing incorrect sag readings. The air shocks keep the nose high while sitting on the ground, thus causing the rear of the sled to sit lower. I have not been able to try this, but here's their recommendation: When checking sag add a third person to push down on the nose of the sled about 2-3" and now check how much sag. Again if someone could try this and let us know.
I'm 230 w/gear and he felt I was right on the border for needing the stiffer (.375 77 degree springs) and will work on the raw.
Just my info from what I've found,
Kale