MDS weights--Do they work?
- Thread starter M-Head
- Start date
N
newtrout
Well-known member
I'm running them in a 2010 M8 162. Stock except for a Skinz can. So far I'm very happy with them. We haven't had any deep, challenging conditions recently, but I'll tell you my experience so far. Most of my testing with these has been in snow where you would sink to knee depth, but could make a snowball. Read: Washington March-April type powder.
I was originally running 70g cat weights with a cat yellow/white primary spring. Stock secondary except for a shift assist bearing. Engagement was a hair under 4000 and it ran decent except for belt slippage at low rpm (crawling in the trees) and some heat on long, wide open pulls. Ran 8100-8300 rpm, depending on snow. I could get track speed down to 40 when really, really pushed (steep, deep, slow, etc.).
I started with ~77 or 78 grams in the MDS weights, per Steve's recommendation. Same yellow/white primary spring. No changes to the secondary. Engagement was up to 4300+ rpm. Stronger pull from 20-60 mph, and still some heat on wide open pulls. RPM was spot on between 8100-8200.
Switched to the D&D white spring and added 1 gram to the weight tip. Now engagement is nice and smooth, a bit under 4000 rpm. Even stronger pull from 20-60 mph. Great backshift. In deep heavy snow, I could let off the throttle mid-climb while barely moving, punch it and hit 8150 every time. Zero rpm loss when climbing. RPM was typically from 8150-8300, depending on snow conditions. Less belt slippage crawling in the trees. Less heat on a long, wide open pull.
I have yet to get some good deep pow for testing. Climbing the steepest hills I could find in heavy snow, leaving an 18" trench, I saw track speed from 43-48 mph.
On the hardpack in a rolling start drag race with a well setup 2009 M8 162 w/ SLP pipe, we were dead even (in case anyone really cares how your mtn sled does in a drag race....).
Last edited:
There are two allen head bolts, you have a choice of short or long bolts and can add washers if needed. MDS will set you up with the right weight and adjustability. He told me to adjust on the hill he has a long snap on T handle allen wrench with wobble end and then can adjust on the hill. also recommends carrying some locktite to make sure they dont come out.
The wrench cost me $6, still waiting for my crank so I can test them.
N
newtrout
Well-known member
I run from 3000 to 7000 feet. Most of that info applies to ~6000 feet.
With the M8, Steve recommends that you only add weight to the front hole. The largest pan-head bolt and two washers would be approximately 6g. So, for the M8, you would have ~6g of adjustability.
N
newtrout
Well-known member
It's rated at 130-335, but when compared to Cat springs I would say it's like a 110-300. Softer engagement, but holds rpms well on top.
Two more posts and I won't be able to read this thread any more. Gotta love their new plan.....
N
newtrout
Well-known member
Stock secondary, except for the shift assist.
910
YES 2010 M8 with can the c-1s steve set them up I puttem in best money spent would recomend to anyone looking for a better way to add REAL performance . Cool thing is steve answers his phone & follows up on stuff that doesn't have anything to do with his weights. call him
YES 2010 M8 with can the c-1s steve set them up I puttem in best money spent would recomend to anyone looking for a better way to add REAL performance . Cool thing is steve answers his phone & follows up on stuff that doesn't have anything to do with his weights. call him
