I didn't know this thread was about Cats.
OT
The New QRS secondary performs differnt that the older ski-doo secondarys also.
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I didn't know this thread was about Cats.
OT
The New QRS secondary performs differnt that the older ski-doo secondarys also.
The only major differance is the skidoo weren't using a roller secondays back in the old days. Doo tried and failed tried and failed....the name of the game still remains keeping the belt sqweezed and the primary heat to a minumim in deep powder. How you get there is up to you.
The secondary always stays cool. LOL
OT
I still don't see the need for the reverse helix. If you are climbing and need 44* at climbing speeds, why have a slower shifting sleds off the bottom (lower number)? I guess i see the point of the finish increasing if you want to try and pull 100 mph on the trail, but these are mountain sleds and we climb with them. Last time i checked, this is snoWEST. Not snoEAST. Show me a reverse angle helix that rips off the bottom as well as a progressive and keeps belt temps down will climbing hard and i'll believe you. At least in WA with our heavier snow, the reverse angled helix's are crap.
Now here a wealth of info from a cat riderwe all need to listen to so we can tune our doo's---i have ridden about 17000 miles at 7500 to 10500 feet in 10 years and have a idea what i need for my sled--go find a stock 2008 m8 and bring it to wyoming and we'll show you how a stock 2008 154 x runs with the 09 clutching
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LOL T/A - kind of a sarcasitc response from you! And why does it matter what kind of sled i ride? I have a decent understanding of clutching, and i ride with 4 XPs every weekend. So far i'm watching my buds 08 XP with just different ramps and adjusted pin weight (stock everything else) consistantly outperform XP 09 clutching everywhere (but the trail!!!). Hmmmm. That's with the 09s clicked to run 8200 rpms too. So tell me again - why would you want low numbers at the beginning of the shift on the helix? it makes no sense to me.
As for the stock 08 M8 compared to stock 09 XP (the only difference is the clutching really on 08 vs -09 XPs) - not really that fair. If it were stock 09 M8 vs the stock 09 XP i'd take the bait. They are quite close actually.
Don't take it wrong either - i think you have a lot of info to give in the forum, but why does it matter if you ridden 17000 miles or not? I was respectfully saying i don't think reverse helix's work well in the mountains. If we always agree with each other on here, nobody would ever learn anything and we'd all be running the trail clutching these sleds come with from the factory.
Must have something to do with the tra/qrs? I talked to the famous turboal again today and he still says to use the helix from a summit 600 and the 160/320 primary spring. He rides , he rides lots and he lives and rides where i ride. What can i say............
Must have something to do with the tra/qrs? I talked to the famous turboal again today and he still says to use the helix from a summit 600 and the 160/320 primary spring. He rides , he rides lots and he lives and rides where i ride. What can i say............
Im way ahead of you... i have 55 miles on a doo. I admit to knowing diddly about the tra.... so far. I do know that al rides a ton and the best riding in the planet is 20 mins from his door. I figure ill try it out. Oh i think the 600 helix is 38/42 or so. sj
A good friend of mine just did some testing in the Black Hills at 6000 ft with his new 600 ETEC Summit and is very impressed with the doo clutching/reverse helix/ and gearing.
It has 41/45 helix with stock 19/49 gears and he said it pulls hard all the way to 80 mph where it stops. He said appears to take belt all the way to the top of the primary and both clutches are cold. Bottom end acceleration very strong because of the low gearing.
His other sled is a longtracked piped 08 TNT with the Shockwave on it and 21/45 gearing. It would accelerate hard to 60 and then creep up in speed. He's thinking maybe the doo arms or the multi angle primary clutch sheave faces stall the upshift and the backward helix may bandaid this.
Good Luck
I posted the helix for the 09 600ETEC Summit a while back
He talked to Goodwin the next day about the 500SS TNT and his thoughts were that it was geared to high and sec ran into a wall and quit load sensing from the track. He thought the 600ETEC would keep accelerating and pull belt all the way to top of the primary because of low gearing and reverse helix.