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Ski-Doo: REV Sleds 2004.5-200, all models in the REV chassis
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  #1  
Old 02-07-2017, 12:46 PM
lancelarue lancelarue is offline
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Default Jackshafts

Anyone have experience with jackshaft flex problems in the Rev Summit chassis?
I was wondering if the jackshaft in the "X" models which is gun drilled chrome moly is worse than the solid shaft in the Adrenaline models? These shafts were the same in the 06' and the 07'.
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Old faithful :06' Summit X W/163" flex,2 wheels in rear, big drop & roll. 860R, 05' electronics, 46 mm Lectrons, custom airbox, lots of air, SLP single, Paragon, Mtn Tamer rear w/ floats all the away around,extra cooling tubes in tunnel, premix, 5 gal race tank, >

Trail sled: 07' 151" stock except 860 & paragon, other stuff
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  #2  
Old 02-28-2018, 07:40 PM
lancelarue lancelarue is offline
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Default Shaft flex

Quote:
Originally Posted by lancelarue View Post
Anyone have experience with jackshaft flex problems in the Rev Summit chassis?
I was wondering if the jackshaft in the "X" models which is gun drilled chrome moly is worse than the solid shaft in the Adrenaline models? These shafts were the same in the 06' and the 07'.
Thanks
I'm answering my own question!

So: FYI !!!!!
Thought I would try the C-3 belt drive again with some changes/stiffeners.
Same results except this time it doesn't bend the idler support bracket, under big torque I can see belt start to walk of to outside on top / jackshaft and it starts to eat on the flange @ side of idler wheel. Tried different spacing locations etc., doesn't matter. The harder I pull on it the further it goes.
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Old faithful :06' Summit X W/163" flex,2 wheels in rear, big drop & roll. 860R, 05' electronics, 46 mm Lectrons, custom airbox, lots of air, SLP single, Paragon, Mtn Tamer rear w/ floats all the away around,extra cooling tubes in tunnel, premix, 5 gal race tank, >

Trail sled: 07' 151" stock except 860 & paragon, other stuff
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  #3  
Old 03-01-2018, 08:04 PM
sledsrock sledsrock is offline
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What kind of power you suppose you’re putting to this shaft? I wonder how much flex my 880 is creating.
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  #4  
Old 03-02-2018, 12:04 PM
lancelarue lancelarue is offline
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Default drive train flex

Don't know what it's putting out. Haven't had it on the dyno yet. To be honest it really doesn't feel that impressive yet. Maybe a gallon of gas through new engine build. So still tight lot's of oil etc. This is an 860. Last year on the 880 had the same problems exactly only was having issues with the idler wheel support bracket. Fixed that so put belt drive back on thinking I was good to go. NOT!
Here's an easy test> better with two guys, on track stand ready to go, position where you can watch top gear with good light etc. Open it up and watch belt on top gear for side movement. Then do it again and make it pull against the brake real quick if you want to really load it up. You could also record it on your phone / camera and just replay to watch. I'm thinking this may be isolated to the rev chassis as without chain case cover on the top of the inner case / bearing area is pretty wimpy beings it's so far from support.
Took it all off, back to chain & gears. Hurts to do it as I really like the belt drive but I don't have time to build what it takes to fix it right now.
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Old faithful :06' Summit X W/163" flex,2 wheels in rear, big drop & roll. 860R, 05' electronics, 46 mm Lectrons, custom airbox, lots of air, SLP single, Paragon, Mtn Tamer rear w/ floats all the away around,extra cooling tubes in tunnel, premix, 5 gal race tank, >

Trail sled: 07' 151" stock except 860 & paragon, other stuff
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  #5  
Old 03-02-2018, 08:16 PM
sledsrock sledsrock is offline
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Hmmm. Me running chain still too BUT have the billet SPI case. Maybe I’m good with this case and cover.
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