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The ski Doo arms #967 and #965 one comes on the 2018 and one comes on the 2017. Can anyone tell me the difference in performance of the two arms?
P-drive clutch arm question
- Thread starter Skidoo bachelor
- Start date
The 18 is around 3-4 grams heavier than the 17. Other than that the same profile.
P drive ramps
Get a hold of John at Sledhead racing,he will fix your p-drive clutch .His kit works.
Get a hold of John at Sledhead racing,he will fix your p-drive clutch .His kit works.
F
For myself I have just completed my Breakin and now have added 2.5 extra grams in shims on each pivot bolt for each pivot arm over the stock 2018 arms..
Motor is completely stock and had to also increase secondary spring pressure to a black/157/303 to prevent belt slip in secondary.. I also went from the stock 40 helix and jumped too a 47 degree and sled has been a bullet compared to before the changes, I had the same other xm sled to compare with before and after changes..
This change will give a much quicker acceration with cooler belt changes, I did not touch gearing..
Motor is completely stock and had to also increase secondary spring pressure to a black/157/303 to prevent belt slip in secondary.. I also went from the stock 40 helix and jumped too a 47 degree and sled has been a bullet compared to before the changes, I had the same other xm sled to compare with before and after changes..
This change will give a much quicker acceration with cooler belt changes, I did not touch gearing..
967 44 gr with a 4 gr tip
965 46 gr with a 5 gr tip
def a better ramp (967 is useless)...
SHR 967A gives you 45-5 empty up to 54-10 loaded...
with a lower eng pdrive spring and stiffer secondary you lose clutch heat and gain track HP-BJ
965 46 gr with a 5 gr tip
def a better ramp (967 is useless)...
SHR 967A gives you 45-5 empty up to 54-10 loaded...
with a lower eng pdrive spring and stiffer secondary you lose clutch heat and gain track HP-BJ
S
I have the shr weights fully loaded 6 gram set screw and as much weight on bolt that will fit with silber turbo still over revd at 5500 feet. Going to try the zollinger 95 gram turbo arms next.
Why not move to a primary spring with a lower finish?
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Are you running the silber helix?
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Yes the 2018 silber kit primary spring, secondary spring and helix, 2018 was able to get it to run good at three pounds, overrevs at 7 lbs with all the weight I can get on it
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I asked silber about gearing or a different spring and they said get a longer bolt and put more weight on it? Not sure what is the best thing to do?
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It's that piece of crap pdrive clutch.. Crazy you can get enough to weight on the arms..
See why guys Are swaping to p85, wish we could get the old tra to work on it as well.. Save so much stress and $$
See why guys Are swaping to p85, wish we could get the old tra to work on it as well.. Save so much stress and $$
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What's p85
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Silber guy said he got enough weight on there to run 14 psi not sure elevation but I just can seem to get it to lower rpm
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Few sled shops up north had pushed the p85 Polaris primary on the doo 850t.. I had seen one run a few weeks back with it and it was very clean with a fairy amount of miles trouble free..also 4 lbs lighter
Not really excited about putting this Sibler kit on yet till we have a better primary or better parts for it.. I hear so many hazels with this primary
Not really excited about putting this Sibler kit on yet till we have a better primary or better parts for it.. I hear so many hazels with this primary
Other than tuning whats the problem with the the pdrive? The p 85's arn't trouble free by any means, but the new pdrive is well built and will last longer. I happen to like it.
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SHR Arms
I think Big John has tungsten slugs you can drop into weights and then use the smaller allen set screws to hold it in, BRP also has tungsten washers too for pivot weight.....
I think Big John has tungsten slugs you can drop into weights and then use the smaller allen set screws to hold it in, BRP also has tungsten washers too for pivot weight.....
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TRA7
Actually entertaining this idea as we speak.....
Had to counter bore just a little more to clear "D" index in 850 crank snout but it torques down onto crank.....
Dynomo Joes clutching in TRA......:face-icon-small-win
Actually entertaining this idea as we speak.....
Had to counter bore just a little more to clear "D" index in 850 crank snout but it torques down onto crank.....
Dynomo Joes clutching in TRA......:face-icon-small-win
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Ya tuning is a pretty big part of clutching.. Like the previous problems above, older tra was proven with minimal service.. Easily handle 250hp, now we lost that..
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I have a tra race clutch to send to you the day you get this figured out..
The sun is shineing brightly today..
The sun is shineing brightly today..
I have tungsten to add weight...
clicker 2 is an option...
what pdrive spring?
you can call for help...
-BJ
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