First several rides on the new Pro were great! Then? I started loosing RPM's? Broke a few drive springs ( after market as well ) Tryed polaris 10-60 weights Tried black/white in secondary.? Sled hits 8300 rpm's at low elevation, 7800 around 8500' and 7300 rpm's at 10,000. I think I have some issues, but my dealer says everything checks out fine. Last question, slide bussing on secondary clutch seems loose, dealer says normal? How much play should their be? The 2 other prormk's I ride with are still stock (cause we are waiting for boost) and their sleds hold rpm's and run great. What can I do? Where do I go from here? Maybe I need a new dealer?
Pro Rmk 800 163" Clutching help
- Thread starter prosam800
- Start date
Compression
How much compression should my Pro800RMK 163 Have? I have 114psi @ 5000' elevation. That seems low to me, but it has been that way since I checked it after the second ride?
How much compression should my Pro800RMK 163 Have? I have 114psi @ 5000' elevation. That seems low to me, but it has been that way since I checked it after the second ride?
C
clutch man
Well-known member
T
towngrunt
Well-known member
Had a buddy with a 09 Dragon and had RPM issues all checked out ok as well. Just so happens the Factory boys were in their shop at the time and told them to replace the solenoid that controls the exhaust valves. Once this was done it pulled and held the R's. It appears that the meters say it is ok but are finding out that some may check good but really are not.
Thanks
Ill try that. Anything is worth a shot at this point. Thanks.
Ill try that. Anything is worth a shot at this point. Thanks.
helix
Yes my helix is stock. I tried a slightly more shallow helix but I saw no results.
Yes my helix is stock. I tried a slightly more shallow helix but I saw no results.
area
The area we ride is steeeep and deep, and very high in elevation. 8-11,000' . The softer the snow the better my rpm's get. Either way it will not hold 8150 like it did the first 4-5 rides? I do not seem to be getting a lot of belt heat unless I use the black/white spring in my secondary. I was wondering if others have noticed a drastic change in rpm's around 9-9500'. This is where I notice the biggest change. I wonder if my computer is not adjusting enough to compensate for elevation? At 8000' it seems to run quite well? Currently I am running 10-60 weights with stock black spring. Secondary is stock with 3 plastic shims.
The area we ride is steeeep and deep, and very high in elevation. 8-11,000' . The softer the snow the better my rpm's get. Either way it will not hold 8150 like it did the first 4-5 rides? I do not seem to be getting a lot of belt heat unless I use the black/white spring in my secondary. I was wondering if others have noticed a drastic change in rpm's around 9-9500'. This is where I notice the biggest change. I wonder if my computer is not adjusting enough to compensate for elevation? At 8000' it seems to run quite well? Currently I am running 10-60 weights with stock black spring. Secondary is stock with 3 plastic shims.
pro rmk clutching
i also have a pro 163 and i am having the same issues i put in carls clutching and still the same results, can get 8200 down at 6000 ft but wont even come close at 10000 ft on a climb im down to 7800 rpms will jump up to 8000 from low throttle to full but slowly drop off i have had drop clear to 7400 i have tried all different setups lighter weights and stiffer springs still wont tack looses it pull, feels like it runs good just wont pull rpm at elevation i have a couple friends with the same set up and they run 8200 8300 rpm they have 155 track but i dont think thats should make that much difference. let me know what you figure out to fix it and ill do the same
i also have a pro 163 and i am having the same issues i put in carls clutching and still the same results, can get 8200 down at 6000 ft but wont even come close at 10000 ft on a climb im down to 7800 rpms will jump up to 8000 from low throttle to full but slowly drop off i have had drop clear to 7400 i have tried all different setups lighter weights and stiffer springs still wont tack looses it pull, feels like it runs good just wont pull rpm at elevation i have a couple friends with the same set up and they run 8200 8300 rpm they have 155 track but i dont think thats should make that much difference. let me know what you figure out to fix it and ill do the same
exactly
That is almost exactly what mine does as well, I have seen a drop to 7300, sometime it will work its way back to 7700 on a long pull? sometimes it stays around 7300-7400, it is not predictable. I hope somone on here has a solution. It used to run good I don't know what changed?
That is almost exactly what mine does as well, I have seen a drop to 7300, sometime it will work its way back to 7700 on a long pull? sometimes it stays around 7300-7400, it is not predictable. I hope somone on here has a solution. It used to run good I don't know what changed?
others
WoW, sounds like some orhers are experiencing the same issues as am I. I recieved a few IM's with oters having the same issues. I hope someone has an answer, or has fixed their sled after theese issues? How many more of you are out their? Also how many of you are breaking drive springs? I am on my 4th one now? Any dealers out their seen this issue?
I hate to do mods to cover up a problem.
WoW, sounds like some orhers are experiencing the same issues as am I. I recieved a few IM's with oters having the same issues. I hope someone has an answer, or has fixed their sled after theese issues? How many more of you are out their? Also how many of you are breaking drive springs? I am on my 4th one now? Any dealers out their seen this issue?
I hate to do mods to cover up a problem.
Probably not clutching related. I would verify motor mounts are good and crank runout is good....for starters. I believe there was an issue with motor mount bolts breaking?? Just a thought-
Depending on your weight, 58-61grams
mine is set 60.5's
my buddy's wht over 205lbs 59.5grams
both pulling 8250@ 8000'-12000'
mine pulled 8450 on the rode a 91mph on the trail in gould,CO
163" are tricky.Alot of grip in that track.
At 3000" here in sweden we run 19/43 or 19/45 gearing
With the TEAM TIED at SLP specs for Pro.(Or tss 04 with 160/240)
With the lower gearing you need to run a litlle stiffer sec. spring.
Then just tune the slp MTX to your Elevation.
Perfect rpms overall with low clutch temps even without vents.
Runs like a champ!!
At 3000" here in sweden we run 19/43 or 19/45 gearing
With the TEAM TIED at SLP specs for Pro.(Or tss 04 with 160/240)
With the lower gearing you need to run a litlle stiffer sec. spring.
Then just tune the slp MTX to your Elevation.
Perfect rpms overall with low clutch temps even without vents.
Runs like a champ!!
T
trestlecreek
Well-known member
Primary springs breaking sounds like there is an underlying culprit. I think I would verify all motor mounts are good. Buddys sled has a vibration, I asked Dan Adams at the pro-ride a couple of weeks ago if he's heard of any problems. He said yes some motor mount issues, so double check those. (Some of the mounts were pressed too far/recessed, some sit flush. Compare to your buddy's sleds)
You mention you ride with a couple of pro's, try swapping clutches to see if the problem follows the clutch.
The high tech sleds today compensate for everything, altitude, temprerature, fuel...the arctic cats had an issue where the vent tube that sent barometric pressure to the ecu to compensate for altitude would get kinked, simple fix was to make sure the hose wasn't kinked behind the ecu connection.
Just a thought, also check the primary spider for cracks. If you've done any shimming and took off the spider they need to be torqed back on with a 5 foot cheater bar!!!
Odd it ran ok the first rides out,... backtrack and reverse any changes made perhaps?
Just some ideas...
Good luck
You mention you ride with a couple of pro's, try swapping clutches to see if the problem follows the clutch.
The high tech sleds today compensate for everything, altitude, temprerature, fuel...the arctic cats had an issue where the vent tube that sent barometric pressure to the ecu to compensate for altitude would get kinked, simple fix was to make sure the hose wasn't kinked behind the ecu connection.
Just a thought, also check the primary spider for cracks. If you've done any shimming and took off the spider they need to be torqed back on with a 5 foot cheater bar!!!
Odd it ran ok the first rides out,... backtrack and reverse any changes made perhaps?
Just some ideas...
Good luck
A
aebsledder
Well-known member
I went through a couple of motor mounts. Mag side rear mount to be exact. I was still pulling rpms however. My track is a 155 and I run 60 gram weights, black purple secondary spring, stock helix. Sled consistently pulls right around 8100 at about 9000 feet.
D
Daniel Boondocker
Well-known member
I once had a serious intermittent binding issue with the spring in my team secondary with similar symptoms. Tried several setups with the help of Tri City Polaris. Put in the washers and still didn't fix it. Put on a new secondary and ran flawlessly. Couldn't tell you why. I had to buy the secondary and toss the other one. Not saying this is your issue. Maybe you can borrow another one to see if that might be your issue. You can also get a washer like bearing from Kaman Bearing to try that is similar to the plastic washers but that still may not fix it. Don't have a bearing number.
You also have other symptoms that sound like partly an air flow issue. Just a couple of ideas. Who knows. Not me.
I opened up the air flow on the top air box, added a can, gill vents, and 3 delrins. I'm running Polaris 64's on my 163 with everything else stock in the clutches. I have always run the non-ethanol plug, weigh over 200, and still only drop down to 7900 at 10,000 on the hardest pulls. No det sensor lights. No heating up. What is most interesting is that it pulls down about 100 rpm's at first on wot on a hard pull then the rpm's settle up 100 or so higher after a couple of seconds.
You also have other symptoms that sound like partly an air flow issue. Just a couple of ideas. Who knows. Not me.
I opened up the air flow on the top air box, added a can, gill vents, and 3 delrins. I'm running Polaris 64's on my 163 with everything else stock in the clutches. I have always run the non-ethanol plug, weigh over 200, and still only drop down to 7900 at 10,000 on the hardest pulls. No det sensor lights. No heating up. What is most interesting is that it pulls down about 100 rpm's at first on wot on a hard pull then the rpm's settle up 100 or so higher after a couple of seconds.
thanks, keep them coming
Thanks guys, I will try the ideas you have. I have tried the 10-58 didn't help. I will look into the other ideas. If you have any more ideas I would be glad to try them out . I have also tried black purple, and black white springs in sec. I have 3 delrins in now. Dealer looked at motor mounts, said they looked good? Keep them coming ill try anything
Thanks guys, I will try the ideas you have. I have tried the 10-58 didn't help. I will look into the other ideas. If you have any more ideas I would be glad to try them out . I have also tried black purple, and black white springs in sec. I have 3 delrins in now. Dealer looked at motor mounts, said they looked good? Keep them coming ill try anything
weight
The guys I ride with weigh around 200 lbs. I weigh 170 and they hold better r's with 10-62 than I do with 10-60. I will double check the motor mounts. I like the idea to trade clutches. I will also check the air hoses and intake. Good tips. Thanks, Sam
The guys I ride with weigh around 200 lbs. I weigh 170 and they hold better r's with 10-62 than I do with 10-60. I will double check the motor mounts. I like the idea to trade clutches. I will also check the air hoses and intake. Good tips. Thanks, Sam
pro clutching
i talked to shane at carls today and he said to clean the power valves really good and clean the holes in the cylinder and the power valve to make sure the power valves are getting opened all the way, thats what he said he has found to cause this problem, i pulled mine out and there was a lot of thick oil collected in there, i took them all apart and cleaned everything up really well and put new gaskets in maybe thats all it is
i talked to shane at carls today and he said to clean the power valves really good and clean the holes in the cylinder and the power valve to make sure the power valves are getting opened all the way, thats what he said he has found to cause this problem, i pulled mine out and there was a lot of thick oil collected in there, i took them all apart and cleaned everything up really well and put new gaskets in maybe thats all it is
