Max RPM for your ProClimb

[Shwinecat]

Can anyone remember what elevation the dyno test was done at.

 

[Shwinecat]

my butt dyno says 82 runs better than 8
ive been running mine in the 8200-8400 area however anything above 8350 seems to fall off and you can feel it. i compare my sled that runs at 82 and my dad sled that runs at 8 and mine feels better and is peppier
overall i would aim for above 8 but below 8350

The reason you dyno is so you can take out the variables. If you are riding same area as your dad's sled and they are set up the same other than clutching your's should feel peppier. You have to be running lighter weights to reach higher rpm which is allowing the motor to rev quicker. If that is the feel you really like than stay with it. The dyno is showing if you put your sled and your dad's under load and he stays at 8,000 or a little less his sled is pulling way more horse power.

 

[BBP]

The 2014 arctic cat manual shows peak HP @ 8100-8200. Mine runs good there.

 

[05M7]

I think some of you fellas need to not trust your butt dyno so much and trust the cold hard facts. Dyno sheets don't lie. (unless doctored)

 

[rpmboy]

amen to that brother!!!!!!!!!

 

[arctic2009]

I think some of you fellas need to not trust your butt dyno so much and trust the cold hard facts. Dyno sheets don't lie. (unless doctored)

The problem with the butt dyno is after you make a change you want to believe that it made a difference in performance. Like you said, cant deny the true data.

 

[Bacon]

The Cat tach is notorious for reading 100 rpm high so I think that has a bit to do with some sleds running better at higher rpm. Tax reads 8200 and your actually running 8050-8100.

 

[Phizzer]

Good info. I was unaware of the tach inconsistency. Those dyno charts were exactly what I was looking for. I felt like my sled pulled incredibly hard at 8150ish and will shoot for that again.

Interesting that the 10-11 M8 had a higher rpm band? Isn't it the same HO motor?


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[d1100t]

Tighter muffler on the 2010-11 sleds

Dyno tech talks about the muffler having more back pressure on the 2010 and 2011 sleds.
It kinda looks like those motors made 2-3 more horse power???

 

[leadfoot33]

well i can tell you we have done many tests side by side and mine out performs. a good point is the tach being out. take it for what its worth but when we rev them up a bit into the 82 area they perform better for us 78-8 feels sluggish

 

[powdermuncher]

Line em up, the bull**** stops when the throttle drops--I will bet on the sled with a slight over peak PPM that pulls down to peek any time over the one running at peek and getting dragged down to bellow peek once it needs to backshift.
Gaps and dyno sheets are great for Keyboard racing. A good starting point but very seldom win Races.

 

[Shwinecat]

Good info. I was unaware of the tach inconsistency. Those dyno charts were exactly what I was looking for. I felt like my sled pulled incredibly hard at 8150ish and will shoot for that again.

Interesting that the 10-11 M8 had a higher rpm band? Isn't it the same HO motor?


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I have 2010 x-fire and it is the hottest 800 I have ridden. I have talked to several guys that race and they told me cat tuned them back down in 2011. One of the racers has taken more than one 2010 engine and put it in a newer model.

 

[Shwinecat]

The dyno is a tool used to assist in verifying if adjustments or additions to the "motor" hurt or helped the performance. It removes all variables if tested correctly. I agree it gives a good starting point of trying to get the sled dialed in at optimum rpm's for performance. Once the rest of the machine and rider are thrown in the variables are endless.

I have two exact same 2015 M8000 sno pros. I bought one for me and one for my son. They are set up exactly the same. Mine will just flat wax my son's. I have hours into trying to figure out why. The difference is enough I have to clutch around it. I would really like to lite his on fire or drive it off a cliff.

 

[kiliki]

The dyno is a tool used to assist in verifying if adjustments or additions to the "motor" hurt or helped the performance. It removes all variables if tested correctly. I agree it gives a good starting point of trying to get the sled dialed in at optimum rpm's for performance. Once the rest of the machine and rider are thrown in the variables are endless.

I have two exact same 2015 M8000 sno pros. I bought one for me and one for my son. They are set up exactly the same. Mine will just flat wax my son's. I have hours into trying to figure out why. The difference is enough I have to clutch around it. I would really like to lite his on fire or drive it off a cliff.

check the fuel pressure between the two. usually the sled with the lower fuel pressure is the faster one.
2010 came with the most power on the HO and has a slightly different pipe.

 

[arctic2009]

The dyno is a tool used to assist in verifying if adjustments or additions to the "motor" hurt or helped the performance. It removes all variables if tested correctly. I agree it gives a good starting point of trying to get the sled dialed in at optimum rpm's for performance. Once the rest of the machine and rider are thrown in the variables are endless.

I have two exact same 2015 M8000 sno pros. I bought one for me and one for my son. They are set up exactly the same. Mine will just flat wax my son's. I have hours into trying to figure out why. The difference is enough I have to clutch around it. I would really like to lite his on fire or drive it off a cliff.

swap the clutches from your machine to the other and see if the problem is the sled, or the clutches themselves.

 

[Vern]

My '14 definitely feels like it pulls harder at 81-8200 than at 8300+. 8300 or higher is all noise and no go.

 

[Shwinecat]

Just out of curiosity what is max rpm on the 800. I sometimes think when people talking about it going high in rpm and then falling off they are at the rev limiter.

 

[ranger12]

Dyno Chart

This a dyno chart that I had.

 

[Phizzer]

Line em up, the bull**** stops when the throttle drops--I will bet on the sled with a slight over peak PPM that pulls down to peek any time over the one running at peek and getting dragged down to bellow peek once it needs to backshift.
Gaps and dyno sheets are great for Keyboard racing. A good starting point but very seldom win Races.

That is in an interesting point. I would think that if your clutching was spot on, the backshifting wouldn't be an issue, and you would hit your peak RPM almost immediately. And backshifting would require you to actually let go of the throttle for a second Who does that when they're racing??