Maximum allowable engine rpm

[jivoy]

What are the maximum allowable engine speeds on alpha? I have 8570 rpm. Weight 72 grams. 1000 feet high

 

[bgraff1]

8050-8150 is what i shoot for for stock sled. anything much over that your losing HP fast

 

[d1100t]

Are asking asking what rpm the rev limiter is set at?

 

[jivoy]

Are asking asking what rpm the rev limiter is set at?

And that too

But the most important question: what can I do with high rpm?

 

[d1100t]

You need to add heavier weights to the drive clutch.
You're at a pretty low elevation.
I'm guessing some where around 76 gram weights, maybe even more than that??

 

[jivoy]

I'm afraid the weights will arrive only at the end of the season

How bad 8500 rpm for engine?

 

[kanedog]

8500 no problem.

 

[fudge313]

Order adjustable weigths.. i ride on sea level and now i have 77g and still it goes over 8200rpm..

 

[jivoy]

Order adjustable weigths.. i ride on sea level and now i have 77g and still it goes over 8200rpm..

What weights do you use? I found only 74 grams in the Arctic cat catalog

 

[kanedog]

Greg from Jaws Pipes says 8500 on a Cat is like 8000 on other sleds. He said it’s because of how skookum and how they are engines are designed.

 

[Frostbite]

MDS adjustable weights! They pull like a freight train. Talk to Tom. He will hook you up.

 

[jivoy]

I see the maximum power at 8000-8200 at dyno-test video


after 8200 the power drops sharply and at 8500 it should be very low. I think maybe this is a measurement error?

 

[kidwoo]

It's not a measurement error, it's a two stroke.

 

[bgraff1]

It's not a measurement error, it's a two stroke.

exactly what kid says, power drops off hard after peak RPM. order a set of adjustable weights (i love my MDS clutching) and tune it for your elevation. call steve at MDS 509-899-0605 and he will set you up

 

[runner]

Dalton |

Dalton |

www.daltonindustries.com