Nytro RPM Question

[clatla]

I have a 09 Nytro MTX 153. The last time I was out west I noticed I was only getting 7500 RPM's at elevation (11,000'+). Once we got back down around 8-9,000' I could pull 8700 on the trail. I didn't notice thr RPM's until the last day so didn't play with the clutch. MY question si what is redline and what kind of rpm's should I be aiming for. I have a Heel Clicker clutch kit that they told me what to run for that elevation. Wondering if I would have been better off taking the rivets out of the stock weights (8fs)and running that setup.

Thanks in advance!

 

[natedawgedog]

I have a 09 Nytro MTX 153. The last time I was out west I noticed I was only getting 7500 RPM's at elevation (11,000'+). Once we got back down around 8-9,000' I could pull 8700 on the trail. I didn't notice thr RPM's until the last day so didn't play with the clutch. MY question si what is redline and what kind of rpm's should I be aiming for. I have a Heel Clicker clutch kit that they told me what to run for that elevation. Wondering if I would have been better off taking the rivets out of the stock weights (8fs)and running that setup.

Thanks in advance!

I belive the 09'xtx and other nytro's engine rpm is limited to 9400... but I may be wrong... I see 9200 rpm on the lake with my xtx on long speed runs

 

[akvector]

8900 is target rpm. you will definately have to re clutch for elevation.

GWG primary spring and run the weight empty should get you close.

I have 13.3s in all three in mine now and rpms are pretty close riding at our elevation so that should work for you in MN as well

 

[clatla]

8900 is target rpm. you will definately have to re clutch for elevation.

GWG primary spring and run the weight empty should get you close.

I have 13.3s in all three in mine now and rpms are pretty close riding at our elevation so that should work for you in MN as well

I have a Heel Clicker kit for sea level and it rocks. They told me what spring and weights to run above 11,000' I thought they would have a pretty good idea but....

The guy I bought it from ran the 8fs w/rivets and the GWG in W Yellow Stone around 8,000'. I didn't want grind the rivets out if I didnt have to. Hoping that I could have a couple set ups with what I had.

 

[hugger70mtnmax]

The 8fs weights with no rivets and gwg spring are supposed to be the high elevation setup stock. I have found when I am running around 10500 feet it is a little low. I am usually pulling around 8200-8300 at that elevation. I have found snow conditions have a big effect on rpm also. Sticky snow or set up snow can pull down the rpm by 3-400. I rode today and with the spring snow I was running almost 500 low.

I have been told by most people target is around 8600.