2013 par ultimate combo det issue

[doobie]

posting for a friend. brand new 2013 has a full par combo (slp pipe,13.1 head,pc5, clutching). runing some race gas 68.5g mds weights par helix. 4500-7000ft (golden bc). been hitting det all day lomg after being on the gaz for 3-4 secs. det showing up on dash. peaking out at 8400. i know thats a bit high but will that cause det? thx

 

[1200psi]

posting for a friend. brand new 2013 has a full par combo (slp pipe,13.1 head,pc5, clutching). runing some race gas 68.5g mds weights par helix. 4500-7000ft (golden bc). been hitting det all day lomg after being on the gaz for 3-4 secs. det showing up on dash. peaking out at 8400. i know thats a bit high but will that cause det? thx

Doobie you need to add more weight in the weights. Your sled is over reving and you need to change the bolt setup in the weights . If you need some help feel free to call us.

Brad

 

[doobie]

thx passed the msg. simple fix

 

[Cascade Addiction]

too light on the weights??

I am running 13.1 head and hps can with MDS weights, 68grams in the Cascades at same elevation your posting and I sometimes hit rev limiter but no det, My buddy is running your buddy's same setup and 67.75gram MDS and last Friday was banging rev limiter barely touching the gas, we were riding between 2800' and 5700' all day but still no det, he is running 50/50 mix of avgas and 91 non ethanol. I am running just 91 non-ethanol, I'd say that you probably need some more weight in the clutching for sure, but not understanding the det issue, how much race gas is blended in? I have another friend with just the PAR 13.1 head and MDS clutching and running 2 gals of race and would hit det 2-3 times going in to riding area when two of us were fine, dealer found his timing was off on his sled, and it was a new sled. Maybe fuel map is off? Did your buddy set the TPS with his computer? Could be several things, hope you guys figure it out and get it on the snow, sounds like you've got some up there to ride, no fun having wasted days. Good luck.

 

[theultrarider]

I am running 13.1 head and hps can with MDS weights, 68grams in the Cascades at same elevation your posting and I sometimes hit rev limiter but no det, My buddy is running your buddy's same setup and 67.75gram MDS and last Friday was banging rev limiter barely touching the gas, we were riding between 2800' and 5700' all day but still no det, he is running 50/50 mix of avgas and 91 non ethanol. I am running just 91 non-ethanol, I'd say that you probably need some more weight in the clutching for sure, but not understanding the det issue, how much race gas is blended in? I have another friend with just the PAR 13.1 head and MDS clutching and running 2 gals of race and would hit det 2-3 times going in to riding area when two of us were fine, dealer found his timing was off on his sled, and it was a new sled. Maybe fuel map is off? Did your buddy set the TPS with his computer? Could be several things, hope you guys figure it out and get it on the snow, sounds like you've got some up there to ride, no fun having wasted days. Good luck.

If/when you hit the rev limiter hard, it will trip the det light. Very common issue when running too light of a weight or not enough helix. The most common senerio is that it DOES NOT det at topend. It shows up out of the hole or out of a corner when you first smack the throttle. Det light flashes or comes on solid til you back out of it. Try weight before chasing around your fuel issues.

 

[die hard poo]

Just another thing about weight, I have noticed the RIDER weight actually plays a big roll into the over rev det thing. For instance, My wife weighs 115lbs and I weigh 205lb and she was complaining her sled (11 pro rmk 155) was cutting out and acting funny. I would ride it and it would run just fine, pull rpm right up to 8150 and hold all day long. So then I sat and watched her and sure enough it cut out on her and det'd. Then the next day I rode ultrarider's sled and his set up works great for him (he is a heavier rider than me but not sure what weight) and it did the cut out det thing to me while riding his sled. That's when I knew that since my wife is much lighter than me, she needs more clutch weight to keep the rpm down(Added two more grams and it runs perfect for her). I have never owned a sled where the rider's weight impacted the rpm so much... That could be why someones recommendations work for them, but not for you. Just keep that in mind....

 

[Scott]

Just another thing about weight, I have noticed the RIDER weight actually plays a big roll into the over rev det thing. For instance, My wife weighs 115lbs and I weigh 205lb and she was complaining her sled (11 pro rmk 155) was cutting out and acting funny. I would ride it and it would run just fine, pull rpm right up to 8150 and hold all day long. So then I sat and watched her and sure enough it cut out on her and det'd. Then the next day I rode ultrarider's sled and his set up works great for him (he is a heavier rider than me but not sure what weight) and it did the cut out det thing to me while riding his sled. That's when I knew that since my wife is much lighter than me, she needs more clutch weight to keep the rpm down(Added two more grams and it runs perfect for her). I have never owned a sled where the rider's weight impacted the rpm so much... That could be why someones recommendations work for them, but not for you. Just keep that in mind....

GREAT post. It's also why you just don't go listening to everything on the interweb and take it for gospel. Do some checking your self and try to do some tuning. Don't just assume that there is a problem.

 

[Cascade Addiction]

Just another thing about weight, I have noticed the RIDER weight actually plays a big roll into the over rev det thing. For instance, My wife weighs 115lbs and I weigh 205lb and she was complaining her sled (11 pro rmk 155) was cutting out and acting funny. I would ride it and it would run just fine, pull rpm right up to 8150 and hold all day long. So then I sat and watched her and sure enough it cut out on her and det'd. Then the next day I rode ultrarider's sled and his set up works great for him (he is a heavier rider than me but not sure what weight) and it did the cut out det thing to me while riding his sled. That's when I knew that since my wife is much lighter than me, she needs more clutch weight to keep the rpm down(Added two more grams and it runs perfect for her). I have never owned a sled where the rider's weight impacted the rpm so much... That could be why someones recommendations work for them, but not for you. Just keep that in mind....

GREAT INFO....great point that gets overlooked but so simple!

 

[tool_man]

Just another thing about weight, I have noticed the RIDER weight actually plays a big roll into the over rev det thing. For instance, My wife weighs 115lbs and I weigh 205lb and she was complaining her sled (11 pro rmk 155) was cutting out and acting funny. I would ride it and it would run just fine, pull rpm right up to 8150 and hold all day long. So then I sat and watched her and sure enough it cut out on her and det'd. Then the next day I rode ultrarider's sled and his set up works great for him (he is a heavier rider than me but not sure what weight) and it did the cut out det thing to me while riding his sled. That's when I knew that since my wife is much lighter than me, she needs more clutch weight to keep the rpm down(Added two more grams and it runs perfect for her). I have never owned a sled where the rider's weight impacted the rpm so much... That could be why someones recommendations work for them, but not for you. Just keep that in mind....

Exact same issue with my wife's 09 600 RMK. Works great now with the right weight for rider weight.