tedgoesfast
Expert
i know a 06 to 10 apex turn it 10500 let it pull to 10700 what do you turn a 2011 and up at for best results
blade072
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I have a 2011 Apex XTX and I try to let the engine pull hard at 10400 to 10500. I added extra weights in the primary to do this.
tedgoesfast
Expert
ok but dont understand on dyno sheet the make hp at 10100 do the just pull better there
yooper1
Expert
If you pull higher then 10,500 the motor pulls timing out. Try to keep it around what blade072 stated. 10400-10500.
10,500 on a 2011 as well? I thought they should be at 10800 but i might be worng
yooper1
Expert
I thought the same however it's 10400 to 10500.
ranger1
TY 4 Stroke Guru
You will be making less hp at 10,800 as it is already falling off the power curve.
wow then i need to get her down by 300 rpm. anyone know how much weight it takes to bring it down 300?
1 gram = 100 rpm You Should be bang on after a gram to each weight.
ranger1
TY 4 Stroke Guru
Has it always been that high? Have you tried a different belt? Sometimes the belt makes a difference, not sure if that is your issue but it is an easy one to try & find out.
sled has stock gearing with the center of the track studded. it has a new belt (now has 1800 KM, sled now has 14500 km). I added the Schmidt bros. stage 2 clutch kit before my week long trip. center rivets were changed for the clutch kit for the mid-range so not sure of the weight of those, i should have weighed them before installing them. the kit also had the softer primary spring for the lower engagement. the secondary is wrapped at 70* per the instructions which i believe was stock as well. stock it would go to 10700 or so. Now it hits almost 11000 but comes down to 10800. i'm going to call Schmidt but i'm sure he said it has to be at 10800 but i might have misunderstood. it might have to hit there but settle to 10500. it feels stronger in the mid-range thou. unfortunately winter is over so i'll have to play with it next fall.
Riceburner
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Here you go.
10,100 to 11,000 not a lot of difference.
http://www.kartman.se/diverse/dtrapex11Exup.pdf
Cool thanks riceburner for posting that link. Like you mentioned there isn't too much of a difference so I'm in the ballpark. I'll just add a gram or so to the tip and it should be good.
ranger1
TY 4 Stroke Guru
So it holds its max peak horse power from 10,100 right up to 10,600 & then starts to fade off. Thanks for posting that Riceburner, thats awesome info! Nice to know the exact parameters we should be running at.
tedgoesfast
Expert
remember guys that was a pre production model i havent seen one dyno over 152hp from production models
