Is 9,000 RPM okay?

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mile9c1

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2001 Vmax 600 deluxe... my sled will bump past 9,000 RPM when taking off at WOT. Is this normal? I thought the max RPM was 8500.
 

It' ok if you running Aaen pipes. Other wise I think that your right, 8500 is around stock. Could be belt, springs, dirty clutches or not enough weight, but I would check the wear parts first before going after weight.
 
Everything's stock except for a 1.25" track. The clutches are clean but I will clean the belt again before the next ride. The sled also seems to slow down quicker than it should (all driveline bearings are good). I wonder if I should try a lower setting on the seconary spring? My aftermarket service manual says to set the secondary spring at 40 degrees, but the tech specs here say to set it at 80. It's currently at 80.
 
Take off and slow down a dozen or so times. Check clutches and see if they are getting hot. They should be warm but not hot. Hot usually goes hand in hand with belt slipping. You say clutches are clean, is that the sheaves or entire clutch (rollers) sticky rollers or a worn belt could cause it.
 
The clutch faces are clean but I plan to clean both clutches in the dishwasher tonight to eliminate the dust on all surfaces. Nothing feels sticky or worn inside the clutches. The belt with is well within spec... I was going to replace the belt anyway but my local dealer is closed for some reason.

The belt tension seems okay (about the same as my Viper) but this Vmax has always had a little squeal at idle. I plan to check the alignment tonight if I can get the starter gear off.
 
The 600's overrev usually from the factory. If i can remember right, Turk's magic formula for the stock clutched 600 was 4.1 gram weights in the center and 3.6 gram weights on the tip of the primary weight. Hope this helps.
 
SX600abuser said:
If i can remember right, Turk's magic formula for the stock clutched 600 was 4.1 gram weights in the center and 3.6 gram weights on the tip of the primary weight.
Click to expand...

The stock specs listed on this website say "Clutch Weights (rivets) 10.3Al & 13.9". How does this relate to the 4.1g/3.6g? They seem much too different to interchange... I'm a complete clutch newbie.

My RPM's come back down to around 8,500 after they spike at 9,000. My Viper, in the same conditions with same track only reaches to 8,600 and stays there (no over rev).
 
The 10.3 and 13.9 are length in mm. The Al means aluminum (lighter then the same size in steel). 4.1g and 3.6g are weight in grams. You can see more info in the Tech Pages.
 
Add the numbers, don't multiply. (3 + 3) * 10 = 60°

Sent from my SCH-I545 using Tapatalk
 
Update: I was hoping for a 1-stop solution so I installed a new OEM belt and Bender clutch kit, and now it shifts at 8,000 RPM. The secondary spring is at 6+2 so Bender said try 6+3 (and if that doesn't work they'll send lighter rivets).

Question: When installing the secondary helix, how far do I turn it under the spring preload? I've been setting the spring in the holes then turning the helix to the nearest mounting bolts. Is that the correct procedure?
 
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do you know what gram rivet you put into the tips of the weights from the clutch kit?
 
I don't have the sheet in front of me but I believe they were 13.9mm (3.6g). The OEM outer rivets were 0.8g aluminum.
 
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