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Apex clutch weight ????'s

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TurboMatt

Well-known member
Mar 23, 2008
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I have a fairly stock Apex mtn - Camo ex. track, 18-42 gearing, undertunnel exhaust. I'm running the supertips weights and have finally started to be able to play around with them. Trying to get operating rpm dialed in. When I originally purchased the weights from Ulmer, he sent we the wrong ones, he sent me the 60g bases & for a n/a this is bit too heavy to start with. I started out with a bunch of weight on them and have been removing slowly to bring up my rpm. With just a bare 60g base weight I finally got to my target rpm. This is running the sled in Northern Michigan @ about 1000ft elevation. With just the bare 60g weight, I'm pulling 10,500rpm in the powder and 11,100 on the hardpark. Right about what I wanted.

Does this seem right? That weight seems really light to me. Could something else be wrong?
Now comes the real problem. What do i do when I go out west? I'm assuming I'm going to have to machine some weight off these things to get the weight down.

What are others running for weight on a n/a Apex mtn. with Supertips weights?
 

roughrider99

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Lifetime Membership
Jan 9, 2008
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Fernie,BC
the supertips have a wayy more aggressive curve on the weights while the stockers are nearly flat. with the curve to the weights u hardly need to run any weight to them.
 

TBird

Well-known member
Premium Member
Jan 16, 2008
673
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North of Sweden
Not to worry, it sounds right!
The Supertip 60g weights is used to boosted sleds, only add some washers and go.
Yamaha 8BU-00 weights ~48g loaded with 9g is used on lighlty boosted sleds.
You bought good weights, maybe to heavy for your application, you lost a litte tuning ability when have to run it empty.
 
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