Primary Weight / Boost

[friscospices.com]

I run about 7lb boost and ride about 10k +- and have my primary loaded up with 72.3 grams. Runs perfect 8200WOT. Now lets just say one day I wanted to put some race fuel in and run 10 lb boost, how bad would it over-rev. I have the rooster adjustable weights but is there a "rule" for pounds of boost / grams of primary weight. I have found over the years that 1 gram is equal to about 150 RPM's in most cases. Also if I where to add the extra boost and was going to add X amount of weight is it better to add that weight closer to the pivot point of the weight or out on the toe? Yhanks in advance.

 

[2XM3]

I'll take a wild guess and say 76 gr, but problem is the power vs boost is not a linear curve, ie 5-7 hp difference will not equal 8-10 psi jump power wise. I'm finding that 9 psi and up power goes up a LOT and the sled is harder and harder to clutch perfect. (just become more critical) But i'd start at 76-78 and see how it goes, then try the 44-48 side of the helix. imho


oh, with the turbo so far i've had better luck adding at the toe end for higher boost

 

[bboll]

I'll take a wild guess and say 76 gr, but problem is the power vs boost is not a linear curve, ie 5-7 hp difference will not equal 8-10 psi jump power wise. I'm finding that 9 psi and up power goes up a LOT and the sled is harder and harder to clutch perfect. (just become more critical) But i'd start at 76-78 and see how it goes, then try the 44-48 side of the helix. imho


oh, with the turbo so far i've had better luck adding at the toe end for higher boost

TTT...

Anyone else have a good rule of thumb on primary weight amounts given X lbs of boost? I'm also in interest in people experience with the adjustable weights...

 

[friscospices.com]

This year I will be adding some more boost 9-10.

 

[2XM3]

Take a look at the clutching thread, there are some good combos there. If you just up the weight for higher boost the sled gets sloppy on the bottom end. and belt slippage ect. You need to do helix and springs as well.



http://www.snowestonline.com/forum/s...d.php?t=301548

 

[lorne1176]

Weight the toe heavier, that's what I did and worked well for me anyways.....