Maintenance & Technical > KX500 Original
Shaving the flywheel
gowen:
The PVL spikes the horsepower to the top at the expense of the bottom end. Really no gains, just eradicates the bottom end power and moves it to the top. 7500+rpms. The flywheel is MUCH (maybe weighs 5% the weight of the stock flywheel?) lighter. We've discussed this before, but check out the attached photo. Then look at your stock flywheel. I think it's worth every penny as long as you have open space and/or a strong leg to kick over after stalling it because you were not riding it like you stole it. :mrgreen:
demographic:
Looking at that PVL with internal flywheel it strikes me that the fact that it weighs less than the standard one isn't the main point about it.
The fact that it's weight in concentrated closer to the centre would make quite a big difference even if it weighed the same (a bit like when high divers do a forward roll, when their arms and legs are out they roll slowly and when they hold them in tight they roll far faster).
As angular momentum is affected by the mass of the object (the weight of the flywheel) and the velocity (and the larger flywheel has a higher peripheral velocity even at the same RPM) even two equally weighted flywheels with differing diameters would have different amounts of angular momentum (or flywheel effect).
Err, that how I figure it anyway :-)
FuriouSly:
So... Arigato... how you likin' the shaved flywheel? I know, but the people want to HEAR!! zoom, zoom...
Sly
Polar-Bus:
I work in a machine shop thet manufactures all types of severe service industrial pumps. When we balance the impellers, we have precision scales to keep track of metal removal (or sometimes adding). If you guys need a specific oz. removed I could possibly help. Send me your flywheel, and I can machine it down, and document the old/new weights to whatever you want. I know my Stealhy weight is 14 oz. And it made an awesome enhancement of torque down low, I felt little difference in "revs". If anything I do notice a longer over-rev WOT. I don't need to comment to you KX500 guru guys, when shaving your flywheel, go INCRAMENTALLY small removal rates. You can always shave a bit more, rather than have taken off "too much".
Rich
Arigato:
It definately made it more snappy. Not uncontrollably, just sweet goodness. :mrgreen:
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version