prop dilema

[apactorpedo]

which impeller would put out most rpm on stock rxp. i was told to go w/ 15/20 is this to much?

[RXP-REX]

which impeller would put out most rpm on stock rxp. i was told to go w/ 15/20 is this to much?

15/20 would be WAAAAAAAAYYYYYYYY too much for a stock RXP.

If you want to run a 15/20 then you need to be installing an external IC at least.

[jawz]

I've got one spinning 8400 with ALOT of work to it

[Impros]

A stock RXP would run best with a Concord pitched from a 14/19 for a stock ski. This would let the engine rev to 8100. If you just want the most rpm, you could go lower, but there's no reason to run a stock ski any higher than that.
D