WTB H-4

[CRT_MAN]

hey all i am looking for a H-4 to run on my .21 SGX has a mac in it and i can not turn my 1445 at 2500 feet i can only run that prop at sea level so i need the h-4 for the higher elevation let me know what you got thx john

 

[shoboat]

John,

It is the amount of cup in the propeller that is killing your RPM.

You just need one with less cup. My H-4's are ordered and hopefully

will be here by the end of the week. Stock cup on a 1445 is usually around 2.73".

I run anywhere from 3.00" to 3.60".

Thanks,

Mark Sholund

 

[CRT_MAN]

well i am not sure on the cup of my 1445 what is a good amount for a A- hydro