comet 102 on a gpx

[thunderjet440]

using thundershift weights in a comet 102,right now i'm at 45.9 grams and about 200 rpm from where i want to be..8200,i have the tip empty and switched to the silver/orange spring for the stiffer rate,neither purple spring would get past 7500 with this weight,so later on i'm going to twist the secondary spring,but i got to thinking i may have a profile here that is to aggressive and may have to go to a comet weight,where would be a good start? a-8,a-9 a-3? basically looking for a 5000 engagement and 8200 to 8300 top rpm have the silver orange,both purple springs,and the gold

 

[YAMMIEGOD3:16]

DUDE, I HAVE A SET OF A-3 I RAN IN MY gPX, AND 79 SRX YEARS AGO. YOU CAN HAVE THEM IF YA NEED THEM. 3:16 (yammie tony)

 

[thunderjet440]

thanks,may take you up on the offer,i'm getting closer from where i started,problem is this thing called work,not enough light when i get home,enough for 1 test run and any adjustments and it's already dark out,should of kept the head light on.pulls REAL hard in the midrange portion just a little shy on top,i'll wind the secondary tighter mon eve and give it another try tues,i also have a nos sr secondary spring to try.

 

[YAMMIEGOD3:16]

THAT WILL RAISE RPM WINDING THAT SECONDARY TIGHTER, SO SURE, ITS WORTH A TRY. YOU LET ME KNOW. 3:16 (yammie tony)