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Discussion Starter #1
Black Magic has a 58/55/53 helix. Anyone tried it ? Right now I am using a 58/52 helix. Any input would be appritiated!!!!!!!!
 

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Discussion Starter #3
I am using it on an f7. ornge wht prim. spring , 66 gram weights, And that helix. It pulls real hard in 660, out to about a 1000ft. Haven't had a chance to raceagainst any other stock F7's
 
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