I did some more prop swapping in superchickens and added another superchicken to the mix. unfortuantly I didnt have my tiny tach with me so this was all seat of pants feel compared to the mako 60 prop that was in the 750bp chicken and a kawasaki STS 750 that i have a small pin swapped in using them as a kind of baseline.
New superchicken had a 750 sp stock CDK dual carbs stock SC650 pipe and a 13-18 solas impeller, didnt cavitate, accelerated pretty good but didnt reach max rpm imo (did not verify with tach but it you could tell) at one time i had this prop on a stock chicken with a pump stuffer and it did 39, i wanna say the 750sp did 36 or 37 with the 13-18. also not sure how much the 650 pipe was choking out the 750 with this set up.
ended up throwing a STS pipe on this 750 small pin with an XP waterbox and the rad dudes 2" exit and swapped a single mikuni SBN 44 (150 main 120pilot 80g spring, may be too rich) and swapped the 9/15 hooker on it with a stubby pump cone. i will say it is pretty close and the accleration is pretty good, it did slightly better than the big pin motor though im also questioning my jetting. i plan on putting the skat trak 16 i have laying around on this to cofirm if i am overpropped or its a carb tuning issue.
lastly i threw the 13-18 onto the 750bp chicken with a pump cone, so damn close but the mako 60 is still more fun. wouldnt hit max rpm and didnt rip like the mako 60 did. trying the mako 60 with the stock pump cone to see what that does vs the stubby. i wonder if 12-17 would be the ticket or if that pitch exists. The mako 60 will cavitate if you give her the beans at a low enough rpm though so shes not "perfect" but its the closest i got so far and rips the mid range real good.
will probably be selling a very lighly used 9/15 hooker and 13-18 solas in the near future stay tuned.
lakes are starting to get cold, trying the skat 16 with the 750sp this weekend but it will probably be the last swap of the year as i am out of props to try at that point.
