Understanding propellers

[RoscoeYo]

needed a spare quick for today called acme monday theyre out of 2315's dam talked to the guy and decided on the 2419 just a bit more cup should be fine as im only at 550-600 above sealevel if its too torquey if thats possible ill get a 2315 when theyre back in stock. 1235 just wasnt enough for my setup

[UWSkier]

In reading this thread ya'll have me talked into replacing my 3 blade prop to get a better hole shot for skiing. My current prop is I assume the original. The only numbers on it are 13x13 LH and MD1298. My current top end is 41mph but how much of that will I loose? As long as I can do 36 to 38 for barefooting I'm OK. Is a 4 blade 1235 the right prop to go to?

Don't try to put a 4 blade on there. Those are mostly designed for V drives that run a 1.5:1 gear redux. No Malibu direct drives use a gear reduction transmission. Acme 515 or 525 is the way to go for you. You probably have a CVP if it's a Malibu of that vintage, which means your prop is a ticking time bomb.

[BlackBluMalibu]

needed a spare quick for today called acme monday theyre out of 2315's dam talked to the guy and decided on the 2419 just a bit more cup should be fine as im only at 550-600 above sealevel if its too torquey if thats possible ill get a 2315 when theyre back in stock. 1235 just wasnt enough for my setup

There is a 2315 for sale by a BuCrew member. You might check he classifieds here in TheMalibuCrew.