P Spec Tunnel Props?

[JimmyDuncan]

What are some good props to start with on a P Spec Tunnel?

 

[Kris Flynn]

What Hull? What Motor?

I know the Ul1 motor likes a 42X55, but maybestart with a 40X53 or X440 or similar to 'dial' it in then go bigger

 

[raptor347]

42x55 is a great place to start. My favorite version is back cut .090" and cupped to 3.8". I've also run an ABC 1614, touchier setup than the 42x55. X442 with the tongue removed isn't bad either.

 

[sneakysneakyracing]

have you guys had a look at the alloy props from octura i just recived some and thought they were impressivly light is this an advantage or a disadvantige i have heard meny nitro hydro racers saying a bigger flywheel can spin a heavy big prop but then why would so meny companys offer lightend flywheels for more rpm? neu recomends a octura x450 for a 1527 motor i just recived mine and it came in alloy the weight is half of a x447 bronse. testing will come when the ocean is flat. i took my boat out with a m445 and was flipping at 40mph on 4s



check it out

 

[photohoward1]

have you guys had a look at the alloy props from octura i just recived some and thought they were impressivly light is this an advantage or a disadvantige i have heard meny nitro hydro racers saying a bigger flywheel can spin a heavy big prop but then why would so meny companys offer lightend flywheels for more rpm? neu recomends a octura x450 for a 1527 motor i just recived mine and it came in alloy the weight is half of a x447 bronse. testing will come when the ocean is flat. i took my boat out with a m445 and was flipping at 40mph on 4s

What alloy are we talking about? Aluminum? Too soft and you can throw a blade.