x640 or x442 prop

[vvviivvv]

feiago 8xl 4s in a 60cm cat

which prop + speeds on each of them?

thanks.

[Flying Scotsman]

That is a lot of motor for a 24" cat...what hull....what batteries...what ESC. what run times??? Your suggested props are way too large

Douggie

[vvviivvv]

4s2p zippy's 2650mah each 30c<-
AS26-150bl esc
drifter s hydro marine

[Flying Scotsman]

You are running 2 4S2P in parallel ?
Have you bought the motor?
Is this your first boat?

Douggie

[vvviivvv]

2p as in 2650+2650 5300 total and no its not my 1st have the motor from annother project

[Flying Scotsman]

The motor is way overkill and what run times. The ESC I am not familiar with is it a car/aeroplane design

[properchopper]

I've run my Drifter S with an 8XL / Hydra 240 and a X642 for over a year on 4S 2P
4100 30C Neu batt's. Close [ 59.1 GPS] to 60 MPH. Watch temps after 2-3 minutes. Highly entertaining turns, er, barrel rolls at speed

[Flying Scotsman]

Tony, you are the man. I was just trying to caution this dude on his setup

Douggie

[vvviivvv]

i was present at my uncle barrelrolling his hpr135 up the shore after spending 1000's of £ building it im not gonna make the same mistake im building the hpr06 atm this is a quick build for now

[vvviivvv]

so x640 over 442?

[properchopper]

Try both. Tape up good & use lots of flotation !

[vvviivvv]

foam inserts around the hatch shaft is perfectly water-tight + hatch tape

[properchopper]

foam inserts around the hatch shaft is perfectly water-tight + hatch tape

I'd pin the front of the hatch. If you're looking for high speeds, you may suck the hatch off in a flip, taped or not. I sucked a hamburger-sized patch of gelcoat off the hatch at a race at Kaiser Cove ; the hatch would've come off without the pin [ a small rivet]. All my hatches are now pinned or otherwise secured.

[vvviivvv]

ill think something up tomorrow along them lines

[properchopper]

Here's another easy hatch-securing technique : a garage door opener belt-clip epoxied to my DF 33 hatch. The dark area on the hatch is the repair to the same gelcoat-ripping event that happened to the Drifter. Saved the boat, for sure ! [Water gets hard and abrasive at high speeds, trust me !]