Prop suggestion for Challenger 43?

[pmx]

Greetings,

Noob here trying to improve performance of a Challenger 43. Any suggestions for a prop? Or other ideas? Boat is pretty slow right now.

Current Set up:
Scorpion 5035 500Kv
Schulze 40.160
10s LiPo (Two 18.5V 5000mAh 25C Venom batteries)
X455 prop

[Boatman]

I thinks you need more voltage. Get rpm up a bit and that prop should do.

[Boatman]

Yes. Rid yourself of the venom cells and bump to 12s or a higher kv motor. You want around 30k rpm. Voltage x kv equals rpm unloaded

[Make-a-Wake]

Yep........your loaded rpms are probably under 20,000.................12s min.

[pmx]

Thank you for the replies. So it sounds like the batteries and the motor are the problem, not the prop?

Would a Neu 1415 1y 2200Kv work in this boat? (already have one)

[Brushless01]

No the Neu would not work too small a motor.

[pmx]

Thanks Brushless. I am going to try a Fegio 580L 1400Kv motor. It sounds like that should be run with 8S. Is that right? Would the 10S be too much for sport boating?

And this may be a dumb question If we stay with the Scorpion 500Kv, could we hook up a 3rd battery? 5S + 5S +4S = 14S. That would get it close to 30K.

Thanks for helping a noob.

[Brushless01]

Not sure the feigao would push that boat reliably. Stick with your current motor and run 12s.

[Brushless01]

Not sure about the batteries should work if there the same mah and C rating.

[scullyeng]

Before you scrap your whole setup, you should try a gas boat size prop.

[Rumdog]

How are temps? Do not change the motor for a 580l. It wont push that big boat. You should run 12s2p on that motor.

[pmx]

Before you scrap your whole setup, you should try a gas boat size prop.

Looks like they run real big props? Any recommendation on the size?

How are temps? Do not change the motor for a 580l. It wont push that big boat. You should run 12s2p on that motor.

Not sure of temps. We need to get the equipment to measure that data.

Thanks for your replies.

[AlanN]

You will need to be near 70mm dia. Not sure if your motor will spin it. Best to get a few different props and just start to try them. 25C cells are bit weak for this type of setup.

[Brushless01]

Try around 65mm