What prop should I use?

[Mph621]

Hello new to rc boats. I have a Dumas atlas van lines hydro 40". I am putting a leopard 5698 1100 kv sword fish 300 pro and octura 450/3 and running it on 8s. Any other suggestions on prop looking for 25 mph or better?

[Mph621]

Went with a octura 450 3 blade? Hope that was a good choice

[Fluid]

That should be a safe prop to use, the big Leopard should spin it easily. It may be small for the big hull but only time will tell. Is this a straight shaft or flex cable?


.

[Mph621]

That should be a safe prop to use, the big Leopard should spin it easily. It may be small for the big hull but only time will tell. Is this a straight shaft or flex cable?


.

It is a .187 Flex cable

[Mph621]

I am really new to all this is a piano wire shaft better should I have gone with a .250 diameter flex? I just know the electronics I'm putting in this boat are huge and bigger than anything I have ever messed with in rc cars!