72 inch ExpressCraft V haul build

[Turbostang434]

Trying to figure out what kv motor to run. I want to use the castle xlx2 ESC. So that's 8s. I'm going with a TP 5680 motor. Not built for racing but I want it to be fast. 70 to 80 mph. Need help with kv and prop size.

[Fluid]

That speed is pretty unrealistic with a six-foot hull on 8S with that ESC. The weight and drag are considerably more that what is seen on the more common three to four-foot long boats. Few here have experience with big monos of that size, perhaps some will respond.






.

[koen]

for this hull you need some serious power, with a tp 5680 you need a twin setup and for a single setup a lehner 30100 is the only motor i can think of ,and all these setup's on 12s and big esc's

[fweasel]

Anything is possible with time and money. You're going to need some more money... I would imagine you'll need to run 10S at a minimum, possibly 12S. Even then, run times will be short unless you run a second set of packs in parallel.

Check out this build on a 70" CRC single motor V-bottom hull.
https://forums.offshoreelectrics.com...light=wheelman

[Turbostang434]

I am going with 2 5680. 300a esc's I know it's not going to be cheap. I have always wanted a really big rc boat. All my other boats are under 50 inches. 750kv?? On 12s?

[koen]

yea 600 to 750kv is ok with 12s ,then the surge for the best props start(i preferrer for a twin ABC props maybe you can contact Chris Hoffman for advice or Steve Vaccaro OSE)

[Turbostang434]

I have a few of Chris's props. I was trying to post a picture from the TP site to show the kv I can order.

[koen]

On the website tppower.de you can find what you want and if you live in the US you can order it there but that german website give the best tp info

[Turbostang434]

I live in the US in Florida. I'll check out the German site. I want to build a awesome boat. Should I do 4inch trim tabs?

[koen]

those tabs from speedmaster look very good

[Turbostang434]

I really like them. I'm doing all speed master hardware. I'm looking forward to painting this boat. All my boats have custom paint. That's what I do for a living. Going to go all out on this big haul.

[Turbostang434]

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