Suggestions for a twin 12000w 50K RPM Motor with 400amp ESC

[Shawn]

Hey just seeing if anyone has any optional suggestions for this twin motor set-up:


TP 12000w 50K RPM motor
400amp Flier ESC

Right now we are running 2 6S lipo per motor/esc combo.
The ESCs are perhaps the weakest link.

We are essentially looking for around 32+ hp at 50K RPM

Thanks!

[dmitry100]

So, 12s per motor right? Go with 14s if current is such a concern then...

Flier ESC though? Not sure about that one. Probably better off with SF300 Lite or MGM 400... you can get them at OSE or Keithbradleyboats.com

[Shawn]

Ok cool I really appreciate the info!

Yeah 12s per motor right now. So by raising the current, that would actually lighten the load on the ESCs?

[dmitry100]

Not raising the current. Increasing voltage decreases current... but thats only if you lower your KV, too.
But 12s is most likely fine though... depending on how big of a hull you are going to run though.... current might not even be an issue.

Anyways, this is sort of pointless as I don't know what kind of hull you have and what kind of props you plan on running, etc. The more info the better...

[srislash]

Are you still doing the hydro foil thing Shawn? If so it is probably fine once up but getting there takes some oomph

[Shawn]

Thanks guys! Yeah Shawn we are up and running, I'll share a video. Our electronics setup has been fantastic with immense power and thrust. Just looking for any possible tweaks.

http://youtu.be/mQ_whL3ctqw

[spectre]

Great video footage, and thats a cool boat you have.

[srislash]

So you are using surface foils correct? She sure looks good on the water. It should be great 'all condition' running. You've done well with 'pops' platform.

So are you getting good run times? There should be little drag on the system I would imagine.

[Shawn]

Thanks spectre!

Yeah you got it right on the foils and decent run times, around 15 min average, not full throttle the whole time of course. We're getting there, everyone on the OSE forums have been very helpful, I appreciate it!

My dad is the real brains behind it all, I just help with the web stuff. Heh!

[srislash]

Ok do back to the original question, are you guys burning up ESC's? Or are you looking for smaller/lighter? And which TP motor is 12,000 watts and turning 50K? Also from the vid I would say that hull is a healthy size is it not?

[iridebikes247]

The 5850 is advertised at 50k rpm 12,000 watts. It will make the wattage in a burst (never sustained) but will never spin 50K loaded. With this motor don't plan on over 35K LOADED, rotor will likely explode over that. Some say it won't but I've nuked 3 of them.

If running a big can motor like this 30-33k rpm is ok. If you need a powerful motor with rpm thats pretty efficient consider the TP 4070 with an HV setup it should be pretty good but more information is needed!

[Shawn]

Thanks for the info Mike!

In the beginning we went through a series of motors, batteries and ESCs but the set-up we have now has been more reliable. The boat is fairly large, but the power is there for sure. Since it's a 1/8 scale prototype for a 50 foot boat, it's quite a sight to see! :)

We're hoping to really dial in the electrical system reliability so we can demo it whenever called upon.

[srislash]

I would say the Swordfish Lite then Shawn. Burst amps of 380 with steady draw of 300. I just got a pair, they are very similar size wise to my Flier 300's. I could get a pic of them for comparison if you like.