Setups

[NitroVal]

Here's the new (pending) setup. Just waiting on Venom to get a new damned flexshaft sent to me..

Dual Etti 150A ESCs
Etti 35V Cap Banks
Neu 5S 4000mah batts
Stock Venom motors (for now)
Octura x442 props
8 ga. battery wire w/6mm bullets

Gonna shoot for 60mph with a light trigger finger (try not to melt anything before then).
After that 60mph mark, I'm gonna see what these motors are made of (70mph??)

[RCprince]

51,000 rpms+ sounds like a recipe for death to me. in addition to a 380 motor pushing a 442 prop! personally, I wouldn't subject 300 bucks worth of esc's to that, but then again, without adventurers where would we be? Just my 1 cent.

[Brushless55]

Dang, on 5s those motors will be smokin!
well uh hopefully not...

good luck!

[NitroVal]

EH, Oh well if she blows.. Its just a toy.
Everyone thought the the first nuclear bomb would ignite the whole atmosphere, and now they control the world's fears...

[OldSoldier99]

I just looked it up on the Hobby King website. You are correct...the constant rating is 30C and burst is 40C. If the ratings are accurate, that should be enough power to run my unorthodox setup. I'm begining to suspect Fluid is right and my modifications are suspect. I'll make some changes and report back later.

By the way, have you guys already fought the Zippy vs. MaxAmps war on this forum? I've seen that war fought on some of the truck forums.

Thanks again to all.
OldSoldier

OK...here's what I tried over the weekend:

First I cut my connecting wires to reduce the amount of wire (spelled resistance) that was introduced with my modifications (Fluid's suggestion). The 2s Zippy FlightMax 5000s in series ran the boat well for about 2 minutes with wicked fast speed. After that, I suspect the ESCs dropped into low voltage mode.

I then swapped in a pair of ThunderPower 3s 5000 40C (had to tape the hatch down because of the tight fit). I ran the pair of 3s batteries in parallel. The EKOS performed so well, that I'm begining to think the 4s batteries I ordered are over-kill....but I can't wait to try them

[Ub Hauled]

EH, Oh well if she blows.. Its just a toy.
Everyone thought the the first nuclear bomb would ignite the whole atmosphere, and now they control the world's fears...

they are the world's fears.

[Brushless55]

and those who made the bomb had no Idea what would happen!
high kv brushless motors with lots of volts = hmmmm

[Chris Nicastro]

I suggest using the 32mm 1.4 pitch props in aluminum and even then your going to overload the motors for sure on 5S. A short burst and long pause to control temps might work but you should consider swapping out the motors for lower KV or longer cans or both.

[Brushless55]

A 5s SAW run could be plausable....
and fast!

[OldSoldier99]

A 5s SAW run could be plausable....
and fast!

SAW run

[NitroVal]

Got the flexshafts in today, so Im gonna work feverishly tomorrow morning to get everything back together. Gotta go take down a lightning struck tree at noon, so I think I'll be busy for the rest of the week. Hopefully some test runs on the weekend

[chummer]

SAW run

Straighaways

[Brushless55]

In other words
One really fast run

[OldSoldier99]

4s run

All, I just bought a pair of Zippy FlightMax 4s 5000s. If you remove the foam from the canopy they just barely fit. You will have to tape the canopy down (which I do anyway). The boat runs well and wicked fast! Unfortunately, I have not had a chance to get a speed run with GPS (my daughter needed my GPS). My wife just bought me a new GPS today so I'm back in business (bless her heart! Guess I'll keep her!) Weather is bad on east coast this weekend, but I might get a chance to put her in the water Sunday after church (the EKOS...not the wife). I'm amazed at how stable the boat is at 4s speed!! Anyone else got numbers???

[NitroVal]

Just finished mine (5S) and Im gonna dump her in the lake tomorrow for some test runs..
http://forums.offshoreelectrics.com/...595#post132595