Project Mean Machine - Castle 1717 on 6s

[jingalls007]

Sounds like a plan! Think I have a 450/3 so can inch closer to it.

I'm also thinking I'm going to start using the 6s long lipos for 6s2p.

What's the kv on your 1717?

[FighterCat57]

What's the kv on your 1717?

AFAIK, they are all 1580kv.

[jingalls007]

22.2v X 1580 = 35076 RPM's.. I retract my earlier statement of the X452/3. That's wayyyy too much prop for those rpm's. X437/3, m440 might be too much for your setup. 5s seems a bit safer and more manageable, just my opinion.

[FighterCat57]

22.2v X 1580 = 35076 RPM's.. I retract my earlier statement of the X452/3. That's wayyyy too much prop for those rpm's. X437/3, m440 might be too much for your setup. 5s seems a bit safer and more manageable, just my opinion.

I'm already running the m447 and it's got room for a bit more prop. Pulling about 130 amps peak on the tell tale amp meter.

[jingalls007]

I'm already running the m447 and it's got room for a bit more prop. Pulling about 130 amps peak on the tell tale amp meter.

That's great!! I didn't want to suggest a prop that seemed to be too far out for your setup. Sounds like you got a handle on it. What speeds are you getting? how are temps?

[FighterCat57]

That's great!! I didn't want to suggest a prop that seemed to be too far out for your setup. Sounds like you got a handle on it. What speeds are you getting? how are temps?

Haven't GPS'd but it looks like low 50's. The temps are low enough I can hold the boat up by the motor, but haven't run it a full charge yet.

Still have to figure out why the prop shaft seized into the bushing and get it apart. It's stuck in the strut.

[jingalls007]

I'm already running the m447 and it's got room for a bit more prop. Pulling about 130 amps peak on the tell tale amp meter.

Are you running the 447 on 5s or 6?

[Rumdog]

The 1716 can handle it. Especially in a mean machine!

[FighterCat57]

Are you running the 447 on 5s or 6?

6s 1p 5k 45c

[jingalls007]

and only 130 amps.. awesome!

[FighterCat57]

and only 130 amps.. awesome!

Yeah, I'll hook up the eagle tree when I get a chance and get some solid data, but that's what the tell tale was reading after the last run. (not the video run, the run before it)

[rawsonreyes]

nice to the meanmachine still in the game i have just setup one with a suppo 1760kv outrunner have not tested it yet hope to get 50 plus 4s setup mod 447 prop.

[millzee]

apart from the obvious "slowing down" what would the other effects be running 4s in your system? I'm in two minds weather to build mine the same as yours and hopfully swap the lipo's from 6s to 4s so I can teach my kids how to drive or just get a smaller motor and try building a slow boat with reliablity

[FighterCat57]

apart from the obvious "slowing down" what would the other effects be running 4s in your system? I'm in two minds weather to build mine the same as yours and hopfully swap the lipo's from 6s to 4s so I can teach my kids how to drive or just get a smaller motor and try building a slow boat with reliablity

This would be a great trainer on 4s. Slowing the RPM down will greatly decrease the amp load so expect some good run times. Also less amp draw = less heat. Expect a smooth running, cool and nimble boat. This thing turns amazingly well.

That reminds me. I need to figure out how to get the cable apart from the bushing.

[sailr]

actually, as you go up in voltage, amps come DOWN. So 4S will draw more amps than 6S. The motor is trying to achieve it's watt rating so if you reduce the volts, the amps have to go up. The highest amp eaters are 2S setups.

For example, you can actually run a NEU 1527 on 10S using only a 120A esc!