How much power for x646

[jkr]

Hello.
How much power i need to spin a x646?

[Fluid]

There is no way to answer your question without more information. What size and exact type of hull? What type of running - oval racing, SAW, sport? What speeds are you looking for? This prop can be used on 4S, 6S, 8S and 10S applications.



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[jkr]

Ok.
40'' mono 12s sport running.

[Make-a-Wake]

12s for "sport running"..........?........wow, if that's correct you need a kv of 800 or less for sure.........

[kendt]

Wow 12s sport ...lol thats heafty. I have a 32 in mono on 6s. I have used a 646 with both turnigy 4074 and leopard 4082. Both were able to handle it quite well. Mine was modded a bit so it makes some difference. I thin the blades out on my props as much as possible.

[jkr]

I am considering for the:
http://www.hobbyking.com/hobbyking/s...20mm_EDF_.html

[siberianhusky]

Is that the prop I borrowed for a couple runs Ken? If so it was being run on a LSH with a Geico motor and Swordfish 120, temps were fine on everything. Water was almost ice cold though, really!
LOL same prop run in a variety of different setups.

[kendt]

That motor should have tones of power. You could likely get two water jackets on that sucker...lol. I was looking at the other version of that one for my 6s rigger.

[Make-a-Wake]

I have caught myself eyeing that motor several times...................it's the size of a Neu 1524 and should pack a pretty good punch. I bet a Neu 1527 jacket would fit it......................should turn that 646 with no problem.

[jkr]

I have a leo 4068 water jacket.
I will run with frsky telemetry for temps and gps so ineed a litle space for the sensor.

[Fluid]

An x648 is 'way too small for any 40" mono. It will not efficiently transfer the motor's power to the water. You will need a minimum 55mm diameter prop for that hull with 12S power.

An 40mm 850 Kv motor on 12S is not a good idea. Amp draw will be high even with that tiny prop, and power delivery will be low. For 12S a Leo 5692 or Castle 2028 are far more appropriate.


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[Make-a-Wake]

The 39" mono in my signature hit 55 with only an x447 and 59 with an x450.

[jkr]

So it would be better to choose a leo 4082 1600kv 6s 2p?

[kendt]

I have that in my mono and it is very fast. It depends on how fast you want to be. 40 is a good size boat. If you want to really rock it I could sell you my 1717. It would be perfect for that boat on 6s.The problem with 12s is you need a very expensive esc to handle the voltage where as lots of good ones around for 6s that arent as scary price wise.

[jkr]

I have a cc240hv for 12s a t180 for 6s and a cc1717.
I don't want to use the cc1717.
I want to keep the weight to the bottom of the hull for self righting.