Which motor is better?

[MrUnlimited]

http://www.horracing.com/product_inf...qrg3rvcp39agj4 or http://www.skyrc.com/index.php?route...product_id=139 for my MHZ 1380 cat? The hor motors gives more watts for a smaller motor while the Proteus motors have a longer rotor. I am confused

[Jason4636]

I haven't ran either one of these motors. But from what I read, I would say the Protues is a better motor. How the protues says its 112mm long, take into consideration that the back 10-15mm will be for the plugs and wire. If your not set on 8s. You could try the SkyRC 528's, the same maker of the protues. But the 528 is the same size and KV as the CC 2028. A guy on another forum told me he tore down a 528 and a 2028, and compaired them. He said they looked like they was made in the same factory. Thats just what I heard, as I haven't tore either one down. But on a 528 you could run 10s. I'm going to be running a pair of 528's in a 56" mono.

[MrUnlimited]

Thanks Jason,

I want to run 2x 10s lipo in my boat. I want to use 50size motors since it is a large hull.
578512_4166815605903_1165773175_n.jpg

[Jason4636]

The 528's is the exact same size as the Protues 524's. You just cant switch between the w and d wind. They have a set KV of 780kv.

http://www.skyrc.com/index.php?route=product/product&path=39_48&product_id=141

[Old Sloppy]

how old (young) is that person in the pix ?

I ask because either the boat is really big or the person is really small.

I own a 60" Cat myself and I didn't realize it was that big, or is your Cat bigger ?

I run 9s Lipo in my Cat (see my sig).

You might "get away with" 10s for a short time, but you will have heat build up problems and short bearing life issues.


Harry

[Jason4636]

I think his cat is a 54" hull

[MrUnlimited]

Yep, it is a 54 inch hull. Harry, my daughter is 9 years now.

[keithbradley]

Any of those motors would be plenty of power...
You are comparing ratings from different manufacturers though. HOR motors are all rated much higher than what they would realistically handle.

[MrUnlimited]

Keith,

have you tested the Proteus motors and how do they perform?

[Alfa Spirit]

Don' t be afraid by RPM, with 2 x 10S you can use 900/1000kV especially with a catamaran.
I have a 50" deep vee, the twin setup will be 2 x 8S with 1000kV motors. may be SSS 5684 1000kV 6 poles motors. Those motors are made by TP Power

Powerboat P1 8.jpg!

[keithbradley]

Keith,

have you tested the Proteus motors and how do they perform?

Yes, they perform quite well for the price. My favorite setup with the Proteus motors was actually a pair of 524-3T in y configuration for 600kv. I ran them on 14s lipo and the results were good. The low kv/high voltage allowed for a reasonable current draw at a high power level.

The "Beast" 528 motors and the castle 2028 motors are capable of pulling a bit more wattage in all out testing (The Proteus motors pulled about 10k watts max and the larger 528/2028 pulled a bit more...both of these were max wattage ratings, not constant). The Proteus motors are acccurately and responsibly rated at a little under 7k watts and 30,000RPM in my opinion.

I also did RPM tests on these motors and the RPM limit should be respected. Keep in mind though, that LOADED RPM is all that we really care about. You should be able to run the 528s on 10s without issue. I ran mine on 11s and didn't have any problems other than a blowover with an expensive boat.

[MrUnlimited]

S0 what is the best motor for my 54inch cat? 730kv or 910kv and how many lipo's ould you suggest cause am I able to run 10s on the 910kv?

[keithbradley]

S0 what is the best motor for my 54inch cat? 730kv or 910kv and how many lipo's ould you suggest cause am I able to run 10s on the 910kv?

If you're comparing Proteus motors at those kv, you're comparing two different size motors.

I don't think you need that big of motor for this hull so I guess I would go with the smaller one to keep weight down.
You can prop different RPMs to run comparable speeds.

[MrUnlimited]

Any suggestion Keith? 40 size motor? Leopard's maybe?

[keithbradley]

Any suggestion Keith? 40 size motor? Leopard's maybe?

When I said "I don't think you need that big of motor", I didn't mean these wouldn't work...I see how it may have sounded like that now.
The proteus motors would work just fine, I just meant you didn't need the larger of the two...Leopard 5692s would work well, Neu 2215s would work well, etc. I'm building a hull this size over the winter and I will be running Neu 15 series motors in an attempt to do something different. Many people have ran the 56mm + size motors in these hull with good results though.