Upgrading the Zonda Cat with new Motors

[Mecka1990]

cant, i woud but i cant get rid of them, the whole boat is build squaredrived ;( everything filled with epoxy, stinger brass tube, brasstube holder here you can see the boat, jan from kintec sells it to: http://kintecracing.com/Zonda_Cat.html

[Mecka1990]

i think about 2000-2200 kv because its a twindrive and one motor helps the other, i will pull less amps then a singledrive, 5s lipos (18,5v) for a 20v motor is ok i think, 200 amps plus ish x2 will carry that all, going for 45mm to 48mm props (checking temps first with 45mm) i dont want 10 minutes drivetime, i just want to see whats the max speed on this hull with this setup with a 40mm motor :)

[Heaving Earth]

Dude, get rid of those square drives

[Heaving Earth]

Twin 4082 might be a bit much. Maybe go for 4074

I shouldn't say this really because what's more important is what kv you use, what cell count, which prop etc... 4082 would be fine

[Mecka1990]

im still searching for a 1/4 flexcable with 3/16 squaredrive end, i dont like the teflon drive whats in it, it makes me sick, every month changing the teflon liner, and its not easy if you only got 20mm room to fit the new in it

[Mecka1990]

Regardless, my point is, don't limit yourself to a d wind motor

i wont, just readet it, its wayne wich direction the motors turns, its still forward, a d wind is better for forward and back, like a car ...

[Mecka1990]

what you mean with much? haha
i want a saw setup like iridebikes247 said, but scared of overheating. the esc´s shoud not got any problems with the motors and lipos, so only the motors make me scared, i dont think that i will pull more then 110 amps with this build

[Heaving Earth]

Regardless, my point is, don't limit yourself to a d wind motor

[Heaving Earth]

Twin 4082 might be a bit much. Maybe go for 4074

[Mecka1990]

so i think the best with 5s lipos will be:

Model: LBP4082
Max Amps: 140A
Max V: 20V
Max Power: 3500W
Kv: 2200kv
ResistancE: 0.006
No-load -Current(15V): 3,9A
Mounting Hole: 7mm

[Heaving Earth]

I believe which ever direction is set to forward via the esc is gonna be the direction the motor performs its best regardless of which direction that may be. In different applications forward is gonna be different rotation based on what's needed. I'm not 100% sure tho

[iridebikes247]

x447 with leopard 4082 2000kv motors....you'll go fast

Ok this is a setup but really a SAW one the boat will haul. I run a boat the same size with leopard 4082 1600kv twin motors, x447s on 5s usually. The boat runs upper 60s and is still "fun." By that I mean im not swimming after it often, it can take some chop and the power doesn't overwhelm the boat in most situations. That boat is light doesn't need twin 4092s. My boat electronics stay cool and I get very good run time with the 1600kvs.

[Mecka1990]

or is it the same when i change one of the 3 wires on the motor.....is it still forward?

[Mecka1990]

Motor wind type comments from the chief engineer at Aveox:

"At Aveox, we have essentially deemed the Deltas as secondary to Wye winds in any application, except where a very high degree of uniformity in both directions is very important. Things like robots that move in both directions equally put up with the efficiency losses. Since the motors are very insensitive to timing changes (unlike the Wye winds), you don't have great performance in one direction, and poor in another(without adjusting the timing). You have good performance in both. (but it is not worth the losses in a model).
So basically the Wye will spool up faster and reach its top RPM a bit faster than the Delta wound motor. The Delta wound motor also consumes more amperage than the Wye motor. If you want a hi-torque motor, the Wye-wind will let you do it with few turns. If you want speed, the Delta motor will let you do it without having to use difficult, thick wire or mess with parallel strands."
Posted by fluid in another thread

so a Y woud be better, but if he said both directions, a d wind woud be better for a cat, because a Y is better for one direction, and i drive both because one is counter rotating... maybe im wrong now..^^

[Heaving Earth]

Motor wind type comments from the chief engineer at Aveox:

"At Aveox, we have essentially deemed the Deltas as secondary to Wye winds in any application, except where a very high degree of uniformity in both directions is very important. Things like robots that move in both directions equally put up with the efficiency losses. Since the motors are very insensitive to timing changes (unlike the Wye winds), you don't have great performance in one direction, and poor in another(without adjusting the timing). You have good performance in both. (but it is not worth the losses in a model).
So basically the Wye will spool up faster and reach its top RPM a bit faster than the Delta wound motor. The Delta wound motor also consumes more amperage than the Wye motor. If you want a hi-torque motor, the Wye-wind will let you do it with few turns. If you want speed, the Delta motor will let you do it without having to use difficult, thick wire or mess with parallel strands."
Posted by fluid in another thread