Castle Neu Motor winds

[SpEEdyBL]

I would like to know what winds will eventually be released to run with the MMM.

I request that a 1512 1.5D be made so I can bash fast in a buggy without buying a new charger and battery for 5s or 6s. I'm sure other people would like other winds to be made as well so post your requests. Hopefully castle will see this so we don't have to wait too long while only the 1Y motors are on the shelves by themselves. I really don't want to spend $240 on a motor that has holes that you have to cover up and wires that don't bend.

I also would like some input on wye vs. delta in terms of efficiency. Or if that was the reason why castle decided to go with the wye wound motors first. Maybe Patrick can answer that question.

[Happywing]

You're going to run a 1512 1.5d on 5s or 6s? That's just crazy! Unless you're just doing speed runs, that setup will be uncontrollable. You'd be better off with the 1515 1y on 5s.

[Arct1k]

Castle Neu are 1512 2600 (rated to 5s) and 1515 2200 (rated to 6s) initially - But i would be looking for slower a 1515 2.5D 1650 would be nice.

1515/2.5d for sure. 30-35k!

[Sammus]

I thought castle were against delta winds for some reason? I'd run exclusively Y winds if I had the $ to fork out on motors that offered a choice :P

[JeffEmbracedDC]

Originally Posted by Sammus

I thought castle were against delta winds for some reason? I'd run exclusively Y winds if I had the $ to fork out on motors that offered a choice :P

How come? What's the benefit of a Y over a Delta?

-Jeff

[Sammus]

Apparently its more efficient. Not sure of the physics behind it exactly, but I know that with a wye wind only 2 coils are energized at a given time, with a delta wind all 3 are - not a real strong basis for my claim I guess, just a gut feeling plus some 'I've read something like it somewhere' kind of things in the back of my head telling me to think it :p

[BrianG]

Here's some reading for ya!

http://www.rc-monster.com/forum/showthread.php?t=7130

http://www.rc-monster.com/forum/showthread.php?t=5976

[VintageMA]

Regarding the CC motors: I think the winds that CC is recommending are just too high for the # of lipo S. They are pushing every configuration right to the edge of the motor's rpm limit in what they recommend.

I don't really think that is smart as it it going to cause a lot of inexperienced people a lot of heat issues.

When I had gotten a CC 36xx motor and had heat issues I called CC tech and they told me to just keep gearing down till the heat problem went away - and that I couldn't even gear with the stock gearing of the vehicle. This was a 1/10 on-road and with the gearing they wanted me to use it would've just been as slow as stock BL motor it came with which was a Novak SS5800 (a very mild BL motor). Anyway - within a few runs I manage to temp the motor up to about 250* and it ended up in the garbage - total piece of horrible garbage junk motor. (Some people doing okay with them, but I would never buy the garbage CC junk 36xx motors ever again).

I am now specing out my purchases on Neu motors for about 38-40K rpm based on nominal 3.7v/cell rating. I feel this gives a nice balance of slightly higher than nitro motor top rpms with the ability to keep around the stock nitro gearing and be just a little faster without any heat problems. This also gives a little headroom to gear down for faster speeds as well.

If all you want to do is speed runs by all means go for the faster setups.

********************

As far as the Y-winds go - after doing a lot of reading my biggest question is how do we know which direction of rotation is the more efficient? Will it always be clockwise? I really don't mind flipping my fr/rr diffs around if necessary, but would just like to know to proper rotational direction.

[BrianG]

yeah, many people don't realize that faster spinning motors are ok, as long as you are able to gear down enough, and some setups definitely are limited to how far you can go. It does take a bit of planning.

I would assume the most efficient operation would be the ESC going forwards since the timing would be optimized for best performance in that mode. Whether this means the motor is spinning one way or another is irrelevant.

[Pdelcast]

Originally Posted by VintageMA

When I had gotten a CC 36xx motor and had heat issues I called CC tech and they told me to just keep gearing down till the heat problem went away - and that I couldn't even gear with the stock gearing of the vehicle. This was a 1/10 on-road and with the gearing they wanted me to use it would've just been as slow as stock BL motor it came with which was a Novak SS5800 (a very mild BL motor). Anyway - within a few runs I manage to temp the motor up to about 250* and it ended up in the garbage - total piece of horrible garbage junk motor. (Some people doing okay with them, but I would never buy the garbage CC junk 36xx motors ever again).

Huh? What?

That's not right -- any of the CM36 motors will DESTROY an SS5800. There must have been something wrong with the motor you had (shorted winding probably...)

We run 1/10 onroad at over 70mph with CM36 motors, and they stay really cool. (CM36-7700s and CM36-6900s)

Patrick

[Arct1k]

5/6s take those motors to about 48k RPM which is under the 60k they are rated to assuming the are similar spec to Neu...

I would agree though they I'd stick to max 4/5s on them...

[Pdelcast]

Originally Posted by VintageMA

As far as the Y-winds go - after doing a lot of reading my biggest question is how do we know which direction of rotation is the more efficient? Will it always be clockwise? I really don't mind flipping my fr/rr diffs around if necessary, but would just like to know to proper rotational direction.

Either direction of rotation is just as efficient as the other with a sensorless controller. With sensors, there is only one efficient direction.

[BrianG]

I've had pretty good luck with the CM36 motors. The 4600 in my e-Jato runs perfectly with cool temps on 2s even geared high. And I'm running 10 NiMH cells on the 5700 in my Slash, but it does get warm (yeah, I know this isn't good, but it's just for the time being ). The only trouble I have with the CM36 motor is the 4600 I'm using in my CRT.5; geared low, things get too hot for my liking (~160-170*F). It's probably technically "ok", but everything else I have runs no higher than 140-150*F.

[Pdelcast]

Forgot to mention

All of the Castle/Neu motors will be Y winds. We decided to optimize the magnet for the Y wind, and not use a compromise to allow both Y and D winds.

Y winds are a little tiny bit more efficient than D winds.