WOW, Thanks Castle and RC-Monster, MMM V2

[Sammus]

I think thats one way of looking at it. More winds = longer length of wire = more resistance = less current at a given voltage. I think that isn't really valid thought because in an electric motor there are other influences from the rotating magnetic field etc, so the resistance of the winds dont follow ohms law like that.

The way I look at it (which could well be wrong) is that firstly, more current = more heat. Then recalling some high school physics classes, reason the following: Say to you want the power to wheelie at a given speed, that comes down to requiring a certain amount of torque at a certain rpm. To attain that torque you need to draw a certain amount of current.. (torque is proportional to current through the winds).

Torque is also proportional to the number of winds, so with more winds, you need higher V to get to your rpm, but you dont draw as much current = less heat.

[hemiblas]

Ok, I think I get it now. The heat generated from within the motor is the current running through the winds to create the magnetic field. So a 10XL on 6S not only runs the speed controller cooler, but the motor runs cooler as well. So an 8XL geared up really wont give less heat than a 7xl geared down if you are running the same voltage because the current will be approximately the same.

[hemiblas]

Looks like mine gave out on the second run. I will join the ranks of those returning their controllers.

Originally Posted by JeffEmbracedDC

Were there any actual changes between the 1st and 2nd batches of the V2?

-Jeff

None.

[Sammus]

How do you know? Can't just claim that with no evidence...

Well I no "evidence" but when I was on the phone with Thomas (from Castle) I had asked him if there were any changes, he said no.

Also, you can kind of tell that Castle doesn't know why it's happening, and they can't fix it if they don't know what to fix.

[Sammus]

Thomas told me that under any circumstances the HV110 phoenix controller should never be used for land vehicles - but I've read a million people (even patrick or joe i think) on here say they work fine.

But yeah, I reckon there is probably no difference, but you can't say there isn't. After all, there is plenty of differences between V1 and V2, but seemingly no difference in how many failures there are, one could say that means they didnt change anything, but they did - they just didnt fix the problem :P