Quote:
Originally Posted by johnrobholmes
That is great news! Looks like I should be testing my crawler motors to a Y termination too.
As for the wind resistance, each wind will have lower resistance because of the larger amount of copper and lower wind. The phase resistance in comparison to a D termination would be higher of course. The combination of changing wind count, termination, and copper netted you better startups, better acceleration, and a higher top speed? I would say either your efficiency went up or your amp draw did, maybe both. Got any old data logging from the previous setup?
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I have read on the Croco site and other sites, that you want the wind resistence to be as low as you can get it without resect to how many turns it is. That is a goal with motor winding.
Manufacturers make compromises at the cost of effeciency with motors. Small wire is used because it is easier to work with. The larger wire is harder to work with but produces a wind that has a greater Cross Sectional Area. Less Resistence.
This Raises the Power Handling ability and efficiency.
I also feel like they steer away from the Wye wind because of the added termination point that can create problems if not done correctly.
They settled on a Delta termination, because in their testing with a prop, they are only measuring thrust at top speed and total amp draw.
They don't start the motor under a load at all compared to a Monster Truck. The amp draw doesn't come up hardly at all until some rpm's come on to the prop and make the load.
This makes the Delta wind easier and more profitable for them.
I have reached a point where I need a data logger. I have a brand new factory delta wind in the 3530. It would be VERY interesting, to collect some data from several runs with this custom wind. Then put the factory motor back in and collect some more data. Comparing that data would tell alot of things I'm sure. The difference is enough to see for sure. It performs alot better.
I put the factory wind on 6S one time and blew the transmission on the first run. I'm tempted to bump up to 5S on the custom wind, but I think that would be enough to make the transmission go Poof. I'll try to get some video soon.
The new E maxx should be hitting the market anytime. One of them has my name on it. I'll do this conversion with it. A transmission that can handle 2 1/2 times the torque of the original? Let's make that thing dance! LOL