Quark VS. MGM?

[BrianG]

I would think the 160 should be more than enough, especially since MGMs tend to stay cooler...

[Sower]

Originally Posted by BrianG

I would think the 160 should be more than enough, especially since MGMs tend to stay cooler...

You think? Even with my higher kv motor (2700)? I know the MGM can pull a 200 amp spike for 5 seconds, but I just get nervous with my past experience of a company saying they have certain specs and then not performing.

[BrianG]

Originally Posted by Sower

You think? Even with my higher kv motor (2700)? I know the MGM can pull a 200 amp spike for 5 seconds, but I just get nervous with my past experience of a company saying they have certain specs and then not performing.

The motor kv is only part of the story as much of the current draw depends on gearing, weight, tire size, rolling resistance, etc. But, if you are currently pulling 200A @ 5s, then maybe a higher current setup is needed. I was just trying to save you a few bucks.

I understand your concern though. I usually try to over-engineer my setups so the ESC has a higher current rating than I think I will need. You may never need the amperage rating, but it's nice to be there just in case. Plus, higher current ESC means more FETs, means less overall ESC output resistance (total Rdson), means less heat for a given current. And we can't forget that these FETs have a temperature derating curve, so it's better to keep temps as low as possible.

As far as contacting Mike, I would email and wait for a response. I know it can take some time, but he gets a TON of emails a day and tries to get to them FIFO (first in, first out). Unless he has email notifications when he receives a PM, the only time he'll see those is if he logs in - and you've seen how many times he does that!

[Sower]

Thanks for the info Brian. I guess I don't really know how many amps I'm pulling and that's part of the problem. How can I tell? My setup is actually a 4s (instead of 5s) Flightpower 25C 5000, CRT pro truggy w/Crimefighters, Neu 1515 . . . and whatever ESC I decide. And my gearing is stock in the diffs, but the center is 10/51. Is there any way I (meaning you :) ) can guestimate the amp draw?

Oh, and by the way, I emailed Mike last night and he replied. He said he thought he had replied to one PM so I think there was just a problem with the PMs. But he said he has the MGM's on order. Not sure how long it takes them to arrive though.