Neu 1512 2.5 Vs 1515 1Y

[hobbimaster]

This might have been discussed somewhere here before, but I tried both Neu motors out today, and a Novak 4.5 system. I used a MGM 16018 on 14 EP4600's for the neu's. First I tried out a Novak 4.5 system, I have no way to tell how fast it is, but it pulls pretty good, a bit flat in the middle, and seems to have a screaming top end. Gearing was a little crazy 12/68 to keep it relatively warm. Not too bad for a $270 system, as long as a 5mm shaft comes out soon.
Next, second motor was the 1512 and right off the bat it has strong midrange, decent top end geared at 22/68. The strange thing is that the brakes were extemely weak, and it would continue to roll forever. I tried making setting changes with a programming card, but still no changes. Maybe the PC software will allow more changes, wont know till I get it in the mail.
Finally a 1515 1y, this motor flat out hauls the mail with 20/68 gearing. Good power everywhere, it cetainly doesnt disappoint. The odd thing is that it was the complete opposite of the 1512, brakes were extremely strong, and it did act as if drag braking worked. I'm wondering if the 1512 and 1515 winding make this difference (Delta, wye).