Quote:
Originally Posted by ilpufxit
I finally got a chance to run a side by side comparison of motors.
My local track opened yesterday. I ran a full pack in my 8ight-T with a 70mm 2000 kv Medusa. It came off the track at 190F, the MMM was about 110F and the Zippy FlightMax 5000 pack was about 100F.
Same everything, swap in the identical but charged pack, now with Neu 1515 2.5d. The run was longer by several laps but I wasn't timing it. Came off the track at 110F, MMM was about 80F and the Zippy was 100F.
The Medusa gives more torque and higher top speeds (based on my impression only) but clearly sacrifices a lot of efficiency to heat. So far, it seems to handle the heat though, I've run it up to 190F, even 200F a few times with no perceptible loss of performance.
Now that I've seen the difference for myself, I'm fully sold on the value of the Neu motors. Not cheap, but worth the extra. One thing I would mention is that if you're running a steel spur gear, you can expect to need a new front armature bearing periodically. Do yourself a favour and order a couple before you need them.
I'm going to get back to work now.
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This isn't really the best comparisson! Testing a 2000kv motor with the same setup as a 1650kv motor? Obviously the 2000kv is going to run hotter, If you had adjusted the gearing to be for the same speed then it would have been a better test.
Quote:
Originally Posted by SpEEdyBL
For me its hard to justify getting a motor with open vents and stiff/fragile wires sticking out of the back end in addition to spending the $200. It's impressive how long we have to wait in order to get quality and practicality in the same package, given that many are already willing to pay big $$ for a motor, whose exterior design is not even best suited for cars. The castle-neu motors/tekno-neu/tekin rx8 motors are a step in the right direction, but also a step in the other direction, due their mass-produced quality.
Also, I have not tried a genuine neu but, some say the castle-neu motors are just as good, others say they are worse, and I have seen reports of both good and bad temps for both motors.
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There is an error I noticed here and just want to clarify that the Tekno Neus are not a mass produced motor. They are still a genuine hand wound Neu, they just have a different can that is sealed and has bigger bearings