low end motors vs high end motors

[BrianG]

That would be tough to do. You'd have to repeat the run EXACTLY the same way to be of any statistical use. It would probably be easier to hook the motors to a constant mechanical load and then time how long each runs before the pack dies. Then, repeat the test at various speeds to emulate partially loaded operation. Compile all the data, and make a nice Excel spreadsheet complete with graphs!

[gtxracer]

Originally Posted by BrianG

That would be tough to do. You'd have to repeat the run EXACTLY the same way to be of any statistical use. It would probably be easier to hook the motors to a constant mechanical load and then time how long each runs before the pack dies. Then, repeat the test at various speeds to emulate partially loaded operation. Compile all the data, and make a nice Excel spreadsheet complete with graphs!

Tell you what, send me your Neu and I'll do all the tests

I'm not really looking for anything that scientific. Just a general feeling...from someone who maybe was running a cheapo motor and upgraded to an expensive unit of roughly the same speed...did you get an extra 2 minutes of run time on 5000Mah batteries? Just an idea how much gain there will be due to all that efficiency...

DM

[Finnster]

Its kinda hard to say Dave, but the is a huge difference in the feel between the XLs and a Neu. There is so much more TQ that the Neu can just make the truck zing when I want it to, where the XLs needed a bit more run-up.

You may just end up driving faster w/ the greater power and end up in the same place. But, as a very very rough estimate... if an XL is 70% eff, and a Neu (on 4S) is ~91 (call it 90%)

Then .9/.7=1.28 or so. Ie giving you 28% more runtime, if you drove the same spd. IDK the exact eff #'s of the XLs, they are not rated, but just a # I've quoted seen before . If they are 80%, then not as big of a gain.

You may be hard pressed to make 15min on 4900mah. You may need to just go upto ~6000 if that is the end-goal, and may be cheaper than trying to pinch that much out thru eff gains. The Neus do rock tho

ok i think i get it now.

here is my next question that never really got answered. can a neu or lehner run on a mamba max?

and would those motors be ok on 4 cells. 4800mah?

my run times right now with my 9xl are about 2 1/2 of my friends tanks on his nitro revo. and they lost for about 15min. but thats not driving it hard for the full time. its just taking it easy and going off jumps. i should be going to the track in a few days so i well really see how long my run times are goign to be when i drive it hard.

[mkrusedc]

I tried to run my Neu on a MM and hated the cogging. Some in this forum have been able to do it but I couldn't. I did try all the usual suggestions but when i want my truck to go i want it to go. IIRC Lehners however can run on a MM.

so if i did decide to upgrade motors. i could just go to a lehner motor and i dont have to change my esc. I think i might look into that.

[MetalMan]

Good luck finding a non-used Lehner, though... Currently there is no preferrable way to obtain them in the U.S.

[Hakan_J]

Originally Posted by MetalMan

Good luck finding a non-used Lehner, though... Currently there is no preferrable way to obtain them in the U.S.

Is it too expensive for you in the U.S. too order directly from lehner in Germany?

[MetalMan]

I haven't heard of anyone ordering directly from Lehner, has anyone else?

[Hakan_J]

Originally Posted by MetalMan

I haven't heard of anyone ordering directly from Lehner, has anyone else?

Do you mean anyone from U.S. or just in in general? I have ordered directly from lehner and so has two of my friends, works great. I am in Sweden though and so are my friends...

[MetalMan]

Yeah, in the U.S.

well how bad is the cogging on the neu motor with a mamba max.


and just to make sure cogging is when its like hesitating to go right?

[mkrusedc]

Originally Posted by drkros3

well how bad is the cogging on the neu motor with a mamba max.
and just to make sure cogging is when its like hesitating to go right?

I did not like it. I am a basher and like poping wheelies, powerslides, donuts etc. I had to remember everytime to start out slow...it was a pain. Everything I tried helped but didn't minimize it enough for my liking, but maybe that is just me.

[MetalMan]

Some of us have better experience with the Neu/MM cogging issue, including myself. I haven't found it to be much of an issue.