1/8 Buggy w/ a Outrunner Motor

[Sylvester]

3mm screws .. gotcha . thanks.

[jhautz]

a little update...

Got it set up for a test run, The battery box isnt finished yet but everything else is. so I just took the pack and strapped it in with some velcro straps and gave it a quick test run up and down the street. Nothing major. I used a half charged 5s lipo just to give it a little safety margin for the first run.

Some observations from the first run.

The outrunner motor with the Mamba Maxx is all but useless. It coggs so badly that i can barly even get it to move. When it cogged I let off the throttle IMEADIATELY. I read the horror stories of the Mamba max on 5s melting down under cogging conditions. I think this is just a compatabiltiy issue with the mamba and the multi pole motor. (Just like CC told me it would have) Cogging caused the motor to get very hot, very quickly, the mamba didn't seem to generate much heat though. Hopefully the software update from CC will fix this when it comes out. If I gave it a push so it was rolling then it would go and had really good power for such a small motor. from the rolling start it would break all 4 tires loose and start sliding sideways.

Next I swapped out the motor for my Neu 1515-2.5D(1700kv). This ran MUCH better. Still had some slight cogging issues, but as long as I didnt just punch it from a standing start it was fine. Just needed to roll on the throttle and all was good. I must say Im pretty impressed that this little controller can handle the big motor as well as it does. It took 4 or 5 full throttle runns down the street and when I brought it back in it was barley warm. So far so good.:018:

Something I did observe with the Neu/Mamba, when I did try punching it from a stand still a couple times. Once it cogged so badly it actually jumped backwards 3 feet or so. :dft002: That freaked me out and I decided standing starts at WOT are not a good idea.

So for now I am going to finish this thing and then start testing with the Neu. I might try my Lehner 1940 in it and see if that motor will run cogg free. CC also told me that that the Lehners were very close to thier motors and would probbaly runn better than a Neu untill the update comes out. Problem is, its a 2200kv motor and just a little to hot for my comfort on 1/10 ESC. Thats the motor that was pulling 130A from the chart below. So its not really a good long term solution for me. Just an experiment to see if the 2 pole runs beter than the 4 pole on the MM.

I am not going to give up on the Cyclon outrunner. When the thing ran... it was pretty damn impressive I gotta say. When I get a chance Ill drop it into my emaxx and test it with the a Quark controller. I'm betting it will be much better cuz Quarks handle the muti pole motors with no issues. (and an email from Cyclon actually recomended this controller) I'll follow up with a post with these test results when I get around to trying it.

I gotta say, Even though some of you have tested it and swer by it, I had my doubts as to if the MM would be able to work in an application like this. But so far it looks lke it could be viable. Won't know for sure though untill I get it completely finished and really see what it can do.

[BrianG]

Good test! I bet that outrunner would work a lot better with a different controller like the Quark since it specfically has an outrunner mode. Maybe an MM update will fix that.

I am curious to hear about the performance and thermal characteristics of the LMT with the MM.