60 mph mamba brushless setup for e-maxx, would this work?

[extremexmods]

Using 12 cells and a Mamba Max esc, could I use the wanderer 6XL? I know for a fact I will stick with a 12 cell setup. I see on the feigao motor chart (same as stats for tbe BK Wanderer) the Feigao 540 6XL has a max amp rating of 110, would this be constant? Also, on the kershaw designs website I see they have motor bearings rated for 70,000 rpm and 100,000 rpm. What would happen in real life with those rpm speeds?

[Procharged5.0]

Originally Posted by extremexmods

Using 12 cells and a Mamba Max esc, could I use the wanderer 6XL? I know for a fact I will stick with a 12 cell setup. I see on the feigao motor chart (same as stats for tbe BK Wanderer) the Feigao 540 6XL has a max amp rating of 110, would this be constant? Also, on the kershaw designs website I see they have motor bearings rated for 70,000 rpm and 100,000 rpm. What would happen in real life with those rpm speeds?

My personal opinion (I have a mechanical & electronic engineering background) is that the XL motors and in particular the 540/550 sized motors are too large to spin t those extreme rpms. The balancing on the motors would have to be much more precise and even then there would be problems. Smaller motors can spin faster with better success.

Remember too that hi-rpms are VERY requiring on the ESC as well. Processing at 75,000rpm is far more demanding (and not possible on certain ESC's) that at 25,00rpm.

[extremexmods]

So maybe 12 cells, 7XL, mamba max esc gear for 45-50, keep everything lightweight meaning no added aluminum. I said in an earlier post that I decided to tone things down to 50 mph. Lipo is not an option, my family has banned lipos and I really do not think they are safe enough for truck bashing use. My current setup is the kershaw designs dual 970 ,motor setup, which goes 45 mph and has a very high center of gravity, much higher thank stock, I set them up with a high ground clearence and had now difficulty handling the truck.
Take a look at the picture of the slammed maxx on this page, I am using those towers and will slam the truck low for street handling. I only hope the mamba esc could take a 7XL on 12 cells, but I am prepared and to use an 8XL if I could safely gear it up to 7XL ground speed. In all cases, lithium is out of the question, decision by family (parents), and something I can't control. About the motor bearings, I would never run a motor that fast, I just was curious about what the motor would do at those speeds. I guess it would self destruct. My motor will be heatsinked. I will spend most time in first gear, second gear only for occasional speed passes on the street.

[extremexmods]

Just researched and have figured the 7XL is too much for the controller, I will use a the 8XL instead.