RCM Available gears

[Batfish]

Originally Posted by BrianG

Thanks "Joe". :) I read some of that thread and I didn't see where it said why the motor mount on the chassis didn't work. I would think the mount on the tranny would be far weaker, but I wouldn't dream of second-guessing someone who went through 3 versions of a Jato! :) Did that Lehner Basic 4200 get hot? Any idea how much amperage the motor drew on average and pulse? I wanted to see the videos you had, but the they were removed or something. :(

Two reasons for the motor mount on the chassis not working for me.
1 - Weight distribution. It kept too much weight in the front of the vehicle, which was no good for racing. Aside from testing in my back yard, the only way I used the Jato was on a race track.
2 - Design. The "L" mount I made was held in using the nitro engine mount holes with a couple of weak post/hole screws that just kept moving.

Considering the tranny had those two convenient screw holes and the mount got the motor up (so I could move the batteries back) it was the next logical step, and the best one. That mount held the motor just fine for a couple months and about 20 races. It never broke or bent - it just went to coolhand :003:

I used a basic XL4200, not a basic 4200. The XL4200 never heated up in the tests and running I did...maybe 120F tops, if I remember right. When I was using the MGM 12012, that never got warm. When I used the MGM 8012, that got over 110F a couple times, but never hot enough to be concerned. Although I can't tell you definitively how many amps it was pulling, I can say that the last few times I ran the V3 it pulled on my unmatched GP3300 packs hard enough that they came out of the truck at 120F or more after a 5-minute qualifier, and my IB3600 packs would just barely make a 6-minute main, also coming out plenty warm. The electronics remained warm/cool, so I wasn't concerned about hurting them.

By the way, "Joe" has been in my signature for well over a year :dft012: