Jammin X1-CR HV conversion

For a Jazz 80-6-18, I guess their car specific ESCs are an option. They don't have any HV ones though. :) Another idea I have is to try forward/reverse mode to see if the throttle responds the same as forward only. Will let ya know.

After thinking about it for a while, for dirt track racing the brake-to-speed behaviour might be advantageous. Kontronik must have had a reason to program it like that - maybe they know something we don't. :)

Temperature started at 80F, which is 26C which sounds right for today's ambient temperature. Summer here. :) I think these motors max out at 200F (magnet limit) so there is some headroom. I'll see how things go when I get my closed body and take it on the track. If it's still bad I might attach a heatsink that protrudes through the top of the body.

I think your Jazz will be version 8 too. I don't recall this behaviour from my version 7 Jazzes. Heck, if version 7 doesn't do this, we could ask Kontronik to downgrade our Jazzes. :) Only improvement I noticed in version 8 was that forward/reverse mode was made usable.

[othello]

You should see the same behaviour with forward/reverse mode as i'm using this mode with my jazz 55.

>After thinking about it for a while, for dirt track racing the brake-to-speed behaviour might be advantageous. Kontronik must have had a reason to program it like that - maybe they know something we don't.

True. I drove my truggy today on grass and never felt that it braked too heavely when i reduced throttle. It's only on tarmac where this behaviour can start to annoy me. I think it really depends how the car is geared, how much the car wheighs and the resistance of the motor when turned without actually applying current. The braking behaviour actually was more obvious in my lighter buggy than now in my truggy.

140F max with 80F ambient temp is nothing to get too worried about.

Interesting that your jazz v7 did not show the same behaviour. Seems to me it's only firmware related then. A downgrade should be possible, but to be honest it doesn't bother me this much ... A firmware up/downgrade would certainly take a good week at least (Austria is a neighbouring country to germany).