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Futaba MC 112B ESC.

Posted: Fri Mar 03, 2023 5:07 pm
by Fantom
Hi to you all.

I have recently acquired a very nice original Kyosho Turbo Optima. It has a period Futaba MC-112B. Speed controller fitted.

It appears to work fine in forward and neutral but the brake/reverse less so. As per the manuals i can see online the brake part of the sequence works but then the reverse kicks in at what appears to be full throttle.

Is this how it was and should be ? I was keen to retain this ESC as its the old Servo shape type mounting and fits perfect in the Original Optimas radio tray.... But also wanted to use the car so ....................

Cheers Sandy.

Re: Futaba MC 112B ESC.

Posted: Fri Mar 03, 2023 5:09 pm
by Frankentruck
I think that's correct for that ESC. The one I had was similar.

Re: Futaba MC 112B ESC.

Posted: Fri Mar 03, 2023 5:20 pm
by juicedcoupe
https://www.dirt-burners.com/rcdox/Manuals/Futaba/Futaba%20FP-MC12B%20%26%20FP-MC112B%20ESC%20%28EN%29.pdf

Getting the reverse point set accurately can be troublesome with some transmitters.

Re: Futaba MC 112B ESC.

Posted: Sat Mar 04, 2023 10:55 am
by Fantom
Ok Guys thanks for the replies. Shame if this is how it should work as instant full speed in reverse aint kind on the drive train.......

Re: Futaba MC 112B ESC.

Posted: Sat Mar 04, 2023 11:15 am
by juicedcoupe
If your transmitter trigger can be set 50/50, it will be easier than 70/30.