How To Wire Up A Tamiya Radio Controlled Car MSC (Mechanical Speed Controller)

This video is in response to a question Tucker posted on www.rcknowhow.c... wanting to know how to wire up a standard Tamiya MSC (Mechanical Speed Controller).
MSC's were fitted to most early Tamiya radio controlled cars and offer pretty crude three step speed control in both forward and reverse. The speed of the vehicle is controlled by a servo connected to channel 2 of a 2 channel radio system.
Motor wires on a standard Tamiya MSC are usually coloured Yellow and Green. Ideally these should be connected to the matching coloured wires on the motor. If the motor runs in the opposite direction to that required, simply swap the wires around on the motor.
The three thinner wires - 2 purple and one blue connect to a high power 0.3 ohm resistor which regulates the power supplied to the motor. The blue wire goes to the centre terminal on the resistor and the two purple wires connect to the two outer terminals of the resistor.
The larger White connector is the Battery Connector. This is know as a Tamiya Battery Connector and will be compatible with the majority of 7.2v and 8.4v battery packs.
You'll also notice a small red connector. This should be connected to a simple power switch harness and then on to the Receiver.
Hope you enjoy the video! Any questions, please feel free to ask in the comments.

[@arandomhobbychannel6718]

Cool, i like the circuit electric speed controllers that the have today, for the traxxas cars, but i am interested in how they did back in the 80's with mechanics, amazing, good ingenuity.

[@hadeuhh8208]

where can i find the resistor

[@OceanTemple]

thanks for this! The fuse on my MSC keeps blowing and i cant work out why (the wires are wired correctly) do you have any thoughts why this could be?

[@brandonntyler7675]

So either of the purple wires can go on either side ? Please help.... just want to make sure I hook it up the right way. Thanks

[@rickdaoust4752]

Where would the jst connector plug into the receiver any help is appreciated

[@RC-ty5ym]

Get an esc

[@nopochoclos]

Hello a friend of mine lost the control of old Tamiy Datsun 280zx, can i replace it with common controller? i dont have any idea in RC hobby, the internal battery can be replaced by modern battery too?
Thanks

[@killingtimeitself]

Yes you can replace the esc and battery as long as the battery can support the esc and the esc can support the motor or do you mean receiver in that case yes

[@LifeOfRlce]

Tyy

[@judyantippas2497]

HOW CAN I GET THIS PART TAMIYA RC PART 3 STEP SPEED CPNTROLLER 5182182 PLEASE LET ME KNOW

[@ulsgarth]

I need this heat sink what is the name for me to buy on ebay
Thank you.