Saturday, November 18, 2017

Tamiya M05 Tuning

December 17, 2009 by  
Filed under Toys

This will be a series of tips on how to tune the Tamiya M05 M-Chassis. Hope you find these useful and spread the word.

Weight Balance

First, it is important to have good weight balance. The front left and right tires should ideally be equally loaded. The same goes for the rear.

tamiya-m05-tuning-tips

With motor and steering servo mounted (no esc, battery, receiver, body), the balance:

front right – 230gms
front left – 250gms
rear right – 170gms
rear left – 170gms

As we can see, the front right tire is not as loaded as the left front. One way to compensate is to install the Tamiya M05 Aluminum motor heatsink. This will help even out the weight distribution.

Next important item is weight reduction. In essence a lighter car is usually more agile and faster. Heavier cars are more stable, but will usually be slower in most scenarios.

Tamiya minis (m-chassis) do well with weight between 1,200 – 1,300 grams. The M05 is a very heavy car, usually at 1,300 grams. Ways to reduce weight are:

  1. Use a lightweight body.
  2. Use a lighweight esc and receiver.
  3. Use lipo batteries.
  4. Do not install unnecessary plastic parts if your rules allow it.

tamiya-m05-weight-reduction

Here we can reduce 50 grams by not installing uneeded parts. The esc and receiver is 80 grams. The lipo battery is only 230 grams compared to 300 grams for a typical 1600 Nicad stick pack. The lightweight body is around 90 grams only.

Here is the weight balance of my M05:

Weight of Tamiya M05 mini r/c car.

Weight of Tamiya M05 mini r/c car.

Next, installing the esc and receiver. I spent a lot of time thinking about this. Eventually I decided based on weight balance rather than short esc wires.

Mounting of receiver and esc on Tamiya M05 mini.

Mounting of receiver and esc on Tamiya M05 mini.

Wheelbase and Body

An important tuning aid is deciding on the wheelbase and body. The mini can be setup as short (210mm), medium (225mm) and long (239mm) wheelbase. I decided to try medium wheelbase and use a Tamiya Mazda Miata body.

Suspension Tuning

And finally, suspension setup. I use Tamiya S-grips front and rear. Red springs front and white springs rear.

Tamiya M05 Performance Review

Mini Radio Control Car Race

Mini Radio Control Car Race

I am used to driving an M03 and M04, with my M04 being the fastest of my minis. So my first track performance test of the M05 was on the first club race of the year. We had a full grid of minis.

Happy to report that my Tamiya M05 had the fastest lap of the day (16.27 seconds), which was around 0.5 seconds quicker than my M04. Mine was the only mini to consistently run 29 laps, the rest were 28 laps or less.

So I am very happy with the win on my first outing with the M05. All this weight balance and tuning does make a difference. I will be trying out more things (e.g. long wheelbase, Tamiya M05 differential) and will let you know the results.

Related Topics

Here are more info about the Tamiya M05 and m-chassis r/c cars.

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