- Tamiya TRF 416 - Kentech - Small Carpet Track - 12.01.2008 -

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Yesterday I had the chance to do another test session with the Tamiya TRF416.

I've got to say that this car is so enjoyable to drive! I never thought running on carpet (a surface I've never really enjoyed) could be this much fun!

Below is the best setup I have run so far. A couple of changes compared to last weeks test. First I played with the steering a bit, again increasing the spacers between the steering link ball studs. This helped the car through the tight corners, although running less spacers makes the car more predictable. I now run 3mm, but I believe for this track maybe 2mm would have been the optimum for me. On a large track with race-type high grip I belive it might be a good idea to only run 1mm or even less.

Another change I tried, inspired by what I have seen from the TRF team on both the 415 and 416, was to raise the rear link by 2mm outside and in. I felt this made the rear end feel "softer" and more smooth, I'd say it felt better, but I need to experiment with this more.

A great improvement was to lengthen the weelbase at the rear by switching the spacers on the inner hingepins. I had so far run the wheelbase according to the instructions, i.e. 1mm in front of the arms and 3mm behind. So the wheelbase increased by 2mm. I really did not think this would make a big difference but it did. The car was really stable and easy to drive, but did not loose any corner speed. The car also fet amazingly smooth after this change, believe this is mostly due to the change in driveshaft angle.

I also tried the East Coast Lexus IS250 body again and it performed as good as anything else. Looks cool as well. Very light.

Another thing I tried was the Square Tamiya Aluminum High Torque Servo Saver. This is the same part used by the TRF team at the JMRCA race and now also at the DHI Cup. This used the springs and servo adapter from the original Tamiya servo saver but all the play is gone and it seemed to work very well.

For the next test session the TRF416 spools will have arrived so from then on I will run the spool.

Kentech

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