Small Carpet Track

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

Source: Blog dei Kentech