Tamiya Radio Control Car Competition

Photos, videos, race results and coverage of the event.

TITC 2010 Results

MINI 2WD

1 JILLES GROSKAMP THE NETHERLANDS 
2 PAPHON C. THAILAND
3 MASAYUKI OYAIZU JAPAN
4 WEN-PING CHIANG TAIWAN
5 RON CHEN TAIWAN
6 LEONARD SLIM SINGAPORE 
7 KITTIPONG R. THAILAND
8 AZRI AMRI MALAYSIA
9 TANIT K. THAILAND
10 ATSUSHI HARA JAPAN

MODIFIED CLASS R/C TOURING CARS

1 ATSUSHI HARA JAPAN
2 SHINNOSUKE ADACHI JAPAN
3 NAOTO MATSUKURA JAPAN
4 JILLES GROSKAMP THE NETHERLANDS
5 SURIKARN C. THAILAND
6 HAYATO MATSUZAKI JAPAN
7 ANDY MOORE UK
8 MEEN V. THAILAND
9 TAKAYUKI KOUNO JAPAN
10 KIYOKAZU SUZUKI JAPAN

BRUSHLESS 11.5T TOURING CAR

1 SIRI N. THAILAND
2 PINSANT THAILAND
3 ANDREW SU MALAYSIA
4 FAI HO HONGKONG
5 DANIEL F. THAILAND
6 WANG HEI FENG CHINA
7 STICK KING HONGKONG
8 SUCHART B. THAILAND
9 P. TOM HONGKONG
10 LAU WAI LEUNG HONGKONG

FORMULA ONE (F1)

1 PERRY LEUNG HONGKONG
2 TSUTOMU ARAKAWA JAPAN
3 PHICHIT P. THAILAND
4 NICK WONG HONGKONG
5 ONG CHEE YONG MALAYSIA
6 PORAPONG R. THAILAND
7 ANUSORN S. THAILAND 
8 AKKAWAT C. THAILAND
9 PORNCHAI B. THAILAND
10 CHAYODOM S. THAILAND
11 BRETT DOUCE AUSTRALIA
12 BOY MALAYSIA
13 SAKBOON K. THAILAND
14 CASSIDY KHOO MALAY

Source: www.titc.in.th

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Generally speaking, a smaller rotor improves driveability (smoother) and gives more topend but the downside is slighly lower efficiency and less torque. Temperature isn’t much different.

unfortunately no comparison possible between powerprofiles of SPX StockSpec and boost profiles SXX StockSpec is possible!
The reason is that algorithm works differently and SXX StockSpec clearly makes more power.

Lowering the timing on the motor (e.g. changing from insert “oo” to “ooo” or “oooo”) will of course lower the motor temperature, but you sacrifise power in higher rpm range slightly and may need to alter gearing to reach enough topspeed again.

kV rating is not affected too much by sensor timing, therefore we don’t give different ratings for different timings. So you can go with 7100kV for 5.0t at -10° (oooo insert) as well.

standard in all X12 motors is 12.5mm rotor, Tamiya specially requested a 12.0mm rotor in their new motors but ourselves we stick to 12.5mm as we feel this is the best allrounder!

4.0t with LiPo is VERY fast and not the wind I’d recommend to use with LiPo’s… common winds for LiPo use in a touring car is 4.5 to 5.5, 5.0t seems like the best compromise and is what I’d recommend.

Also on brushless motors it is important to oil the bearings from time to time, wrong gearing or wrong adjustments (timing or speedo) may also cause excessive heating which can result in bearing failure.

I assume you run TC, correct? If so, I’d start with profile 5 and lowest motor timing (e.g. “oooo” insert) and then increase from there and check motor temperatures (they should be below 90°C). (LRPSXX TC Spec)

Marc is currently testing quite a bit, so he switches back and forth between Tamiya (LRP SphereTC OEM version) and SP speedos. I’ actually not sure what he used at the last race but I know that Jilles won with our speed-control…

paralleling capacitors is/was only required if the capacitor was of bad quality, with a good quality (single) capacitor it’s not required and therefore not worth the hassle to add another one

We have tested with many different capacitors and so far our original type, which is a very expensive LowESR version “Made in Japan”, worked best. None of the other (bigger & smaller) we tried worked better. So in my opinion there is no point in trying other capacitors.
Especially stay away from the flat “SuperCapacitors” as they don’t work well.

As for the gearing at the Worlds with the X12’s:
- we ran 4.5t
- lowest timing setting (oooo), which seems to work best anywhere!
- gearing ~8.6:1
- powerprofile 3 on the speedo

Remember this was with 6 cells.

As for the temperatures, anything below 100°C is fine!
The X12’s does get fairly warm on the outside as it makes a lot of power and also transfers the heat well from the inside to the outside due to the clamped stack. But we have a magnet with a very high temperature grade, so until no solder starts melting there is no danger.

Source: forums of rctech.net

Take for example the recent 2010 DHI Cup. Here are the winning times in the A main of modified and pro-stock class.

Mod vs stock DHI cup 2010 results

In both race times and fastest times, stock is only 5% slower than modified. And probably only 2 to 3% slower if the modified drivers (professionals) were driving stock.

Maybe someday stock will be faster than modified

Top 10 Modified DHI Cup 2010 Results

1. Ronald Völker (Yokomo BD5, LRP SXX TC, LRP X12 Octa 5.0, LRP 5300 40C)
2. Christer Andersson (AE TC5, LRP, LRP X12 Octa 5.0, Reedy 4900)
3. Marc Rheinard (Tamiya 416X, Speed Passion Gran Turismo 2.0, SP Turns, SMC 4700 40C)
4. Teemu Leino (X-Ray T3, LRP, Orion 5.5, Orion LiPo)
5. Steen Graversen (Tamiya 416X, LRP SXX, Orion 4.5, Orion LiPo)
6. Marc Fisher (Corally RDX Phi’09, GM 120, GM 4.5T, Corally IP)
7. Martin Hudy (X-Ray T3, LRP SXX, LRP 5.5T, LRP LiPo)
8. Yannic Prümper (Tamiya 416X, SP GT 3.0, SP 4.5, SMC 4700 40C)
9. Alexander Hagberg (X-Ray T3, LRP SXX TC, LRP X12 5.0, LRP 5300 40C)
10. Freddy Südhoff (X-Ray T3, LRP SXX TC, LRP X12 5.0T, LRP 5300 LiPo)

DHI Cup 2010 Pro Stock Class Results:

1. Alexander Stock (Hot Bodies Cyclone TC, LRP SXX Stock Spec, LRP 5300 40 C LiPo)
2. Tommy Bergfeldt (Hot Bodies Cyclone TC, Advanced Electronics Black Diamond, IP LiPo)
3. Yukijiro Umino (Yokomo BD5, LRP Stock Spec, LRP 5300 LiPo)
4. Henry Salmén (Tamiya TRF 416 WE, LRP SXX Stock Spec, LRP 5300 40C LiPo)
5. Tony Streit (Hot Bodies Cyclone, LRP Stock Spec, LRP 5300 LiPo)
6. Ola Westholm (TOP Photon, AE Black Diamond, IP LiPo)
7. Thomas Larsen (Tamiya TRF 416 WE, LRP SXX Stock Spec, LRP 5300 40C LiPo)
8. Carsten Madsen (Tamiya TRF 416 WE, LRP SPX Stock Spec, LRP 5300 LiPo)
9. Daniel Horn (X-Ray T3, GM Genius 120, GM 5000 40C LiPo
10. Bastian Hennig (Hot Bodies Cyclone, LRP Stock Spec, LRP LiPo)

Comparing the winning times of Modified versus Pro (stock) touring:

Ronald Völker   20  5:09.119  15.928
Christer Andersson  20  5:10.710  15.815
Ronald Völker   20  5:10.143  15.930

Alexander Stocker  19  5:07.217  16.505
Tommy Bergfeldt  19  5:12.520  16.685
Yukijiro Umino   19  5:08.941  16.647

Average winning times for mod is 15.48/lap versus 16.26/lap stock. Stock TC is only around 5% slower. And if the mod drivers drove stock tc cars, maybe 2% slower?

Sources: RCTech.net, Redrc.net, DHI-Cup.dk, Myrcm.ch

Tire blowout.

Related Websites:

Here are more articles, photos, videos and setup tips for the Tamiya m-chassis mini rc cars such as the M03, M04 and M05.

Here are past winners and their radio control touring cars.