Video and pics of my latest testing...

[B4Maz]

Video and many more pics here (http://fastrc.blogspot.com/2007/07/video-x2-update-testing-at-houston.html)

http://nick.maslowski.googlepages.com/CIMG1364small.JPG

http://nick.maslowski.googlepages.com/CIMG1360small.JPG

http://nick.maslowski.googlepages.com/CIMG1371small.JPG

http://nick.maslowski.googlepages.com/CIMG1374small.JPG

http://nick.maslowski.googlepages.com/CIMG1377small.JPG

http://nick.maslowski.googlepages.com/CIMG1358small.JPG

http://nick.maslowski.googlepages.com/CIMG1361small.JPG

http://nick.maslowski.googlepages.com/CIMG1365small.JPG

http://nick.maslowski.googlepages.com/CIMG1369small.JPG

http://nick.maslowski.googlepages.com/CIMG1375small.JPG

Video and many more pics here (http://fastrc.blogspot.com/2007/07/video-x2-update-testing-at-houston.html)

I was able to get permission to test at the Houston Raceway. Its a full scale 1/4 mile drag strip on the east side of Houston in Baytown Texas. For this test I designed a new body out of Lexan. I was running 8s Li-Po 3300 mah Thunder Power batteries and a NEU 2215/3Y motor direct drive. I was not getting any range with my Futaba 2.4 ghz 3PM transmitter (only 100ft) so I went back and used my very old Futaba 27 mhz 1024 PCM transmitter. I was able to get almost 900ft of range with this old controller.

The results of my testing showed that around 70-80mph my TMRC drag racing tires would catastrophically fail. I would hear a very loud "crack" or "pop" as they would explode leaving foam all over the track. The car was not damaged in any way and was still very controllable even after tire failure.

After testing, I checked TMRC's website and it says that these tires have gone 107mph on nitro drag cars. I called and they said that other racers have encountered the same problem I have. They basically said that the tires might be hopping off the ground and free-wheeling for a split second. This causes the RPM's to go way up and the tires can fly apart. I will have to go back and try different spring and dampening combinations to minimize my wheel hop.

[porra]

That motor is probably acting like a brick wall. Really nice set up. See if you can blast some runs running the car the other way around.

[B4Maz]

That motor is probably acting like a brick wall. Really nice set up. See if you can blast some runs running the car the other way around.I originally designed the car to run with the big tires in back. But testing proved that the car was very very unstable at any speed. Basically I am running the car backwards and I am having no problems with stability now. It runs very smooth.

[t-maxxjr]

i aint got nonthing on that

[Billy W]

might be a bit late now.. but .. if you are still having tire issues... try a harder compound... get with John Foister at BSR racing tires.. we have talked alot about this speed deal... and maybe a denser foam than the TM drag tires would help....

just an idea...

[balang_479]

what you turned it round??

[Mod Man]

Actually, this is ingenious! Front wheel drive is not a bad idea from a stability standpoint. The only issue is weight transfer under accelleration.

Good design, Man! ;)

Matt