@mark christopher: for one idealer midmotor you have to turn the motor. Thats ok for some motors and most speedos. There are some midmotor cars with only one idealer though but they are not as competitive as real 2 idealer midmotor cars.
TC is a bit different .. maybe I shouldn't have said shaft is better but I think it has much more advantages than belt in 4wd offroad at the moment. The best TC is the awesomatix in my eyes and its a shaft car. I dont own one but I know some drivers.. all are faster with that car. No iead if it is the drive shaft alone. Maybe the rotation mass still helps some belt cars I dont know. I guess the Tamiya EVO5 should be great today.
K1 .... maybe it looks like the kyosho kx one