Clarks initial mind set was he didnt think these would sell very boy i hope he's mistaken
thus the limited sound sets available at the moment

the Tiger is the first and we are working on soundsets for as many tanks as we can get our hands on so the sky is the limit really lol

clarks initial thoughts was for a direct RX18 replacement but without all the nasty bits ie killer track recoil (the tk20 is the same as the Tamiya set up)

2 styles of recoil are available Tamiya and servo recoil

the tk18 is a direct RX18 style with h/long handset retained and the airsoft function with the bonus of much better sound

hope that helps clear things up slightly

i cant wait till you guys get yours as the " proof will be in the pudding" as they say
just remember to follow all the instructions on clarks website and all should be good

we did have the experimental version running off a planet 2.4ghz and it would seem the stick setup can be altered at least in the driving style
by switching receiver cables
we are still hanging out for a latest version tk20 and 30 here to get our teeth into then we will have more on it

Rob