[hutchice]

I have been working on getting the airsoft firing mechanism to work with the tcb.  I have seen the videos but they are no help.  The firing mechanism does not have a limit switch.  The original system worked on just two wires.  Any help would be appreciated.

[LukeZ]

I'm afraid the TCB is not compatible with the old version Heng Long units that don't use a limit switch. You can buy the correct ones from Taigen for ten bucks: click here. You'll still have to rewire it as shown in the Wiki.

[hutchice]

Thanks for your help!  That is what I was afraid of.  Hey and $10 is better then the time that I have spent trying to get this to work.

[LukeZ]

Yeah, sorry that wasn't clear. I added a note to the Wiki so those in the future know to get the correct unit.