2 speed conversion kit/activating servo in my trx4 sport
 

Hey everyone! First post here (flame away!) but have been in the RC community for 20 years now. I bought a a trx4 sport and love it, however I am using it more for trails and want the top end that the 2 speed offers. I realize I should have just bought the defender but here we are! The kit requires a third channel to operate the shifting servo, my question is: What’s the cheapest way to go about activating the shifting servo, without having to buy a 3 channel system? I suppose I can manually turn the Servo each time I need to change gears. Are there any add on switches or hacks to make this happen? I also have a stampede vxl with the multi function knob, would that radio system work for shifting the gears? Thank you all!

Re: 2 speed conversion kit/activating servo in my trx4 sport
 

I ended up buying the Tactic 3 Channel radio with programmable 3rd channel switch ($60). Should have it all finished up this weekend and will post pics.

Re: 2 speed conversion kit/activating servo in my trx4 sport
 

If you plan on sticking around crawlers and scalers for a while do some research about the hacked Flysky gt3b and gt3c radios you can run up to 8 channels for cheap and they work great. I have 2 of them."thumbsup"

Re: 2 speed conversion kit/activating servo in my trx4 sport
 

i ran flysky for a bit for that same reason. needed more channels and they were cheap and worked well