Thanks for the responses guys! I think i'm pretty much sold on one of these, unless this guy ends up selling me his axial ax10.... Another question though, will my Spektrum dx3s transmitter work for this crawler
Yes and no.
I highly doubt you will be able to bind the spektrum to the stock reciever.
If you use a spektrum reciever as well, then you will will be able to drive and steer the front.
The 4 wheel steering setup however, is done totally by the remote.
The spektrum dx3s has 3ch and I know the 3rd channel can be programed to work a few different ways. I think you can program it to work as a rear steer button, giving you straight/left/right but not proportional.
The stock radio gives you porportional control over the rear steer...whether used as rear only or tied in with the front steering.
The stock radio is the gem of the rs10. The radio/rx alone I have sold several in my store for about half the cost of the whole truck!
I remember back in the day, when to have rear steering I had to take a traxxas tq3 AM radio, open it up, solder a radio shack 3 position swtich...just to have non proportional rear steering on my modded wheely king! Radios have come a very long way since then.