4 wheel steering help (futuba radio)

[rescue119]

I never have had 4 wheel steering and I am trying to run it on my Tamiya Land Cruiser.

I am using a Futuba 3PM 2.4g radio 3 Channel.

I want to control the rear steering independantly of the front. How do i set up my radio? I have it plugged into the 3rd channel but all i can do is move it one way with the switch. I know if i wanted to have the rear steer when the front does i woudl jsut put in a y harness but i would like to be able to just control the rear on its on.

Any advice or will i only be able to use the y harness?

[cm113]

the best advise is to get a copy of the manual and read, it should allow you to set the rocker to toggle your rear steering . good luck

[pasan]

This is my theory on how it can be done with my JR XS3. I haven't had to try it because the stock JR servo I received is reversed anyway. But what I do to crab walk is flip the front servo. Even though the steering is reversed it's still pretty neat to be able to do that with the press of a button. Front is master, rear is slave. Rear (mixed) servo is not affect by servo reversing.

This is how you might set it up, given that your Futaba works in a similar fashion

1) Slave servo will be at the front
2) Master servo will be at the rear
3) Setup the mixing properly, and you will have a vehicle that will do the crab walk in the direction you turn.
4) Reverse the steering. Now the rear wheels you should snap to the opposite side, assuming that the front slave (mixed) servo is not affected by servo reversing.

Try this out get back to us, I'd like to see if my theory works :)

[rescue119]

found a rightup on rccrawler.com about what you are mentioning.....wait heres the link

http://www.rccrawler.com/forum/showthread.php?t=24564

[pasan]

Yup thats it. I never bothered looking up a tute, at first I had designed a ghetto turnbuckle linkage but that assembly is just not viable without subjecting the steering rod to some major cross axis stress.

From your description, you seem to have your 3rd channel in the "2 position" which is usually used for shifting a transmission. Set it to Linear and you should be good to go. You get a lot of control over how to set things up. I have mine set up at 50% in the rear because I just need that extra bit to compensate for the wide turning radius caused by the locked axles. Investing in a $60 steering computer is pretty useless for us 3 channel owners who know how to program our radios.