Wheel controll

[Chris230291]

Hi. Does anyone use a whel transmitter with An independent skid type steering? If so how does it handle? When the wheel turns with no throttle will the robot still turn? I'm assuming using a mixer will do this? If so is there many different types of mixing? Any help would be cool.

Cheers

[muchalucha]

Re: Wheel controll

yes the robot would still turn like normal by jsut moving the wheel, Its a matter of personal preference to be honest. i personally dont like them, bu thats probbaly because i only normally ever used standasrd stick txs. No reason it wouldnt work .

One thing though, make sure your wheel tx has 50/50 throttle settings, not 70/30 as 70/30 wouldnt work with any robot escs i know of.

[Chris230291]

Re: Wheel controll

awesome thats cool. what do you mean by 50/50 though? and is a mixer just a mixer or are there different ones that do things differently?

thanks for your help

[muchalucha]

Re: Wheel controll

If your transmitter has an internal mixer you will want elevon mixing (all on the right stick, or throttle and wheel in this guess im guessing). Again, a thing of personal choice but vtail mixing is using the elevator and rudder channels (vtails are a type of tails on rc aircraft). If you are using an extrenal mixer either will do as you cna choose which channels you plug them into on the receiver.

50/50 means that when the stick is at rest, it is exactly half way between forward and reverse. 70/30 is great for cars as it provides 70% of the travel (so finer control) to the forward function on the car and only only 30% to the less commonly used reverse. A way to test if your transmitter does this is to put a servo first on the steering channel and put the servo horn exactly in the middle, then put that same servo on the throttle channel and see if it stays in the middle when the throttle lever is let go.

as far as i know, all external mixers do the same thing. Stay away from ccpm mixers as these are for helicopters and do something entirely different. And are also really expensive lol.

Hope that helps , sorry if it was a bit confusing hehe

edit: it badly needed proof reading hehe

[Chris230291]

Re: Wheel controll

sweet cheers dude. i dont think i will be spending a lot of money on the transmitter so i guess if i go for a good name i wont have mixing, which will make things easier?? and as for the 50/50, will this cause me problems or will i just have less slow speed control in reverse? been a great help, cheers man. oh! and how will the 3rd channel work on a wheel transmitter? will it just be a switch? sorry i haven't a clue with things rc. im learning though, it's cool.

Cheers

[widow_twanky]

Re: Wheel controll

sweet cheers dude. i dont think i will be spending a lot of money on the transmitter so i guess if i go for a good name i wont have mixing, which will make things easier?? and as for the 50/50, will this cause me problems or will i just have less slow speed control in reverse? been a great help, cheers man. oh! and how will the 3rd channel work on a wheel transmitter? will it just be a switch? sorry i haven't a clue with things rc. im learning though, it's cool.

Cheers

I just picked up a Spektrum DX3.0 because we seem to be doing quite a bit of driving on the cars with wheel transmitters.

Have just tried it out and it seems just fine. The mixing on it is disabled because I'm running it with a speed controller which has internal mixing but that all seems to work just nicely. I Dave Moulds uses one for driving 360 but does not use it for weapons control.

The third channel on these can be set to do various functions such as lap timer, gear selector etc. I did notice that you have to press once for on and press again for off so if you're not concentrating then things could go horribly wrong. The set up isn't that intuitive either so it's one of those occassions where reading the manual really helps. The third channel doesn't seem to do a proportional control either so if you have need position control or speed control (spinner) it's not much use.

I think Dave uses a kenny and a seperate controller to operate the disc on 360 and has a seperate receiver in the machine.

Haven't tested out the failsafes either.

The dx3.0 is about 80pounds but you can get the dx3e which is slightly cheaper at about 70pounds.

[Chris230291]

Re: Wheel controll

ahh cool nice one. i was looking at the spectrum 3ch one, was my first choice out of a few. so the 3rd channel wont operate a servo? (sorry if i misunderstood i dont know RC) i planned on using a battle switch or a servo with a switch to run a weapon (spinning drum).

Thanks for you help dude.

[daliad100]

Re: Wheel controll

From their manual

2P = The 2P, or 2 position, Servo Travel function is designed to be used as a transmission gear shift channel. This feature is designed for use only with vehicles such as the Traxxas® T-Maxx. This function is accessible through the Grip Button C or Grip Dial A if Grip Button C is occupied by another function. In this function, the servo€™s travel can be selected to only three positions: left, center and right. The left and right travel values are determined by the End-Point Adjustment function, page 23.

Hence you can have a servo set up to go from full left to full right and be a flipper on channel 3.

http://www.spektrumrc.com/ProdInfo/F...30ManualHR.pdf see page 16.

Take a look thorugh the manual and find a setting that will allow you to do what you want.

[widow_twanky]

Re: Wheel controll

From their manual

2P = The 2P, or 2 position, Servo Travel function is designed to be used as a transmission gear shift channel. This feature is designed for use only with vehicles such as the Traxxas® T-Maxx. This function is accessible through the Grip Button C or Grip Dial A if Grip Button C is occupied by another function. In this function, the servo€™s travel can be selected to only three positions: left, center and right. The left and right travel values are determined by the End-Point Adjustment function, page 23.

Hence you can have a servo set up to go from full left to full right and be a flipper on channel 3.

http://www.spektrumrc.com/ProdInfo/F...30ManualHR.pdf see page 16.

Take a look thorugh the manual and find a setting that will allow you to do what you want.

The third channel will allow you to operate a battle switch or a servo and i think you can adjust the end points on a servo. It will have difficulty if you want to set the speed of say a disc or have good control over servo position rather than an on/off switch. It works though but I'm quite sure I'll get more into it as time goes by.

[beast]

Re: Wheel controll

Chris if you dont have a clue im sure you can pop around my house and i can ans most questions for you
( i take it by your profile you live in Lichfield)

[Chris230291]

Re: Wheel controll

Cool awesome, cheers for the help guys. Beast thanks for the offer, ill add you and if i find my self stumped ill give you a shout.

thanks

[Mouldy]

Re: Wheel controll

Yup i use a dx3r and a fully automated DXkenny7 to drive 360.

If you haven't bought it yet i would suggest the DX3R. Its really easy to navigate through the controls and setup exactly how you want it. Id say its the easiest TX Ive ever used.

[Chris230291]

Re: Wheel controll

No i haven't brought it yet. i will look into that. cheers mr_turbulence

[beast]

Re: Wheel controll

are you sorted yet ?

where do you live in lichfeld ?

John

[Chris230291]

Re: Wheel controll

I'm just in steethay mate. Near the anchor pub. I'm sorted I think. I just need to buy but concentrating on my design at the moment. Putting it into cad and tweaking my original sketch here and there. I have all my motors and materials are easy enough to get hold of. Waiting to se exactly what I need first. It's just the electronics I need to get sorted. I've decided to go with the scorpion xll controller to get me started. I'm still looking at radio gear. I'm not too sure what sort of money to spend yet. There's some really cheap units on the Internet although there not the names I keep hearing. But if they work just the same I'm happy to get a cheapo set.