Radio Controlled John Deere 9560R

[RC Tractor Guy]

If anyone has questions about how I made my SIKU John Deere 9560 R into an RC model please post them here. Also any requests for pictures post them here and I'll get them as soon as possible.

[dan]

What servo did you used to steer the 9560r

[RC Tractor Guy]

The servo I used was the hk15148b servo from hobby king. It's a metal gear servo and seems to have enough power for the job.

[dan]

As you can probably tell I'm new to this hobby and I'm going to start with the 9560r but would I need to use a esc for this motor as its a small motor and if I did which one or what would I use if I didn't use an esc and what size battery I would need

[RC Tractor Guy]

Are you using an existing RC receiver or building your own? What I described above is a servo so it has a built in ESC. You would need a battery that can give you 6 volt to get the Max power from that servo I think.

[dan]

I'm. Using an existing 3 channel reciever I know I can just plug the servo into the reciever but what about the the motor I got the 70189 from tamiya would I need an esc For that motor if so which one and would I need. Different battery

[RC Tractor Guy]

Ah okay sorry my mistake, well I have never actually used an ESC but it should be fairly simple.

You need to choose one for a brushed motor for starters, that is important. Most will be made for much larger motors so current shouldn't be a problem, this motor will draw less than an amp so anything over that will be fine. Voltage will be an issue, the motor should be driven at around 3 volts I think whereas a lot of rc car motors would probably be 6 volts. If you have one to hand you can set it up with no motor and measure the Output voltage then change the battery/input voltage until you get the output range you want. Then put the motor on and measure your range again it will most likely be lower with the load.

Another thing you could do is just take the control board out of a cheap big servo or one with broken gears and solder two resistors in place of the potentiometer. This would be a lower voltage ESC than a normal one because servo motors are small low current brushed motors. I usually do this for testing motors and it works well for me but might be more jumpy than a proper esc, l don't know because I've never actually used a proper ESC.

If I haven't answered your question let me know, I'm happy to keep trying until we crack it. And welcome to the nightmare...I mean hobby

[dan]

Would it be possible to get a bigger motor that would fit in the tractor with a higher voltage that would use a regular esc one maybe with metal gears and that would be stronger . I didn't receive the tractor yet so I don't know how big of a motor would fit in it. Is there any good tamiya motors you know of that would work

[RC Tractor Guy]

I'm not sure about metal gear motors but you can get some bigger motors, this link has a bunch of motors and gives dimensions and specs

www.pololu.com/catalog/category/34

I don't have the John Deere with me but I think the Tamiya 70189 was a snug fit width wise but there was room to fit a taller or longer motor with some extra modifications I think, I'll have to check that when I get a chance.

If you already have the Tamiya motor then I think you would probably be best to try the servo control board hack. If it doesn't do what you want then you've only wasted 4 or 5 euro.

[dan]

Ok I'm going to try the servo board esc but what kind of battery would I need to run it and I plan on making a dump trailer for it too could I just run like say a servo extension cord to the back of the tractor so then I could plug the screw drive into it for my 3 channel on my reciever and have you ever made a screw drive and how to do it

[dan]

And will any servo work for the servo esc mod

[RC Tractor Guy]

Sorry for the delay, any normal sized servo should do. A mini servo control board will probably be too small and just burn out. it should just take power from your rf receiver just like a servo would, normal esc's only have the battery connection because the motors are high power but we're using a low power high gear ratio motor.

Yes for the trailer I would do exactly what you said, would be a simple solution. You might want to put a battery on the trailer if there was room just to power itself so your tractor lasts longer but its up to you, its hard to find space on dump trailers. I'd also advise you pick a dump trailer with a plastic body to start with if possible, I chose a bulk tipping trailer with a diecast body and it was ridiculously heavy even without a load.

[dan]

Ok hopefully everything will be here today or Monday so I can get started. How would I connect another battery could I just y off of two of them and would the metal gear servo that I'm using in the tractor from hobby king work for the esc and I'm making an aluminum trailer so it should be fairly light

[dan]

Ok hopefully everything will be here today or Monday so I can get started. How would I connect another battery could I just y off of two of them and would the metal gear servo that I'm using in the tractor from hobby king work for the esc and I'm making an aluminum trailer so it should be fairly light

[dan]

And also so your saying I don't need to connect the esc servo mod to the battery just straight to the receiver or am I mistaken if not where would you connect the battery too