Help with a custom build large scale RC
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Help with a custom build large scale RC
Hi -
I have a go-cart and think it would be a good project to convert to a large scale RC. I also have a 3 axis CNC Gantry router that I designed and built myself. I will rebuilt a chassis to have this become a 1/4th or 1/5th scale RC.
I think I have a good handle on what I can and can't do with this. The main area where I have questions are servo's and bodies..
What servo's would I need to use for my steering, gas and brake?
When it is all said and done, I will need a 1/4th or 1/5th scale body for it. Where acan I get hold of an inexpensive body for the large scale cars? Money as always is a big factor in anyone's projects, so need help with finding affordable solutions.
Any other advice would also be appreciated.
Thanks -
SS
I have a go-cart and think it would be a good project to convert to a large scale RC. I also have a 3 axis CNC Gantry router that I designed and built myself. I will rebuilt a chassis to have this become a 1/4th or 1/5th scale RC.
I think I have a good handle on what I can and can't do with this. The main area where I have questions are servo's and bodies..
What servo's would I need to use for my steering, gas and brake?
When it is all said and done, I will need a 1/4th or 1/5th scale body for it. Where acan I get hold of an inexpensive body for the large scale cars? Money as always is a big factor in anyone's projects, so need help with finding affordable solutions.
Any other advice would also be appreciated.
Thanks -
SS
#3
RE: Help with a custom build large scale RC
Well Studysession,i definately think you should use a custom made servo from a wiper motor especially if you go for 1/4 scale.There is plenty of info on the net and here on rcu how to make one.As for the brake servo,if you use a caliper like mine(i think you need a bigger one),you can modify the spring on the caliper arm to be softer.So that you can use probably a hitec 15kg servo.
Sadly,i have no info on off road bodys.My area of interest in on on roads.
Here is the caliper i'm using:
Sadly,i have no info on off road bodys.My area of interest in on on roads.
Here is the caliper i'm using:
#4
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RE: Help with a custom build large scale RC
ORIGINAL: Giorgos_cupra
custom made servo from a wiper motor
custom made servo from a wiper motor
Thanks
#5
RE: Help with a custom build large scale RC
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RE: Help with a custom build large scale RC
Thanks for the links. Any other help will be appreciated as well. I have two 12v starter motors off lawn tractors I am thinking of using for servos if I can figure all this out.
SS
SS
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RE: Help with a custom build large scale RC
Maybe you could use a windscreen wiper for the steering servo? Ive seen it done before on a project similar to this. You may also want to use one for the throttle and brake depending on how stiff the throttle spring is. You may get away with just a standard 1/4 scale servo though. Anyways, good luck and keep us updated!
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RE: Help with a custom build large scale RC
does it matter if you use a starter motor or a wiper motor to build your servo ? the starter motor will have more torque? coulndnt you use the same type of wiring harness that is used with the wper motor?
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RE: Help with a custom build large scale RC
ORIGINAL: speedy.d
does it matter if you use a starter motor or a wiper motor to build your servo ? the starter motor will have more torque? coulndnt you use the same type of wiring harness that is used with the wper motor?
does it matter if you use a starter motor or a wiper motor to build your servo ? the starter motor will have more torque? coulndnt you use the same type of wiring harness that is used with the wper motor?
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RE: Help with a custom build large scale RC
that the way i seeit if you got it use it. a motor is a motor,right?
do you have any expierence with fiberglass? with practice its not hard to work with just messy and itchy. that bug body that quadracer made is pretty nice have you thought about that?
do you have any expierence with fiberglass? with practice its not hard to work with just messy and itchy. that bug body that quadracer made is pretty nice have you thought about that?
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RE: Help with a custom build large scale RC
nice project
a starter motor would not be any good for a diy servo.. as its straight drive (too fast )
a wiper motor is comonly used because its a gearhead motor, geared down (slower with heaps of torque)
plus a starter motor can draw up to 90+amps... Far too much lol
use a wiper motor or any other gearhead motor (eg;electric windows motor)
a starter motor would not be any good for a diy servo.. as its straight drive (too fast )
a wiper motor is comonly used because its a gearhead motor, geared down (slower with heaps of torque)
plus a starter motor can draw up to 90+amps... Far too much lol
use a wiper motor or any other gearhead motor (eg;electric windows motor)
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RE: Help with a custom build large scale RC
It's really sad, wiper motors are easily half the price of a 333in-oz standard sized servo.
Great tip though, all the torque you need to do some serious actuating.
Great tip though, all the torque you need to do some serious actuating.
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RE: Help with a custom build large scale RC
So true -
I have a few robots. I have couple of boxes full of parts and chips. Trying to find my h-bridge's. Should have like two or three I can use for controling the motors. Hopefully I can locate them.
I have a few robots. I have couple of boxes full of parts and chips. Trying to find my h-bridge's. Should have like two or three I can use for controling the motors. Hopefully I can locate them.
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RE: Help with a custom build large scale RC
ORIGINAL: bsrman14
A Tone servo is plenty for steering and throttle. More weight= more power or lower gearing or both.[8D]
A Tone servo is plenty for steering and throttle. More weight= more power or lower gearing or both.[8D]
Thanks
SS
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RE: Help with a custom build large scale RC
That thing is way bigger than 1/4 scale, it's going to be more like 1/3 scale. You need something like this:
http://www.parts123.com/parts123/yb....539.00~~~~~~~F
http://www.metropartsmarket.com/cata...tomgokart.html
http://www.parts123.com/parts123/yb....539.00~~~~~~~F
http://www.metropartsmarket.com/cata...tomgokart.html
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RE: Help with a custom build large scale RC
I like those websites. Thanks for the links. I am going to make a new frame etc... Scale it down a bit just use all the hardware and engine from the go-cart. Or maybe I should go a bit bigger? Dunno....
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RE: Help with a custom build large scale RC
I like the scale of an actual fiberglass bodied go cart like yours. It's huge compared to 1/4 scale it's more like 1/2 scale. Just make sure you have bullet proof steering and redundant failsafes.
http://www.lightninglight.com/index.shtml
http://jo-info.blogspot.com/2008/07/...rt-bodies.html
http://fiberglassgokartbodies.com/products.html
http://www.lightninglight.com/index.shtml
http://jo-info.blogspot.com/2008/07/...rt-bodies.html
http://fiberglassgokartbodies.com/products.html
#21
RE: Help with a custom build large scale RC
Agreed with nitrovette
just over engineer it and you know the chances of a stuff up are greatly reduced.
Aussies & Kiwis do this cos they couldn't be bothered fixing something after they have made it
just over engineer it and you know the chances of a stuff up are greatly reduced.
Aussies & Kiwis do this cos they couldn't be bothered fixing something after they have made it
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RE: Help with a custom build large scale RC
ORIGINAL: bsrman14
A Tone servo is plenty for steering and throttle. More weight= more power or lower gearing or both.[8D]
A Tone servo is plenty for steering and throttle. More weight= more power or lower gearing or both.[8D]
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RE: Help with a custom build large scale RC
Scale it up, use a 200+CC motorcyle engine and just drive it instead of remotely controlling it from the sidelines. Something of that size could do some serious damage if it ever decided to run away...
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RE: Help with a custom build large scale RC
ORIGINAL: motionmachine
Scale it up, use a 200+CC motorcyle engine and just drive it instead of remotely controlling it from the sidelines. Something of that size could do some serious damage if it ever decided to run away...
Scale it up, use a 200+CC motorcyle engine and just drive it instead of remotely controlling it from the sidelines. Something of that size could do some serious damage if it ever decided to run away...
It will be scaled down quit a bit. Going for 1/4 or 1/5 scale. Just going to use the engine, brakes and drive train from the go-cart. Got it for $100 dollars - figure it was worth to mess around with it. My girls friends daughter and I ran it around her grand-moms yard last summer. Had a blast. Now going to convert it over.
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RE: Help with a custom build large scale RC
Hey study Don't know if you found a link for the tone servo's but here it is [link]http://www.vantec.com/ssps050.htm[/link] As said earlier definetly plan on redundant failsafes. Sounds like a good plan. As far as bodies there are quite a few out there but you are looking at 1-200 hundred. [link]http://www.wcm-corp.com/bodies.htm[/link] or [link]http://www.oversizerc.com/c/179568/1/15-scale-body-shells.html[/link] I have never used these merchants so I will say beware.
Drewcrew6
Drewcrew6