|
|
|
|
|
|
|
|
|
Nick
Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
|
Here is another site to grab some ideas from:
http://www.rubbee.co.uk/
The Smartdrive and this Rubee are made to fit many different vehicles but with something you make for Kristy, you just have to fit one chair so you can take a lot of short-cuts. If you went for friction drive, you could either have two motors and a joystick steering, or you could have one central motor with a diff and steer by hand braking one wheel or the other.
I think we all understand the the motor / tank steer method better, but the single motor option would probably be cheaper. Either way, I keen to help build something!
I agree that a sensored motor would be the best technical solution, but that puts the price up compared to Hobbyking parts. With the huge chair wheels and the low speed needed, a brushless motor will need massive gear reduction, so its probably going to work OK without sensors.
Talking of gearing, what's the size of the chair wheels and the reduction in the winch gearbox?
|
Thu Sep 19, 2013 1:06 pm |
|
|
|
|
|
|
|
|