Wheel chair motors, batteries and wheels

[daliad100]

Re: Wheel chair motors, batteries and wheels

Your robot would go three times as fast but have 1/3 the torque and less pushing power

[mattsdragons]

Re: Wheel chair motors, batteries and wheels

its hard, i need some more speed out of the motor (probably) yet i also need torque.

what is the best to have more of? torque or speed?

[jonny]

Re: Wheel chair motors, batteries and wheels

well if you don't have enough torque you won't be able to move. best to aim for 10mph speed (unless it's a ram bot) and hopefully you'll have the torque to move the robot around

[mattsdragons]

Re: Wheel chair motors, batteries and wheels

its a single motord wheel chair from a rascel 205 with diff and top speed at maximum 154kg load of 7 miles per hour running at 12v but ill be running at 18v in the bot

[jonny]

Re: Wheel chair motors, batteries and wheels

well if it has a 7mph top speed at 12v giving it 18v will make it go at 1.5 times the speed so you'll get 10.5mph out of it anyway

[blazerbotics]

Re: Wheel chair motors, batteries and wheels

how are you going to use the motor/gearbox if its only a single motor?

[mattsdragons]

Re: Wheel chair motors, batteries and wheels

its a single motor yet with the diff its able to drive both motors and can turn on the spot, i really dont know how it works but it does

[mattsdragons]

Re: Wheel chair motors, batteries and wheels

And now thinking logically I have realised that the motors is completely useless since It only does foward and back!!!!

I got free wheels basically and that's it. I need to somehow find another of the same motor of a rascal 205 and then strip the diff off it to leave me with just the two motors or downswing on the price, I might just go the old bosch 705w route

Where is the best place to buy 750's?

[jonny]

Re: Wheel chair motors, batteries and wheels

http://www.ellis-components.co.uk/

i beleive they sell them

[mattsdragons]

Re: Wheel chair motors, batteries and wheels

I'll give them a ring tomorow and see what price they are

[blazerbotics]

Re: Wheel chair motors, batteries and wheels

last i heard they were £114 +Vat/delivery but that was a year or so ago, and prices appear to have gone up since then.

[mattsdragons]

Re: Wheel chair motors, batteries and wheels

Might have to try for second hand then

[Anttazz]

Re: Wheel chair motors, batteries and wheels

Presumably while this was a wheelchair it could turn, and not just go back and forward so how is it managing that? Can the diff lock one of the wheels to allow it to turn?

Also what about the batteries are they no use to you. According to the spec sheet they are sealed lead acid so can be used? handy if your looking to keep the price down.

Just use the bottom half of the wheelchair and put a wedge at the front. I'll battle you with Scar and we can have a very slow and boring battle with no damage done to one another whatsoever