Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: SeagullOne on July 26, 2008, 06:05:21 PM

Title: Mounting wheelchair motors?
Post by: SeagullOne on July 26, 2008, 06:05:21 PM: Well, unfortunately I have to go back to the drawing board for my robot, Nina. The Base I built for her was good, but she was getting to be a big girl (30 lbs +) and there was no way two 12V windshield wiper motors were going to move her.

Now for the good news. I happen to have a pair to two wheelchair motors that are in good condition in my garage. They're 24 Volt, but will run only on 12 volts which is just fine. Problem: I don't know how I'm going to mount them to the new base I'm building for my robot. There don't appear to be mounting screws or anything, just this weird clamp that looks like it clamps onto a curved L-shaped round bar of some sort, which I presume is meant for a wheelchair.

I'd send a picture of what it looks like, but don't know what to paste between the two image brackets in the text of this message (a web link? A directory on my PC?).

If anyone has any experience in using these kind of motors, I'd appreciate any advice.

Thanks!
Title: Re: Mounting wheelchair motors?
Post by: airman00 on July 26, 2008, 07:46:34 PM: Definitely need pictures to answer you

You can upload to this forum ( Look in additional options) or use a service like Photobucket (what I use)
Title: Re: Mounting wheelchair motors?
Post by: SeagullOne on July 27, 2008, 02:06:59 AM: Okay, thanks, Airman00.

Here's a picture it's attatched to this post (or at least it should be...)
Title: Re: Mounting wheelchair motors?
Post by: airman00 on July 27, 2008, 06:35:39 AM: ok you do have mounting holes!

that clamp thing is attached to the motor by a bunch screws . I'm pretty sure that if you remove that clamp thing you should have mounting holes that look like this
(http://i273.photobucket.com/albums/jj202/erobot/Misc%20Pics%20for%20Tutorials/wheelchairmotors.jpg)
Title: Re: Mounting wheelchair motors?
Post by: SeagullOne on July 27, 2008, 12:29:20 PM: Ugh, (head bonk) duh! What was I thinking!

Thanks, Airman00. For some reason I was thinking that if I removed the clamp I would get into the confines of the motor. But that doesn't make sense because there's the other side of the clamp surface.

Okay now to design a base that will hold up that surface.

Thanks again!

Loren
Title: Re: Mounting wheelchair motors?
Post by: wise318 on October 13, 2011, 05:28:22 AM: Hi guys asking, what is the rpm for the wheelchair motor ?.and am i right to say i can increase
The velocity by making the wheel larger .

Thx hehhe
Just realized not properly written do it on shaky bus with iphone 4 , of course not 5 hahha
Title: Re: Mounting wheelchair motors?
Post by: newInRobotics on October 13, 2011, 05:50:50 AM: Quote from: wise318 on October 13, 2011, 05:28:22 AM
Hi guys asking if wats the rpm for moor wheel range like is it possivle to maximize the speed by having smaller wheel
What?!! Commas, periods and correct spelling would really help ;)
Title: Re: Mounting wheelchair motors?
Post by: wise318 on October 13, 2011, 08:45:40 AM: Quote from: newInRobotics on October 13, 2011, 05:50:50 AM
Quote from: wise318 on October 13, 2011, 05:28:22 AM
Hi guys asking if wats the rpm for moor wheel range like is it possivle to maximize the speed by having smaller wheel
What?!! Commas, periods and correct spelling would really help ;)

Edited
And checked
Hehheheh
Title: Re: Mounting wheelchair motors?
Post by: newInRobotics on October 13, 2011, 09:57:54 AM: Quote from: wise318 on October 13, 2011, 05:28:22 AM
Hi guys asking, what is the rpm for the wheelchair motor ?.and am i right to say i can increase
The velocity by making the wheel larger .
Different wheelchairs have different motors, hence different rpm.

By adding a wheel with bigger radius, velocity will increase only if there is enough torque. You should have a look at RPM vs Torque chart in the datasheet of the desired motor.