Author Topic: DC Motor (Read 4948 times)

gan02340765 · « **on:** January 29, 2008, 04:08:16 AM »

any DC motor suggestion that have stall torque 10Kg above expect AME motor, coz its speed too slow...

SmAsH · « **Reply #1 on:** January 29, 2008, 04:13:13 AM »

10KG!!! are you serious!?

oyyy ive never heard of such a thing.

gan02340765 · « **Reply #2 on:** January 29, 2008, 05:06:44 AM »

really one ...the competiton quite stupid one ...10Kg and 50cm*50cm
quite big and heavy...i need a high torque and speed DC motor ..

gamefreak · « **Reply #3 on:** January 29, 2008, 06:39:53 AM »

lol, too slow, high torque is going to be slow, you could try getting two 5 kg motors and have them run the same load.

paulstreats · « **Reply #4 on:** January 29, 2008, 07:10:29 AM »

What about motors in washing machines?

SmAsH · « **Reply #5 on:** January 29, 2008, 02:54:11 PM »

good point...or a treadmill..theyre fast and can move someone up to 140KG

ed1380 · « **Reply #6 on:** January 29, 2008, 02:55:55 PM »

those motors (washing machine, rteadmill) are AC. a powerful dc motor will be something from a wheelchair motor to a windshield wiper motor

airman00 · « **Reply #7 on:** January 29, 2008, 06:18:40 PM »

wheelchair motors are pretty inexpensive if you search on ebay and are very easy to mount

gan02340765 · « **Reply #8 on:** January 30, 2008, 03:02:11 AM »

first, the motor requirement voltage shall not more than 12v , coz i use mircocontroller to preform the DC motor...
second,the motor shall be high torque and the speed shall be faster than power window..
third, if u all been join competition before, the motor mz be easy to mount.
can i have a sample picture of wheel chair motor? i didnt see it before ...
thanks

ed1380 · « **Reply #9 on:** January 30, 2008, 03:06:20 PM »

it doesnt matter if the motor is over 12v. you'd just need a 24v h-dridge or higher if necessary

you cant have torque and speed.
torque, speed, price-. you can only pick 2
or
torque, speed, 12v- pick 2

you can make motor mount easily. just get some flexible metal and clamp it around the motor

wheelchair motor pic- use google

gan02340765 · « **Reply #10 on:** January 31, 2008, 12:29:11 AM »

i think i need the torque most, coz the robot 10Kg ...cheap DC motor cannot support it ...that why i need advise from u all, maybe some of you use this kind of motor before..
what flexible metal do u introduce me to use to clamp the shaft??

ed1380 · « **Reply #11 on:** January 31, 2008, 12:35:43 AM »

strip of sheet metal.

windshield wiper motor might do for a 10kg robot. others will know more than me about that

gan02340765 · « **Reply #12 on:** January 31, 2008, 10:30:03 AM »

can u tell me is what kind of metal ? Al ? Cu ?
hmm ..thank for ur advice...i try and use that motor ..

ed1380 · « **Reply #13 on:** January 31, 2008, 03:14:16 PM »

aluminum probably no, but any kind of piece of flexible metal about 1/16" thick

heres an interesing link http://www.loganbot.com/bot_tips.html#drive

gan02340765 · « **Reply #14 on:** January 31, 2008, 07:47:41 PM »

thank guy..i didnt try to use any metal to clamp the shaft and the the wheel...before that, i jz drill a hole between it and lock it...

ed1380 · « **Reply #15 on:** January 31, 2008, 08:12:46 PM »

huh? the sheet metal is to mount the motor to the base/frame

gan02340765 · « **Reply #16 on:** February 01, 2008, 05:53:27 AM »

i cant get ur point lah... any picture to show me ?

ed1380 · « **Reply #17 on:** February 02, 2008, 01:05:01 AM »

i cant find one. even though i saw it not too long ago.
hope this helps.

SmAsH · « **Reply #18 on:** February 02, 2008, 01:22:05 AM »

is that a brace?

ed1380 · « **Reply #19 on:** February 02, 2008, 02:09:38 AM »

picture is side view. green part is the sheet metal i've been discussing. it's supposed to be tight around the motor

SmAsH · « **Reply #20 on:** February 02, 2008, 03:13:55 AM »

ohh ok well if it were me i would put a smidch of super glue just for extra hold.

gan02340765 · « **Reply #21 on:** February 02, 2008, 07:58:34 AM »

it quite a good idea also... i would like to try it if i have chance...
anyway , thanks ...

ed1380 · « **Reply #22 on:** February 02, 2008, 09:35:07 AM »

haha was looking through the forum and theer was a thread about a robot.
guess what kind of motor mounts it had

Admin · « **Reply #23 on:** February 03, 2008, 05:16:52 PM »

Quote

any DC motor suggestion that have stall torque 10Kg above

Quote

coz the robot 10Kg

what really shocks me is that not one person has noticed that 10kg is a weight - not a torque!

This is a FAQ question:
http://www.societyofrobots.com/robot_faq.shtml#select_motor

All of you really need to read these two tutorials:
http://www.societyofrobots.com/mechanics_statics.shtml
http://www.societyofrobots.com/mechanics_dynamics.shtml

And then use this calculator to determine what motor is good enough for your robot
http://www.societyofrobots.com/RMF_calculator.shtml

Lastly, gan02340765, its a bit difficult to read what you write. Pls dun randomly abbr ur q's.

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Author Topic: DC Motor (Read 4948 times)

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