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Mechanics and Construction => Mechanics and Construction => Topic started by: blackbeard on August 01, 2010, 12:28:34 PM

Title: Antweight-beetleweight motor types and speeds?
Post by: blackbeard on August 01, 2010, 12:28:34 PM

so the next project i have settled on (since i have most of the parts) is an antweight to beetleweight spinner combat robot. my biggest question is what sort of drive motors should i use? the weapon motor is probably going to be a brushless airplane motor but all in all I'd like to figure that part out on my own. from fights I've seen the biggest threat to a spinner (asside from another spinner) is a faster, more maneuverable wedge and the most successful spinners I've seen are the ones that can dodge a charging wedge and munch at the sides. this can also be a drawback since a spinner can be a bit awkward to steer and can lead to running into pits and hazards. also the dome and weapon motor of the spinner will likely take allot of weight and the motors would need to be light and efficient at the same time. so my question is what kind of motor should i use for the drive motors? what sort of speed should i be looking for taking the average ring size into account?

Title: Re: Antweight-beetleweight motor types and speeds?
Post by: blackbeard on August 09, 2010, 06:54:00 AM

67 views and no replies bump

Title: Re: Antweight-beetleweight motor types and speeds?
Post by: Team Orr on August 09, 2010, 09:22:33 AM

hey dude

you could use servos in their normal form however from what you said they may be a bit on the slow side for avoiding rammers/wedges. you could of course "speed hack" them for a bit of extra power, however doing this you will lose a considerable amount of torque, heres a video:

How to speed hack a servo (http://www.youtube.com/watch?v=wCx52hT4pu8#)

or alternativly you could use geared motors (having ungeared motors would mean designing and building your own gearbox = not good) for example the copal motors are good for your use:

http://www.robotmarketplace.com/products/0-COPAL50-SH.html (http://www.robotmarketplace.com/products/0-COPAL50-SH.html)
http://www.robotmarketplace.com/products/0-COPAL60.html (http://www.robotmarketplace.com/products/0-COPAL60.html)
http://www.robotmarketplace.com/products/0-COPAL50-12.html (http://www.robotmarketplace.com/products/0-COPAL50-12.html)
http://www.robotmarketplace.com/products/0-COPAL50-6.html (http://www.robotmarketplace.com/products/0-COPAL50-6.html)
http://www.robotmarketplace.com/products/0-COPAL30.html (http://www.robotmarketplace.com/products/0-COPAL30.html)

or alternativly the microgear range:

http://www.robotmarketplace.com/products/0-GM13A.html (http://www.robotmarketplace.com/products/0-GM13A.html)
http://www.robotmarketplace.com/products/IL-SAN50.html (http://www.robotmarketplace.com/products/IL-SAN50.html)
http://www.robotmarketplace.com/products/0-KG12T300.html (http://www.robotmarketplace.com/products/0-KG12T300.html)
http://www.robotmarketplace.com/products/0-KG12T50.html (http://www.robotmarketplace.com/products/0-KG12T50.html)
http://www.robotmarketplace.com/products/0-GM11A.html (http://www.robotmarketplace.com/products/0-GM11A.html)
http://www.robotmarketplace.com/products/0-GM18.html (http://www.robotmarketplace.com/products/0-GM18.html)
http://www.robotmarketplace.com/products/0-GM19.html (http://www.robotmarketplace.com/products/0-GM19.html)
http://www.robotmarketplace.com/products/IL-GMS100.html (http://www.robotmarketplace.com/products/IL-GMS100.html)
http://www.robotmarketplace.com/products/0-GM14A.html (http://www.robotmarketplace.com/products/0-GM14A.html)

and then you need to pick a speed controller:

http://www.robotmarketplace.com/products/speed_controllers_main.html (http://www.robotmarketplace.com/products/speed_controllers_main.html)

(wow long list)

keep in mind the http://en.wikipedia.org/wiki/Revolutions_per_minute (http://en.wikipedia.org/wiki/Revolutions_per_minute) of the motor!

whatever one you go for make sure it compliments your design, good luck!

jack

 

Title: Re: Antweight-beetleweight motor types and speeds?
Post by: Conscripted on August 12, 2010, 07:05:43 AM

My suggestion is to figure out how fast you want your bot to move. Then figure out how big your wheels can be. That will get you into the ball park of how fast the output shaft of your gear motor will need to turn. That should give you an idea what your looking for. Then it's just a matter of finding motors that have the torque and current requirements that will work for your project. Let us know how it goes.

Conscripted