Officer needs help
Officer needs help
(OP)
I hope I am not intruding on your group but I need assistance with electrical motors. I am a firearms instructor and want to build a laterial moving target system. What kind of electric motor do I need that I could hook up to a pully? I want to be able to reverse direction and change the speed. To draw a picture--the motor would be mounted on a wall, on the opposite wall would be a pully. A cable with a target holder would run between the motor and the pully. Again I am sorry if this is the wrong place to post this question, but I know very little about motors. Thank-you all for any assistance.





RE: Officer needs help
RE: Officer needs help
yours
RE: Officer needs help
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http://www.indelfa.com/athomeuk.html
RE: Officer needs help
http://w
RE: Officer needs help
The "Running Man" as shown in the first of machmech's links appears to be exactly what you are describing. They use a 90VDC motor and a 110VAC input DC drive. Fairly simple and inexpensive, although I would shy away fro DC just because of the maintenance issue. Given that you are military this thing will likely get more use that an occasional truip to the firing range.
You could do the same thing with a AC 3 phase 220V motor and a VFD that takes 110V 1 phase AC and puts out 220V 3 phase AC. The VFDs are fairly cheap, the motors would be slightly more than DC, but no brushes to wear out and need maintenance. Depending on how heavy your target is, I can't imagine needing anything more than 1/4HP.
Eng-Tips: Help for your job, not for your homework Read FAQ731-376
RE: Officer needs help
http://
Bottom of page.
RE: Officer needs help
RE: Officer needs help
Again thank-you all for your assistance.
RE: Officer needs help
RE: Officer needs help
I've got a few people here in our office I'd certainly like to volunteer as moving targets with the added benefit you don't need to worry about volts, torque or speed...
RE: Officer needs help
Don
RE: Officer needs help
resqcapt19-we had tried that in the past with little success. I think stevekw was on the mark (thank-you) if anyone knows of a cheap combo let me know...and please dumb it down for me, Im just a simple donut eating cop.
RE: Officer needs help
What you will need to do is determine the maximum linear speed you want the target to move and the size of the pulley to calculate the maximum shaft speed of the gearbox. The VFD will take care of everything below that.
Eng-Tips: Help for your job, not for your homework Read FAQ731-376
RE: Officer needs help
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Officer needs help
Good repeat business that was, but I felt sorry for the owners.
Eng-Tips: Help for your job, not for your homework Read FAQ731-376
RE: Officer needs help
I image jojvl32 expects just pistol ammo but maybe not.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Officer needs help
http://en.wikipedia.org/wiki/Linear_motor
AC flavored and a VFD? Add a small PLC and you could make up movement patterns.
Mike
RE: Officer needs help
Eng-Tips: Help for your job, not for your homework Read FAQ731-376
RE: Officer needs help
RE: Officer needs help
Whatever you decide on for the solution, I'm sure the company would just love the publicity of a real "bullet-proof" product. You might even get one for free with an offer of unlimited publicity!
RE: Officer needs help
1x High torque RC car motor
1x RC car gearbox (optional for lower speed and higher torque)
1x Pulley (custom fit to motor or gearbox shaft)
1x RC car proportional speed controller
1x RC car receiver/electronics box (might have speed controller onboard)
1x Inexpensive 2-ch proportional RC transmitter
1x Slightly modified 120VAC to 9-15 VDC (power supply (similar to a cell phone or radio charger)
With the exception of the pulley and the power supply all of the parts should be available at your local hobby shop or from a myriad of online shops. Just make sure that your speed controller is adequate for your motor choice. It might also be a little more inexpensive (not to mention easier) to buy a complete RC car kit and just use what you need out of it. The power supply can be bought from your local electronics or hardware store and the DC voltage and current should match the requirements of your electronics box, etc. Mounting is left to your imagination.
If the object is to simply move a paper target back and forth, it just might have the guts for it. Also, to go with the latest comments, the compact nature of the components limits unwanted target aspect.
Just a thought,
Mike
RE: Officer needs help
It worked perfectly on the opening night much to our surprize. Pushing the joystick forward opened the curtain, bringing it back closed it, all with the advantage of variable speed. I just phoned my friend to remind me what the whole thing cost, we spent about £25 on various bits and pieces etc but that was without the wheelchair parts which were donated...thats about $43.50 at todays rate. If you can get hold of an old chair I am sure with a bit of crafty thinking the idea can be adapted to power the target in the required manner. Simple, hard wearing, easy and cheap. Just remember to charge the battery overnight.
RE: Officer needs help
Sweet.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Officer needs help
Didn't "Junyard Wars" originate from your side anyway?
Eng-Tips: Help for your job, not for your homework Read FAQ731-376
RE: Officer needs help