Bruder Cat Excavator Threaded Rod

[edwalsh18]

Originally Posted by Jigglepin

What exactly are you trying to achieve? surely trying to use a motor you would need room to gear it down etc, would you attach the rod to the servo/motor and a nut to the piece you're trying to move?

Happy building!

yeah, i was thinking about running the motor straight to the threaded rod and a nut to the piece trying to move.

so finding the right motor/rod combo will be the trick. I will be looking into this more. what i will have to "research" is if the threaded rod will be the same as gearing down the motor. if a servo motor's gears gear down its motor to spin a wood auger drill bit (say for example) 1" per second then if i get a rod with x amount of TPI(thread per inch) i would need to get a motor that spins that same number of TPI per second to achieve the same as the servo.

[edwalsh18]

okay i did a search and i think i might have a good combo to try!!!
GOOD = CHEAP!!!! LOL!

here is the threaded rod, guessed at size and it says its $1.01!!! for 1 foot hehe why not?? i have done stupider things with a buck!

http://www.lowes.com/pd_160882-37672...3127881&***=32



Steelworks 3/16"Dia. x 36"L Threaded Rod

Zinc plated
Coarse thread
Threads Per Inch 20.0

okay so if it is 20 threads per inch and i want to move 1 inch per second then i need a motor that can spin 1200 rpm

20(tpi) x 60 (seconds per minute)= 1200rpm

.....

introducing the perfect motor to try!???!?!?.....



found here:
http://www.sciplus.com/category.cfm/...8/category/172

38143 6 VDC MABUCHI MOTOR

PRICE - A WHOPPING $2.95 for 3!!!!


This diminutive 6VDC Mabuchi motor draws 100 mA, approx 500mA at stall, and spins at approx 1240 rpm. The striated shaft is 1/2" long x 3/32" dia, in a housing that measures 1-3/16" x 1" dia. You get three for one great price for your science fair project, moving display, or latest invention.

might have to give it a shot. what you guys think?