motor advice

[Crafts4Me]

the forums has been helping me loads for my projects.
i am a serious hobbyist and like to stretch the limits of diorama and modeling.
electricity is still a challenge
i am trying to build a moving diorama using bicycle chains. 2 chains attached = 2 meters in a long oval of about 1 + meter length
the load for the chains is mini people and cars small people under 3" tall weighing less than 1 oz so maybe 10 people?
i need to work with 12v only. the set up and box for the depth of the motor is about 1/3/4 inches max for the motor then the shaft can have up to about 3/4 of an inch.
i tried numerous motors and failed on them all, they will not pull the chain
probably not enough power
picture of base idea with the chain attached posted below.
please advise a motoe that will fit my size and alo the speed/torque.
i do need it as slow speed as possible as the people are strolling not racing

 

[Minder]

Is that 1-3/4" dia?
If so, quite a small motor.!
You may need a high gear reduction to accomodate that size, an automotive wreckers may supply an answer e.g wiper or seat moving mechanism.
You may be hard pressed to find the right size for the load though?

 

[Crafts4Me]

hi
shaft length 3/4 " max
motor height max 1 3/4 "
total motor 2-3 "
what i tried to copy is a 30w DC 12v motor
its too big for my application
any other ideas?
width is unlimitted for the motor itself the issue is the height

 

[Martaine2005]

hi
shaft length 3/4 " max
motor height max 1 3/4 "
total motor 2-3 "
what i tried to copy is a 30w DC 12v motor
its too big for my application
any other ideas?
width is unlimitted for the motor itself the issue is the height

 

[Martaine2005]

Can you use the above for reference of what you are measuring please.

 

[Crafts4Me]

size looks gook shaft must be longer or much shorter with a screw in shaft
must be powerful enough to revolve 2 bicycle chains attached

 

[Martaine2005]

Erm, the above motor picture isn’t a suggestion for you to use. But instead a reference of where and what to measure so that we understand.
Depth and height can be misleading. So by telling us the size of the reference picture along with your motor size, we will all be on the same page

 

[Crafts4Me]

thanks
sizing will do except shaft is too short
please help figure out the strenght and power motor i need
i appreciate it
thanks

 

[Minder]

The initial break-away torque you need can be measured uding a spring scale and a defined length of an arm of some sort arm attached radially to the arm.
That motor looks a little on the weak level for what your app seems to need?

 

[Martaine2005]

Those cogs also look like not having bearings but have bushes. These might also create drag.

 

[Crafts4Me]

hi
alternate idea since what i need to pull waighs up till about 1 lb what else do you suggest? maybe aplastic bile chain or will i be able to repurpose a plastic drag chain? then the motor doesnt need tobe so strong the extra weight is the bike chains
any idea how to accomplish what i need to do in a leightweignt fashion?