Miles wrote:I'm sure you could get the motors for less than $100 for quantity.
I don't think they have gears, exactly, they're epicyclic friction drives and I'm not sure how much more torque they could handle....
Tell me who need such motors in quantity - if they aren't upgreadable?
Upradable motor should work fine at low voltages - for work at relatively low load.
After ugrade at higer voltage should work robust at heavy loads too.
This is what i call flexibility.
Flexible motor would work fine at extremly different conditions, so it should be more wanted and as a result should be easy to buy and resell.
Buying them for quantity would be related with low risk as soon or later all surplus would be reselled without loss.
My point is: lets start to looking for the best candidate for flexible motor - instead looking for specialized one for narrow loads range.