If 1 torque ring is good.......

[Kmot]

Would 2 be better? How about 3 or 4? Seriously.........

I have all these left over torque rings. I was wondering if it would:

1) do anything

2) be better for something

3) be worse

It would be easy to stack them 2 or 3 thick.

Whaddya think?

[Patrick M]

More is better, up to a point..... more ferrous mass will control the magnetic force that "leaks" outside of the can and keep it trapped inside, but you will quickly reach a point of diminishing returns. It doesn't require a lot of mass to contain the field of ferrite or even neo magnets in our motors, 1/8" (can plus flux ring)of steel is probably more than adequate. Of course the best way to maximize the flux containment and minimize weight is with a shaped ring like those used on Astroflight motors.

[Turbosun]

Several Viper motors are sold with upto 6 layers in 3 separate rings to optimize field containment. Proof is in the numbers....80%+ efficiency for brushed motors :-) is attainable...