On Sep 2, 2:25 pm, "Robert Swinney" wrote:
Starbolins, betraying lack of knowledge but seeming to come on as "informed", blurted "Dude! Your
expecting way too much out of a cheap DC motor and an even cheaper chopper drive."

It would appear to me conditions you stated re. regulation, are normal for the Dremel tool. Without
knowing the amount of "strain" (load ??) placed on the tool the speed reduction you see is probably
normal.

Bob (knows how to spell "you're") Swinney

wrote in message

oups.com...

I don't think there are enough dremel users who are unhappy with it to
justify dremel changing it.

It is Easy to do with a comparator circuit feeding back to the speed
control and i dont think much more than a dual op amp but there is not
a lot of extra space in a dremel to shoehorn a circuit in and i don't
think its worth it for the effort involved.

the cost of the "constant speed" dremel would be negligible too at the
manufacturing side

Frankly it works ok for me when i need it just the way it is