Motor speed controller for Kally 1SM?

[Ken S]

My favorite tachometer is: both. Either works well. I do not understand why the Cyber Tech seemed to act up initially; it works fine now. The Harbor Freight tach is larger and twice the cost, not what one would think for Harbor Freight.

I don't think most users need two tachs. I will just keep both for a "second opinion". I have often stated in posts, "there is no bad choice, just one choice which may fit your needs better".

Ken