Originally Posted by IntegrityHndywrk
Couldn't you just do a strap down with the motor running at zero pitch and 100% throttle? Either way the optical tachs i've been looking at won't do 5 bladed. I was hoping i could use this one with a single piece of tape on 1 blade tip or something while doing the strap down thing.
Yes you would be able to measure head speed on the bench with the main blades or without the main blades. I personally just take the blades off just to be safe. And this tachometer it doesn't care how many blades you have. In a way, it only counts how many times it sees the reflective tape. For the price, its a good tool to have.