What tach do you use?

[Pumpkinguy]

I have been thru a scenario where a tachometer would make a welcome addition to my multirotor tool kit.
Hobby king has a couple.
This one, which is good to 4200 RPM's on helis or 20k RPM's on planes. I'm not understanding why it works on helis up to 4200 and planes to 20k.

http://www.hobbyking.com/hobbyking/..._Airplane_Props_0_20000RPM_US_Warehouse_.html

Then this one that is good to 99999rpm?

http://www.hobbyking.com/hobbyking/...lti_Blade_Micro_Tachometer_RU_Warehouse_.html

I am not limited to hobby king nor do I care about price. I just want something that will accurately tell me rpm 0-15k rpm.

 

[econfly]

If you don't care about price, this is a nice option. I've used it to measure RC motor RPM and it works great. The laser option is very nice and allows you to get clear of the motor / prop.

http://amzn.com/B00023RXCI

 

[Pumpkinguy]

If you don't care about price, this is a nice option. I've used it to measure RC motor RPM and it works great. The laser option is very nice and allows you to get clear of the motor / prop.

http://amzn.com/B00023RXCI

I all of a sudden care about price. Lol. $300 wow

 

[Pumpkinguy]

I just borrowed a buddies. It's a $60 model from princess auto which is Canada's version of harbor freight. It did the trick. I needed to use reflective stickers. Not ideal but I'll try making a line with a silver sharpee to see if that works.