Reddit reviews Neiko 20713A Digital Tachometer, Non Contact Laser Photo | 2.5 - 99,999 RPM Accuracy | Batteries Included
We found 4 Reddit comments about Neiko 20713A Digital Tachometer, Non Contact Laser Photo | 2.5 - 99,999 RPM Accuracy | Batteries Included. Here are the top ones, ranked by their Reddit score.
Highly accurate non-contact digital tachometer with high speed laser-aim operation and instant readings from 2.5 to 99,999 RPMReadings are displayed on a large, easy-to-read LCD screen; stores last, minimum, and maximum reading; features auto-zero adjustmentIncludes 24-inches of reflective tape and aim and measure design for non-contact diagnostics and measurementsCompact and lightweight, operates for hours on three included AA batteries; perfect for measuring motors, machine parts, lathes, etc.Accurate to +/- 0.05 percent and capable of measuring at a distance from 2-20 inches; RPMs measured over 1 second sampling time
Pick up a laser tachometer and measure the rpm at each speed setting and make yourself a chart
https://www.amazon.com/Neiko-20713A-Tachometer-Non-contact-Accuracy/dp/B000I5LDVC/ref=sr_1_3?ie=UTF8&qid=1482771726&sr=8-3&keywords=laser+tachometer
If you're concerned about the accuracy and repeatability of the dial (which you probably should be) you might want to pick up a cheap tachometer to determine the actual speed before plowing into the stock. If you want actual speed control, consider modding your spindle with a Super-PID.
No problem, though your mileage may vary. My router is aging, so it's not necessarily accurate. I used one of these : http://www.amazon.com/gp/product/B000I5LDVC (as I'm too cheap to buy a SuperPID)
I'd like to understand more about your motor selection and what makes you confident it's not the limiting factor. Your blower looks amazing, I could see that thing churning out a ton of air.
Another poster mentioned the Matthias Wandel video and he uses a tachomoter to measure the blade RPM. You should consider doing that to see what RPM your blades are actually getting to. He also uses a anemometer to measure the effective airflow to compare.
I'm relatively convinced if you increase the power going into the blower you can achieve the flow you need.