prondzy 3,881 #1 Posted October 9, 2016 So what Tachometer are you using to set rpm on your engines? Pros, cons.... let's hear about it. Share this post Link to post Share on other sites
DennisThornton 4,769 #2 Posted October 9, 2016 Been using a cheap Chinese optical. Just put a dab of white paint or even a piece of tape on the fan screen, aim and press the trigger. Share this post Link to post Share on other sites
Aldon 4,826 #3 Posted October 9, 2016 (edited) Same here. Bought mine on Amazon. picjed one that had reasonable reviews and right budget Edited October 9, 2016 by Aldon Share this post Link to post Share on other sites
fast88pu 3,324 #4 Posted October 19, 2016 The human ear. It works wonders lol 1 Share this post Link to post Share on other sites
