RVators,
If you're like me and have at least one magneto, you gotta check timing from time to time. My hangarmate has a dual mag buzz box, and I've been bumming it off him. But recently he loaned out his engine tool kit, and I've wanted to have my own buzz box. To buy one of these suckers off the shelf, the price isn't too bad, around $45-50 or so at the cheapest. But I always figured it couldn't be too complicated a circuit if you wanted to build your own.
I'm no electrical engineer, but I can solder! I was turned on to this KIT to solder up your own buzz box:
http://www.magnetotimer.com
It's basically half the cost ($28, including shipping) of an off-the-shelf product, and you get to build it yourself. I bought one, and last night I soldered it up and gave it a try. Here are some photos:
It comes 100% complete, including the molded case and everything you need. All you need is a soldering iron and solder (and a 9V battery). All of the components come taped to the diagram, pointing at exactly where they go on the board. Just solder 'em on, one by one, and then fire it up! It works great!!!
It has a buzzer and two LEDs, one for each mag (assuming you have two). It has an auto-off function. It detects a short or improper hookups. The test leads stow in the case. The thing rocks!
(I am not affiliated...just a happy customer.)
)_( Dan
RV-7 N714D (643 hours)
http://www.rvproject.com
Solder-it-yourself Mag Timing Buzz Box
Linear Mode
