Forgotten purchases

[woodydel]

Just spent some time in the cabinets of my shed looking for steering parts. Didn't find what I needed but did find something others might consider acquiring. In this day and age we believe the only way to measure RPM of our engines is with something electronic. If you buy one of these, you can be assured of accurate measurement of your engines RPM. Made in Germany and proven accurate and reliable by test.

It's called a SIROMETER. Before you click the link most will say what the heck is that.

I'm pretty sure I made this purchase 10 years ago or better and forgot.

SIROMETER LINK:

http://www.treysit.com/16.html

[jimbob200521]

Now that is neat looking! Ever hook it up and use it?

[j4c11]

I also have one of those sitting in a box, it takes a little bit of practice getting used to it and getting the wire in resonance and learning to spot that moment. I find my $12 photo tach much more convenient to use though, but if I ever ran out of batteries or something I would have no problem using the sirometer.

Originally Posted by jimbob200521

Now that is neat looking! Ever hook it up and use it?

It doesn't "hook up" to anything! You just place it against the engine while it's running and turn the dial. As the dial turns the wire sticks out more and more at some point it will be in resonance with the frequency of the engine and will start to vibrate with a lot of amplitude. At that point you read the number on the dial and that's the RPM. Very neat device.

[dvogtvpe]

you can buy them from Briggs & Stratton , they call them vibra tac , pretty much all I use on singles. mine looks just like the photo

[dvogtvpe]

if you use it enough you can tell if the engine has balance gears or not.

[j4c11]

Originally Posted by dvogtvpe

you can buy them from Briggs & Stratton , they call them vibrometers , pretty much all I use on singles. mine looks just like the photo

Are they usable on engines with more than one cylinder? I thought not , but the website has some large machinery listed on the examples page.

[bocephus1991]

I remember using one of those in ag mechanics in high school! That's been a day or two ago! I outta get one.

[timbo2]

I think they work on 1 or 2 cylinder engines. I use mine alot, got it a couple years ago.
It's all I have to measure RPM. pretty cool once you get the hang of it.

[dvogtvpe]

I've never used it on anything over a twin.

[bocephus1991]

All our high school ag mech class was 1,2 cyl engines 2 and 4 cycle. Automotive did the larger engines.