Measuring RPMs: Single Cylinder Two-Stroke & Other

   / Measuring RPMs: Single Cylinder Two-Stroke & Other #1  

Pks

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Joined
Apr 6, 2000
Messages
773
Location
Saline, Michigan
Tractor
Kubota L3700SU, Cub Cadet 1430, Hustler Super-Z 66in, Vermeer 1250
I am looking for ways to measure the RPMs of single cylinder, two-stroke dirt bike engines. I've seen a wire/reed style that looked like it might work for diesels as well.

Does anyone have experience with them or seen this sort of thing?

Thanks.
 
   / Measuring RPMs: Single Cylinder Two-Stroke & Other #2  
Are you looking for a tach to mount on the bike, or just a test instrument?
 
   / Measuring RPMs: Single Cylinder Two-Stroke & Other #3  
Give Autometer a call. www.autometer.com
They may have an inductive pickup type tach that you can use
on the bike.
If you are looking for a test type tool I would suggest a good
automotive dwell type tach.

Zach
 
   / Measuring RPMs: Single Cylinder Two-Stroke & Other #4  
Most lawnmower shops sell a cheap 'easy'- watch battery powered inductive pickup tach.

We old 6v tractor users love 'em.

Soundguy
 
   / Measuring RPMs: Single Cylinder Two-Stroke & Other
  • Thread Starter
#5  
I'm really looking for a test tach, but if I can find one that will mount on the bars, then I'll consider it too.

What I'm after is to perform exhaust sound tests at specified RPM levels. I can make a db meter using a cassette tape recorder that has a db input meter. But motocross bikes don't have tachs and I need one to show me the engine speed.

Thanks for the replies. I'll accept any hints and ideas you may have.
 
   / Measuring RPMs: Single Cylinder Two-Stroke & Other #6  
Check with your local Stihl dealer or other chainsaw dealer. I picked up one from my Stihl dealer and it does 2 and 4 cycle engines and has a digital display. I think it was $ 105.

Solo
 

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