Rev counter
- Thread starter Glynn
- Start date
Dolly Llama
Number 5
do you mean a tachometer to measure engine revolutions per minute (rpm)?
If so, the Tiny Tach I mentioned in a thread below should do the trick for you.
It has a lead wire that simply wraps around a plug wire to measure RPMs
http://www.tinytach.com/tinytach/index.php
..L.T.A.
If so, the Tiny Tach I mentioned in a thread below should do the trick for you.
It has a lead wire that simply wraps around a plug wire to measure RPMs
http://www.tinytach.com/tinytach/index.php
..L.T.A.
Shawn Forsythe
RIP
Matt is right. The number of cylinders is irrelevant. The difference between the two types of TinyTachs is the translation of the count.
One type is for the engine that sparks on every rotation, the other type is for the engine that only sparks on the height of the compression stroke.
Engines that do not have distributors, or other devices for initiating spark every other rotation, use a "wasted spark" on the top of the exhaust stroke, in that they spark the plugs every rotation. An engine with a distributed spark only sparks the plugs at the moment of firing on the power stroke.
Most of the two cylinder engines used on TM's have a wasted spark, and therefore use the "two stroke" model, which Matt references. The three cylinder and four cylinder units on the market, generally use an actual distributor device, and therefore would use the "four stroke" model.
One type is for the engine that sparks on every rotation, the other type is for the engine that only sparks on the height of the compression stroke.
Engines that do not have distributors, or other devices for initiating spark every other rotation, use a "wasted spark" on the top of the exhaust stroke, in that they spark the plugs every rotation. An engine with a distributed spark only sparks the plugs at the moment of firing on the power stroke.
Most of the two cylinder engines used on TM's have a wasted spark, and therefore use the "two stroke" model, which Matt references. The three cylinder and four cylinder units on the market, generally use an actual distributor device, and therefore would use the "four stroke" model.
