1) know the frequency of your light source, i.e. the bulb that lets you see or indeed the frequency of daylight.When the pistons look as if they are stationary, that is a simple multiple of the fundamental frequency of that light source.
or
2) if you have a musical ear.marry the highest tone of the engine to a known musical note.hence you will know the frequency thus rpm.
Cool, you can make a fuel powered blender
wolf69a 1 year ago
sehr schon,gute gemacht
sajmon37 1 year ago
you will know the frequency at that point of stationary pistons.Not necessarily the highest rpm.
bignaughtydog 2 years ago
2 solutions to rpm.
1) know the frequency of your light source, i.e. the bulb that lets you see or indeed the frequency of daylight.When the pistons look as if they are stationary, that is a simple multiple of the fundamental frequency of that light source.
or
2) if you have a musical ear.marry the highest tone of the engine to a known musical note.hence you will know the frequency thus rpm.
great vid
bignaughtydog 2 years ago
Great job!
RamonaSteam 3 years ago
Interesting! You could test the RPMs with a laser tachometer...
jamespetts2 3 years ago
Thanks James.
Got any ideas for a do-it-yourself tach project?
TFL1945 3 years ago
Buy a laser tachometer on Ebay.
rangerssteamtoys 2 years ago
Thought they would have been more expensive. Probably can't build for the price. Thanks.
TFL1945 2 years ago
shit amazingly cool
plavins1 4 years ago
well done :)
matthewpeter 4 years ago