Scotch Engine 430 RPM

[a Mammoth]

I started playing around with a scotch yoke for a bounce engine. http://en.wikipedia.org/wiki/Scotch_yoke
After realizing that at any sort of RPM the yoke will become disconnected, I realized I could ditch the piston entirely and just have circles on a crankshaft. With less moving parts, it can rev much higher. So, after a bit of tuning, I made this:

Scotch Engine 430 RPM

a Mammoth

Rating:
Filesize: 66.62 kB
Comments: 1
Ratings: 1

S to Start
This can rev to about 45 rad/s mean on a given integral, which is 430 RPM.
Power band starts at about 15 rad/s up to the red line at about 45 rad/s.

[Ivanlul]

The problem with this engine is that it cannot push anything. I faced the same problem when I was building engines and it bothered me. You have to have near-constant piston collisions in order to actually move something heavy. With your engine the pistons will get "stuck" in the middle if stress is applied and the engine won't produce any energy. You have to connect pistons in order to actually make a movable engine.

[a Mammoth]

The problem with this engine is that it cannot push anything. I faced the same problem when I was building engines and it bothered me. You have to have near-constant piston collisions in order to actually move something heavy. With your engine the pistons will get "stuck" in the middle if stress is applied and the engine won't produce any energy. You have to connect pistons in order to actually make a movable engine.

When attached to something and vibrating, or at any angle other than 0, circles will never be permanently stuck. As far as producing power, I haven't extensively tested this model, but in this scene:

cart pull contest entry

a Mammoth

Rating:
Filesize: 42.18 kB
Comments: 0
Ratings: 2

it was able to provide enough power to have a time of 29 seconds in the best of circumstances. Even then, it had no starter, and had an initial 10 rad/s when ideally it would be 15 rad/s.

I should look more carefully at tuning this though.

[Nxdt]

This is really nice. If you increase the sim.frequency it runs even faster!