Algodoo

I did a basic test where the simulation does not have enough frames to accurately solve the movement of a sprung mass (spazzing some circles out on a spring with low damping and high constant)

I then compared acceleration graphs of the two circles flying around at 1000+ m/s and bouncing into the ground.


It seems that the sprung mass with foceDirectSolve == True is MORE stable and reduces its speed, which is correct since both springs have slight damping.

The other sprung mass with forceDirectSolve == False is UNSTABLE. Its velocity is still increasing even though its damping is a positive value to over 3x the velocity of the other in the same frame.

We're talking extreme cases but on a micro level it adds up because the process is the same. Hopefully I didn't waste our time figuring this out. I have long been familiar with the pitfalls of forceDirectSolve == False springs with high constants and/or damping, so I know exactly where to look.

MrPigeon,

Me too, I have several other versions of this engine as well, but unfortunately I had to make stroke as small as possible to achieve the high RPM. Real life engines rev higher when their stroke is reduced as well. I will upload the original version.

Ignition is cut above 130 RPM when the ignition limiter is active.

To turn off the limiter, just click the box on the right of the screen with a cursor icon next to it (while the simulation is running.)

There is a cam gear in the block if you look closely. The ignition is triggered by cam angle with a 10 degree firing window.

If you want to round your text to a whole number, you can type something like this.

text = "rpm: " + math.toInt(scene.my.rpm)

Or if you want to choose the number of decimal places, try something like this

text = "fuel: " + math.toInt(scene.my.fuel * 100.0)/100.0

This will give you two digits after the decimal.

Thank you!

I was about 90% sure it wouldn't work

That's a very similar design! I just had the idea while looking at a basic rocket booster I made

Wow really well done!

I think it would be cool if the automatic transmission would kick down when you accelerate

Thank you! They get very jealous very easily

Thank you! Jeff will be appearing (partially) in an upcoming very fresh scene of a 1968 Camaro SS.

your videos are trippy and I love it

You have some of the most creative and well executed scene ideas Matto, your documenting videos are gems too

Nice!

Thank you Segmung, happy you enjoy the scene

Neat scene. I tried to make it work like a real eyeball with my scene response