Algodoo

This is an interesting approach that might be useful in other applications.

Thanks for the compliment. I wrote a spreadsheet macro to generate the coordinates and then pasted them into a polygon.

Nicely Done. Impressive first upload.

Yes.

@EMKshadow: Thanks for the response and for the cycloidal rotor idea.

maybe replace

collideWater = ! collideWater;
{collideWater = false} ? {color = [0, 0, 1, 1]} : {color = [0, 0, 1, 1]}

with

e.this.collideWater ? {
e.this.collideWater = false;
e.this.color = [0, 1, 0, 1]
} : {
e.this.collideWater = true;
e.this.color = [0, 0, 1, 1]
}

Perceel positie ten opzichte van snelheid op een cirkel te maken.

Replace "{collideWater == true}" with "collideWater".
Replace "{collideWater == false}" with "! collideWater".

Algodoo does not evaluate "true == true" or "false == true"

@EMKshadow: OK. Just tell me where to find the layout and give me a few days.

Got it. I will post the result as a response to this scene.

@Lemoncreme: Looks like a close contest, but I think you and I are in the lead. If I win, then I will split the cash prize with you.

@Hellaboy - No, these would not work better than normal gears. Normal gears have rolling contact between gear teeth. These need to be driven synchronously to avoid sliding contact and high contact forces. Cycloidal rotors are typically used in rotary pumps. If I was able to gearify the perimeter correctly, then maybe they could be used as gears.

@davidz - These are not meant to be used as gears.

@Gent. Thanks. It's no coincidence that, in the roller chain version of this scene, the chain looks like the one on Lara Croft's Chopper.

http://www.algodoo.com/algobox/details.php?id=38642

I was also admiring the sprocket on the chopper and thinking about making a generator for that type of sprocket, but I think that is beyond my capabilities at this point.

@TC42: This was made before that rule was added.

@Gear97: I made a general solution in a spreadsheet with nominal radius and number of lobes as inputs. The output was datapoints in the Algadoo polygon format which I copied and pasted into a polygon saved in a .phn file.

Thanks for the comments and ratings. It took me quite a while to make this.

Thanks for the comment and ratings.

Works OK in Phun if two invisible springs on right end of zipper are set to a strength of 0.01. You can also set the motor speed to 48 rpm.

Thanks, I used the ANSI chain sprocket formulas. Resolution is 60 points per tooth when spawning, but Algodoo must lower it before drawing (worse resolution per tooth for larger sprockets). Sprocket Pitch is 0.5, roller diameter is 0.306 (like #41 chain if 1m = 1 inch).

Wow, somebody rated this a 1/10. Wish I new why. Maybe somebody from the ANSI roller chain committee or maybe a user whose computer caught fire trying to calculate a sprocket profile.

Looks good. Works well.

Very Good.

Very cool. All good. Like C best.

Were these made just using the mouse or did you need to generate or edit code?

Amused me.

Works good for me with chain hinge impulse break limit set to 0.150 Ns and dropped from 20 meters.

Very nice design. I like the fact that it uses a minimal number of parts and scripting. I also appreciate the explanation of how it works.

Nicely done.

Looks good. Works well. Thanks for the education.

Don't shoot the messenger. Whoever rated this low may not have had their settings correct. When I first tried this scene using Algodoo, everything disappeared after pressing "run". I then tried it in Phun and it worked OK. Then I wen't back to Algodoo a tried changing sim.frequency and a few other things to no avail. I then reset Algodoo and everything worked OK. Good scene. The Simpson's sea captain is a nice touch.

PS: When the scene wasn't working, the connecting rods were behaving like they were all welded together at the end opposite the piston connection.