Algodoo

The controller mirror key is set to "up" on some of your hub parts. Pressing "up" creates new mirrored parts and applies brakes. The new mirrored parts are wiping out your wheel axles. Either that or it is a new quick release mechanism that you designed.

To fix it, select everything, right click, controller..., Mirror key, click middle mouse button.

Get rid of straight laser.

In Bendy Laser:

onLaserHit: = (e)=>{scene.my.motor1 = -0.5 * (app.mousepos(0) - e.pos(0))}

In Motor:

motorSpeed = {scene.my.motor1}

works in Algodoo v1.8.5

See:

http://www.algodoo.com/algobox/details.php?id=51609

for laser interferometer that uses retro-reflectors.

Maybe because two components are performing the same function (its over-constrained). If you remove the chain or remove the guides the motion will be the same.

@bluebravo,

Works better without gravity. Probably because my scale is way off and the 63 meter chain is a little heavy. I will experiment a little more with this. Maybe I can get it to work well with gravity.

P.S. I can scale it down but the chain is still way too heavy. If I reduce its density, then it stretches too much. I tried "sim.cableMiliatryConstraint=true", but that didn't work. I'm open to suggestion.

That's too simple. I was looking for a more complicated solution. Thanks for the suggestion, but I decided not to use it because it increases chain stretch and sag. It may improve the realism, but the chain is 65 meters long, which isn't very realistic.

Thanks for asking. Flexure bearings have some advantages over conventional bearings and Algodoo does a fairly good job of modeling them. They are often used in precision instruments because of their predictable, repeatable, low friction behavior. With flexures the material is allowed to bend. I imitate flexible material by making it out of multiple segments that are connected by double hinges.

The scene is set up to show a comparison of 3 flexure hinges. The crank and connecting rods are to introduce the same amount of deflection to each flexure.

see http://en.wikipedia.org/wiki/Flexure_bearing

Thanks. It took me a while to derive equations for the optimum link lengths for the reverse "F" linkage.

Interesting. Looks and works like a real spring. Force vs. deflection is fairly linear. Also, with real coil springs the wire is in torsion, same as this spring.

@awesome person

Phun's OK. The symbol is intended to mean that the scene won't work in Phun. I'm trying to prevent Phun users the disappointment of downloading it only to find it does not work in Phun.

I always thought these were interesting in the fact that the object they lift applies the clamping force. Well done.

Очень хорошо!

Yes, it is a fast wheel, but its hard for someone running the scene to see much happening or determine the speed. You could set the hinge torque to max, toggle the brake with the enter key, and display the angular velocity on a plot. That way the user can see how fast the wheel accelerates and that the top speed is 157 rad/sec (approximately 1500 RPM).

The wheel does not always go in the same direction. There may be some way to make it always start in the same direction. That may be difficult.

You should give credit to "awesome person" for his scene which demonstrates the same effect. Another approach would be to make your scene a response to "awesome person's".

http://www.algodoo.com/algobox/details.php?id=58851

I like the fact that it can hop.

I gave you a high score on this for two reasons; first it looks real cool without using any textures and secondly I can't figure out how you got the laser alignment so accurate.

Regarding laser alignment:
I can't think of an easy way to check the laser alignment, since I don't know any easy way of panning 24 km. I made a car and drove there, but even that took a while. If you read e.pos(1) on the mirror and a target 24 km away, the laser position and rotation adjustment would need to be super precise. Am I missing something? Is there an easy way to set the laser alignment?

P.S. One way of setting the laser alignment could be to have a level laser shine back at the mirror and hit a target where the present laser is then use the e.normal and e.pos info for the laser angle and position.

P.P.S. OK, I'm an idiot. After playing with it, I can see that there is an extremely simple way of setting the laser alignment. The rating still stands (couldn't change it even if I wanted too )

Simple method: Set mirror exactly at 15 degrees from vertical, set laser exactly at 30 degrees from horizontal. Fine position laser with arrow keys if beam height is important.

Another method: Put laser and mirror in approximate positions. Copy laser and mirror to clipboard. Paste into text editor. Change mirror rotation to be 1/2 the laser rotation. You may have to subtract the laser rotation from pi first. Copy everything from the text editor and paste back into scene.

A third method is to have a horizontal laser shine back at the mirror and hit a target where the present laser is then use the e.normal and e.pos info for the laser angle and position. Laser angle would be the arc tangent of (e.normal(1)/e.normal(0)).

Interesting approach.

Awsome

Good. Works like the real thing.

Nice. Took me a while to find the connection between the back wheel and the gear ring.

Good. Needs spark, but I'm not exactly sure how to do that.

A jet engine (thruster) powered mouse trap may not be too realistic, but in Algodoo world anything is possible.

Works well, but looks like a Honda advertisement.

Show us the mating gear or how its used.

Interesting. It took me a little while to see why it returns to equilibrium with equal weights. You could glue a pointer on the horizontal beam that points to a ruler indicating the amount of imbalance if the weights are not the same. You could add damping to the scale by increasing the air friction multiplier for the horizontal beams.

Very good both artistically and mechanically.

Thanks. This was my first encounter with (readable(owner)).

Nice demonstration. Thanks.

Interesting and fun to watch.

Nice. I like how you track and display the Gas Energy value.