New permanent magnet motor on youtube from Roobert33

[maw2432]

Longer the cam is, more work must be done in order to move. Think at disc break on the car...bigger is, less friction you need to break. Make it shorter...you need 2 cm up-down on magnet... shorter the arm is, less you spend. Make a 2 cm bump on the axis and an arm from top to the bump

You may have a point here.    I was thinking the pivot point was at the point where the cam was touching/pushing the rotatable bearing at the top of the robert33 device. (when the cam pushes the top magnet away.)   Thus would have had more leverage.     Sorry if this is not the case and miss-led anyone in there design replications.    I think leverage is really key to this working. 

The force applied (at end points of the lever) is proportional to the ratio of the length of the lever arm measured between the fulcrum (pivoting point) and application point of the force applied at each end of the lever.  (per Wikipedia)


I think we need some more comments on where the pivoting points are.


Bill

   

[lumen]

I am doing some work on a related project and even though the cam is important, it cannot work! All the work gained in pulling the magnets closer will always take the same work to pull them away again. If there was enough energy to push the attracting magnet away, then the rotor would already have enough energy to pull itself away.

The rotor only has two magnets, the two in the center of the start of the "V" track. The rest are steel. The bar stator magnet on top, is magnetized through the faces and not end to end. This is an entirely different type of operation.
Is this possible?

   

[nievesoliveras]

@lumen

Use two small bar magnets on the same bar. One facing the north down and the other facing south down.

It is supposed that the weight of the cam starting at the top initiates the turning of the rotor.
The magnet activated at the bottom adds speed to the rotor and after lifting the bar the cam weight start the movement again.

Jesus

[Nihilanth]

I was planning on building one of these myself at some point, but right now I'm pretty lacking in materials & tools to work with, so hopefully one of you can try this yourselves.

I thought of using two bar magnets as a lever escapement so that as one magnet gets repelled from the 'speed bump' the magnet on other end of the lever gets pushed towards the v-gate, accelerating the rotor until it does the same. It wouldn't be physically touching the rotor of course, but hopefully you get the gist of the idea.

[nievesoliveras]

Nice idea!

Jesus