Curious device

[gaz1]

That's not related to this device, Gaz

take a look at the piston on steam generator if you want less wear and tear its simple yet effective

now fit a rocker bar to the piston and this will give you movement of the rods far better on any coil

whilst yours will give wear and tear on the center pin its not effective or econimical whilst a piston build would provide far better movement and over 2 coils or one long coil

 

[8ob]

I'm simply asking you to examine the drawing and comment on it intelligently.

Wrong forum

Bob

 

[Blobber]

Im up for it, get it built!

 

[Guineafowl]

Oh, certainly energy will need to be put in to turn the rotor. The device won't run itself (not in this form anyway).

If you build it without the swash cylinder, you’ll get some interesting twitching from the lever arms, but with it, won’t you need to build in some sort of timing, so you don’t get an ‘in’ stroke when you need an ‘out’, and vice versa?

What are you going to call it - variable reluctance isolated dual lever arm swash rotor transmission?

 

[Hotstuff]

What a brilliant thread; it reminds me of a tv show back in the late 70’s “It’s patently obvious”.

This looks very similar to the magnetic resistance system on my spin bike.

As the magnets are drawn closer to the disc/flywheel, it has a braking effect without making any physical contact.

The Swash drum seems to be a clever system to split one rotational movement into two equal opposing linear forces.

I hope I’ve not just stated the screamingly obvious and you were looking for something more.

 

[Prajna]

If you build it without the swash cylinder, you’ll get some interesting twitching from the lever arms, but with it, won’t you need to build in some sort of timing, so you don’t get an ‘in’ stroke when you need an ‘out’, and vice versa?

What are you going to call it - variable reluctance isolated dual lever arm swash rotor transmission?

Well, I am rather pleased with the swash cylinder. It is a simple way to restrict the movement of the levers so the magnets don't crash into the rotor and swash plates have long been used for power transmission. It elegantly converts reciprocal motion into rotary motion. Of course any aspect of this could be redesigned but this is simple and easy to understand.

 

[Prajna]

What a brilliant thread; it reminds me of a tv show back in the late 70’s “It’s patently obvious”.

This looks very similar to the magnetic resistance system on my spin bike.

As the magnets are drawn closer to the disc/flywheel, it has a braking effect without making any physical contact.

The Swash drum seems to be a clever system to split one rotational movement into two opposing linear forces.

I hope I’ve not just stated the screamingly obvious and you were looking for something more.

No, that's a fine contribution, @Hotstuff. I'm kinda hoping someone with a knowledge of esoteric electric motors will jump in and say something like, "oh, that's how such and such motor works." and go on to explain the inductance drag, kinda thing.

 

[Prajna]

What a brilliant thread; it reminds me of a tv show back in the late 70’s “It’s patently obvious”.

This looks very similar to the magnetic resistance system on my spin bike.

As the magnets are drawn closer to the disc/flywheel, it has a braking effect without making any physical contact.

The Swash drum seems to be a clever system to split one rotational movement into two equal opposing linear forces.

I hope I’ve not just stated the screamingly obvious and you were looking for something more.

Actually, in this configuration the swash cylinder is combining two reciprocal motions into a rotating motion.

 

[Prajna]

Im up for it, get it built!

No workshop and it's raining for the next week but I'm tempted to wander down to FabLab.

 

[gaz1]

prajna sorry for the long youtube video

take a good look at the slide bars and see how fast they move whilst in use

now the front one slides less and can be used to slide 2 slide bars again to create opposite reciprication one up one down will slide both bars together

it also means less wear and tear on parts but remember you can only get so many slide in and out with these models similar to the planing tables
a dual piston method is better

 

[minimutly]

That's not related to this device, Gaz

Nothing new there...

 

[slim_boy_fat]

What are you going to call it

A 'push me, pull you'...?

 

[gaz1]

Nothing new there...

if you had a metal shaper machine you might agree with me

the way hes doing it will push the slide bars outward as it closes like a scissor jack

the shaper uses a motor to a wheel and moves a slide bar connected to a push rod to slide the bar back and forth

this video show the ram slides and stroke of the shaper

whilst this annimation shows the wheel and crank arm moving to slide the ram

its the crank arm connected to the slide bar that pushes the ram head forward and reverse

it can be done with 2 crank arms connected too 2 slide arms that

 

[Prajna]

if you had a metal shaper machine you might agree with me

the way hes doing it will push the slide bars outward as it closes like a scissor jack

the shaper uses a motor to a wheel and moves a slide bar connected to a push rod to slide the bar back and forth

this video show the ram slides and stroke of the shaper

whilst this annimation shows the wheel and crank arm moving to slide the ram

its the crank arm connected to the slide bar that pushes the ram head forward and reverse

it can be done with 2 crank arms connected too 2 slide arms that

@gaz1, I'm not asking for improvements to the design. Rather I am hoping for suggestions as to how the inductive drag on the disc relates to the power output of the system. We can optimise the design later, if it proves interesting but for now the design is simply for the purpose of demonstrating what I'm talking about.

 

[addjunkie]

A 'push me, pull you'...?

Ive fields full of them!

 

[Morris]

How big are the gaps between the rotor and magnets? Magnetism follows a square law so efficiency will be poor with anything other than minimal clearance.

 

[Prajna]

How big are the gaps between the rotor and magnets? Magnetism follows a square law so efficiency will be poor with anything other than minimal clearance.

That's yet to be determined, @Morris. First I'd like to get to grips with how energy is conserved in the system and once I have a handle on that I can look at what's optimal in terms of disc geometry and magnet layout.

 

[Onoff]

The mechanical drag is too great

Not if you make it from unobtainium!

 

[Pond frog]

Is that the energy crisis solved then ? Does it mean I can turn my heating up

 

[Prajna]

Not if you make it from unobtainium!

How did you figure out that I'm planning to build it from that?!