Current work

[Jon J Hutton]

First I am not so egotistical to think this post should get anyone's attention.

I thought I would go ahead and post a photo of the current path of weights and c.o.m. just to document this...... I am scared to death to build it.

Has anyone else been there?

The math proves this is possible. I can not see why this would not work.....but this board is full of failures just like the start of this.

[johannesbender]

is the center of rotation of the design on 0,0 xy?

[Jon J Hutton]

Yes, it sure is.

[agor95]

I think you are on the right track - so far.

All the Best

[Jon J Hutton]

Thanks agor95,

I'm shifting a weight 1/16" . That causes the com to move 12" immediately (similar to what a scissor mech does but its not a storksbill that I'm using)causing the wheel to be out of ballance. I'm horrible at explaining things but i think that is accurate to say.
I just need to build this thing, at the very least it could be a novel machine.

[agor95]

You are not alone in trying to describe a design.

It is hard too imagine a design's dynamics, create the engineering either drawn or built.
As well as support the design with written and mathematical descriptions.

However it is the only way too work through the process.

All the Best

[Jon J Hutton]

Journal update: Finally have all the weights acting on one side with out counter torque, with the com higher than the x axis. Have ordered the robotic parts to start the build.

[silent]

I look forward to updates on your build. Sounds promising!

silent

[agor95]

similar to what a scissor mech' does but its not a storkbill that I'm using

I have imagined a telescopic aerial like equivalent to the storkbill mech'.

[Jon J Hutton]

Will see.... this could be a big fail, since the sumation of forces always cancel. But, this is what I have so far. There is no counter torque acting on these weights.

[Jon J Hutton]

The parts for the build arrived. Incredibly simple project.

[Fletcher]

Where did you source your parts (robotic and other) from Jon ?

They didn't take long at all to arrive.

Best of luck !

[Jon J Hutton]

Hey Fletcher, good to hear from you again, hope all is well.

Yep we have a real aggressive robotics store here in the mountains of Guatemala who thinks they are Amazon in delivery. Very surprised.

[Fletcher]

Nice .. the CoM Offset is easy to see in your pics but the 1/16" weight shift to keep the circulation going and restoration of GPE a lot harder, naturally.

Meccano sets are good for modeling, if you can get your hands on one in the mountains ;7)

Good luck with the build !

[Jon J Hutton]

Meccano, now I'm dreaming of the day.

Correct on the weight shift..... it is actually less than 1/16....
So lets see to move 2 lbs 1/16 of an inch, that is (((2/33000)/12)/16)=0.000000316 hp or (×745.69) 0.000235382 watts plus resistance. Here is where i completely loose how to calculate the rest. The weight is actually moving 2 feet from the axle for a half rotation then resets 1/16 of an inch. That sounds like a contradiction but it's not.... it is a pure oob wheel, not inertia.... so we will see.