Zeroing in on Bessler's wheel

[Sam Peppiatt]

jb,
Thanks for a response. One thing is for sure, I never learn---------------------Sam

[SHADOW]

Bonjour Sam!
Pour l'instant j'ai ajouter une roue d'embiellage pour palier à la contrainte sur la seconde bascule.
le dispositif reste à améliorer par une étude cinématique.

Hi Sam!
For the moment I have added a wheel of embiellage for bearing to the constraint on the second rocking.
the device remains to be improved by a kinematic study.

[Sam Peppiatt]

SHADOW!!
It's good just the way you have it. I can see you know how it works. I'm great full for your help-------------Sam

ETA, I think the top one should be a little flatter, then they would alternate back and forth. The problem is I don't know what the graphics will do.

[SHADOW]

Bonjour Sam,
Comment avez vous déterminé la proportion du diamètre des rouleaux par rapport aux diamètres de anneaux de roulement?

Hi Sam,
How did you determine the proportion of roller diameter to bearing ring diameters?

[Sam Peppiatt]

Hi SHADOW,
A good question and an important one as well. I could only guess. I think that the ratio I have now is a good trade off, which is about 1.4 , 11.5 inches for the ring and, 8 inches for the rollers. If the roller is smaller you get more movement of the toggle but, then you lose weight for the roller. I don't know what's best. However, It may not be critical for the sim----------------------Sam

FWEIW, I made the horizontal rollers smaller,(7"). By being smaller they will roll easier and roll farther. Again, I doubt if it would matter to the sim. And I put them farther apart, to get more leverage on the wheel.

ETA, I should point out that, the Ring & Rollers or rollers never lose height. It's true they shift up and down inside of the ring but, always remain balanced with respect to the wheel.

[Sam Peppiatt]

A minor update,
Finally, I have the rollers running straight. Still a little noise but, not too bad. Also, I had to make the cross-bar so that it would get a little bit longer and shorter, as they,(the rollers),rolled around but, still be ridged, or nearly so, in other directions.

It's not as easy as might think---------------Sam

[Sam Peppiatt]

For any one interested,
The rollers that drive the wheel are called the slave rollers. The rollers that drive them, I refer to as the balanced rollers, because they are always balanced. The slaves are roughly half the weight of the balanced rollers and, drive the wheel when they are more or less horizontal, for about 90 degrees of rotation. Then for the next 90 degrees every thing resets,(all 4 are balanced). Then the slaves drive for another 90 degrees.

The ring of the slave rollers is like an endless inclined plane. They don't have to be lifted up, just roll them out ward for the wheel to turn. It's very spontaneous, as soon as they start to roll the wheel starts to turn. The farther they roll out, the steeper the inclined plane gets, which will take more force. Not sure how far they will roll; to be determined,(TBD). All and all, I think it is a pretty good system. Right now I'm working on the ring Assy. for the slave rollers. Should finish them today-----------------Sam

[Sam Peppiatt]

Completed the cross-bar for the small / slave rollers. It had to be slightly telescoping so that it could lengthen and shorten do to irregularities in the rings. It is 34 inches long and takes @ 5 lbs. to roll them 1/2 inch, not sure what that might correspond to in torque. The rollers are 7 lbs., 7 inches dia.

On ward to the toggle assemblies---------------Sam

[SHADOW]

Bonjour Sam,
Je vois que vous avez constaté le soucis de mise au point!
Nous croisons les doigts pour votre réussite.

Hi Sam,
I see you have noticed the trouble of focusing!
We cross our fingers for your success.

[Sam Peppiatt]

Hi SHADOW!!
Thanks, thanks a lot. Seams like the slave rollers are behaving better than there big brothers, thank God for that. I'm using two toggles; while one is driving, the other one is resetting. Which takes advantage of the M.A. of the toggle. at the beginning of the drive stroke.

The toggle(s) connects to a short lever to double the displacement of it. The connection of it to the cross-bar. is completed by a spring, for more flexibility. I think it will work but, who knows---------------Sam

[Sam Peppiatt]

SHADOW,
I forgot to ask, what you meant by focusing? Also, what did your Sim testing reveal? If any thing--Sam

[Robinhood46]

Sam,
Shadow didn't mean focusing, that is a translation error, he said "mise au point" which correctly translated in this context means, final adjustments, fine tuning, additional modifications to achieve your objective.

[Sam Peppiatt]

Robinhood,
I see, thanks. That makes more sense. He's right about that--------------Sam

[Sam Peppiatt]

The toggles are on, now for the springs.
Looks as if they will provide a compression stroke, not unlike the compression stroke on a gasoline engine, in advance of the side, or drive stroke of the slave rollers. It might work out good, or not at all, not sure which--------Sam

[Sam Peppiatt]

Problems,
Problems with the toggle; not working. I'll replace it with a bell-crank. Maybe that will work. If there is a wrong way to do some thing I will find it----------------------Sam