BuzzSaw wheel

[Matos de Matos]

Hi everybody:

I come across the BuzzSaw wheel and found some information, but I did not found anything similar to my pinion so, here it is, anxious to hear you comments.
I found this video YouTube - Preston Stroud - BuzzSaw Gravity Wheel Replication - 13-Feb-10 and some pictures below, where I have my view of the direction.
In the video seems to me that the rotation shall go the other way and the red wheel shall have twice the angular velocity, and be connected thru the gears to rotate together.
Looking at the weights seems that they had two wheels with the weights rolling between them.
It’s a double parametric pumping, because we decrease the radius when gravity is against and we double the velocity, reducing the time exposure to gravity.
The descending on the yellow wheel is slower, more gravity, and for longer time. The yellow wheel is the drive, so shall be a heavy flywheel, and the pushed red wheel shall be as light as possible.
With slow rpm, tuned to the right time of the weights rolling, it shall accelerate until the velocity is higher that the gravity rolling of the weights.

Thank you
David

[Matos de Matos]

I think you are right about there being a faster velocity on the inner, smaller wheel. Therefore, if it reloades the larger wheel faster, then it moving at a lesser time interval and the loading slots are only partially filled with weights due to the larger wheel taking a longer time interval to bring the weights to the bottom. This in itself though may not be enough to keep the wheel turning. It may require another system, perhaps a pendulum to add more torque or to keep both wheels from obtaining resonance,which could equalize the power distribution between the two.Just thinking out loud.Good Luck Stealth

Hi Stealth:

Thank you for putting some money on it.

The wheels will start rotation right away, because it is unbalanced, with 4 weights coming down on the yellow wheel and two going up on the red wheel.
Because they are on the same shaft, (with ½ ratios, the red will rotate 2X the yellow) the yellow will “torque” the red wheel. If we keep the unbalance, it will keep rotating.
The distance in the slots for the rolling, is essential. I think that longer slots are better. More in, less radius on the red wheel.
The 4 weights will have enough momentum to impair a double velocity on the 2 weights going up? May be!
You are saying something like the two pendulums of Bessler wheel drawing?
May need it, and resonance probably can be avoid with a very slow rotation, to give time for he weights o roll in the slots.

I realize that we only need 4 slots on the red wheel because the ½ ratios, the slots will align all the time.
I would love to see this prototyped.

Thank you
David

[Matos de Matos]

I just have too many projects going on right now to even attempt to replicate the buzzsaw machine. Maybe later on in the fall I will have more free time. I feel like this design has a legitimate shot at being a selfrunning gravity machine.The theory behind this machine is sound, if I can only get it to regulate the timing which may or may not be right. It may take a different gear setup than what has been used. Others here may have more time and material, and could replicate this faster than I can.The design is not all that complicated, but the timing may be the key to sucess.Good Luck. Stealth

Hi Stealth:

Thank you for planning a prototype for the near future and encouraging everybody to do the same.
Unfortunately I do not have the conditions for physical prototyping, so I am doing a ACAD drawing. I will post it soon
Thank you
David

[Matos de Matos]

Hi everybody

With the linear slots of Stealth´s device, and the double wheel Buzzsaw ideas here it is my version of the Buzzsaw
Other than the 1:2 ratios, may be necessary, with the increase of the numbers of slots in the wheels and finding the right shift time.
It is unbalanced for sure, but the ratio, may balance it.
Thank you
David

[Matos de Matos]

Although this is not my device, it may actually work the way you have it designed. As far as I know, no one has sucessfully replicared this one or Bessler's wheel. Both have been tried many times throughout the years. Now that we have computer programs, it should be feasible to design and replicate both of these wheels. Some time testing different animated designs should reveal whether or not they are correct. If I only had the time to replicate now. Maybe later.Good Luck. Stealth

Hi Stealth:

You are right, with so much software and computer wizards, we could model some of these unsolved machines.
I believe that a forum, that supply on line software to model physics ideas, in which the participants could introduce their inputs directly in the models posted, may work, and probably, the administrators make money.
Some open source forum similar to Home | InnoCentive.

Thank you
David

[Matos de Matos]

Hi Guys:

The last picture shows a 180º rotation for red and 90º for the yellow wheel, my apologies but is 360º for the red wheel and 180º for the yellow.

Thank you
David

[Harvey]

Hi Dave, it has been a long day for me today - but I did have a look at your Buzzsaw Wheel here.

I a progression in the even numbered frames and frames 1,3 &7 seem to be the same time sequence for each with different numbering. Frame 5 seems to show some transition though.

I thought about using Microsoft's free Gif animator to watch the sequence in a flip book fashion until I realized the sequence is not complete.

One important thing that stands out here is the lifting from BDC of Weight (1) from frame 7 to frame 8 (which I presume passes through the same pathway as Weight (3) did in frame 5. The reason that lifting is important is because it is done by the yellow wheel and directly impacts the leverage of the other weights on the yellow wheel.

I see that the red wheel is to have a ratio from red drive wheel (1) and yellow drive wheel (2) which I suppose is a 2:1 ratio from your comments.

So we have two weights being lifted at all times on the Red wheel, and two weights doing the driving on the yellow wheel at all times. However, the red wheel is being moved twice as fast. We also have a transition period where a weight is being lifted by the yellow wheel part of the time and also where weights are at TDC or BDC and have no tangent force by gravity. At BDC we do have tangent force by momentum with that weight.

You may want to look at the quasi-analysis I did in the other Buzzsaw thread where I investigated having the inner wheel drive the outer wheel with the 2:1 being the inner wheel moving slower and the outer wheel moving faster and the inner wheel housing eight weights to the outer wheel housing 4. It was a bit surprising that the small differential in diameter had such an interesting effect on the potential energy involved. It would be very interesting to integrate all locations of that scenario and see what it tells us.

Cheers!