MT12

[justsomeone]

What would be the purpose of the ramp in Mt12?

Wouldn't the weights, as they pass 6 O'clock, automatically be felt at the

pivot point without the aid of the ramp?

[triplock]

You're right. The ramp itself serves no purpose whatsoever. It was probably placed there so that the snap shot view looked more pleasing in terms of creating an almost vertical split of weights inboard and outboard.

I could expand further as to the other failings of this design and why it is instantly recogniseable as a 'keel' concept, but I think that would insult your intelligence. ;-)

Chris

[justsomeone]

Actually the ramp itself would take some of the weight off the left side of the wheel. How much?

[Trevor Lyn Whatford]

Hi Justsomeone,

not a lot and it is replaced with a uphill pull, top ramps work better for removing weight on the ascending side and are good at removing negative leverage, if the ramp is flat and level it would not take a lot of energy to pull a weight over it, check out the my post on Path_finders thread.

Spooky or what!

Regards Trevor

Edit, its Nic's thread, A Simple Cam, sorry, but its a Path_finder post.

[daxwc]

Bessler quote:

and thereby cause the wheel to shake a great deal.

Obvious he tested it and the ramp was doing something by his own admission.


tks

[broli]

The ramp is usefull if you consider something else, the centripetal/centrifugal force.

[LustInBlack]

Or you use the ramp as a pivot point for a leverage system..

*hint.

[Trevor Lyn Whatford]

Hi Justsomeone, and all,

MT 12, first remove the chains and then remove the ramp, replace the ramp with a spring loaded paddle wheel to start work on the levers at about 10 o’clock, the paddle wheel would be on its own mounting and driven off the main wheel but a little bit faster, there would be three advantages of the paddle wheel, one as discussed here it would take weight of the ascending side, two when the weighted levers are moving faster than the wheel it also loses its effective weight and that lose is better on the ascending side as the weight will now do more work for longer on the descending side starting at about 12 o’clock, if the lever fall on the descending side then that weight would be lost during it fall, three a lot of the paddle wheels energy would be put back into the main wheel as a push.

All of these options have been discussed on this forum some where so I have just added them together to a suitable leverage system the best lever system will need to be looked into but this one is a good start point

The big question is will it work? And does anyone want to take it on board?

I have look at this system for 360 racket levers but the geometry is wrong, the levers only work for less than 45 degrees before returning to the middle, I remembered your post here and thought it will work better on this type of lever.

Regards Trevor

[Tarsier79]

From your description I think it probably won't.

Remember though, it is not just degrees of torque, but the force of the torque for the degrees, or the time the torque is applied in both directions that will determine a working wheel. The rotating force a weight applies to the wheel at any particular moment in time, is the leverage it applies(and the further it will fall).

Geared correctly, a 1kg weight 1 foot from the axle, can balance a 1kg weight 2 feet from the axle on a wheel. OB isn't the only driving force.(as you have found out with your V wheel)

Cheers

Kaine

[Trevor Lyn Whatford]

Hi Kaine,

weights working longer on the descending side is the main objective with extra distance from the axle, most lever system fail as they reset ( fall ) on the descending side losing out of balance torque in the fall, this reset and lever movement must be done on the ascending side for any chance for it to work, while the weights are on the paddle wheel the imbalance of the main wheel is increased, you have to look at the imbalance of the main wheel compered to the imbalance and negative gearing ratio of the paddle wheel, these would need to be looked into before a build. It would be interesting for someone to do a Sim on it. I will do a drawing when I get the time.

Regards Trevor

[murilo]

This ramp will be a huge goal if the design would be a 3D wheel.
YESSSSS... a huge goal!!!
( still in my menu.)
Best!
Muliro