AB Hammer design wheel for CLaNZeR to build

[broli]

AB I'm sorry but I still don't get it. Can you make some more drawings on what happens to those stoppers. And on what exactly is the 70? bar attached to, did you forget to draw pivot points? And is the wheel hollow or something? At 6 o'clock something strange seems to happen which changes its nature.

[CLaNZeR]

Mulling this one over in my head here.

Okay for the weights I have been looking at these for the arms:
http://www.mightonproducts.com/catalog/sash-weights-makeweights-c-1_5_17.html?osCsid=7ffc8340519183bd33c7db12c720970d

For the ratchet
http://www.mightonproducts.com/catalog/stackable-lead-weight-p-772.html

Plenty of 3/4 inch tubing here and a welder at the ready for the arms. (even though my welding skills suck!, so do not expect pretty!!)

I have some 3/4 flange bearings also here and 3/4 Steel bar.

Good idea for the bike wheel mechanism for the ratchet, or what about a simple Socket set ratchet that can be adapted?.

My concern now is the wheel, what material should it be made of?

Cheers

Sean.

Hay Sean

Most wheel work I start off with 2 ft to 3 ft wheel blanks, so lets start with a 3 ft for this one. Oversize weights are not necessary, but we want weights that are comparable to the size of the wheel tested. So lets start with 2 lb and 1/2 lb for the flip arm weights. 1/2 x 1/2  or 3/4 x 3/4 square tubing steel for the arms. I cut my own weights from larger bar stock into short cylindrical weights to keep the weights a small as possible. The pendulum weight 5 lb should work fine for this size. On this design I would use 1/2 or 3/4 all thread and flange bearings and 1/2 or 3/4 ID pipe for spacers. Knowing that most people would have trouble making a ratchet gear. dirt diggler made a good suggestion and I believe an old 10 speed bicycle  my have the gear you need in the back wheel. For the pendulum you will need flat bar stock to mounting the gear and weight on as well as the flip roller which can be a roller skate wheel mounted. I am not sure where you are out of so please send me an e-mail encase I may need to make a part for it.

This should give you a good start

[CLaNZeR]

Note here the mounting is on the flipper arms. This is to allow the best movement possible. The natural constant hitting will cause the pendulum to rock back and forth as well giving even more movement and ease of shifting possibility. The pendulum will have to be sized with the size of  weights to be used used.

Is it possible to just weld a bit of steel rod onto the arms as in picture below?

[AB Hammer]

Greetings Sean

Yes welding a thick tab would work fine.

Since I brought this one out of my book, I started having some new thoughts to add, also since I found some of my notes for this design.

The pendulum should have the same weight as the combined weight of an arm (it just caries a longer leverage)  and at the top of the pendulum an angle should be made to the 1 to 1:30 mark direction and a second roller added lower to the axle going out to the 11:00 position. There is allot more power at that point to start the flip. I was looking at a stall point. The other reason for this change is it will start rocking much better to work with the flipper arms.

You ask, My concern now is the wheel, what material should it be made of?

A good quality 3/4 plywood board or  3/4 high density counter top board. Forgive me for I forgot what its proper name is.

I would also use this type of stand http://www.youtube.com/watch?v=gaEWQr28zO4

It would help distribute the weight of the wheel to both sides.

[AB Hammer]

Good idea for the bike wheel mechanism for the ratchet, or what about a simple Socket set ratchet that can be adapted?.

The socket set may not work for is also has a higher friction in most sets and it has to go around the Axle. There are some box end ratchets that can go around the axle but you would want it to be a smooth operating one.

Well I have armour to finish and I got to get to work. It is 5:30 AM here.