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Complete amateur here with a product idea and a need to find out whether it can work in theory.

I need to push a lever vertically down through 90 degrees and have a lateral arm swing horizontally through 180 degrees (and with greater speed than lever one going down).

Is this possible and how should I describe it/specify it for to a prototyping company?

Any advice gratefully received!

PS: Apologies, gentlemen. Here's a sort of diagram.

enter image description here

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  • $\begingroup$ A diagram of the proposed system would help $\endgroup$ – Fred Apr 26 '20 at 11:23
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enter image description here

Figure 1. Bevel gears provide a simple means of turning rotational motion at right angles. Image source: What is a bevel gear and how it works.

In your case you want a 1:2 ratio so your input would be on the large gear and output on small gear.

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  • $\begingroup$ Thank you! So, if I wanted the fast gear to move three times as fast, it would be 1:3, and so forth? Can I presume on your good nature for a further calculation? If the second arm - the horizontal arm - was attached to a racket 18 inches long and I wanted to move the tip of the head of that racket at 50mph - what gear ratio would I need to be able to do that, using my own hand/arm to move the first lever? $\endgroup$ – SimonCabro Apr 26 '20 at 8:22
  • $\begingroup$ That's correct. Don't forget to "accept" if your question has been answered satisfactorily but wait a day or two to encourage other answers which may give you other alternatives. $\endgroup$ – Transistor Apr 26 '20 at 8:25
  • $\begingroup$ This is a good answer, but since the person is asking such a simple question, you might want to provide a bit more detail about implementation. Your picture doesn’t include shafts or bearings necessary to make it work. $\endgroup$ – Eric S Apr 26 '20 at 15:13
  • $\begingroup$ @Eric: Feel free ... You could spend an hour doing a CAD sketch and, without any better specifications from the OP, completely miss the mark. $\endgroup$ – Transistor Apr 26 '20 at 15:21
  • $\begingroup$ I was thinking maybe just finding a different picture such as 123rf.com/… $\endgroup$ – Eric S Apr 27 '20 at 1:37

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