LEGO TECHNIC : 14644


Technic / 14644	14643 \| 14645

Subject:	Re: Help please: I'm trying to get two outputs from one shaft
Newsgroups:	lugnet.technic
Date:	Tue, 27 Sep 2005 21:04:23 GMT
Viewed:	3737 times

In lugnet.technic, Tony Hafner wrote: > I have one shaft that will be turned by a motor in either direction. And I want > to get two different outputs, based on which direction the motor is turning. > > When the Input shaft turns clockwise, Output 1 turns and Output 2 does not. > When the Input shaft turns counter-clockwise, Output 2 turns and Output 1 does > not. Hi Tony, Here is something I put together real fast during my lunch break: http://wegmuller.org/v-web/gallery/OneInTwoOut The movies are quite big (4MB a piece) but they show clearly how this thing works... Notice that it works in any position as the mechanism is balanced. An other approach to this is the "traveling worm gear": it relies on the fact that Lego worm gear slide freely along cross axles. If you're interested, I'll put one together tonight... Speaking of worm gears: if you need the non-rotating output to be locked when it is not driven, you can always use a worm gear between this mechanism and the application point. Greetings, David Wegmuller

Message has 2 Replies:

		Re: Help please: I'm trying to get two outputs from one shaft
(...) This is great stuff, and will probably work for my application. It's mechanically much simpler than a differential with rachets. Thanks!! (...) I think I can picture how that works: You have a 4-stud-long box with a shaft running lengthwise (...) (19 years ago, 27-Sep-05, to lugnet.technic)

		Re: Help please: I'm trying to get two outputs from one shaft
(...) That looks a very nice simple solution to the problem, the simple solutions are usually the best! I will certainly be using it to give more function from the auxiliary output of the RC car unit. Tim (19 years ago, 28-Sep-05, to lugnet.technic)

Message is in Reply To:

		Help please: I'm trying to get two outputs from one shaft
I have one shaft that will be turned by a motor in either direction. And I want to get two different outputs, based on which direction the motor is turning. When the Input shaft turns clockwise, Output 1 turns and Output 2 does not. When the Input (...) (19 years ago, 27-Sep-05, to lugnet.technic)

7 Messages in This Thread:

Entire Thread on One Page:: Nested: All | Brief | Compact | Dots
Linear: All | Brief | Compact
This Message and its Replies on One Page:: Nested: All | Brief | Compact | Dots
Linear: All | Brief | Compact

Custom Search