Subject:
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Re: 1 motor 2 speed transmission
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Newsgroups:
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lugnet.technic
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Date:
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Wed, 20 Sep 2000 17:57:14 GMT
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Viewed:
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4722 times
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Hey, Check out my page www.lcs.net/users/oglewood/
Go under "lego Ideas" and click on the two speed transmission. Also, I have
tried it with four speeds (R-1-2-3) but it gets too big after that. Hope
that helps!
Adam
"Bob Fay" <rfay@we.mediaone.net> wrote in message
news:G16zIL.IJo@lugnet.com...
> I just finished a recreation of your transmission. Great piece of
> engineering. Thanks for sharing your work. I hope I can work this into one
> of my machines.
>
> --
> Bob Fay
> rfay@we.mediaone.net
>
> The Shop
> http://users5.50megs.com/bobfay
>
> http://www.geocities.com/Heartland/Bluffs/7900/
> "Amnon Silverstein" <amnon@best.com> wrote in message
> news:G1640L.Ls8@lugnet.com...
> > Here is a transmission I've been working on. It has two forward speeds • 5:1
> and
> > 1:3. If you run the motor one way, you get forward low gear. If you run • the
> > motor the other way, you get forward high gear.
> > I am using a differental to split the two directions of rotation onto • two
> > intermediate shafts. I am also using 24 tooth gears as pawls. I have the • clear
> > holes on live shafts, and the slight drag makes them engage positively • when the
> > shaft rotates in the right direction. The two shafts then go through two
> > different ratios of gear trains, and then get recombined with a second
> > differential.
> > The top picture shows the input side. The input goes through a pawl that • is
> > shown engaged with a 24 tg that prevents that shaft from rotating • counter
> > clockwise. Under it is a little 8tg that transfers power to the big • 40tg.
> This
> > is the powertrain for counterclockwise rotation, which is 5:1 reduction.
> > The middle picture shows the splitting differential to the right, and • the
> > combining differential to the left.
> > The bottom picture shows the output side, and the power train for • clockwise
> > power input. The top 24 tg is a pawl on the input shaft that engages • when
> the
> > input is clockwise. The pair of 8tg reverse the rotation to the • combining
> > diferential, so this direction gives a ratio of 1:3
> > With a second motor, I think the design could be extended to 3 forward • speeds
> > and one reverse.
> >
> > http://www.best.com/~amnon/Homepage/Games/LegoTranny.jpg
> >
> > Send me mail with the word LEGO a the start of the subject to get • through
> my
> > spam filter.
>
>
>
>
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Message has 1 Reply:
 | | Re: 1 motor 2 speed transmission
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| This is another nice piece of work. I did not understand it until I downloaded the Dat file and opened it. Very nice! This is another useable design. Thanks for posting it. A top view would be really cool on your website. -- Bob Fay (...) (26 years ago, 21-Sep-00, to lugnet.technic)
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Message is in Reply To:
| | Re: 1 motor 2 speed transmission
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| I just finished a recreation of your transmission. Great piece of engineering. Thanks for sharing your work. I hope I can work this into one of my machines. -- Bob Fay rfay@we.mediaone.net The Shop (URL) Silverstein" <amnon@best.com> wrote in (...) (26 years ago, 20-Sep-00, to lugnet.technic)
|
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