Subject:
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Re: Zipper--the two-piece flying helicopter
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Newsgroups:
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lugnet.build
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Date:
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Mon, 9 Jun 2003 15:27:01 GMT
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Viewed:
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363 times
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jrl wrote:
>
> I came up with this a little while ago. It's extremely simple, but it's kind of
> fun and it's the first thing I've seen built of Legos that can actually fly!
> You can check it out here:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=45172
>
> PLMKWYT,
>
> jrl
Has anyone else tried building a LEGO launcher for this? I've tried
using a 1:125 ganged gear train made with 3 40t gears and 3 8t gears
(the final 8t gear being housed on the axle of the spinning toy), and
just cranking at one end, but the problem seems to be holding it in
place while it's gathering speed. What happens is that almost as soon
as I start to crank, the toy leaves the launcher, and then falls down
right away because it wasn't spinning fast enough to carry it anywhere.
What I know that I need is some mechanism that can hold it in place,
still allow it to spin, and when activated, *INSANTLY* releases the
axle, but haven't had much luck coming up with something that works
(although my launcher seems to work great for spinning LEGO tops made
from a short axle and a wheel hub).
Note: 1:125 gear reduction is *HUGE*... The torque you feel as you begin
to crank this can, apparently, actually snap a LEGO axle.
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Message has 1 Reply:
 | | Re: Zipper--the two-piece flying helicopter
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| "Mark Tarrabain" <markt@lynx.SPAMBLOCK.net> wrote in message news:HG800x.D34@lugnet.com... (...) kind of (...) fly! (...) As someone here mentioned; try using a wormgear. Put your outputaxel, the one with the 8t gears on a axel that goes half the (...) (21 years ago, 10-Jun-03, to lugnet.build)
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