Subject:
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Help needed on gear spacing, and another question
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Newsgroups:
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lugnet.technic
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Date:
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Fri, 3 Apr 2009 16:31:18 GMT
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Viewed:
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19940 times
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Hi all,
I have two requests; any help would be appreciated.
First question: what is the proper spacing to use when using a worm gear to
drive a rack gear?
I have (supposing studs up) a horizontal axle with a standard worm gear (4716)
on the axle. I also have a series of rack gears (3743) that I want to engage
the worm gear. I want the rack gears to sit still so that the worm gear moves
back and forth on the axle as the axle turns.
I am having trouble getting the axle at the right height relative to the rack.
What appears to be the right thing (a modified 1x2 plate with a vertical
two-hole technic beam, 32530) is just a fraction too tight.
Any thoughts on better spacing?
Second question, which I posted to .parts a couple days ago and got no
responses, so I will post here seeing as the ultimate goal is a technic
creation:
I am in need of a collection (probably 10 sets) of 1x1 tiles with the numerals 0
through 9 on them. Bricklink seems to show me that the numerals 1-4 exist but
not the others.
There seem to be some 2x2 tiles with all the digits available but no 1x1's. Is
this true or am I just not looking in the right places?
Thanks for your input,
Rafe
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Message has 2 Replies:
 | | Re: Help needed on gear spacing, and another question
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| (...) Technic worm gears are not really made to mesh with the 1x4 racks. The problem is that the racks do not have any pitch (the gear teeth are perpendicular to the longitudinal axis of the rack). The worm gear, by definition, does have a pitch. In (...) (15 years ago, 3-Apr-09, to lugnet.technic, FTX)
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