Subject:
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Re: Parts specs
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Newsgroups:
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lugnet.technic
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Date:
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Wed, 16 Jul 2003 16:06:23 GMT
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Viewed:
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1265 times
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In lugnet.technic, Thomas Avery wrote:
> The following measurements (given in inches) were made with Starrett dial
> calipers. These are really made for 0.001" measurements, so that fourth decimal
> place isn't too accurate (say perhaps to the nearest +/- 0.0002"). Also, I
> measured 4 parts and took an average. The standard deviation is given in
> parenthesis.
>
> 1/2 Technic Peg (with stud):
>
> Length: 0.3785 (std. dev.: 3.59E-04)
> Diameter Flange: 0.2368 (std. dev.: 4.83E-04)
> Diameter Stud: 0.1929 (std. dev.: 2.06E-04)
> Diameter Shaft: 0.1843 (std. dev.: 4.92E-04)
>
> * The "flange" is the circumferential lip by the stud end; the "stud" is the
> stud on one end; the shaft is the main body of the peg
>
>
> Brick With Hole:
>
> Width: 0.3091 (std. dev.: 3.86E-04)
> Small Diameter: 0.1904 (std. dev.: 3.92E-04)
> Large Diameter: 0.2418 (std. dev.: 9.98E-04)
>
> * Small dia. is the normal hole diameter; large dia. is the "step" around the
> edge of the hole
>
> ** note that when the two parts fit together, the "flange" of the peg fits into
> the "large diameter" hole, and the "shaft" of the peg fits into the "small
> diameter" hole.
>
> I tried using the micrometer, but it tended to squash parts and consistently
> gave smaller readings. The ABS plastic is noticeably soft.
>
> Also, FYI, I've experimented with drilling holes using a variety of drill bits.
> I've found that a #11 wire guage bit produces a nice hole that's just big enough
> to allow an axle to freely rotate. You may want to mess around with different
> sizes to get different fits:
>
> 3/16" (0.1875") TOO SMALL
> 4.8mm (0.1890")
> #12 wire guage (0.1890")
> #11 wire guage (0.1910")
> 4.9mm (0.1929")
> #10 wire guage (0.1935")
> #9 wire guage (0.1960")
> 5.0mm (0.1969")
>
> The only place that I've been able to find single drill bits of these diameters
> is online at McMaster-Carr (www.mcmaster.com).
>
> Good luck!
>
> Best,
> TJ
!!!!!
Well, uh... A great big thank you is in order here :-)
GREAT BIG THANK YOU !!!!
That was everything I needed, I hope it can also help others!
Terry
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Message is in Reply To:
 | | Re: Parts specs
|
| The following measurements (given in inches) were made with Starrett dial calipers. These are really made for 0.001" measurements, so that fourth decimal place isn't too accurate (say perhaps to the nearest +/- 0.0002"). Also, I measured 4 parts and (...) (21 years ago, 15-Jul-03, to lugnet.technic)
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