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In lugnet.cad.dat.parts, Philippe Hurbain wrote:
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In lugnet.cad.dat.parts, Paul Easter wrote:
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This part is on the Part Tracker;
http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/32278.dat
The 32278 I have has a thickness of .0309” which is approximately 19.77LDU.
Why are several of these liftarms getting changed to 18LDU?
Paul
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Liftarms are narrower than bricks, you don’t even need a caliper to see it
:
...and measured with a caliper :
- brick width: 7.8mm
- liftarm width: 7.4mm
- liftarm height: 7.8mm
As stud space = 8mm = 20ldu, we get liftarm width = 7.4/8*20 = 18.5ldu,
approximated to 18 ldu.
Of course, thick liftarm height remain 20 ldu.
Philo
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Thank you for this illustration. I see your point.
These parts should have been originally modeled rotated 90 degrees around Z so
that the liftarm “thickness” would have been the same a brick “width”.
I think I can safely say that I have rearely ever used liftarms in the manner
you illustrated.
Paul
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Thank you for this illustration. I see your point.
These parts should have been originally modeled rotated 90 degrees around Z
so that the liftarm “thickness” would have been the same a brick “width”.
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Indeed but... too late now :-(
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I think I can safely say that I have rearely ever used liftarms in the manner
you illustrated.
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...but using plates on side of liftarms can be very helpful to stiffen chassis
built with them.
Philo
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