Subject:
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Garage doors, partial Technic
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Newsgroups:
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lugnet.technic
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Date:
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Sat, 1 Jan 2005 19:04:23 GMT
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Viewed:
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2732 times
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Hi,
I've asked some time before about an locking mechanism for the tilting
garage doors I was 'developing'. I've solved that partially, but I still
don't like the solution. Anybody could help?
The photos are bad (I had 2 minutes to do them and the poor thing
certainly didn't like the idea about focusing on shiny red bricks ;-) )
The model is still just a prototype.
Door size: 12 studs wide, 10 studs tall (2 plates above are a hole)
Hole size (clearance): 12 studs wide - 2 studs (liftarms), height cca 7
bricks (7 & 2/3 in the center, 7 & 1/3 and 7 under the plates 2x2 with hole)
Mechanism takes additional 2 studs on outer sides, so the minimal
distance between 2 doors are 4 studs.
The rubber belts help to open fully the doors, the bush distances on
liftarms and number & strengs of bands are subjects to experiments.
http://www.kostky.org/data/pics/gd_f_halfopen.jpg
Look on half opened doors, on the sides you can see Technic liftarms 1x7
http://www.kostky.org/data/pics/gd_b_opened.jpg
Look from the inside, doors fully opened. The rubber bands are relaxed
now. The center pin is 3L.
http://www.kostky.org/data/pics/gd_b_closed.jpg
Look from the inside, doors fully closed. Rubber bands are maximally
stretched. On the top right you can see the groove for driving the doors
movement. The technic pin is no longer on tile, so it partially 'locks'.
Technic Bush on the top is packed tigtly under the red brick, so it
firmly locks the doors, but the tension is too high for my tastes (but
it doesn't break the parts). Also the doors are closed too firmly right now.
So, anybody has a better idea for the locking mechanism?
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Message has 2 Replies:
 | | Re: Garage doors, partial Technic
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| (...) [snip] (...) Do you need both rubber bands? Removing one would decrease the tension, but not provide as much help opening the door. I think the basic mechanism is very neat. ROSCO ROSCO (20 years ago, 1-Jan-05, to lugnet.technic)
| | | Re: Garage doors, partial Technic
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| Rearrange the rubberbands so that they help keeping the door closed when it has been closed a certain amount. To do this the hinge with the rubberband powered lewer needs to pass 180° which might be a problem. But if you solve that the rubberband (...) (20 years ago, 3-Jan-05, to lugnet.technic)
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