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Subject: 
Re: Props for Hovercraft
Newsgroups: 
lugnet.technic
Date: 
Fri, 7 Feb 2003 22:50:42 GMT
Viewed: 
1767 times
  
In lugnet.technic, Mark Haye writes:
Yes, I had tried that.  I was unable to prevent all the rotation at the friction pin,
and even a small amount of movement there caused significant wobble/binding.

Well I did a little test, heres the pics:

http://www.brickshelf.com/gallery/RoscoHead/etc/prop/dcp_1409.jpg
http://www.brickshelf.com/gallery/RoscoHead/etc/prop/dcp_1410.jpg
http://www.brickshelf.com/gallery/RoscoHead/etc/prop/dcp_1411.jpg

Note that the propeller shaft is cylindrical, not "x" axle-shape, so
friction is much greater than standard axle.

It worked reasonably well, even with no lubrication and old batteries. I
reckon with some lube, and maybe even a more powerful motor, it would work
really well.

Oh, and running the axle vertically runs better than horizontally, so even
better for hovercraft 8?)

ROSCO



Message has 2 Replies:
  Re: Props for Hovercraft
 
(...) Nice design. Oh man, the design of the 24t gear at the back of this propeler is realy lame. That whole part is very un-legoish. 1) Perhaps you could use the old friction connector instead of the new one: i.e. part 4459 instead of part 2780. (...) (21 years ago, 8-Feb-03, to lugnet.technic)
  Re: Props for Hovercraft
 
(...) friction pin, (...) Perhaps the z24-sandwich can be wrapped with conveyor chain links? /Tobbe (21 years ago, 10-Feb-03, to lugnet.technic)

Message is in Reply To:
  Re: Props for Hovercraft
 
Yes, I had tried that. I was unable to prevent all the rotation at the friction pin, and even a small amount of movement there caused significant wobble/binding. Mark Haye "Ross Crawford" <rcrawford@csi.com> wrote in message (...) (21 years ago, 7-Feb-03, to lugnet.technic)

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