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Subject: 
Re: Demag cc12600 Crawler Crane
Newsgroups: 
lugnet.technic, lugnet.modelteam
Date: 
Tue, 1 Apr 2003 06:10:38 GMT
Viewed: 
4319 times
  
On Tue, 01 Apr 2003, Beat Felber wrote:
In lugnet.technic, Chris Davis writes:

I can't take credit for the slew ring. I only modified it to
strengthen it. Beat Felber[1] takes the credit for this.

Thanks for mentioning it. I am always pleased to see that my ideas are of
interest to other enthusiasts out there.
I am optimistic that this turntable will handle the loads. What you have to
know is that the tiles used for the slew ring will get some scratches caused
by the movement of the rollers if the weight is too big.

Yeah.  I've had about 90lbs on the base/slew ring so far without
problems, but i can see the possibility for difficulty.

When building my Liebherr LR11200 I had the problem of building a
lightweight and strong boom as well. And I came up with a solution I am
happy with: www.fhso.ch/~felber-b/pictures/1120021b.jpg

The only thing I've seen that would be much lighter was an all axle boom


Good luck with your project.

It'll be fun if nothing else

c



Message has 2 Replies:
  Re: Demag cc12600 Crawler Crane
 
(...) The main problem with an all axle boom is that it can take almost no tension. This means for a long boom it bends under its own weight when horizontal. ROSCO (22 years ago, 1-Apr-03, to lugnet.technic, lugnet.modelteam)
  Re: Demag cc12600 Crawler Crane
 
(...) Here's a big LEGO crane with an axle boom: (URL) light, but you've less possibilities. With beams it's easier to build an extra drum in the boom for example. Dennis Bosman (22 years ago, 1-Apr-03, to lugnet.technic, lugnet.modelteam)

Message is in Reply To:
  Re: Demag cc12600 Crawler Crane
 
(...) Thanks for mentioning it. I am always pleased to see that my ideas are of interest to other enthusiasts out there. I am optimistic that this turntable will handle the loads. What you have to know is that the tiles used for the slew ring will (...) (22 years ago, 1-Apr-03, to lugnet.technic, lugnet.modelteam)

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