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You're right, it's impossible to make working cylinders of that size. The
telescopic boom weights a lot .... But with aluminium you can create nice
boom cylinders.
Anyway, I really was amazed by his model. Before he start building it, I
said: you're crazy, you will never manage that! I speak from experience,
because I tried to build a LTM1800 (the same as the LG1550, but with a
telescopic boom). Because it's weight was too high, I decided to build the
LG1550, the latice boom version.
So Ron did a great job. It's the biggest telescopic LEGO-crane I've ever
seen and it will be the biggest for many years. Or someone must have the
guts to build a DEMAG AC650 or a Liebherr LTM1500 on scale 1:15. Just let me
know if you know someone .....
Dennis
In lugnet.modelteam, Ross Crawford writes:
> In lugnet.modelteam, Geoffrey Hyde writes:
> >
> > "Michael Edwards" <medwards@ukonline.co.uk> wrote in message
> > news:GLw3B4.3oI@lugnet.com...
> > > Oh my word!!!
> > >
> > > Is that a 5571 in the pic???? That is one big crane!!!
> >
> > It would appear so. It has been added to extensively, and is now carting a
> > large semi-trailer unit behind it, as well as having had a pneumatically
> > operated liftarm fitted to it.
> >
> > Would like to see more closeup pics of the crane, and some words from Ron on
> > how he built it. It would appear that he's also found some way of making
> > large hydraulic pistons, although if those 2x2 rounds are as porous as I
> > think they are, they're there mostly for decoration and he's either setting
> > it by hand or using something internally to achieve the effect.
>
> My guess is they're not functional - just slide in and out - the boom is lifted
> some other way (be interested in how though!).
>
> I was thinking of doing a telescopic crane like that, but use a long rack &
> pinion system disguised to look like hydraulic rams. Guess I'll just shelve
> that idea now 8?(
>
> ROSCO
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