Subject:
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Re: new jack
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Newsgroups:
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lugnet.technic
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Date:
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Wed, 5 Mar 2003 16:49:11 GMT
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Viewed:
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1642 times
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> I have seen one which had
> very large and bold arrows indicating which direction was forward, a matter
> of some importance I imagine :-)
When you have the turet turned 180 degrees and you need to move the machine
the arrows help because the controlls in the basket for foward and reverse will
work oppositly from the operator's perpesctive.
>
> I assume that those machines are designed to stay balanced in the event of a
> tyre puncture, but I always wondered about driving over a pothole or
> something similar; presumably there is a large degree of balance designed in
> to prevent the machine toppling in such an event. Presumably they look more
> precarious than they are!
No suspesnion. Very bumpy going over rail road tracks!!!! The base is heavy
with weight of (in my case batteries etc.) and ballast. If there is a tip over
danger an alarm (beep!) will sound. Stopping and starting can be enough to
sound it.
>
> To clarify the notion of simultaneous movement I mentioned, I saw an example
> this morning where the two boom sections similar to that designed by Pixel
> was driven by a single hydraulic cylinder, and linkages kept the two parts
> at equal angles to the horizontal. The two independent movements is probably
> smarter looking though. • It is good when they keep you on the level. :-)
>
> Jennifer
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Message has 1 Reply:
 | | Re: new jack
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| This is to fix up the end of my previous message. It was to say at the bottom "It is good when they keep you on the level". But it appears I put it in with Jennifer's writing. Sorry. To add to this the sections of the boom give you not only vertical (...) (22 years ago, 5-Mar-03, to lugnet.technic)
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Message is in Reply To:
| | Re: new jack
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| "Paul Krieg" <pdkrieg@epix.net> wrote in message (...) Thanks Paul, interesting indeed! I had no idea that those machines were difficult to drive in a straight line, although I have seen one which had very large and bold arrows indicating which (...) (22 years ago, 5-Mar-03, to lugnet.technic)
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