Homebrew PCBs

Back to the original 'train' of thought... Not
everyone has a spare valve spring in their workshop.
The rubber ball would replace the spring in a long
lever drill press.

The 'wobble' would be controlled by the type of hinge
used, not the ball or spring.

It seemed that, an auto shock absorber was a clever
use, it was a serious overkill and huge for a simple
driller with a few mm travel. Now if there were some
10 cm shock abosrbers, it would be different.

Myc


--- Stefan Trethan <stefan_trethan@...> wrote:

> On Tue, 13 Dec 2005 17:54:01 +0100, Mycroft2152
> <mycroft2152@...>  
> wrote:
> 
> > They were made by Goodrich or Firestone and called
> >
> > something like "air cushions". It's been a while
> since
> >
> > I saw the reference.
> >
> >
> > These were very large and heavy duty, used on the
> >
> > semi-trailers.
> >
> >
> > Myc
> 
> 
> But, how exactly helps that with a drill? i mean
> wouldn't they wobble  
> around a bit, break the drills?
> I can see how someone would take a shock absorber
> and modify it into a  
> short travel linear slide, but i don't see how the
> air cushions can be  
> used.
> 
> By the way, train carriages here use a similar
> system of very large  
> pneumatic cushions for shock dampening - the kind of
> train you are in  
> danger of falling asleep and missing your stop
> because the ride is so  
> smooth.
> 
> ST
> 
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