On Nov 1, 3:14*pm, Darryl Ramm wrote:
On Nov 1, 9:37*am, Dave Nadler wrote:





On Nov 1, 12:33*pm, Eric Greenwell wrote:

Darryl Ramm wrote:
I think Bumper LLC ought to work on the Cobra Jack problem. I'd pay
hundreds of dollars for a high quality jack that just worked reliably.

Of course if we worked with the Minden airport to evict Bumper LLC
from its current corporate headquarters its gliders would actually had
to be assembled to fly (therefore using the hydraulic jack) then this
would probably get fixed very quickly.

Perhaps the hydraulic jack could be removed and this electric jack
inserted in it's place, while retaining the rest of the ramp mechanical
system.

http://www.northerntool.com/webapp/w...roduct_6970_20....

If it won't fit in the space of the hydraulic cylinder, it could be
mounted just ahead/behind of the ramp mechanism.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly

* "A Guide to Self-launching Sailplane Operation" atwww.motorglider.org

I dunno, lot's of people are very suspicious of electric things ;-)
See ya, Dave

No think this is great, just think of all the things possible. We
could have ILEC make a controller. It could be user configurable with
different jack heights as a rigging aid. You could download that
configuration from a PC...

--

Sigh. I'd like a simple mechanical system. Hydraulic is the right
approach. Just implemented badly.

Darryl- Hide quoted text -

- Show quoted text -

My newish Komet trailer came with a very elegant manual jack using a
linear actuator setup (two small acme screw jacks connected by a
common crank). Avoids the mechanical advantage issues of a scissors
jack and the reliability/maintenance issues of the hydraulic.

Unfortunately, I let the jack go for a ratcheted scissors jack with a
foot pedal that's never worked right. Sigh.

P3