Hey Mike.... I had forgot all about my solution to the eye's.... ( infared
cells ) I stuck them in the attic looking at each other behind an access
panel... Thanks for the reminder.... I hope they never go bad I'd have a
hell of a time just remembering where I put them....LOL
K
----- Original Message -----
From: "Mike Sloane" <msloane@att.net>
To: "shop-talk" <shop-talk@autox.team.net>
Sent: Sunday, November 24, 2002 5:54 AM
Subject: Re: Gate openrs
>
> Adapting a chain type garage door opener to your type of gate would be a
> fairly straightforward operation; farmers do it all the time to avoid
> getting on and off tractors while moving feed etc. in and out of cattle
> lots. They are set up with lugs on the chain that hit limit switches for
> end of travel. The chains are not continuous, since they only have to
> run one cycle of about 7', but I am sure that they use standard link
> chain that you would buy at MSC or Grainger. Since your gate is wider
> than 7', you would need to lengthen the strut supporting the pulleys,
> but that is just a matter of finding some similar scrap steel and
> bolting/welding it up and adding sufficient chain in the middle of the
> existing chain. Because of the additional length of the boom/strut, you
> might want to support it mid span. The only problem I see is
> weatherproofing the housing, as they are, of course, intended for inside
> use. The release mechanism is a pull rope that disconnects the follower
> from the chain. There are also photocell devices in all modern openers
> which are supposed to prevent the door from closing when objects are
> blocking the path. They would have to be dealt with somehow, but
> probably with a little ingenuity.
>
> I would imagine that a screw type (Genie) opener would also work, but
> you would have to purchase another screw and weld it on to the original
> to get the additional length. That would be a more elegant solution, but
> might require more sophisticated machining than the chain drive approach.
>
> Mike
>
> Bob Nogueira wrote:
> > Folks,
> > Need to run an idea by you and see if it flies;
> >
> > About two years ago I installed a gate on my driveway. Its a slider with
a
> > metal track that crosses over the drive and metal wheels on the gate.
It has
> > a 16 foot opening.
> > The electric openers for this type of gate use a chain attached to both
ends
> > of the gate and a drive motor with a sprocket that sits inside the gate.
When
> > the sprocket is turned via the motor. it pulls the chain and opens or
closes
> > the gate depending on which direction the motor is running The problem
is
> > these opener are rather pricey at 800 to 1200 dollars.
> >
> > While at Sam's last week I saw a electric garage door opener (1/2 hp) on
sale
> > for 135.00.
> > The thing that caught my attention was that it was a chain operated
opener.
> > The wheels started turning and what I've come up with is the idea of
buying
> > the opener and building a case which would allow me to convert it to
open the
> > gate. I'd have to mount it vertically and install a couple of idler
> > sprockets.
> > 1. What I'm not sure of is how these chain driven garage door openers
know
> > when to stop or how they reverse ( does the chain simply loop thus the
motor
> > always runs in one direction or does the chain and motor actually
reverse
> > direction?).
> > 2. Are the chains used in this type application standard chains or one
of a
> > kind ?
> > 3. How do chain openers deal with disconnecting the door from the opener
for
> > manual operation?
> > As always thanks for any advise .
> > Bob Nogueira
>
>
> --
> ________________________________________________________________
>
> Mike Sloane
> Allamuchy NJ
> Email:(msloane@att.net)
> Website: <http://www.geocities.com/mikesloane>
> Tractor images: <www.fotki.com/mikesloane>
>
> "If the human race wishes to have a prolonged and indefinite period of
> material prosperity, they have only got to behave in a peaceful and
> helpful way toward one another."
> -- Winston Churchill
/// unsubscribe/change address requests to majordomo@autox.team.net or try
/// http://www.team.net/mailman/listinfo
/// Archives at http://www.team.net/archive/shop-talk
|