"Joseph Meehan" wrote in message
m...
Mike Dobony wrote:
..

My father had a full wood double door and had either a 1/4 or 1/3 hp
opener built around the 60's and it never failed other than needing a
new belt-drive (from motor to gear box) and a few new remotes. That
was an EXTREMELY heavy door. When I was 5 I could open it manually.
The spring is supposed to do all the work and negates the weight of
the door. That is what it is designed to do. A 1/4 hp opener SHOULD
be able to open any properly setup door.


Maybe not. Remember inertia from your high-school physics class? The
tendency of a body to resist acceleration; the tendency of a body at rest
to
remain at rest or of a body in motion to stay in motion in a straight line
unless acted on by an outside force.


Yet isn't the spring's function to neutralize this force? The spring
overcomes this to negate the user or mechanical opener from having to deal
with the full weight and inerta of the door.

Overall I still tend to believe that something has been missed. I
have
had 4 consumer garage doors over the last 30 years (two at a time) and I
have yet to have any of them fail. BTW for the last 15 years they have
been
on insulated aluminum doors.

Go ahead and put in a more expensive opener, but I suspect you will
either accidentally correct the problem, or you are going to find the same
thing happening.


But this time if there is still a problem I will not be dealing with the
problem. A call to the installer will have HIM dealing with it. For this
reason I am temtped to go to the Allstar due to the 20 year waranty on the
entire drive train, not just motor and conveyor chain.

Maybe we have forgotten on thing. Cycling! How often are theses
doors
used every day. The real difference with commercial doors is that they
are
designed for many more lifetime cycles and heavier doors.



Used 6-8 times a day. 2 cars each being used twice a day except on very
rare occasions when it might be use an additional time or 2.

--
Joseph Meehan

Dia duit