Re: Garage Door Opener keypad recommendations

[JoeRaisin <joeraisin2001@xxxxxxxxx>]

On 11/17/2010 5:47 PM, Jim wrote:
> On Nov 17, 8:06 am, tourman<robercampb...@xxxxxxxxx>  wrote:
>> On Nov 17, 6:21 am, JoeRaisin<joeraisin2...@xxxxxxxxx>  wrote:
>>
>>
>>
>>
>>
>>> On 11/16/2010 7:57 PM, Christopher Glaeser wrote:
>>
>>>>> One of my trades is (was) overhead door installation.
>>
>>>> Fair enough. I called the company that installed the garage doors in our
>>>> neighborhood. They are among the major garage door compainies in
>>>> northern california. I told him about my experience with a broken
>>>> spring, and asked him if the motor should be able to open the door with
>>>> a broken spring. He said no way. He went on to explain that some
>>>> contractors use 1/3 HP for the heavy doublewides because the spring does
>>>> all the heavy lifting, but they don't recommend the smaller motors for
>>>> the heavy doors. However, he said that even the 3/4 HP motors can't open
>>>> a heavy doublewide with a broken spring.
>>
>>>>> Now in addition to a power failure, a battery failure, and a stormy
>>>>> night when
>>>>> you come home.... You're going to throw in a broken spring at that exact
>>>>> moment.? Talk about entropy. Hell, if all that goes wrong then that's
>>>>> some
>>>>> kind of mojo warning you not to go in.
>>
>>>> I'm not sure you understand the scenario I'm describing. I'm talking
>>>> about a single point of failure. I know many people (myself included)
>>>> who do not carry any house keys. The only way for them to gain entry to
>>>> their house (without a break in), is through the garage door. If the
>>>> garage spring breaks while they are outside the house, and they have a
>>>> heavy garage door, then gaining entry to the house may present a challenge.
>>
>>>> Best,
>>>> Christopher
>>
>>> Are you saying that you leave the door from the garage to the house
>>> unlocked?
>>
>> RHC: Good question ! This is a very poor idea and an ongoing source of
>> false alarms. If the door doesn't close properly and isn't locked,
>> high winds outside can cause enough of a vacuum inside the garage to
>> pull or push the door open just enough to trigger the zone (especially
>> with magnetic contacts versus roller balls behind the door) . This is
>> a common cause of false alarms that I routinely warn my clients about.-
>
> Ummmm what kind of "roller ball" would you use on an overhead door?
>
> I can see a 2" gap magnetic switch but a roller ball?  Well, maybe if
> it was about  6 inches in diameter to give you the two inches of play.
> I think the door would have a hard time trying to push in a ball that
> size and the kids would constanly be leaning their bicycles against
> it. :-)

We were talking about the garage to house door.

Though a six inch roller ball would be a sight to behold...