>I'd be careful with a garage door that is vertical when open. The springs
>reduce tension as the door opens because it usually will be horizontal and
>at rest on the rails. Therefore it requires little spring tension to hold
>in place in a normal installation. Gravity will be pulling the door straight
>down if the rails go straight up.
>You might be able to rig a counter-weight that will go down as the door goes
>up, and if everything is in balance, it should work well.
I would definitely use a counter-weight on each side if I were to do this.
Sorry I didn't mention that before. This would actually work better than the
springs do on over-the top doors. Since this is supposed to be in an area with
no electricity, one cannot depend on a power operator to help out.
> I would also
>install a latch to hold the door in the open position in case of
Not a bad plan, but with proper cables, total failure would not be likely.
/// unsubscribe/change address requests to email@example.com or try
/// Archives at http://www.team.net/archive/shop-talk