Mint,
It'll be less than 6' due to height of weight, + height of attachment pulley at top of gate. I also imagined I'd be rigging to the center point of the gate rail (midway to the top).
Can you confirm I'll need to haul in 3' of rope to lift an object 1' when rigged with a 3:1 mechanical...
berkshire,
Thanks for sharing that. Very understandable, fun, and practical -- excellent resource!
I'm still unclear re: mechanical advantage and travel distance. They say if the mechanical distance is 2, you'll need to haul in twice the amount of rope. So with a gun tackle rig (2:1) lifting...
racookpe1978 ->
There's a safety risk in the gate closing too fast. If someone is in the way or a car driving by at the time it smashes through the end post -- it won't be pretty. Not one for it closing too slowly.
I am having trouble devising a pulley system for the counterweight however. I'd...
Great responses from you all!
The gate is not on a chain drive now -- and the budget won't allow.
It seems that the counterweight system is the way to go, with the addition of a damper for emergencies.
A series of pulleys (compound arrangement) is the way to go -- I'll need to research how to...
Some folks installed a rolling gate on a 7% grade. To open it, it rolls uphill. To close it, it rolls downhill.
The gate rolls along a 20' track between a brick house and the end-post of a fence along an alleyway. It rests against the fence end-post (6x6 pine) when closed, and against the house...
