Unusual Wind Power Feature
Posted: Sun Jul 24, 2022 12:39 pm
I thought I’d share an unusual “turn-out-of-the-wind” feature on a 2500W Wind Power Electric Co machine. Maybe someone that sees this post has seen one and knows more about it. This is a 1935 model Wind Power. It’s a 32V, 3 blade 14’ dia, direct-drive, downwind wind charger….not a very common machine. I think I’ve seen maybe 5 or 6 in the last 10 years. Wind Power is the predecessor to what became WinPower in the late 1930’s.
The blade actuated governor feathers the props to limit speed but it becomes ineffective in very high winds. Not having a tail vane to turn it out of the wind puts the burden of shutting it down solely on parking brake. A cable activated drum brake is located inside the generator case behind the armature. The confined space and small diameter drum make it difficult for it to shut it down in high winds…. the 14’ prop can generate a lot of torque at high speed.
This machine was purchased by a friend in Minnesota in the 1970’s. It and its 50’ tower were lovingly stored out of the elements until I purchased it a few months ago and drug it back with me to Texas. I’ve restored the machine and currently have it and the out of the wind feature mounted on a 7’ stub tower.
The mechanism consists of a ½” pipe that connects the yaw post shaft to a 12” diameter gear located under a storm stay casting a few feet below. A spring mounted pinion gear and a hand crank connected to the pinion gear 40’ below allows you to manually turn the generator out of the wind. The spring counters the weight of the ½” dia steel X 40’ of steel rods that go to the ground so only a small amount of force is needed to engage or disengage the pinion. The thing is very well constructed so I’m thinking it may have been factory produced or possibly an accessory offered by a dealer or windmill tower mfg for high wind areas. Can’t rule out homemade as I’ve never seen any literature on it. The pipe connection to the large gear allows the brake cable to be used once you’ve taken the machine out of the wind. I believe the intent was just to help shut it down, not to leave it out of the wind. I don’t see how it could survive high winds for very long. The turn-out of the wind feature was 90% complete. It was missing the ½” pipe shaft (possibly because it twisted off) and I added the oil filter wrench for the pinion spring cover.
The blade actuated governor feathers the props to limit speed but it becomes ineffective in very high winds. Not having a tail vane to turn it out of the wind puts the burden of shutting it down solely on parking brake. A cable activated drum brake is located inside the generator case behind the armature. The confined space and small diameter drum make it difficult for it to shut it down in high winds…. the 14’ prop can generate a lot of torque at high speed.
This machine was purchased by a friend in Minnesota in the 1970’s. It and its 50’ tower were lovingly stored out of the elements until I purchased it a few months ago and drug it back with me to Texas. I’ve restored the machine and currently have it and the out of the wind feature mounted on a 7’ stub tower.
The mechanism consists of a ½” pipe that connects the yaw post shaft to a 12” diameter gear located under a storm stay casting a few feet below. A spring mounted pinion gear and a hand crank connected to the pinion gear 40’ below allows you to manually turn the generator out of the wind. The spring counters the weight of the ½” dia steel X 40’ of steel rods that go to the ground so only a small amount of force is needed to engage or disengage the pinion. The thing is very well constructed so I’m thinking it may have been factory produced or possibly an accessory offered by a dealer or windmill tower mfg for high wind areas. Can’t rule out homemade as I’ve never seen any literature on it. The pipe connection to the large gear allows the brake cable to be used once you’ve taken the machine out of the wind. I believe the intent was just to help shut it down, not to leave it out of the wind. I don’t see how it could survive high winds for very long. The turn-out of the wind feature was 90% complete. It was missing the ½” pipe shaft (possibly because it twisted off) and I added the oil filter wrench for the pinion spring cover.