Ettridge Wind Generator

!: Ettridge Wind Generator

John Patrick Ettridge writes: "The problem with the current Savonius type wind turbines is the fact that the blades are only driven by the wind for approximately 120 degrees of one rotation, that is from the direction of the oncoming wind to about 120 degree from the center, the remaining 240 degrees, the blades are actually using power, and have to be driven into the wind. The solution that I came up with was to allow the normal operation for the 120 degrees of the turn, and for the remaining 240 degrees to place a shield, or skirt to cover the blades in the area that they normally would need to be driven into the oncoming wind, and by using overhead air scoops, directed the air above the rotor down into the tunnel created by the rotor and wind shield. This has the effect that the blades on the rotating turbine are driven for the full 360 degrees, greatly improving low wind speed start up efficiency, and by rotating the skirt and scoops effectively feathering the rotor in high wind speeds. The wind shield also can be moved, to ensure the wind scoops are facing the direction of the oncoming wind, either by a wind tail or mechanical means." See www.ettridgewindturbine.com and our independent coverage at peswiki.com

Ettridge Wind Generator

Discount Van Houtte K Cups Tissot Prs200 Order Now

DIY vawt with car alternator

!: DIY vawt with car alternator

This is an update of my vertical axis wind turbine. Now we have placed a car alternator on it. It turns, but only without field excitation. From the moment we activate the field excitation, it won't turn anymore. We have to find something that turns very light. If possible without excitation (with permanent magnets instead).

DIY vawt with car alternator

Coupon Nutra Sonic Vs Clarisonic Promotion Dog Eared Jewellery

Langbow_Limited,_Soco_Hydrauli.flv

!: Langbow_Limited,_Soco_Hydrauli.flv

Langbow Limited, Soco Hydraulic Vertical Saw 355 Blade HVS355AC Saw02:06 - 4 years ago Langbow supply and support many metal saws in the UK including the HVS series which provide automatic clamping of the piece, variable blade rotation speed and adjustable downstroke for many applications.

Langbow_Limited,_Soco_Hydrauli.flv

Free Office Furniture Fast Saving Jacuzzi Brands

tv lift

!: tv lift

A custom plasma lift I designed and installed to serve 5 rooms in a house. Connected to a Crestron home automation system via rs-232. The servo controlled motor for vertical axis can lift 200 lbs and hold 1800lbs. The rotation can be programmed to various speed and is precise to .5 degree. The brackets to hold the arm in place are 1/2 and 1 inch thick steel plates for extra stiffness. The rotation bearing is twice the strenght of a car wheel bearing. The beam is a 8 by 8 aluminium H-beam. Very low operation noise level.

tv lift

Used Poly Vi Sol Vitamins