W-670 Tachometer Leaking Oil

When oil manages to leak out of the tach drive on the accessory case on the W-670, it drains into the tach cable housing. Since it is going down hill, it finally ends up in the tachometer. Oil can leak out of the tach drive through any space between the [...]

By |2016-11-13T09:32:58+00:00July 24th, 2016|Flying-Wire|Comments Off on W-670 Tachometer Leaking Oil

An Alternate Stearman Fuel Valve

There is a military aviation valve that is a match for the Stearman fuel valve in functionality, mounting, and size. It is a bit smaller than the original D-3 valve. Fig.1 - Koehler/Dayton Fuel Valve #07901-3. This is a ball valve with the 1/2 inch flare fitting on [...]

By |2016-11-13T09:32:58+00:00July 24th, 2016|Flying-Wire|Comments Off on An Alternate Stearman Fuel Valve

Master & Starter Solenoids

When it comes time to install or replace one of the electrical system solenoids, it is important to know that there are three configurations of the 12 volt devices and three more for the 24 volt units. Which one will be compatible with your electric system and its master and [...]

By |2016-11-13T09:32:59+00:00July 24th, 2016|Flying-Wire|Comments Off on Master & Starter Solenoids

Air Maze Filter Placard

The metal disc base for the Air Maze logo on the top of the air filter was made out of steel. As a result the nameplates rust and the silk screening disappears. I have struggled with how to make it look halfway original, and have not come up with much. [...]

By |2016-11-13T09:32:59+00:00July 24th, 2016|Flying-Wire|Comments Off on Air Maze Filter Placard

W-670 Generator Step-up Drive

On a Continental 670 engine, you must have a generator step-up drive mounted on the accessory case. This is not an option, even though the name sounds a bit like one. The step-up drive provides a gear ratio that drives the generator at 1.97 times the rpm of the engine. [...]

By |2016-11-13T09:32:59+00:00July 24th, 2016|Flying-Wire|Comments Off on W-670 Generator Step-up Drive

A Magneto Booster Coil for Easier Stearman Starting

varies in its intensity with the speed at which the magneto is turning. When the engine is being started, either by hand or by a starter, the speed of the magneto is necessarily low, and the spark accordingly weak - even weaker if a low charge battery is driving a [...]

By |2016-11-13T09:32:59+00:00July 24th, 2016|Flying-Wire|Comments Off on A Magneto Booster Coil for Easier Stearman Starting