Fuel tank height... yeah right...

The U-Can-Do does not mount the tank high enough to cause problems once the engine is running.

However when the engine is sitting on the ground fuel CAN siphon into the cylinder head flooding the glow plug and making the plane hard to start or causing hydro-lock.

You want to do the following

- You can leave the tank as it comes... remember this plane was designed for an inverted setup...

- Keep your tubing as short as possible.

- Start the plane upside down, with a heavier APC prop on it. Lean the idle as much as you can while still maintaining a reliable idle.

- Now when you start the plane normally, DO NOT prime the engine, cut fuel flow to the carb when fueling.

- Use a longer plug if possible to keep the element out of any fuel that will pool.

- Akways keep the throttle at idle cut or block flow, when the plane is sitting on the ground, UNTIL you are going to start the engine.

- Double check the idle setting with the plane upright and engine running, you want only a slight drop in RPM's at idle after a .5 sec pinch.


Do this and you'll get reliable and consistent starts and runs.

Once started the engine doesn't care which way it is oriented... otherwise our engines would shut off every time they go upside down, or nose high which lowers the tank on a U-Can-Do a full 4 inches BELOW the carb...