So the glow engines starting themself is "spontaneous ignition"?

If you get woke up in the middle of the night by a loud "WAAAAHHHH" comming from your hobby room...you'll know what it is!

Dang airplane wanted to go fly all by itself

....I wondered what all that noise was out in the plane trailer on a hot day. [sm=stupid.gif]

FBD.

I've always heard grain elevators can self ignite too. I keep a lid on my shop rags....

Dave,

I saw a small enya glow motor start with out an glow igniter being connected and hand proped. The engine was still warm from a flight.

It needs to be airtight and something with a high melting point. Even in an airtight container the rags could smolder enough to melt an airtight plastic lid.