No problem JM and I'll bet we may not disagree all that much. Yes there are certain times, certain engines and certain mounting orientations where the added weight (an additional engine battery pack for the glow) and complexity plus the need for additional charging requirements every outing may be worth it.

But my observation is on board glow is is just like flapperons. The fellows can,t wait to get it even when they are still learning on a trainer they just got to have it. That too is a crutch and folks tend to want to use it that way and of course that is a dead end that only leads to crashs early on.

On board glow can and will cause crashs or at least does nothing to prevent flame outs when used carelessly and in lieu of good operating and tuning procedures.

Another parallel thats certain to get me in hot water are flight box power panels for folks operating glow powered aircraft. These are promoted by the press and industry everywhere you look and truth is its just uneccessary fluff that every new flyer just has to have.

So any way I do agree there are realitively rare times a need for on board may arise but I beleve in most cases its counter productive to use them.

John