"Morgans" wrote in message
...

"This is a valid point, don't you think? Is there something in the
tanks, or
somewhere in the fuel system causing the injectors to be clogged so
quickly?
Was there some problem previously existing in the engine?

With these plastic airplanes (like I'm building) clogged fuel filters
are common until all the crud is cleaned out of the tanks. After all,
working with fiberglass is mostly sand and fill, sand and fill, fill
and sand, fill and sand and if you get bored you can change that back
to sand and fill... At any rate that creates a *lot* of dust, not all
of which is easily blown out of tanks.

If the injectors are truely clogging it sounds like a fuel system
needs a thorough flush and the addition of a really good fuel filter.
That little jet engine isn't exactly over endowed with thrust so any
loss is substantial.


Fixing a problem is good.

Fixing the cause of a problem is even better. g

It certainly can save a lot of work in the long run and maybe even
hospital bills.

You plainly state what I was hinting around at.

If it were me, I would be wanting to know what the substance plugging the
injector consisted of.

Fiberglass or slosh compound would be high on my list.

Neither. If you had an inkling of knowledge about BD-5's you'd know the
wings are all metal, no fiberglass. Been that way for 30 years, get with the
program and get off the armchair. And if you had followed my notes, you'd
know I used a sealing product that does not dry while in contact with Jet-A.
The wings must be dry, then the compound is introduced, sloshed, and the MEK
is allowed to evaporate from the formula, leaving behind an extremely tough
Buna-N layer. The substance in the injector was extremely small, probably a
grain of sand or something, because fuel flow was not interrupted, but the
pattern was not optimal.



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