----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Well, just when I though I had it figured out, I
realized I don't have a clue. My Ercoupe is an early serial number
1493. It has a heat diversion box on the lower left firewall. The
heat is properly routed into it and it has a flap that is controlled by the
cabin heat knob/cable. Additionally, the nose cowl has a fresh air intake
hole in it with a mesh screen. However, there is no hose connected to
it. I had assumed that it should have had a hose routed from it to the
diversion box which should have had a collar on it to attach the other end of
the missing hose. I thought the diversion box had a two way function, one
intaking fresh air with the heat pushed off, and second, heat when pulled
on. Wrong. The diversion box flap only closes the front opening of
the box to route heat into the firewall when the knob is out, and closes off the
intake to the cabin when pushed in. Then the heat is diverted out
into the engine compartment like it should. My first question is, why do I
have an air opening in the nose cowling? I cannot find any place to route
a fresh air hose. There are no other openings in the firewall. In
fact, did the early Ercoupe serial numbers even have a fresh air intake?
Could this nose cowling have been off a later model? Second, from the
diversion box how is the heated air routed into the cockpit? It seems to
exit up high off the firewall under the panel. I'm still also
am getting engine compartment smell and a pretty good flow of fresh air
from somewhere. Now that I realize the diversion box isn't providing fresh
air, the only other possibility I can see is the area where the various cables
are routed through the firewall. Realizing this is long and possibility
confusing, I'll still take any thoughs and explanations of the heat and fresh
air system you might wish to offer. And if you are in Shelbyville, Tn. in
the morning, drop by the airport for our monthly EAA breakfast. If you can
figure this out for me, I'll buy. Roger
============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
