A quick question for Tracy, or
? At what rpm does the ECU fire the secondary injectors. Also,
trying to figure out where to place them in terms of the distance from the
ports on the new manifold, any ideas on that?
----- Original Message -----
Sent: Wednesday,
June 04, 2008 8:40 PM
Subject: [FlyRotary]
Re: Initial Timing
Chris,
This is from an msg from Mark Steitle back in 2005.
“ Joe,
There was a posting some
time back explaining how to find TDC, but a search of my archives didn’t
turn it up. I think it was Lynn Hanover who explained how to do this, but
I won’t bet my life on that. This process worked for me on my
20B. So, I’ll try to explain it for you.
Remove spark plugs for
easy engine rotation. On #1 rotor (nearest front cover) rotate the engine
in the normal direction until you can see an apex seal in the exact center of
the trailing spark plug hole. Mark a convenient tooth on the
flywheel. (Helps to make a pointer) Then rotate the engine
backwards until you can see an apex seal in the exact center of the leading
plug hole. Make another mark on the flywheel using the same reference
point as before. Now count the number of teeth between the two marks and
place a mark on this tooth. Rotate the engine back again to align this
tooth with the pointer. This will be TDC. Now you can mark the
crank pulley at the pointer on the front cover, or just use the this new mark
on the flywheel instead.
Mark S.
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Christopher Barber
Sent: Wednesday, June 04, 2008
11:25 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Initial
Timing
As y'all may remember I just built
from mostly new parts a 13b to replace the one that I think I overheated to the
point that coolant was in the rotor chambers.
I have spent the last few weeks
since the build and a repair of the PSRU by Tracy rerunning wires to better
routes, shortening wire runs (since I made most wire way too long.....to be
fair to myself, the Velocity has a 17 foot + run from the IP to the engine/firewall
so a bit of excess was expected). While I was doing all of this I kept
tinkering with the engine to verify installation and clean up and put
things in a more "flight ready' condition since most of the concepts have
now been proven.
ANYWAY, I am now ready to try to
start the engine for the first time. I believe I have all the hoses
connected, the wires secure etc, however, I am not sure as to how to set the
initial timing. I know this has been discussed but I am not sure where. I
have an aftermarket front pulley that was purchased by my building assistant
David Staten but do not have the docs to it. The Haynes manual and
factory book seems very light on the topic and make reference to a yellow lead
mark which my pulley does not have. Dave mentioned a rule of thumb as to
setting the crank angle sensor etc close enough to get the engine started, but
for the life of me I do not recall what it was. Dave is currently a bit out of
the loop (I will try to contact him in the next day or two as well) so y'all's
help would be great.
Thanks to Tracy's test modes I
know I have spark plugs a sparkin' and injectors injecting, if I can just get
them to play nicely with the timing I should once again have a running
engine.....hopefully I will know enough this time not to ruin it.