REFLECTOR: Primer Works

[Hiroo Umeno]

Today, I finished the installation of the primer.

Essentially, it is as suggested in this forum.  I used an elbow, tapped with 1/4-20 thread, brass screw with frange trimmed with 1/32" hole drilled throuugh its shank as the nozzle.  Hard line to the front of the induction pipe (beyond the high-temp areas around the exhaust), then flexible hose to the manifold on the firewall, which T's the feeder from the solenoid.  My current start procedure goes like this.

Master - ON
Mags - Both
Mixture - Full Rich
Boost - ON (Shows fuel flow.  Wait until flow settles down to 0)
Throttol - Open 1/4"
Primer - ON (2 - 4 sec as needed.  Flow will show 1.2GPH or so)
Clear Prop!
Crank.

Using this procedure, the engine started within 5 seconds or so of cranking.  It at first started firing intermittent before settling into a nice regular run.

Thanks, all for the suggestions on the primer.

On yesterday's flight, I took the plane up to 147Kts indicated straight and level, 4500ft, 2710rpm, 24.3MAP, fuel flow showing 7.0GPH.  Oil at 197degF, Hottest cylinder #6 running 344, coolest #2 running 308.

Do these seem reasonable?  The plane does not have wheel pants, surfaces are rough, wing-bolt holes uncoversd, cowl gaps not sealed, etc.  It is in a pretty dirty configuration right now.

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