REFLECTOR: Primer Works

[Hiroo Umeno]

I love data capture!

More datapoint on my last flight.

At the top of climbout, I was doing 120Kts, DA 5203ft, 2370rpm, 23.5MAP, peak CHT at 390 (peak for the entire flight), burning 12GPH, Oil T was 217.

The DA at the time of the below capture was 5909.

The climb power I used for this flight was 2700rpm, 28.1MAP, burning 12GPH, 117Kts indicated, DA 2174, and VSI indicating 2500fpm climb.

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of steve korney
Sent: Monday, September 25, 2006 9:19 AM
To: reflector at tvbf.org
Subject: Re: REFLECTOR: Primer Works



"Hottest CHT #1 291F, coolest #5 216F.  My climb
power setting is 2600 RPM/25 MAP with a fuel flow around 14 GPH."


Don't you guys think that a CHT of around 350 to 375 f  would be
better.....?

Best... Steve



----Original Message Follows----
From: "Laurence Coen" <lwcoen at hotmail.com>
Reply-To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Subject: Re: REFLECTOR: Primer Works
Date: Mon, 25 Sep 2006 10:41:40 -0500

Hiroo,

Glad to hear that your starting problem is solved.  As to your reported
numbers the IAS isn't very meaningful without the pressure altitude and OAT
to correct to TAS.  Your RPM and MAP numbers would indicate a very high
power setting near 90%.  At that power setting your fuel flow would closer
to 14 GPH than 7 GPH.  Your CHT numbers are consistent with a high power
setting.  My numbers at 8000 feet density altitude, 2600 RPM, 20 inhg, 8.9
GPH, TAS 172 Knts, OAT 12C.  Hottest CHT #1 291F, coolest #5 216F.  My climb
power setting is 2600 RPM/25 MAP with a fuel flow around 14 GPH.

Larry Coen
N136LC SE/RG Franklin/IVO
   ----- Original Message -----
   From: Hiroo Umeno
   To: Velocity Aircraft Owners and Builders list
   Sent: Sunday, September 24, 2006 11:04 PM
   Subject: REFLECTOR: Primer Works


   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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