REFLECTOR: Slow idle speed for short field landings

Tue Mar 20 21:56:56 CDT 2007

Hi Greg...

When I idle at 350 rpm's I can take about 500 feet off the roll-out... It 
makes a big difference at some airports like Fullerton, which is only 2900 
ft. Gives a extra margin of safety that I like...

Best... Steve

----Original Message Follows----
From: "gpoole" <gpoole at zeta.org.au>
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: Slow idle speed for short fiel landings
Date: Wed, 21 Mar 2007 08:37:33 +1100

Yep...talk to us about short field landings Steve?  Just what can you pull
her up in with a 4 cylinder Lycoming @ 350rpm?  (...and with what
brakes/braking effort...and are your main gear legs still the original
shape? ;^))

Greg in Sydney
gregpoole at saaachapter11.com

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of steve korney
Sent: Wednesday, 21 March 2007 4:54 AM
To: reflector at tvbf.org
Subject: REFLECTOR: Slow idle speed for short fiel landings

On my four cylinder Lycoming, I can get it to idle below 350 rpm's....  Talk

about short field landings...

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: Franklin engine noise?
Date: Tue, 20 Mar 2007 04:50:15 -1200

Hiroo,

John is right, 600 RPM is too slow.  The recommended idle is in the range of

750 to 900 RPM.  The Franklin has a large valve overlap which works great at

high RPM but is terrible at idle.  On engine start I have rough idle at 1000

RPM but by leaning immediately, the RPM will rise to as much as 1300 RPM and

things smooth out a whole lot.  If you don't lean for ground operation you
will foul your plugs.  My idle is set for 750 RPM but warm-up is 1100-1200
RPM.  750 RPM idle is still rough but 900 RPM makes things tough for short
field landings.  As far as I'm concerned, landing is the only time you need
to hit the idle stop.

Larry Coen
N136LC
SE/RG Franklin-IVO
    ----- Original Message -----
    From: Hiroo Umeno
    To: Velocity Aircraft Owners and Builders list
    Sent: Monday, March 19, 2007 4:40 AM
    Subject: REFLECTOR: Franklin engine noise?

    I have a favor to ask for those who are flying a Franklin.

    Would someone able to capture the engine startup, runup, and idling 
sound

digitally?  It does not have to be "audio-phile" quality.  Some handheld
device is fine but preferably with gain set low enough that it does not clip

due to high sound pressure.

    What I am looking for is.

    Startup, running at 1000rpm, runup at 1700rpm, mag-check, then idle with
throttle pulled all the way back.

    I am convinced that my Franklin is "missing a beat" but I do not have 
any

reference to compare against.

    I finally got mine running again this weekend (changed the ignition
harness) and it is back to its old trick of growling and shaking. The
shaking is most pronounced when the throttle is pulled back all the way and
the engine is idling at 600rpm or so.  You can see the canard tip bounce
around ½" or so at the tip.  My wife thought that I had some bolts loose.

    Hiroo

----------------------------------------------------------------------------
--

    _______________________________________________
    To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector

    Visit the gallery!  www.tvbf.org/gallery
    user:pw = tvbf:jamaicangoose
    Check new archives: www.tvbf.org/pipermail
    Check old archives: http://www.tvbf.org/archives/velocity/maillist.html

_______________________________________________
To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector

Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html

_________________________________________________________________
Get a FREE Web site, company branded e-mail and more from Microsoft Office
Live! http://clk.atdmt.com/MRT/go/mcrssaub0050001411mrt/direct/01/

--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.14/727 - Release Date: 19/03/2007
11:49 AM

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.14/727 - Release Date: 19/03/2007
11:49 AM

_______________________________________________
To change your email address, visit 
http://www.tvbf.org/mailman/listinfo/reflector

Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html

_________________________________________________________________
Mortgage refinance is hot 1) Rates near 30-yr lows 2) Good credit get 
intro-rate 4.625%* 
https://www2.nextag.com/goto.jsp?product=100000035&url=%2fst.jsp&tm=y&search=mortgage_text_links_88_h2a5f&s=4056&p=5117&disc=y&vers=743