REFLECTOR: Flight testing

Douglas Holub douglas.holub at gmail.com
Thu May 10 10:08:54 CDT 2012


On second thought, it's more like 30 or 20 kts with mine.
----- Original Message ----- 
From: "Scott Derrick" <scott at tnstaafl.net>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Thursday, May 10, 2012 10:41 AM
Subject: Re: REFLECTOR: Flight testing


> David a real need for V's is an idle rpm much nearer 600 or even lower. 
> The difference in landing distance between an idle of 800 and 600 is 
> astounding!
>
> I actually set mine for 600-550, which is spec.  I have to be careful 
> after landing when the roll out slows to below 50 knots to give the 
> throttle a quick blip as sometimes the engine may stop, but I put up with 
> that as it really shortens the landing distance.
>
> Scott
>
> -------- Original Message --------
> Subject: Re: REFLECTOR: Flight testing
> From: David Ullman <ullman at robustdecisions.com>
> To: reflector at tvbf.org
> Date: 05/10/2012 08:10 AM
>
>> Just an update.  My woes of last week seem to be past.  I found a major
>> vacuum leak where one of the intake manifold pipes joins the manifold.
>> Fixing that made the engine run much better and I have tracked the 
>> starting
>> issue to the starter solenoid (maybe).  The starting problem has not
>> reoccurred, but I have a new solenoid for when it does.
>>
>> In tinkering with the throttle body (fuel injection) I readjusted the
>> throttle to bring the idle rpm down to about 800rpm.  It was over 1000 
>> which
>> was clearly too high, but with the engine running rough due to the vacuum
>> leak, that was needed to keep it running.  I still don't have all the
>> adjustments quite right, but getting closer.
>>
>> Now with the rpm lower and much practice, my landing distances are 
>> getting
>> good.  Yesterday I repeatedly turned off the 5000ft runway at the 2100ft
>> mark and the then landed on a 3500ft runway and with heavy braking, 
>> turned
>> off at the mid point.  I am now sufficiently confident in the plane and 
>> my
>> ability, to venture to other near-by airports with 3000ft runways and 
>> $100
>> hamburgers.
>>
>> This proficiency is JIT for the good weather in the NW.
>>
>> Let me know if any of you are headed in the Oregon direction this summer. 
>> My
>> EAA section (292) is having a fly-in the week end of Aug 18-19 in
>> conjunction with Vans Homecoming.  I am trying to get other canards to 
>> show
>> up to counteract the spam-can-wrong-way RVs.
>>
>> Please also note that I will be in Great Lakes region in late June 
>> running
>> The Great Race (an antique car road rally).  Sans my Velo.  See
>> www.greatrace.com for cities, dates and other details.
>>
>>
>> David Ullman
>> N-444DX Velocity
>> EAA 292 President
>> david at davidullman.com
>> 541-754-3609
>> 1655 NW Hillcrest Dr
>> Corvallis OR 97330
>>
>>
>>
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>
> -- 
> Outside of a dog, a book is man's best friend. Inside of a dog it's too 
> dark to read.
> Groucho Marx
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