The speed kit used comprises flaphinge fairings (three each side) and
tailwheel cover??
Duncan McFadyean
----- Original Message -----
From: "Alan Stewart" <alan.stewart@blueyonder.co.uk>
Subject: Flying: Performance: Speed kit.
>
> Speed kit: Cruise improvement to standard Europa.
>
> A few months ago, I decided that it would be interesting if I accurately
> assessed the
> performance of my aircraft both before and after fitting of the "speed
kit"
> wheel and
> flap fairings supplied by the company.
>
> Tentative results, based on just one triangular route flown at maximum
> continuous cruise
> RPM of around 5500 (Flydat) has produced a TAS of 154 mph, after fitting
of
> the kit.
>
> My previous figures for 5500 RPM, taken in November gave results of 149
mph
> and 151 mph respectively (prior to fitting the kit).
>
> My initial conclusion is therefore that the speed kit has improved maximum
> cruise by
> around 3-5 mph in my aircraft, a bit of a disappointment if confirmed.
(the
> lower end of
> my expectation).
>
> This figure is obviously provisional. Later this week I'll perform further
> runs, which may
> confirm or contradict the initial figure. With a light aircraft and more
> forward C of G this
> time, I'm keen to make the comparison as fair as possible.
>
> I'm keen to produce a definitive set of figures for my Mark 1, Mono Europa
> with
> 912, standard fixed pitch WD prop and plenum mod.
>
> Alan
>
> NB. For all tests the Flydat measured RPM was actually within the range
> 5510 - 5540.
> Windspeed at 1100ft AGL on the test today was calculated at 70 degrees and
> 16 mph.
> (this concurs with
> http://www.meto.gov.uk/aviation/tafmetar/images/F214_1218.gif
> briefing chart which gives around 80 degrees and 15 knots for the area)
>
> Alan. D. Stewart
--
> --------------------------------------
>
> 14 Goddard Way 'phone : +44 1245 264186
> Chelmer Village mobile : +44 7801 287886
> Chelmsford, Essex CM2 6UR email :
> alan.stewart@blueyonder.co.uk
>
--
> --------------------------------------
>
>
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