REFLECTOR: In pursuit of speed
Scott Baker
scottb33333 at gmail.com
Sat May 11 07:51:46 CDT 2013
Hi Geoff,
Unfortunately your ideas about exchanging wings are not going to work.
While the V173 long wing shares the same dimensions as the XL wing, the
V173 spar is not built as strong as the XL spar. It would not be
advisable for an XL builder to install V173 main wings.
As to installing a set of Velocity standard wings on your aircraft, the
height of the standard spar is shorter than the center section spar on
your aircraft - so the spar heights are not going to match up.
If you have time and are into the idea of heavy "experimenting" to
reduce wing drag, you might look into clipping the V173 wings, making
them several feet shorter. This would involve removing and then
re-attaching the winglets, which is obviously a big job and not very
cost effective.
If you are in the quest for more significantly more speed, my opinion
(for what it is worth) is to abandon the idea of straight exhaust (yes,
it may add some speed gain, but probably not as much as you seek) - and
consider a turbo normalized system for your engine. Turbo charging will
easily give you +20 ktas at higher cruising altitudes (around
12,000'msl). Also plan on purchasing a cs or variable pitch propeller
if you go to turbocharging. Second hand turbo charged systems can be
found off of several Mooney and Commander aircraft.
Good Luck!
Scott B.
On 5/11/2013 8:19 AM, Geoff Gerhardt wrote:
> Guys,
>
> I contacted Clinton at Custom Aircraft Parts. Turns out he was just
> going through his warehouse a week ago and came across a set of tack
> welded pipes for a IO-360 Velocity. He sent me pics, and it looks
> like they will work. So, I may have a set pretty quick.
>
> Does anyone have any experience swapping wings b/w Velocities? If I
> could find a set of normal SE wings and swap out my 173 wings? Does
> anyone have a set of SE wings kicking around? 173 wings are
> essentially XL wings, right? If so, perhaps there's someone out there
> building an XL who would like a set of fully completed wings and I
> could just buy a set of fast build wings from the factory. If I got
> 15kts out of swapping wings, I'd do it.
>
> Geoff
>
>
>
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