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Re: Sun 'N Fun Debrief?

Subject: Re: Sun 'N Fun Debrief?
From: John Wigney <johnwigney@worldnet.att.net>
Date: Thu, 22 Apr 1999 21:13:14
Dave,

No gotchas that I am aware of. However, talked with Graham Singleton on
subject of intermediate rudder bellcrank setup which he aftermarkets
---From the UK for XS kits. Rationale behind this item is the worst case of
two pilots leaning on opposite rudder pedals in an emergency situation.
Direct loads onto rudder horn and rudder hinges for this scenario can be
very high (not sure but I think I remember + 400 lbs). Graham's mod puts
in a bellcrank and mount ahead of the rudder which I understand is
similar to the Classic Europa. This bellcrank takes these potential high
loads off the rudder.

A tip I picked up is not to put the XS fuselage top on until you have
fitted just about everything including the flap linkage, etc.

Shown in the tent were 2 props
#1 was the Whirlwind 2 blade, VP, hydraulic. This prop is very light, ~9
lbs. Catch 22 on this combo for the 912/914/912S engine is that the
mounting pad for a hydraulic governor is the same as the pad for a
vacuum pump. Therefore no vacuum instruments - electric instruments
only. No info on performance of this prop on a Europa. I do not believe
it has been flown yet.

#2 was the electric Airmaster AP308 VP prop by Aero Trading Ltd. from
New Zealand. 
See << http://www.propellor.com/ >>
Offered with 3 blade Warp Drive or their own prop at same price, $3,800,
with manual select of speed range. Additional auto controller is
available at $650.
This prop has been evaluated on the Lakeland demonstrator which
apparently had some turbo problems during the testing work. Anyway,
published results for 5,500 ft show as follows (hope the tabs transmit
OK)

ThrottleRPM        Fixed kts        Variable kts         Increase
100%        5800        122                123                +1
60%        5500        119                124                +5
55%        4800        103                121                +18
40%        4200        94                112                +18
Quote from Airmaster flyer "From the test results, there appears to be
no significant increase in top speed. The greatest gain is at 55%
throttle with the same speed obtained as at full throttle fixed pitch
resulting in a 33% fuel saving."

A lot of focus was given by the Europa staff on the new motor glider
which by all accounts performs very nicely. Hope is to show
plane?/wings? at Oshkosh.

I heard preliminary talk on forming an East Coast builders' group a la
Kim Prout in CA. Nothing definite yet. 

Anybody else ?

Cheers, John, A099
        

aviatordave@fuse.net wrote:
> 
> Dear Europals,
>     Anybody out there is cyberspace willing to share what went on at Sun
> 'N Fun?\
>     Any gotcha's or things that need to be transmitted to the troops?
>     Enquiring minds want to know!
> Thanks,
>     Dave Conrad, A078, Cincinnati
> 


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