Today's Message Index:
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1. 12:31 AM - speed kits (Miles McCallum)
2. 06:01 AM - Re: Europa for heavy boys (craig bastin)
3. 06:16 AM - Re: Go fast article for newsletter (TELEDYNMCS@aol.com)
4. 08:00 AM - Monowheel Speed Kit (Justin Kennedy)
5. 09:08 AM - Rotax 912UL Deals - 3 New Ones Up On EBay (danbish)
6. 10:04 AM - Re: Monowheel speed kit (josok)
7. 02:11 PM - Re: Monowheel Speed Kit (Graham Singleton)
8. 02:37 PM - Speed increase with aft CG ()
9. 08:51 PM - Re: Dive to Vne (craig bastin)
Message 1
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You are correct that a major source of drag is the monowheel. When I flew
the prototype in '95 (?), which had separate flap and wheel levers, I set up
a stable trimmed cruise at 100 kt, and popped the mainwheel out. No change.
Part of the reason I'm hoping my taildragger conversion may be a little
quicker. My goal is 200 mph @ 8000 ft. Well, you have to aim high....
The taildragger conversion - at least the attach structure (it uses tri gear
main legs) is almost complete. All the internal bulkheads have been laid up,
all that remains to do is a 10 ply carbon strap laid into the skin
underneath (I'm awaiting for the loan of some vac bagging gear to do that) -
I'll post some pix when it's done.
Miles
Message 2
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Subject: | Europa for heavy boys |
Well I'm 183cm, and had no problems with the height in a friends 90%
complete kit, Mind you I only weigh about 75-80 kg, I am about 100 hours
into my kit, One thing I am considering is narrowing the
tunnel about 2 to 3 inches, mostly for the leg width so you have room to
move about a bit on the
longer flights
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of UVTReith@aol.com
Sent: Thursday, 20 September 2007 2:41 AM
To: europa-list@matronics.com
Subject: Europa-List: Europa for heavy boys
Hi Friends,
There is somebody who would like to buy a Tri-Gear kit but he is a really
imposant boy.
145 kg x 183 cm
I guess, in this case some Mod's are necessary:
Mod 64: High Top - do I need that with 183 cm ?!?
Mod 24: Modification to increase seat width - this is especially good for
more "bum space"
Mod 67: Cockpit width increase (now standard with new kits)
Bubble typ door windows ? They do not like really nice, do they?
I think, that is all we could do or have I missed something.
Maybe some of you have some more ideas?
Best Regards,
Bruno
12:07 PM
Message 3
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Subject: | Re: Go fast article for newsletter |
Message 4
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Subject: | Monowheel Speed Kit |
Hi All
We made our own speed kit consisting only of outrigger fairings and wing
root fairings. While both are unlike the normal ones we felt the wing
fairings made the biggest difference. We have no other speed kit
elements, even the tail wheel is naked.
I designed our wing fairings based on the extensive work done in this
area in WW2. This is why they are not unlike the Spitfire ones. They are
also less than the optimum shape as the fuselage still has to fit in the
trailer.
My monowheel G-ZTED cruises at 130 kts at 1370 pounds at 1000ft on a
standard day. G-ZTED is a Classic with 912S and an Airmaster Prop. &
Warp Drive blades.
William Mills and I had taken flash mouldings of my wing fairings just
before his accident. While William had wanted a set for his aircraft we
had intended to see if there was enough interest and arrange for someone
to make more of them.
The maximum speed is more about drag and while I don't have a 914 it is
perhaps worth a mention that when I set it up for a cruise decent of 250
ft a minute, put the propeller to manual and coursen it up to produce
4800 RPM I get 155 kts which is a whisker off 180mph (test done with two
opposite direction runs on the GPS). This is a reasonable test because
you are beginning to hit a wall of drag. It can go a bit faster in this
mode as there is a little spare boost below 4000ft but I am reluctant to
fly without a margin below Vne.
I also flew with Ivan Shaw in formation. He was on our starboard wing in
another Europa. When we throttled right back for the decent he commented
that he was having to use a significant amount of throttle to keep up.
I know this is all not very scientific but it does appear that, with no
speed kit, our fairings make us slippier than most.
I am happy to do more scientific tests if someone can say what. I am
still trying to get 73 and the first stage of 74 signed off. I have done
the work but the inspector is indisposed.
Safe flying to all.
Justin
Justin Kennedy G-ZTED Classic Monowheel 912S Airmaster with Warp Drive
blades
Flying Story
I am having loads of fun with mine.
The Europa is a great aircraft and it keeps coming up with extra
thrills. I was flying from Scotland to Belfast City in the Spring.
Flying South over the Mull of Kintyre with tail wind of 55kts at 8000ft.
I started out across the Irish Sea with 140 kts indicated, corrected for
height that would be around 150kt plus. The 55kt tail wind made the GPS
ground speed 206 kts. I calculated that I had better start my cruise
decent if I was to enter Belfast Loch at 2000ft. I had to throttle back
a bit but the GPS ground speed gave 215kts for the first part of the
decent which is a whopping 247 mph. Does that count as a dive to Vne?
Not quite. It is alright for those used to it but as a lowly PPL the map
features on the East coast of Ireland did not hang around long enough to
be identified. I nearly missed Belfast City altogether. I had to climb
again to slow up and had to side slip on the approach as I had a lot of
height to lose. All very untidy but within limits. The wind was 25kts
about 10 degrees off the runway which I find the Europa quite likes and
I landed taxied in taildragger style taking care not to get blown over
(propellers costing what they do). I turned into wind rolled to halt and
shut down.
Wow!
The radar controller met me on the stairs up to flight briefing. He said
they had watched me all the way down the coast and were more than
surprised at the tiny little white dot that appeared on the approach.
All on 18 litres an hour I told him.
I can't get enough of this stuff.
JK
==
Message 5
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Subject: | Rotax 912UL Deals - 3 New Ones Up On EBay |
If anyone's interested, I saw 3 Rotax 912's up on EBay this morning. They're in
Boise, Idaho, USA.
Here's the link:
http://cgi.ebay.com/ebaymotors/Rotax-engine-80hp-912-UL-3_W0QQitemZ260162151265QQihZ016QQcategoryZ26437QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
If the link doesn't work for some reason, just go to ebay and do a search for auction
number 260162151265 and look at the link for his other auctions. He's got
them on auction but with a Buy It Now price of $11,800 USD.
Happy bidding,
Dan
Visit - www.EuropaOwners.org
Message 6
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Subject: | Re: Monowheel speed kit |
Hi I've and all,
Love the flying story!
I've had my happy misunderstandings too: Between Kokkola and Ivalo, my home base
was a large area with very low cloud, impossible to fly through. But over the
top looked quit possible, FL110 as max. reported.
So i left Kokkola and kept climbing, a bit longer on the turbo as usual. It brought
me through FL95, the top of the TMA in less then 5 minutes, so i reported
area out to Kokkola tower. He told me wrong, i was only 5 NM from the tower,
and his TMA is 30 NM across. I had to explain that i was out on top :-) There
is probably not much GA traffic that climbs out on top. Asked and got permission
for class Charley up to FL125. Cruise at 65 % power 135 knots indicated, 17
L/h, and 150-155 on the GPS. There was no wind. It got me home all right, would
not have been possible with the C172 :-)
Regards,
Jos Okhuijsen
Visit - www.EuropaOwners.org
Message 7
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Subject: | Re: Monowheel Speed Kit |
Justin
who's your inspector? Have you talked to Bob Gardiner at Cumbernauld
(Bridge of Weir) ? Experienced composite inspector.
01505 613327
Graham
Justin Kennedy wrote:
> Hi All
>
>
>
> We made our own speed kit consisting only of outrigger fairings and wing
> root fairings. While both are unlike the normal ones we felt the wing
> fairings made the biggest difference. We have no other speed kit
> elements, even the tail wheel is naked.
Message 8
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Subject: | Speed increase with aft CG |
Anyone have any numbers for speed increase with aft CG versus frward CG?
How about a guess for speed increase 1370 or 1450 AUW 61" CG versus 59"?
(+50 Knots, +5 Knots, +.5 Knots)??
How about a guess for increase 1370 AUW 62.5" CG versus 59"?
Thx.
Ron Parigoris
Message 9
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Just a thought, but if everyone is so concerned about VNE, Flutter etc
would it not be worth commisioning a computer modeling simulation for a few
thousand dollars, as was done with the lancair, and find all the sortcomings
in one go and be handed the solutions, if memory serves this type of
modeling
on the lancair took the theoretical max speed up to over 500kts, and the
solutions were as simple as a few extra layups of uni in the correct spots.
just a thought
I for one would pay for a share in such a study, if just to have the
knowledge i am safe at 150kts or 180kts or ..... etc
2:02 PM
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