Today's Message Index:
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1. 08:35 AM - =?iso-8859-1?Q?int=E9rior_kit_from_europa? (yannick LAURENS)
2. 10:50 AM - Prop advice fixed pitch - Warpdrive or Arplast ? (jpg12305)
3. 11:55 AM - Re: G-RPAF 1st Flight (danbish)
4. 02:05 PM - Re: Prop advice fixed pitch - Warpdrive or Arplast ? (Duncan & Ami McFadyean)
5. 02:26 PM - Re: Prop advice fixed pitch - Warpdrive or Arplast ? (nigel charles)
6. 05:08 PM - Re: Prop advice fixed pitch - Warpdrive or Arplast ? (Graham Singleton)
7. 05:18 PM - Re: Prop advice fixed pitch - Warpdrive or Arplast ? (Graham Singleton)
Message 1
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| Subject: | =?iso-8859-1?Q?int=E9rior_kit_from_europa? |
I am looking informations, about int=E9rior kits from europa, what about
the quality and comfort for the seats, has anyone some photos for this,
or do you know a better adress in UK or USA
thank's for help
FPSCZ,
europa classic, kit 192
Message 2
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| Subject: | Prop advice fixed pitch - Warpdrive or Arplast ? |
My current prop is the standard 3 blade Warpdrive, but unfortunately shortened
in its early life due to a ground encounter.
Diameter is reduced to about 58", which (I assume) reduces significantly as well
its efficiency.
In order to revert to proper performance I am considering the current alternative
(VP not being an option due to cost and weight) :
- purchase new blades from Warpdrive (cheap and straightforward)
- replace with an Arplast Ecoprop. From misc readings it looks better designed
than the Warpdrive, question being if the extra performance worths the extra cost.
Engine is a 912ULS.
Has anyone gone through such change ?
Jean-Paul
Europa monowheel 332 - France
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=193137#193137
Message 3
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| Subject: | Re: G-RPAF 1st Flight |
Wow, beautiful bird! Congratulations!
Visit - www.EuropaOwners.org
Message 4
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| Subject: | Re: Prop advice fixed pitch - Warpdrive or Arplast ? |
Jean-Paul,
Here are some figures that I measured earlier this year for a 912S Europa
using a 1600mm (63") diameter 130mm chord Arplast Ecoprop in place of the
64" wide chord Warp Drive (which had been set to 20.5 degrees at the tip).
The Ecoprop propeller came off a BanBi Club (which is the version with
longer wings than the normal (UK) BanBi) and for which direct performance
figures were available. So, to compare with the Club, the propeller was set
up at the same pitch as used on the Club
The BanBi performance figure is shown first, with the Europa figure
following in brackets (...).
Blade set at 20 degrees at the tip (no spinner on the Europa):
Max static was 4400rpm for both aircraft.
128 knts tas at 75% (130knts tas)
149 knts tas flat out (154knts tas 5500rpm)
1250 FPM (1200)
17 lph at 75% (16)
The results are the same within measurable error, except that the Europa was
faster!
The 20 degree pitch setting is OK for a 500m strip but for my short (<400m!)
strip and
fully loaded I needed to fine the prop to 18.25 degrees. Which then provided
almost identical take-off performance to the Warp Drive that I had on
previously, except that
fuel burn was 5 to 7% less with the Eco and vibration was reduced.
The Ecoprop does not "constant-speed" as well as the Warp Drive, so has a
narrower operational speed range, meaning more compromise for climb against
cruise performance.
The Ecoprop 130mm chord possibly has a little too much blade area for the
912S and could be better suited to the 914. I have not tried the 110mm chord
Ecoprop.
If I had the choice of the Warp or the Eco I would probably go for the
Eco. If I had a longer airfield I would definitely have the Eco.
Hope this is of use to you.
Duncan McF.
----- Original Message -----
From: "jpg12305" <jpg.comm@laposte.net>
Sent: Wednesday, July 16, 2008 6:47 PM
Subject: Europa-List: Prop advice fixed pitch - Warpdrive or Arplast ?
>
> My current prop is the standard 3 blade Warpdrive, but unfortunately
> shortened in its early life due to a ground encounter.
> Diameter is reduced to about 58", which (I assume) reduces significantly
> as well its efficiency.
> In order to revert to proper performance I am considering the current
> alternative (VP not being an option due to cost and weight) :
> - purchase new blades from Warpdrive (cheap and straightforward)
> - replace with an Arplast Ecoprop. From misc readings it looks better
> designed than the Warpdrive, question being if the extra performance
> worths the extra cost.
>
> Engine is a 912ULS.
> Has anyone gone through such change ?
>
> Jean-Paul
> Europa monowheel 332 - France
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=193137#193137
>
>
>
Message 5
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| Subject: | Prop advice fixed pitch - Warpdrive or Arplast ? |
Hi Duncan
Did you mean 4400rpm static or did you mean 5400rpm?
Regards
Nigel Charles
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Duncan &
Ami McFadyean
Sent: 16 July 2008 22:02
Subject: Re: Europa-List: Prop advice fixed pitch - Warpdrive or Arplast
?
<ami@mcfadyean.freeserve.co.uk>
Jean-Paul,
Here are some figures that I measured earlier this year for a 912S
Europa
using a 1600mm (63") diameter 130mm chord Arplast Ecoprop in place of
the
64" wide chord Warp Drive (which had been set to 20.5 degrees at the
tip).
The Ecoprop propeller came off a BanBi Club (which is the version with
longer wings than the normal (UK) BanBi) and for which direct
performance
figures were available. So, to compare with the Club, the propeller was
set
up at the same pitch as used on the Club
The BanBi performance figure is shown first, with the Europa figure
following in brackets (...).
Blade set at 20 degrees at the tip (no spinner on the Europa):
Max static was 4400rpm for both aircraft.
128 knts tas at 75% (130knts tas)
149 knts tas flat out (154knts tas 5500rpm)
1250 FPM (1200)
17 lph at 75% (16)
The results are the same within measurable error, except that the Europa
was
faster!
The 20 degree pitch setting is OK for a 500m strip but for my short
(<400m!)
strip and
fully loaded I needed to fine the prop to 18.25 degrees. Which then
provided
almost identical take-off performance to the Warp Drive that I had on
previously, except that
fuel burn was 5 to 7% less with the Eco and vibration was reduced.
The Ecoprop does not "constant-speed" as well as the Warp Drive, so has
a
narrower operational speed range, meaning more compromise for climb
against
cruise performance.
The Ecoprop 130mm chord possibly has a little too much blade area for
the
912S and could be better suited to the 914. I have not tried the 110mm
chord
Ecoprop.
If I had the choice of the Warp or the Eco I would probably go for the
Eco. If I had a longer airfield I would definitely have the Eco.
Hope this is of use to you.
Duncan McF.
----- Original Message -----
From: "jpg12305" <jpg.comm@laposte.net>
Sent: Wednesday, July 16, 2008 6:47 PM
Subject: Europa-List: Prop advice fixed pitch - Warpdrive or Arplast ?
>
> My current prop is the standard 3 blade Warpdrive, but unfortunately
> shortened in its early life due to a ground encounter.
> Diameter is reduced to about 58", which (I assume) reduces
significantly
> as well its efficiency.
> In order to revert to proper performance I am considering the current
> alternative (VP not being an option due to cost and weight) :
> - purchase new blades from Warpdrive (cheap and straightforward)
> - replace with an Arplast Ecoprop. From misc readings it looks better
> designed than the Warpdrive, question being if the extra performance
> worths the extra cost.
>
> Engine is a 912ULS.
> Has anyone gone through such change ?
>
> Jean-Paul
> Europa monowheel 332 - France
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=193137#193137
>
>
>
Message 6
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| Subject: | Re: Prop advice fixed pitch - Warpdrive or Arplast ? |
All
in my experience, (not as extensive as some on this list) the Eco prop
is an excellent compromise. (whatever you do, is compromise in aerodynamics)
Warp drive has good performance when stalled, ie at start of take off.
Thereafter it's efficiency starts to decline. In general I think it is
too stiff, (too much carbon, expensive and V Hi modulus) and designed
for slow airplanes with rag wings, the ECO uses carbon to resist
torsion, (best) and S glass to resist centrifugal loads, also best imho,
it's more flexible but hi modulus) .(forgive me if that may confuse
you,, (I've had a g&t) almost as strong as carbon but more extension
for the same load)
Ecoprop will give you a much smoother ride because it helps to damp out
the vibrations which the Warp Drive does not, it rings like a carbon
bell! and gives everything attached to it a harsh ride. (IMHO! get a
second opinion), I don't know as much as some of you guys do.
Jimmy Keppert in Austria has a lovely monwheel built by Trevor Jackson,
(kit no 3 I think) he has an Ecoprop and goes almost as well as Klaus
with a VP NSI, (Warp blades) Klaus' airplane is lovely too I must say. I
wish those guys would talk to us occasionally, they have valuable
experience to share, (which they do when asked)
Alain Petit who runs Arplast, I have known for many years and I respect
him.
Graham
nigel charles wrote:
> Hi Duncan
>
> Did you mean 4400rpm static or did you mean 5400rpm?
>
>
>
>> In order to revert to proper performance I am considering the current
>> alternative (VP not being an option due to cost and weight) :
>> - purchase new blades from Warpdrive (cheap and straightforward)
>> - replace with an Arplast Ecoprop. From misc readings it looks better
>> designed than the Warpdrive, question being if the extra performance
>> worths the extra cost.
>>
>> Engine is a 912ULS.
>> Has anyone gone through such change ?
>>
>> Jean-Paul
>> Europa monowheel 332 - France
>>
>>
>>
>>
>>
>
>
>
Message 7
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| Subject: | Re: Prop advice fixed pitch - Warpdrive or Arplast ? |
Jen-Paul
try an Ecoprop, Alain Petit knows what he is doing
graham
jpg12305 wrote:
>
> My current prop is the standard 3 blade Warpdrive, but unfortunately shortened
in its early life due to a ground encounter.
> Diameter is reduced to about 58", which (I assume) reduces significantly as well
its efficiency.
> In order to revert to proper performance I am considering the current alternative
(VP not being an option due to cost and weight) :
> - purchase new blades from Warpdrive (cheap and straightforward)
> - replace with an Arplast Ecoprop. From misc readings it looks better designed
than the Warpdrive, question being if the extra performance worths the extra
cost.
>
> Engine is a 912ULS.
> Has anyone gone through such change ?
>
> Jean-Paul
> Europa monowheel 332 - France
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=193137#193137
>
>
>
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