Today's Message Index:
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1. 03:55 AM - Re: Re: PH-DIY first flight! (David Conrad)
2. 04:43 AM - Re: Rotax Radiator Cap (philip george)
3. 01:47 PM - Re: Rotax air consumption (rampil)
4. 01:48 PM - Re: PH-DIY first flight! (zwakie)
5. 02:14 PM - epoxy to firewall bond (William McClellan)
6. 03:42 PM - Re: PH-DIY first flight! (GRAHAM SINGLETON)
7. 03:49 PM - Re: epoxy to firewall bond (rampil)
8. 07:46 PM - Re: epoxy to firewall bond (Fred Klein)
9. 08:35 PM - Re: epoxy to firewall bond (William McClellan)
Message 1
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| Subject: | Re: PH-DIY first flight! |
Whoa!
Be very careful.
Power on stalls can bite!
If the ball is not in the center (right rudder), you can find yourself upsi
de-down on your back very quickly... especially with flaps (and gear down).
- This is a very effective spin entry technique (ball not centered).
I don't know your level of piloting knowledge / skill...
But, before you do any power - on stalls... and you should, just make sure
you know what you are doing.
-
Careful out there.
-
Dave Conrad
A078
CFI - MEI - AI - Glider, ATP
--- On Sat, 4/24/10, rparigoris <rparigor@suffolk.lib.ny.us> wrote:
From: rparigoris <rparigor@suffolk.lib.ny.us>
Subject: Europa-List: Re: PH-DIY first flight!
>
Hi Frans
Sounds like power off stalls are benign. Have you practiced any power on st
alls?
Ron Parigoris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295586#295586
le, List Admin.
=0A=0A=0A
Message 2
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| Subject: | Rotax Radiator Cap |
Try a BMW motor cycle spares dealer as they look the same and Rotax are mor
e likely to use an existing ready made cap than a special.
Phil George G-EORJ Mono
_________________________________________________________________
We want to hear all your funny=2C exciting and crazy Hotmail stories. Tell
us now
Message 3
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| Subject: | Re: Rotax air consumption |
Try it stoichiometrically:
Air flow must be proportional to fuel flow
Use a ratio of 15:1 (just easier that 14.7 reference value)
so 1 gallon per hour (6 lbs) is 15*6 = 90 pounds/air per hour
Dry air at 1 STP = 0.0807 lbs/ft^3
so 90lbs of air = 1115 ft^3 per hour per gph = 18.6 ft^3 per min
Typical Rotax Fuel Flow =5 gph = 93 Ft^3/min Air flow
Air flow into manifold should not depend on turbo settings or anything
else directly except keeping mixture at proper ratio.
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295662#295662
Message 4
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| Subject: | Re: PH-DIY first flight! |
Frans and Illona, once more: congratulations on a job very well done!
It was great to witness the two big Europa grins on both of your faces after having
flown your beautiful bird yesterday!
FYI:
It was good to be able to take PH-MZW up again. After you departed (to Juist, was
it?), I took her up for a second flight of about an hour.
Except for oil temperature everything performed perfectly (oil-temp gets a little
high during climbs - not red-line, but a little too close to my likings).
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295664#295664
Message 5
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| Subject: | epoxy to firewall bond |
I have run into an alarming situation. I find epoxy BID applied to the firewall
material does not have great bonding characteristics. I have not seen this
brought up before. I discovered this, as to attach the instrument panel, I epoxied
a 4 ply BID flange onto the lower firewall inside face. After cure, I was
shaping the flange and found that it peeled away without much difficulty.
This brings into question the bond of all the many places that fiberglass BID
is used to reinforce the reduxed joints on the firewall. I have attached a picture
showing the scuff sanding preparation I did to the firewall surface. Hopefully
the photo remains attached. I am using new epoxy and no unusual temperatures
were prevalent. The epoxy cured as expected so the epoxy mixing proportions
shouldn't be in question. It seems that the phenolic firewall material
just does not allow a good epoxy bond? Is this something that is known and expected
or is this not as it should be?
Thanks,
Bill McClellan
Message 6
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| Subject: | Re: PH-DIY first flight! |
Frans=0Aa Gurney flap is a neater alternative to a trim tab. A short length
of draft excluder stuck on one side of the trailing edge will work just as
well as an ugly tab. Just like the elevator trim tab but one side only. Ad
just the length (150mm or so) to get correct trim.=0AGraham=0A=0A=0A=0A=0A_
_______________________________=0AFrom: Frans Veldman <frans@privatepilots.
nl>=0ATo: europa-list@matronics.com=0ASent: Saturday, 24 April, 2010 22:56:
13=0ASubject: Re: Europa-List: PH-DIY first flight!=0A=0A--> Europa-List me
ssage posted by: Frans Veldman <frans@privatepilots.nl>=0A=0AOn 04/22/2010
02:55 AM, Kevin Klinefelter wrote:=0A> I hope you=0A> both have as much fun
as I am having!=0A=0ASure we have!!!=0AToday we both have been flying, fir
st with our test pilot, and after a=0Afew touch & go's we were released and
could fly ourselves.=0A=0AThe PH-DIY is flying better than we ever hoped f
or! A very light and=0Aresponsive airplane. Easy to fly as well. =0A
Message 7
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| Subject: | Re: epoxy to firewall bond |
Hi Bill,
Can you tell us how you prepped the firewall for bonding?
It needs to be chemically clean and well scuff sanded to provide
a good key.
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=295681#295681
Message 8
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| Subject: | Re: epoxy to firewall bond |
On Apr 25, 2010, at 2:04 PM, William McClellan wrote:
> I have attached a picture showing the scuff sanding preparation I
> did to the firewall surface.
Bill,
Your scuffing looks about like mine...as a rule, in addition to
scuffing, I fire up my compressor to blast away loose particles before
wiping surface down w/ acetone...then brush on a tack coat of
resin...and, only then apply BID. Near as I can tell, my BID tapes on
the firewall are not suspect.
your mileage may vary,
Fred
Message 9
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| Subject: | Re: epoxy to firewall bond |
Thanks for the replys, I am at a bit of a loss as I followed my usual routine,
scuff sanding (80 grit)cleaning with alcohol then allowing to fully evaporate
(clean paper towel), laying up the 4 ply on cellophane to insure proper wetting
of the layers of glass, and I had done the surface prep just prior to layup
so not likely and air borne contaminates got on the surface. In this case I left
the cellophane on top as I used the instrument panel against it to establish
the mating of the flange and the panel. No peel ply used. I would guess that
if any mold release was used in the original creation of the fire wall, it
was on the other side, in any case as usual, I took the surface down to newly
exposed material. I have tried to separate or pry off an epoxy to epoxy surfaces
before and it is undoable, but has to be sanded or ground off. I have also
had to remove a reduxed phenolic pad and it also can only be ground off. Maybe
it only leaves to do another test lay up as again see if I can pry it off.
Thanks,
Bill McClellan
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