Today's Message Index:
----------------------
1. 12:50 AM - Re: (Graeme Smith)
2. 01:26 AM - Re: (Richard Iddon)
3. 05:15 AM - torque tube pins (Graham Singleton)
4. 06:15 AM - Problem with metal Airmaster spinner (Tim Weert)
5. 07:25 AM - Hold downs (BEBERRY@aol.com)
6. 09:39 AM - Re: Problem with metal Airmaster spinner (Ronald J. Parigoris)
7. 11:17 AM - Re: Through the firewall (Paul Stewart)
8. 11:21 AM - Through the Firewall (Erich Trombley)
9. 12:03 PM - Re: Problem with metal Airmaster spinner (BEBERRY@AOL.COM)
10. 04:07 PM - Re: Water Temp Gauge (N55XS)
11. 04:12 PM - Re: Hold downs (N55XS)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Europa-List: |
--> Europa-List message posted by: Graeme Smith <graeme@gcsmith.flyer.co.uk>
Graham,
Taper pins only cause distortion of the tube if they are over-tightened,
Apparently Europa decided that the risk of builders over-tightening
taper pins was greater than the inconvenience of having to replace the
torque tube periodically. Having spent the whole summer trying to do
that (be aware that Europa have changed the diameter of the torque tube
at various stages of the kit development and that they don't carry
spares of the older tubes), I have a different opinion. Let me quote
from my engineering text "/Plain and threaded taper pins (AN385 and
AN386) are used in joints which carry shear loads and where absence of
play is essential".
/ The problem with parallel pins is that, even if they start off "as
tight as a camel's a**e in a sandstorm!" (as mine originally did), it
only takes a knock or a shock (eg letting the counter weight thump down
on the stop when removing the tailplanes, over enthusiastic full and
free movement of controls check or struggling with mod 70) to introduce
some play, and your torque tube is toast! Play begets play!
As Rowland Carson says, a number of builders have already made this
change and I think there should be an approved PFA mod for it , as
judging by the number of replies I have had to my query it's
something that affects a lot of builders
Graeme
Graham Singleton wrote:
>--> Europa-List message posted by: Graham Singleton <graham@gflight.f9.co.uk>
>
>At 23:56 05/09/2005 -0700, you wrote:
>
>
>>Graeme,
>>
>>I am going to have to replace the pins in my torque tube before long.
>>The factory will supply oversize pins and Bob Harrison has an approved
>>mod which clamps the TP12 and TP9 to the tube. I haven't come across
>>any taper pins as an alternative but, if this is an option I would be
>>grateful if you would let me have any info you find out.
>>
>>Richard Iddon G-RIXS
>>
>>
>
>You can't use taper pins, they will distort the tube and that will cause
>friction in the bearings.
>Only alternative I can think of is expandinhg pins. You will have to make
>your own. I made a set from the soft 1/4"stainless the factory use, taper
>hole in the ends and taper bushes to expand the tube by tightening AN3
>bolts.Worked beautifully. Don't think PFA have approved this soloution but
>I did write to Francis years ago.
>Graham
>
>
>
>
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Europa-List message posted by: "Richard Iddon" <riddon@sent.com>
Graham,
Can you expand a bit on 'expanding pins' Not being an engineer I can't
visualise what these are or how they work.
Richard.
You can't use taper pins, they will distort the tube and that will cause
friction in the bearings.
Only alternative I can think of is expandinhg pins. You will have to
make
your own. I made a set from the soft 1/4"stainless the factory use,
taper
hole in the ends and taper bushes to expand the tube by tightening AN3
bolts.Worked beautifully. Don't think PFA have approved this soloution
but
I did write to Francis years ago.
Graham
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | torque tube pins |
--> Europa-List message posted by: Graham Singleton <graham@gflight.f9.co.uk>
At 23:56 07/09/2005 -0700, you wrote:
>Graham - never say never ... John Scott at Cambridge told me he has
agreed, it's a word that will always be untrue
>fitted AN taper pins to at least one Europa in place of the original
>1/4" parallel pins (TP14A & TP14B).
>
>That also seems quite neat; but how do expanding pins avoid the
>distortion problem you fear with taper pins?
>Rowland
Hi Rowland
there isn't any distortion because the pin expands radially, no axial
movement. The problem is the precision engineering to make them.
There is another difficulty, retrofitting with the top on would be tricky
and it would be difficult to be certain that the pin was correctly placed
axially. You could have one end of the expanding section missing on of the
tubes. That's why I didn't pursue it.
Graham
--
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
by courier.fotokone.fi with SMTP; 8 Sep 2005 13:13:25 -0000
| Subject: | Problem with metal Airmaster spinner |
--> Europa-List message posted by: "Tim Weert" <tim.weert@hccnet.nl>
Hi All,
Yesterday I discouvered a small crack in the spinner from my Europa. The crack
starts from one of the "corner" screws to the propeller. It ends at the flat side
cut out for the propeller gap. It is a little but more than 1 cm long.
At 28-8-2003, the former owner (EMIL, it was then flying as demonstrator G-KITZ)
replaced the metal spinner according the techlog due to a crack at 288 flying
hours. Now, 2 years later at 480 flying hours there develloped again a crack
in that "new" spinner.
The propeller and carburators are balanced.
Are there more Europa's with a metal spinner who had this problem?
Is it a design problem or may be an installation problem?
What is the best solution?
According Gehling flugtechnik at Stadtlohn (EDLS in Germany) they can place "triangles"
of metal at all 6 corners (every propeller blade has two corners like
this), all triangle plates fitted with 3 "nieten" (= kind of flat rivets) a piece
to the spinner. But I would like to know if the suggested cure of Gehling
is allowed and will hold.
Regards, Tim.
Heerhugowaard,
#460 PH-JAI XS TG 914 AP332
----------------
Visit EuropaOwnersForum http://www.europaowners.org/
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Europa-List message posted by: BEBERRY@aol.com
I am concerned that my fairly recently acquired Tri Gear 914 has is no
parking brake and no hold down points. This is fine when I am flying from home
and
hangaring every time but when touring I need some security. I am just
fitting a speed kit and wonder if it is permissible to extend a bolt under each
wing where the flap struts are drilled, to make a hold down point on each side.
I do not think that wing hold down points can be retrofitted so any advice
would be appreciated.
Patrick.
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Problem with metal Airmaster spinner |
--> Europa-List message posted by: "Ronald J. Parigoris" <rparigor@suffolk.lib.ny.us>
Hello Tim
I looked at a Trigear with a 912S that has a Airmaster prop, and the spinner was
cracked for a second time in a hundred hours. he had it welded the first time,
and i saw that all the screws was not seated all the way.
I had a Airmaster on order at the time and asked Martin bout cracking??? He said
the newer spinners have a new location of mounting holes that help a lot to
not crack. he probably said they do not crack anymore. i also had concern as the
front mount was not real tight, he said to wrap electrical tape to get a nice
tight fit.
Also it is probably not a good idea to push plane from spinner.
Good Luck.
Sincerely
Ron Parigoris
Tim Weert wrote:
> --> Europa-List message posted by: "Tim Weert" <tim.weert@hccnet.nl>
>
> Hi All,
>
> Yesterday I discouvered a small crack in the spinner from my Europa. The crack
starts from one of the "corner" screws to the propeller. It ends at the flat
side cut out for the propeller gap. It is a little but more than 1 cm long.
>
> At 28-8-2003, the former owner (EMIL, it was then flying as demonstrator G-KITZ)
replaced the metal spinner according the techlog due to a crack at 288 flying
hours. Now, 2 years later at 480 flying hours there develloped again a crack
in that "new" spinner.
> The propeller and carburators are balanced.
>
> Are there more Europa's with a metal spinner who had this problem?
> Is it a design problem or may be an installation problem?
> What is the best solution?
>
> According Gehling flugtechnik at Stadtlohn (EDLS in Germany) they can place "triangles"
of metal at all 6 corners (every propeller blade has two corners like
this), all triangle plates fitted with 3 "nieten" (= kind of flat rivets) a
piece to the spinner. But I would like to know if the suggested cure of Gehling
is allowed and will hold.
>
> Regards, Tim.
> Heerhugowaard,
> #460 PH-JAI XS TG 914 AP332
> ----------------
> Visit EuropaOwnersForum http://www.europaowners.org/
>
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Through the firewall |
--> Europa-List message posted by: Paul Stewart <europa@pstewart.f2s.com>
Must confess to having not been following the thread closely, but if its
of any help there are at least a couple of photos of my fuel return
coming through the firewall via an AN fitting at:
http://www.europaowners.org/modules.php?set_albumName=album58&op=modload&name=gallery&file=index&include=view_album.php
Regards
Paul
G-GIDY
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Through the Firewall |
--> Europa-List message posted by: "Erich Trombley" <erichdtrombley@juno.com>
There is no need to go through the firewall for your fuel lines. I ran my fuel
lines from within the tunnel up through the gap between the engine mount (where
the bungee is attached to) and top of the tunnel. You can go on either side
of the bungee depending on your routing. I used the Port side. The advantage
of this approach is that there is obviously no firewall penetration and the
fuel line can be one continuous piece. When sealing the top of the engine mount
with the standard SS firewall simply cut out a notch to go around the fuel
lines and seal with high temp silicone. Works great and allows for easy removal
of the firewall without disturbing the fuel lines.
Erich Trombley
N28ET Classic Mono 914
There is no need to go through the firewall for your fuel lines. I ran my fuel
lines from within the tunnel up through the gap between the engine mount (where
the bungee is attached to) and top of the tunnel. You can go on either side
of the bungee depending on your routing. I used the Port side. The advantage of
this approach is that there is obviously no firewall penetration and the fuel
line can be one continuous piece. When sealing the top of the engine mount with
the standard SS firewall simply cut out a notch to go around the fuel lines
and seal with high temp silicone. Works great and allows for easy removal of
the firewall without disturbing the fuel lines.
Erich Trombley
N28ET Classic Mono 914
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Problem with metal Airmaster spinner |
--> Europa-List message posted by: BEBERRY@aol.com
It is a golden rule NEVER to push an aeroplane by the spinner. It may crack
and be distorted which has been known to increase imbalance so much in
flight that the propeller etc has parted company with the aircraft!
Patrick
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Water Temp Gauge |
--> Europa-List message posted by: N55XS <topglock@cox.net>
Richard,
If all connections are tight, you might try replacing the sending unit.
If that fails, the gauge is probably toast...
Jeff - N55XS
57 hours and still smilling...
Richard Iddon wrote:
>--> Europa-List message posted by: "Richard Iddon" <riddon@sent.com>
>
>My VDO analogue water temp gauge on my 912S has been acting up on the
>last few flights. Immediately on startup it flickers wildly then as the
>engine warms up it settles down but to a higher temp. than it was
>running previously. I have checked the connections and wiring to the
>sender and all seems OK. I am wondering if :-
>a) anyone experienced anything similar & if so, what was the cause
>/ outcome.
>b) anyone who has fitted a digital system has got a VDO gauge they
>would be prepared to sell.
>
>Richard Iddon G-RIXS
>
>
>
>
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Europa-List message posted by: N55XS <topglock@cox.net>
Patrick,
The tiedowns are really quite simple. Take a look at the September 30,
2004 entry in my build log at http://www.N55XS.com They can also be
modified to extend through the hinge farings on the the speed kits...
Jeff - N55XS
57 hours and still smilling...
BEBERRY@aol.com wrote:
>--> Europa-List message posted by: BEBERRY@aol.com
>
>
>
>I am concerned that my fairly recently acquired Tri Gear 914 has is no
>parking brake and no hold down points. This is fine when I am flying from home
and
>hangaring every time but when touring I need some security. I am just
>fitting a speed kit and wonder if it is permissible to extend a bolt under each
>wing where the flap struts are drilled, to make a hold down point on each side.
>
>I do not think that wing hold down points can be retrofitted so any advice
>would be appreciated.
>
>Patrick.
>
>
>
>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|