Today's Message Index:
----------------------
1. 12:44 AM - Re: Fitting new tail plane torque tube (alan_hunter1664)
2. 12:52 AM - MOD 77 with NG Rudder (alan_hunter1664)
3. 01:20 AM - Re: retract lever slot (Philipgeorge347)
4. 02:54 AM - Re: retract lever slot (Rowland Carson)
5. 04:22 AM - Re: retract lever slot (Alan Burrill)
6. 04:31 AM - Chrome plated brake disk (Remi Guerner)
7. 07:27 AM - Re: Chrome plated brake disk (Nigel Graham)
8. 07:53 AM - Re: retract lever slot (Rowland Carson)
9. 08:52 AM - Re: retract lever slot (Europaul383)
10. 09:45 AM - Re: Chrome plated brake disk (Remi Guerner)
11. 11:22 AM - Radiator (Alan Twigg)
Message 1
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| Subject: | Re: Fitting new tail plane torque tube |
I received the following response from Europa but i'm still not 100% happy with
just "trim to fit". Anyone else fitted this new standard torque tube that can
offer advice?
Dear Alan,
I have looked into the issue you raised and fully agree that the on-line instructions
do not in their entirety refer to the current tailplane torque tube standard.
The latest standard has pre-drilled shouldered black plastic sleeves fitted,
ref: pt no. TP38 rather than the undrilled plain white sleeves, ref: pt
no. TP10.
As soon as possible we will proceed to update the online assembly instructions
to include the latest design standard whilst retaining the existing instructions
for the previous design standard.
But in the mean time you may proceed with your tailplane assembly as I believe
the only additional instruction you require, ref: Step 6 onwards is to "Trim the
outboard ends of the pre-drilled shouldered TP 38 sleeves in order to achieve
the no end float requirement".
In the previous design you had to determine the hole positions in order to achieve
the no end float requirement, mark the hole centers and drill them.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430805#430805
Message 2
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| Subject: | MOD 77 with NG Rudder |
I intend to incorporate MOD 77 but the MOD leaflet gives no advice on how to incorporate
when the rudder is the hollow NG type. I asked Europa and received the
following response. Has anyone else encountered the same problem that could
also offer advice? many thanks
> Hi Alan,
>
> I remember the shop floor coming to see me on this issue when building the Demo
aircraft last year and although it is not in the Build Manuals yet this is
what we did:
>
> They had to shape a block of blue foam which was bonded into the rudder leading
edge in order to provide a layup surface for the cloth and bracket installation
- easy, well not really - it is a bit awkward to do.
>
> I remember they had to be careful in shaping the block so that it could be slid
into the rudder leading edge and positioned so that it overlapped the cut-out
by 50mm i.e. 25mm at each end. The block can be bonded in position with Redux
420 and cotton flock OR just Flox. As stated above, the foam is not used
in a structural capacity but just as a surface to lay up on.
>
> Also, you will need to keep checking the fit of the bracket as you go along as
I seem to remember the cut-out had to be adjusted slightly in order for it to
fit in its correct position - something about variations in the size of these
welded brackets maybe. Please bear this in mind and I would appreciate you
letting us know how it works out in your case.
Many thanks
Alan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430806#430806
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| Subject: | Re: retract lever slot |
Rowland i recall that the cover plate for the retract lever slot=2C does in
fact hang over the edge on the rear left corner. This will not be seen onc
e the carpet is fitted. Philip George.
Sent from Samsung Mobile
<div>-------- Original message --------</div><div>From: Rowland Carson <row
landcarson@gmail.com> </div><div>Date:19/09/2014 23:25 (GMT+00:00) </div>
<div>To: Europa e-mail list list <europa-list@matronics.com> </div><div>Sub
ject: Europa-List: retract lever slot </div><div>
</div>
I=99ve started marking out the position of the landing gear retract l
ever slot on the top of the tunnel=2C but I=99m worried that it appea
rs rather close to the edge of the top surface at its aft end. If I put the
guide plate on top of where I=99ve marked=2C it protrudes beyond the
edge of the tunnel=2C so it looks as though I=99d need a fillet of f
iller to blend it in after fitting it. I double-checked between the paper &
PDF manuals (I=99ve been caught before with differences between the
two) but both have the same dimensions.
Is this something I should worry about? Should I move the slot slightly mor
e towards the centreline to avoid the possibility of it breaking out of the
side of the tunnel?
All input gratefully received.
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype=2C Twitter: rowland_carson Facebook: Rowland Carson
| pictures: http://picasaweb.google.com/rowlandcarson
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| Subject: | Re: retract lever slot |
On 20 Sep 2014, at 09:19, Philipgeorge347 <Philipgeorge347@hotmail.com> wrote:
> Rowland i recall that the cover plate for the retract lever slot, does in fact
hang over the edge on the rear left corner. This will not be seen once the carpet
is fitted. Philip George.
Philip - carpet? What carpet? Who said I was going to fit carpet?
But seriously, thanks for the reassurance!
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
| pictures: http://picasaweb.google.com/rowlandcarson
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| Subject: | Re: retract lever slot |
Do these help?
Photos from my installation.
Alan
G-OBJT
On 20 Sep 2014, at 10:53, Rowland Carson <rowlandcarson@gmail.com>
wrote:
<rowlandcarson@gmail.com>
>
> On 20 Sep 2014, at 09:19, Philipgeorge347
<Philipgeorge347@hotmail.com> wrote:
>
>> Rowland i recall that the cover plate for the retract lever slot,
does in fact hang over the edge on the rear left corner. This will not
be seen once the carpet is fitted. Philip George.
>
> Philip - carpet? What carpet? Who said I was going to fit carpet?
>
> But seriously, thanks for the reassurance!
>
> in friendship
>
> Rowland
>
>
>
>
>
>
>
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| Subject: | Chrome plated brake disk |
Hi all,
A few years ago, Nigel Graham posted a picture on this forum, which showed a very
nicely lightened and chrome plated disc for the Monowheel. See attached.
Nigel, did you have the opportunity to test this disc in actual operation? What
about friction ? Wear rate of the pads? Does anyone have operational experience
about chrome plated steel discs?
Regards
Remi Guerner
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430811#430811
Attachments:
http://forums.matronics.com//files/chromed_brake_disk_347.jpg
Message 7
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| Subject: | Re: Chrome plated brake disk |
Hi Remi,
The short answer is "no". Having done all that work to lighten the wheel
and disc, I moved on to developing my conventional gear, so this ended
up as an "objet d'art".
My original intent was to make the rough-cast agricultural wheel look
more "aviation quality", remove some weight and try to protect against
the horrendous corrosion that the mono wheel gear components tended to
suffer if left un-treated.
My inspiration came from my miss-spent youth customising motorcycles. I
used to drill and chrome those discs and they performed perfectly well
once bedded in (well, a lot better than the cable operated
single-leading-shoe Triumph brakes they replaced).
Over time the chome plate will wear through, but if the wheel and disc
is regularly cleaned and maintained (as I had intended to do) then this
will not affect braking efficiency. Absolute braking efficiency will be
marginally less that a good cast iron disk (the Europa mono is made of
steel), but this is really academic if braking a single wheel on grass.
Accelerated brake pad wear is (or used to be) an issue with the mono's.
People complained of high pad wear which is unusual for a brake with
such a small duty cycle. In extreme cases, the brake fluid could boil
after a long taxi. In rarer cases, the brakes would lock on until they
had cooled. I have a theory as to why this might happen.
There are two possible causes, both related to the calliper. The Europa
Mono calliper was a direct copy of the Cleveland unit, though not as
well made. Neither the alloy of the body or the piston was anodised, so
the piston could corrode and sieze in the bore. Aircraft that were
stored outside or operated off "regularly fertilised" farm strips were
particularly vulnerable.
The other cause is a design fault relating to the piston "O" ring.
Automotive brake calliper "O" rings are square section and are designed
to grip the piston and deform as the brake is applied and the piston
moves. When brake pedal pressure is released, these rings return to
their original shape, dragging the piston back off the disc by a tiny
amount.
The Europa pattern calliper used a round section "O" ring, which does
not grab the piston but simply allow it to slide past. When brake pedal
pressue is released, the piston remains in contact with the disc.
During long taxis, this creates an immense amount of friction, heat and
pad wear. Because the pad is in contact with the hot disc, this heat
sinks back into the calliper. If there is the smallest amount of air in
the calliper, this will expand and increase the brake pressure, locking
it on.
Your next question will be "Where did you source square section "O"
rings", and this is where I have to admit that by then I had moved on to
designing my Conventional gear - so didn't do the research.
Nigel
On 20/09/2014 12:30, Remi Guerner wrote:
>
> Hi all,
> A few years ago, Nigel Graham posted a picture on this forum, which showed a
very nicely lightened and chrome plated disc for the Monowheel. See attached.
> Nigel, did you have the opportunity to test this disc in actual operation? What
about friction ? Wear rate of the pads? Does anyone have operational experience
about chrome plated steel discs?
> Regards
> Remi Guerner
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430811#430811
>
>
> Attachments:
>
> http://forums.matronics.com//files/chromed_brake_disk_347.jpg
>
>
Message 8
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| Subject: | Re: retract lever slot |
On 20 Sep 2014, at 12:21, Alan Burrill <alanb@dpy01.co.uk> wrote:
> Do these help?
> Photos from my installation.
> <DSCF0663.jpeg>
>
>
>
>
> <DSCF0657.jpeg>
Alan - thanks for your message & pictures. The second one does seem to show a similar
situation to mine. Initially I had difficulty working out the viewpoint
of the first one; the lines in the pre-preg can confuse the perspective and make
it look like an external corner. I see now its taken from the underside looking
forward and into the internal corner, and certainly does show that the slot
comes pretty near the edge of the tunnel.
Thanks for the confirmation that my measurements are OK.
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
| pictures: http://picasaweb.google.com/rowlandcarson
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| Subject: | Re: retract lever slot |
Hi Rowland,
This is how mine looked after fitting and fettling - sorry I haven't got any carpet,
but the general idea is the same...
HTH,
Paul M
383 XS Mono 912S
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430827#430827
Attachments:
http://forums.matronics.com//files/20130415_1346411_151.jpg
Message 10
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| Subject: | Re: Chrome plated brake disk |
Thank you Nigel for your answer. I would love to try your special disc. How much
do you want for it?
Remi
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430830#430830
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I am about ready to fit the radiators to my Motorglider, I have decided
to fit a Laminova for the oil system and the standard Rotax Radiator for
the water system. Before I go out to buy, has anyone in the comunity got
either for sale?
Regards
Alan Twigg
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