Today's Message Index:
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1. 12:53 AM - Re: Europa-List Digest: 2 Msgs - 07/11/20 (Karel Vranken)
2. 02:36 AM - Lord mounts (Mike Wylde)
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| Subject: | Re: Europa-List Digest: 2 Msgs - 07/11/20 |
Erich,
The 8 MT04's that I have are between 24.30 mm and 24.90 mm.
Regards,
Karel Vranken, F-PKRL #447 Mono 1024 h.
Op zo 12 jul. 2020 om 08:40 schreef Europa-List Digest Server <
europa-list@matronics.com>:
> *
>
> =================================================
> Online Versions of Today's List Digest Archive
> =================================================
>
> Today's complete Europa-List Digest can also be found in either of the
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> such as Notepad or with a web browser.
>
> HTML Version:
>
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 20-07-11&Archive=Europa
>
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>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 20-07-11&Archive=Europa
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> ===============================================
> EMail Version of Today's List Digest Archive
> ===============================================
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> ----------------------------------------------------------
> Europa-List Digest Archive
> ---
> Total Messages Posted Sat 07/11/20: 2
> ----------------------------------------------------------
>
>
> Today's Message Index:
> ----------------------
>
> 1. 07:07 AM - Re: LG frame cracks (Pete)
> 2. 10:48 AM - Europa MT04 engine mounts (Erich Trombley)
>
>
> ________________________________ Message 1
> _____________________________________
>
>
> Time: 07:07:33 AM PST US
> Subject: Re: Europa-List: LG frame cracks
> From: Pete <peterz@zutrasoft.com>
>
>
> Hi Jim,
>
> I am in process of removing my gear frame to repair/replace the bent
> bottom gear
> pivot tube (present since my purchase, and likely made worse with my
> side-loading
> since), and short of replacing the frame, would like to strip and inspect
> the entire frame.
>
> How did you get the frame to un-bond from the epoxy tunnel bedding?
>
> What method did you use to strip the paint/powdercoating?
>
> Can you tell me if the Tubes are all 4130?
>
> Thanks for your detailed pdf report of the cracks, added to my
> inspection/reenforcing
> list.
>
> Cheers,
> Pete
>
> > On Nov 12, 2018, at 2:52 PM, h&jeuropa <butcher43@att.net> wrote:
> >
> >
> > We discovered a potential safety issue and wanted to share this so
> others become
> aware of the situation and can inspect their aircraft.
> >
> > We are in the process of our annual condition inspection on our mono
> wheel.
> This year is extensive since motor mounts and bungee cord need replaced.
> After
> being alerted by John Wigney of possible cracks in the lower tubes of the
> LG
> frame, we inspected and discovered our frame is cracked like his. The
> cracks
> are very difficult to find as they are somewhat hidden by the firewall and
> behind
> the vertical tubes of the frame. Using Johns photos, a strong light, and
> magnifying glass, we were able to see a crack in the starboard tube. A
> photo
> with our iPad actually gave the best indication of a crack. A dye
> penetrant
> test confirmed the crack. The crack in the port tube wasnt evident until
> the
> powder coat was removed. The attached document has good photos of Johns
> cracks.
> >
> > We removed the frame and had it repaired by an experienced A&P (FAA
> mechanic)
> using techniques called out in AC 43-13. We reamed out the tubes and
> machined
> a tube to be a tight fit similar to Mod 72 for the upper tubes except the
> insert
> is the full length of the tube. The insert is welded to the original tube
> with rosette welds, and the cracks were stop drilled prior to welding. One
> bolt hole was elongated so we changed it to AN4.
> >
> > A side note, when we started to remove the LG frame, we found that some
> of the
> mounting bolts were no longer tight. When doing your inspection, we
> suggest
> you check these nuts and if any are at all loose, inspect very carefully
> for
> cracks.
> >
> > Our mono wheel kit was purchased April 2000, kit A185 and has 975
> hours.
> >
> > Jim & Heather
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=484894#484894
> >
> >
> >
> >
> > Attachments:
> >
> >
> http://forums.matronics.com//files/181001a_photo_summary_of_landing_gear_frame_cracks_131.pdf
> >
> >
> >
>
>
> ________________________________ Message 2
> _____________________________________
>
>
> Time: 10:48:13 AM PST US
> From: Erich Trombley <erichdtrombley@juno.com>
> Subject: Europa-List: Europa MT04 engine mounts
>
>
> Hello,
>
> Can anyone tell me what the uncompressed length/height of a new
> uninstalled MT04
> is? I measured the ones I recently removed and they vary considerably and
> obviously
> have taken a set. I suspect they are something close to .970 or 24.6mm.
>
>
> As noted in a previous email, I switched to Lord J3608-1 mounts. I
> contacted Lord
> for the recommended preload, however, they indicated there were too many
> variable
> to take into consideration. That said, they provided me with a drawing
> for the 0-200 motor, which isnt very helpful, I am afraid. Interestingly,
> I
> noted two very distinct differences in the Lord mounts as compared to the
> MT04s.
> First is the hardness, the Lord mounts are quite a bit softer. And the
> second,
> which surprised me, is the uncompressed length/height which I had
> incorrectly
> assumed to be the same the MT04. You know what they say when you assume
> something. Anyway the Lord mounts are shorter, by how much I cant say at
> the
> moment as I require the uncompressed dimension of the MT04. Armed with
> this
> information I should be able to trim the space by the delta, which I am
> hoping
> will provide the necessary preload.
>
> Kind regards,
>
> Erich
> N28ET Classic Monowheel 914
> ____________________________________________________________
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Message 2
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The Lord rubber bush as used in the O-200 mount is part no J3608-1, I think
this is the one you mean.
According to Aircraft Spruce the dimensions are
Top dia 1.36", Bottom dia 1.71". Top hole ID .52" bottom hole ID .97".
Height over all .95", and .80 without including flange.
I have got some unused ones in front of me and those measurements seem to
match.
The rubber hose spacer in the middle measures 40mm long x 20mm dia.
That goes over a metal spacer which I don't have to hand, sorry.
Mike
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