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>:
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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
> _____________________________________
>
>
> 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
> _____________________________________
>
>
> 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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