Matronics Email Lists

Check that all other linkages in the elevator system are working at maximum gearage, i.e. the geometry of all other pushrods and horns are at right angles when at the middle of their range. If too obl ...

Previous postings have noted how the Tufnol material of CS04 (the bearing at the bottom of the control stick) expands when oiled. The effect wears off over a couple of years as the oil evaporates. ...

How about looking more closely at the detail surrounding the door closure and frame?
Areas of relatively high and low pressure on the surface of the fuselage around the periphery of the door closure ...

The backup circuit is the fuel sight-gauge vent (if you have one fitted). Which comes with a warning system (i.e. fuel gauge contents will read zero if the tank vent blocks up!).

Duncan McF.

On ...

Yes. Plastic mesh-type inline fuel filter (not paper-type filter). This also helps to break air-locked spurts of fuel rising up the vent line during the later stages of fuelling.

Duncan McF.

On ...

I like the root gusset, although it increases frontal area (but reduces wetted area)!

Duncan McF
do not archive
On 24 May 2023 at 15:11 Rick Moss <Rkwmoss@gmail.com> wrote:

I ...

Getting an oil with enough ZDDP (anti-scuff) is an issue, with this substance being now very diminished in any oil that could be used in an engine with a catalyst (because the Zinc contaminates the ca ...

The downward curvature of the canopy prevents sitting close to the door and forces the occupant towards the centreline of the aircraft.
So, providing hip space in the centre tunnel is more effective ...

There should be a detectable change (small increase) to EGTs if dense air is causing the engine to run lean. Or small decreases if carb ice is the culprit.
I've had a recent engine change and find th ...

G-STES
https://afors.com/aircraftView/56893/Europa-XS

Duncan McF.

On 24 January 2023 at 16:24 Matt Dovey <mattdovey@hotmail.co.uk> wrote:

Is anyone using a Fiti inflight adj ...

The asymmetry of the flap operating (cross) tube means that the flaps will be asymmetrical. Unless they are configured to come up hard against some flap stops (in which case a degree or so of range is ...

Attached is a calculation of the shear pin strength and the basis to LAA agreeing to a stronger (steel) pin. Correspondence justifying the steel is not to hand , although I have the LAA letter referen ...

With a failed pin, there would now be no shear connection between the servo hub and the arm other than friction. So, given enough torque it will slip, and it must have slipped at some point otherwise ...

I'd not seen before the clip on the servo arm; there was an earlier Factory 'fix' of Loctited replacement screws. Later servos have a stud and pinned locknut instead (I guess the stud is held in only ...

It was a nice day with 60 mile vis.
Who's Europa was it to the ESE of Colerne at 12:18 UTC (2 Jan '23)? It was the first time that Skyecho has given me a meaningful traffic alert, although nothing ...

David,
i). The Trutrak will work on a Europa at 0.5Hz update frequency (i.e. every 2 seconds). Sometimes the AP will hunt gently (yesterday was a case in point, but there were sites yesterday that ...

Ditto most water-cooled BMW motorcycles, at a fraction of the Rotax price.

Duncan McF.
On 03 January 2023 at 08:17 Alan Burrill <alanb@dpy01.co.uk> wrote:

Service bulletins sb- ...

Depends on numerous variables including the prevailing friction level in the gearbox.
With the original Warp Drive mine had a zone of "unhappiness" centred around 4400rpm, so that band w ...

Dunno, but my copy looks like this:
https://www.ebay.co.uk/itm/155317810248?chn=ps&norover=1&mkevt=1&mkrid=7101533165274578&mkcid=2&itemid=155317810248&targetid=45848260556374 ...

"Tuning For Speed"
That was my second year (age 12 at high school) book prize (in the days that we had "Speech Days" and prize-givings, when we were allowed to be recognised as no ...