Europa-List Digest Archive

Mon 03/11/13


Total Messages Posted: 4



Today's Message Index:
----------------------
 
     1. 01:41 AM - Re: Re: mid-door latch (Max Cointe)
     2. 02:28 AM - Re: Warp Drive Tapered Tips (tennant)
     3. 07:26 AM - mid-door latch - YERLY ()
     4. 01:17 PM - Re: Warp Drive Tapered Tips (tennant)
 
 
 


Message 1


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    Time: 01:41:34 AM PST US
    From: "Max Cointe" <mcointe@free.fr>
    Subject: Re: mid-door latch
    I=92m an experienced man ! not because I will reach 60 next July, not because I logged more than 650 hours for the last 25 years on 11 different GA planes=85 Just because a lot of =93opportunities=94 happened to me during that time. Including two door departures on my Europa. Yes two: first because the rear shoot bolt guide felled at last opening and the rear shoot bold disengaged at first shakes during the following take-off. Second because I didn=92t modify the latch cover which prevents the passenger to touch it with his elbow and it=92s what happened when he tried to take out his pull-over (the mod was done since)=85 None of these two cases whould have been avoided with any additional light on the panel (and you know Murphy=92s low: the led would burn at he time it would be necessary to light). The only way to avoid these stupidities is to follow up good processes (check-list help) and be carrefull and attentioned to what you do! BTW these principles didn=92t prevented us to land with 5 Kt of back wind yesterday because we even hadn=92t a look to the windsock coming back from a local flight engaged on the other orientation of the runway with an absolute no wind J Take care! Max Cointe <mailto:mcointe@free.fr> mcointe@free.fr F-PMLH Europa XS_TriGear Kit #560-2003 912ULS/AirmasterAP332 450 hours F-PLDJ Dyn=92A=E9ro MCR 4S Kit #27-2002 912ULSFR/MTProp MTV7A 1550 heures De : owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] De la part de Bud Yerly Envoy=E9 : dimanche 10 mars 2013 18:36 =C0 : europa-list@matronics.com Objet : Re: Europa-List: Re: mid-door latch Too true John. I have not been privy to the article on door departure. Could someone send me a copy via email to review? I'm afraid that in my career, I have seen many canopy losses and gear up landings. Bitching Betty annunciators, and warning lights doesn=92t prevent loss, a good old look at the latches and in lighter planes pushing on the canopy does. In the F-4, the Back Seater, read the checklist and was listening for "Canopy closed, locked, warning light out, stripes aligned (the mechanical locking indicator because the canopy weighed 275 pounds and you really couldn't move it) then took off with his canopy mechanically unlocked but the warning light out (misadjusted switch). OOPs. Trust me, if you have one latch undone on the Europa (or Cherokee) door, if you push on the door, it will crack open. Make it a habit to push on both clamshell doors in your safety check prior to takeoff, it works well, requires no power, wiring, or crafty workmanship. If you are not flexible enough to move easily to reach to the aft end of the door, lean forward and push on the middle of the door (use caution with ladies to whom you are not intimate with) and it still works. My concern is that it is not hard to add light switches or drill the shoot bolt so the pin can be observed but it gets ignored unless the habits are instilled in one's preflight operation. Upholsterer's and painters can screw up those warning systems unless you supervise them properly. I have seen many stall warning lights on at totally flying speeds and were ignored because the builder just didn't have time to fix it, and I have been on the runway when the canopy light was on because it was hot, the canopy quickly closed and the takeoff roll started and aborted by me, the observer pilot, because the pilot was preoccupied to get off the ground for traffic (he trusted me, and it was my door). Another was lost because the front pin was not engaged and the warning light switch was installed only on the aft pin. Only good habits, visual confirmation and honest checklist compliance work for sure as familiarity breeds contempt. We are creatures of habit... Regards, Bud Yerly ----- Original Message ----- From: John Heykoop <mailto:john.heykoop@gmail.com> Sent: Saturday, March 09, 2013 3:21 PM Subject: Re: Europa-List: Re: mid-door latch Hi Alan I agree that the article in the LAA magazine was very interesting. It would have been even better if it had highlighted the benefits of having a warning light that illuminates if one of the rear shoot bolts hasn't engaged properly. You can go further and have warning lights for all the shoot bolts, but it is really only the rear shoot bolts that are a problem. Having a warning light does not mean that you don't need to physically check that the doors are shut properly, but it does help to guard against the possibility that one day you may become distracted and fail to check properly. Or the hot day when you taxi with the door open and think you have shut it properly before takeoff but haven't. Making absolutely sure that the rear shoot bolts have engaged is well nigh impossible once you are strapped in. So why not have a warning light for the rear shoot bolts? It is cheap, takes up very little space on the instrument panel, weighs next to nothing and is easy to install. I would urge anybody who is still building to make sure they install one. Regards John G-JHKP On 8 Mar 2013, at 23:50, "Alan Carter" <alancarteresq@onetel.net> wrote: <alancarteresq@onetel.net> > > Hi All. > Been reading in the LAA magazin about Europa door departing the aircraft, very interesting contribution. > Way back in 2007 the previous owner of my aircraft, taxing with door unlocked then took off, the pilots door departed the aircraft went over the top and hit the starboard wing and aileron, > Pilots often taxy on a hot summers day with the door open, some have installed warning devices on the Shoe Bolts, but has anyone designed a latch or stay to prevent it opening say less than 2".? > Today i applied grease to the shoe bolts and found the door was very very much better in closing, the only draw back is the grease around the housing if ever a repair was needed, but i did notice a great difference in closing, and much less strain on the actual door handle. > Its probably written down some where in the manual, but the forum jogs ones memory, and this only took a minute. > > Alan > > > > > Read this topic online here: > > <http://forums.matronics.com/viewtopic.php?p=395910#395910> http://forums.matronics.com/viewtopic.php?p=395910#395910 > > > > > > > > > > nbsp; Features Chat, <http://www.matronics.com/Navigator?Europa-List> http://www.matronnbsp; via the Web title=http://forums.matronics.com/ href="http://forums.matronics.com">http://forums.matronics.com _p; generous bsp; title=http://www.matronics.com/contribution href=" <http://www.matronics.com/contribution> http://www.matronics.com/contribution"> <http://www.matronics.com/c> http://www.matronics.com/c================


    Message 2


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    Time: 02:28:02 AM PST US
    Subject: Re: Warp Drive Tapered Tips
    From: "tennant" <barrington.tennant@gmail.com>
    I seem to remember that Thomas Scherer had a considerable performance increase when changing back from the wide blades to the tapered blades on the 80 hp 912. It must be in the archive somewhere. Best regards Barry -------- Barry Tennant D-EHBT At EDLM - Germany Read this topic online here: http://forums.matronics.com/viewtopic.php?p=396012#396012


    Message 3


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    Time: 07:26:17 AM PST US
    From: <f.kyle@sympatico.ca>
    Subject: mid-door latch - YERLY
    May I just second every word Bud Yerly made in his recent email message of the same Subject. It is obvious that here again is another 'old hand' with bags of time and a wise attitude. His advice is typical of people who have (at one time or another) placed their faith in a mechanical device and "been lied to". The loss of a door in the Europa is not worth hanging your hat on a possibly-worn or mis-adjusted or vibration-ravaged tiny piece of tin when your own two eyes and hands are less easily fooled. That's a 'saver', Bud..... Ferg C-FFGG


    Message 4


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    Time: 01:17:03 PM PST US
    Subject: Re: Warp Drive Tapered Tips
    From: "tennant" <barrington.tennant@gmail.com>
    Gentlemen, A relay from Thomas: ------------------------------------------------------------------- Dear Barry, for some unexplainable reason, I cannot post to the forum. Albeit I often would like to share my experience. Anyway, I am not sure whether I would subscribe still that converting from wider blades to the tapered ones does help much in performance. It is a complex co-play between OAT, Altitude, prop-angle and engine performance. I think I did change when I still had a ground-adjustable hub and then it helped as the 912 is a quite weak engine when at high OAT and a heavy plane. I am now flying non-tapered and illegally long (by Europa-standards) blades in the search for hi-altitude performance. Since I added the airbox which is fed by a NACA-Scoop with fresh and slightly pressurized air, my max indicated altitude flown in California was 18.200 feet. The RPM at take-off is however scaringly low even with minimum prop-angle. Only during the second half of the roll will I see more than 4.800 rpm ! ----------------------------------------------------- Barry -------- Barry Tennant D-EHBT At EDLM - Germany Read this topic online here: http://forums.matronics.com/viewtopic.php?p=396037#396037




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