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#1
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Nice presentation. Lots of good advice.
If an incorrectly rigged connection is effectively 'jammed' together by friction, isn't it only going to be detected during a PCC if the load applied to the control surface is greater than the load required to overcome the friction? Without adequate pressure being applied, I'm not sure how a jammed control would be detected through a max deflection PCC except perhaps by someone with very sharp eyes detecting variances/abnormalities in the deflections. Obviously any pressure applied has to be within reason so as not to damage the aircraft. On a seperate note, I have a written checklist for rigging my glider which includes PCC and cross checking. However, I've never met anyone else who does this which seems strange as we all get distracted by people/activities during rigging. After rigging a few hundred times, it's could be all too easy to think that you have just connected/checked something (before being interrupted) when it was actually the day before. Tony "Jim Vincent" wrote in message ... REALLY positive positive checks with a good amount of force applied to the control surface/stick is a must. I differ with you there...more important to fully deflect control surfaces under light load throughout the range of the control movement. Have a look at : http://www.mymedtrans.com/personal.htm Jim Vincent N483SZ illspam --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.766 / Virus Database: 513 - Release Date: 17/09/2004 |
#2
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When the AD came out, my partner and I drilled holes in the latches and =
used what we call "Fender Clips," a pin that looks something like a = Cotter pin except tempered and with a few undulations on one side. = These hold well and are tied to the control rod end with monofilament = fishing line. They have worked well over the years since. I tried once = to convert to Wedekind sleeves but was told by the well-regarded repair = station that did my annual that year that a proper sleeve was not = available for my Grob built Standard Cirrus. On PCCs, I favor an assistant to provide constant pressure against the = control surface being checked, but not to attempt to prevent its = movement. I want to see and hear the mechanism move throughout its full = range in order to detect a hang-up or "funny noise." I do not rely on = persons less familiar with my aircraft than I to know what may be out of = order. It is actually quite easy for a checker to overpower any = movement, especially in the Spoilers. |
#3
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I retrofitted Wedekind sleeves to an Astir CS (or more accurately, got this
done as part of the annual Certificate of Airworthiness. As I recall, the cost was about USD15 per sleeve, with a couple of hours labour (of an expert) for fitting all four. There are about three different types for different kinds of hotelier, so quoting glider type, model, year etc. is essential. Worth every penny, because (a) connecting took seconds per Hotelier, and (b) I knew that the security of the connection couldn't work loose in flight, unlike the R clips we used previously which *might* (though never did) fall out of the hole in the wedge. R clips are OK for (a), once you get used to fitting them by feel, but often your hands are greasy, or you're just clumsy, or life is against you. Plus, what happens if you drop an R clip (even if tied to wires they can slide out) - only 2% of the pilots I know would have a spare! I own an Open Cirrus which, like the Pegase, has Hoteliers behind the spar - this has Wedekinds for those Hoteliers which is essential, as they can only be connected by feel. Our club Pegase has Wedekinds. I think this is a no-brainer. "Mike" wrote in message om... I was watching my friend struggle with (AD required)safty wires for Hotellier connectors on his recently purchased Pegasus. He said the AD notes alternatives to the safty wires like the Wedekind sleeves. Anyone know if these are retrofittable and where they can be obtained. I'm sure this has been hashed out on RAS before but I'm new to the group so apologize for the clutter. TIA: Mike |
#4
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Are there types of L'Hotellier connectors that can't
use the sleeves? A friend has an LS-4 with the sleeves (I guess they are Wedekind) over his L'Hotellier's while my LS-1d relies on safety pins in the 'wedges'. It doesn't APPEAR that the sleeves can be used on the type of L'Hotellier's in my glider, but I could be wrong (a frequent occurance). The safety pins are easy to attach, especially with the adequately sized access hole in the turtle deck. Could the safety pins come out? Possibly, but I don't see how. Could the connections come loose even with the safety pins properly in place? Possibly, but I don't know how. Is there any reason to retrofit the L'Hotellier's with sleeves, if possible, rather than continuing to use the safety pins? Typically, I have the safety pins tied to the control rods with dental floss. Sometimes, when removing a wing, the safety pin snags on the fuselage and breaks the dental floss. The pin drops into the fuselage where I might or might not find it right away. Then, I just go get a spare pin. To date, I have recovered all 'lost' pins in the fuselage. Just a typical landing or two of mine :-) shakes the pins out of their hiding places so I can easily grab it through the turtle deck's access hole. Ray Lovinggood Carrboro, North Carolina, USA DG(LS)-1d 'W8' At 14:12 20 September 2004, Chris Reed wrote: I retrofitted Wedekind sleeves to an Astir CS (or more accurately, got this done as part of the annual Certificate of Airworthiness. As I recall, the cost was about USD15 per sleeve, with a couple of hours labour (of an expert) for fitting all four. There are about three different types for different kinds of hotelier, so quoting glider type, model, year etc. is essential. Worth every penny, because (a) connecting took seconds per Hotelier, and (b) I knew that the security of the connection couldn't work loose in flight, unlike the R clips we used previously which *might* (though never did) fall out of the hole in the wedge. R clips are OK for (a), once you get used to fitting them by feel, but often your hands are greasy, or you're just clumsy, or life is against you. Plus, what happens if you drop an R clip (even if tied to wires they can slide out) - only 2% of the pilots I know would have a spare! I own an Open Cirrus which, like the Pegase, has Hoteliers behind the spar - this has Wedekinds for those Hoteliers which is essential, as they can only be connected by feel. Our club Pegase has Wedekinds. I think this is a no-brainer. 'Mike' wrote in message . com... I was watching my friend struggle with (AD required)safty wires for Hotellier connectors on his recently purchased Pegasus. He said the AD notes alternatives to the safty wires like the Wedekind sleeves. Anyone know if these are retrofittable and where they can be obtained. I'm sure this has been hashed out on RAS before but I'm new to the group so apologize for the clutter. TIA: Mike |
#5
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I can attach and pin the L'Hotellier fittings in my LS-3a in 30
seconds. Easy to check to make sure they are connected properly. Just takes a little practice. Larry Goddard "Zero One" Ray Lovinggood wrote: Are there types of L'Hotellier connectors that can't use the sleeves? A friend has an LS-4 with the sleeves (I guess they are Wedekind) over his L'Hotellier's while my LS-1d relies on safety pins in the 'wedges'. It doesn't APPEAR that the sleeves can be used on the type of L'Hotellier's in my glider, but I could be wrong (a frequent occurance). The safety pins are easy to attach, especially with the adequately sized access hole in the turtle deck. Could the safety pins come out? Possibly, but I don't see how. Could the connections come loose even with the safety pins properly in place? Possibly, but I don't know how. Is there any reason to retrofit the L'Hotellier's with sleeves, if possible, rather than continuing to use the safety pins? Typically, I have the safety pins tied to the control rods with dental floss. Sometimes, when removing a wing, the safety pin snags on the fuselage and breaks the dental floss. The pin drops into the fuselage where I might or might not find it right away. Then, I just go get a spare pin. To date, I have recovered all 'lost' pins in the fuselage. Just a typical landing or two of mine :-) shakes the pins out of their hiding places so I can easily grab it through the turtle deck's access hole. Ray Lovinggood Carrboro, North Carolina, USA DG(LS)-1d 'W8' At 14:12 20 September 2004, Chris Reed wrote: I retrofitted Wedekind sleeves to an Astir CS (or more accurately, got this done as part of the annual Certificate of Airworthiness. As I recall, the cost was about USD15 per sleeve, with a couple of hours labour (of an expert) for fitting all four. There are about three different types for different kinds of hotelier, so quoting glider type, model, year etc. is essential. Worth every penny, because (a) connecting took seconds per Hotelier, and (b) I knew that the security of the connection couldn't work loose in flight, unlike the R clips we used previously which *might* (though never did) fall out of the hole in the wedge. R clips are OK for (a), once you get used to fitting them by feel, but often your hands are greasy, or you're just clumsy, or life is against you. Plus, what happens if you drop an R clip (even if tied to wires they can slide out) - only 2% of the pilots I know would have a spare! I own an Open Cirrus which, like the Pegase, has Hoteliers behind the spar - this has Wedekinds for those Hoteliers which is essential, as they can only be connected by feel. Our club Pegase has Wedekinds. I think this is a no-brainer. 'Mike' wrote in message . com... I was watching my friend struggle with (AD required)safty wires for Hotellier connectors on his recently purchased Pegasus. He said the AD notes alternatives to the safty wires like the Wedekind sleeves. Anyone know if these are retrofittable and where they can be obtained. I'm sure this has been hashed out on RAS before but I'm new to the group so apologize for the clutter. TIA: Mike |
#6
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Larry Goddard wrote in message ...
I can attach and pin the L'Hotellier fittings in my LS-3a in 30 seconds. Easy to check to make sure they are connected properly. Just takes a little practice. Larry Goddard "Zero One" Ray Lovinggood wrote: Are there types of L'Hotellier connectors that can't use the sleeves? A friend has an LS-4 with the sleeves (I guess they are Wedekind) over his L'Hotellier's while my LS-1d relies on safety pins in the 'wedges'. It doesn't APPEAR that the sleeves can be used on the type of L'Hotellier's in my glider, but I could be wrong (a frequent occurance). The safety pins are easy to attach, especially with the adequately sized access hole in the turtle deck. Could the safety pins come out? Possibly, but I don't see how. Could the connections come loose even with the safety pins properly in place? Possibly, but I don't know how. Is there any reason to retrofit the L'Hotellier's with sleeves, if possible, rather than continuing to use the safety pins? Typically, I have the safety pins tied to the control rods with dental floss. Sometimes, when removing a wing, the safety pin snags on the fuselage and breaks the dental floss. The pin drops into the fuselage where I might or might not find it right away. Then, I just go get a spare pin. To date, I have recovered all 'lost' pins in the fuselage. Just a typical landing or two of mine :-) shakes the pins out of their hiding places so I can easily grab it through the turtle deck's access hole. Ray Lovinggood Carrboro, North Carolina, USA DG(LS)-1d 'W8' At 14:12 20 September 2004, Chris Reed wrote: I retrofitted Wedekind sleeves to an Astir CS (or more accurately, got this done as part of the annual Certificate of Airworthiness. As I recall, the cost was about USD15 per sleeve, with a couple of hours labour (of an expert) for fitting all four. There are about three different types for different kinds of hotelier, so quoting glider type, model, year etc. is essential. Worth every penny, because (a) connecting took seconds per Hotelier, and (b) I knew that the security of the connection couldn't work loose in flight, unlike the R clips we used previously which *might* (though never did) fall out of the hole in the wedge. R clips are OK for (a), once you get used to fitting them by feel, but often your hands are greasy, or you're just clumsy, or life is against you. Plus, what happens if you drop an R clip (even if tied to wires they can slide out) - only 2% of the pilots I know would have a spare! I own an Open Cirrus which, like the Pegase, has Hoteliers behind the spar - this has Wedekinds for those Hoteliers which is essential, as they can only be connected by feel. Our club Pegase has Wedekinds. I think this is a no-brainer. 'Mike' wrote in message . com... I was watching my friend struggle with (AD required)safty wires for Hotellier connectors on his recently purchased Pegasus. He said the AD notes alternatives to the safty wires like the Wedekind sleeves. Anyone know if these are retrofittable and where they can be obtained. I'm sure this has been hashed out on RAS before but I'm new to the group so apologize for the clutter. TIA: Mike Hi, In my DG200 I used safety pin type wich were easy to install and lock after 8-10 flight. I tied them with long fishing LEADER to prevent loosing them. S6 |
#7
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![]() I think the best way to do this isn't mirrors or safety pins or PCCs or bits of string or feel or training or flashlights.... I prefer a big ass port (or two) that lets you look directly at the entire connection from all sides. If the designer made an ity-bity port, and you have to rely on a PCC because you can't see the dang connection close up, then that's just a crappy design. If the fuse is really so flimsy the port has to be 5 inches wide instead of 8 or 9 inches, and it can't be right near the connection, then the designer needs to go to the drawing board. The Pegasus elevator connection is out in the breeze, and real easy to visually inspect. If anyone ever failed a PCC of that elevator connection, I'd have to recommend they do the connection inspection next time with eyes open, perhaps with their bifocals on, during daylight hours. I think the (over)emphasis on a PCC is bunk. The connection inspection is the key. If I'm ever in a situation where a PCC discovers something, I'll either not fly that glider again (the design doesn't allow good enough direct connection inspections) or I'll not fly ANY gliders (since I'm too stupid or too hurried to look right at a connection and determine if it's connected). The exception to this is something like the bellcrank failure that happened last year to a dive brake during a PCC. No connection inspection is going to find that. But one wonders if the tens of thousands of PCCs CAUSED the failure itself, by wearing out the bellcrank faster... -- ------------+ Mark J. Boyd |
#8
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Mark James Boyd wrote:
... I think the (over)emphasis on a PCC is bunk. The connection inspection is the key. ... ... I agree. PCC is not a part of the mandatory checks here in France, and as far as I know we don't have more accidents due to disconnected controls than in other parts of the world. Maybe the frequent availability of hangar space making disassembly/reassembly rare is also a factor. |
#9
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I believe Jurgen quit selling them, I have not seen an ad in Soaring as =
he regularly had for some time. I know that Grob in Bluffton OH knows = where to get them. |
#10
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Another good site to check for this mod is Mr. Phoenix's:
http://www.jimphoenix.com/jimphoenix.../Wedekind.html Jim has a unique combination of mechanical and technical skills coupled with a good sense of humor that makes his site one of my all time favorites. -bob |
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