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frankm(at)clara.net
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 Posted: Wed Jan 22, 2014 5:07 am Post subject: Flap cross tube |
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Hi Greg
My flap cross tube, including the inserts is 44 7/8". It is off a classic Mono serial 72. The reason that I know this is because it is sitting on my desk, and having been slightly bent I am just about to order a new one. Now I will check with Europa to ensure that they send me one of the same length. All this started when I left the runway into very soft ground (a turnip patch - what we call swedes, or in Scotland 'neeps') and wrecked the prop. I didn't notice the problem until I found that there was a tendency to fly right wing low and examination showed that the port aileron was not retracting fully and this was traced to the FL15 being bent back by about 1/4"at the end. I straightened it by clamping in V-blocks and pulling (hard) on the other end but found that, though straight, there was still a slight kink in the tube on the inside of the former bend so decided to order a new one. I now wonder if that is really necessary. What does anyone think?
Frank Mycroft G-BWYD
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gregoryf.flyboy(at)comcas
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| Posted: Wed Jan 22, 2014 10:41 am Post subject: Flap cross tube |
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Hi Frank!
It turned out that my cross-tube was certainly in the ball-park, but I guess all the combined dimensions between the tube, the flaps, etc. didn't allow it to quite reach all the way. For certain, that is a good idea to have Europa measure the replacement, to verify it is at least as long as the one you have, and it can be cut down to size.
It's your touché on the line with regards to replacement. Not sure how far back the kink is after the re-bend, but maybe you can clamp the non-kinked side into the v-blocks, and slightly test-bend the tube on the kinked side (in the direction that the kink wants to bend the tube) and compare it to the non-kinked side. Not a permanent bend of course, just within the spring of the tube. If there is any loss of strength, the kinked side would bend easier. If it does, then I'd throw it out and go with new, because a tight-fitting strengthening tube would never fit over the kink..and certainly not on a bend.
Just my .02.
Greg
From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Frank Mycroft
Sent: Wednesday, January 22, 2014 4:48 AM
To: europa-list(at)matronics.com
Subject: Flap cross tube
Hi Greg
My flap cross tube, including the inserts is 44 7/8". It is off a classic Mono serial 72. The reason that I know this is because it is sitting on my desk, and having been slightly bent I am just about to order a new one. Now I will check with Europa to ensure that they send me one of the same length. All this started when I left the runway into very soft ground (a turnip patch - what we call swedes, or in Scotland 'neeps') and wrecked the prop. I didn't notice the problem until I found that there was a tendency to fly right wing low and examination showed that the port aileron was not retracting fully and this was traced to the FL15 being bent back by about 1/4"at the end. I straightened it by clamping in V-blocks and pulling (hard) on the other end but found that, though straight, there was still a slight kink in the tube on the inside of the former bend so decided to order a new one. I now wonder if that is really necessary. What does anyone think?
Frank Mycroft G-BWYD
[quote]
href="http://www.matronics.com/Navigator?Europa-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.com
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