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- Path: sparky!uunet!think.com!ames!sun-barr!male.EBay.Sun.COM!volkswagon!frankfx
- From: frankfx@volkswagon.EBay.Sun.COM (Joe Fenech)
- Newsgroups: rec.models.rc
- Subject: Re: Gentle Lady building
- Date: 17 Nov 1992 21:05:38 GMT
- Organization: Sun Microsystems, Inc.
- Lines: 34
- Distribution: world
- Message-ID: <1ebmr2INN71n@male.EBay.Sun.COM>
- References: <1992Nov16.214735.8924@ncar.ucar.edu>
- Reply-To: frankfx@volkswagon.EBay.Sun.COM
- NNTP-Posting-Host: volkswagon.ebay.sun.com
-
-
-
- I have a Gentle Lady that I have flown since July purely on
- the slope. It has about 50 flights on it. I recently peeled the
- Monocote of the wing to replace it with Econocote since landing
- on sand has introduced to many patches on the wing. I found 2
- breaks in the wing that I attribute to heavy diving and high
- wind climbs. I have also done at least a hundred loops with this
- wing, some tighter and faster that others...
-
- The leading edge balsa sheeting was broken between the 2nd and 3rd
- inboard ribs in a symetrical fashion on the right and left. I assume
- this was caused by flexing of the wing in loops and hard dives. I
- doubled all the leading edge sheeting with 1/32 ' sheeting with the
- grain perpendicular to the original sheeting. I applied this sheeting
- between the ribs underneath the wing. I also epoxied the joint of the
- sheeting and the ribs. This should be a good reinforcement.
-
- I also found the first two inboard ribs of the left polyheadral wing
- panel broken at the apex of the rib. They where broken on the grain.
- I probably could have felt this if I inspected carefully after flying.
- This probably broke with wing flexing also. Recently I have been
- attempting to fly inverted and I suspect the abrupt roll outs and
- dives may have created stress and broke as described. To fix/prevent
- this, I doubled the ribs on both sides in the areas mentioned with 1/32,
- again perpendicular to the grain.
-
- I have since covered the wing and flow 5 times. All is back to normal.
- These mods may be worth building into your wings.
-
- I also echo the weakness of the tail expressed by others.
-
-
- Joe
-