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Wobbly wings - Willow 1

Ribs posted a topic in Builders Workshop

Thought I'd share a build mod, I've just completed on my Willow 1. Perhaps you have similar problems with a model and are wondering if there is much benefit in fixing it... At the English Open, I had no confidence that my wings were even going to stay on. No matter how much tape I put on, the wings would wobble about and never join properly to the fuselage. In the air, the model never quite seemed to grip and respond as I wanted. It's been like it for a long time so I decided to do something about it. Here are some pictures of the method for sorting out crappy incidence pins and wing-fus interface. In addition to fitting a new incidence pin system and filling the gaps between the wings and fus, I thickened the wing joiner with diamond tape, so that it is way more snug in the socket. No more wing wobble. The results are just astounding - I flew the model yesterday in light lift at Whitesheet and despite the gentle air, I was throwing the model around like I never have before. The change was incredible - it's like a completely different aeroplane. I can only surmise that the small movement of the wings during manoeuvres was sapping way more energy than I could ever imagine. Who knew?! If you have wobbly wings or wings that don't join up properly with the fus, it's definitely worth getting it sorted, it seems..
- September 3, 2017
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Willow fuselage (re)assembly

Ribs posted a topic in Builders Workshop

Hello all, I was wondering if someone might give me a little help. I am rebuilding a Willow fuselage nose after noticing the parts were coming loose. The movement was sufficient to have an effect on the v-tail rods, so I thought this must be an issue that should be sorted. After some pulling about, I notice a couple of things 1. The inner nose was 'bonded' to the rear fus molding, with some kind of spongy packing. 2. The cratch did not appear to be epoxied to the fuselage rear of the above packing. I've made a little drawing of how things go together - see attached. Can someone give me some pointers/tips on how to make this a solid fit? As it stands, it looks like there is no way the crutch/servo tray could ever have reached out to the fuselage sides to be bonded to it. To achieve this, I may well have to make another crutch. Perhaps I am misreading the guidelines (linked from the Willow site) and this is 'as designed'. Also does anyone know what this spongy packing is - it looks a little like a weird double sided tape and has a little give - Grommit saw it on Friday and thought it was normal. This seems to generate a nose arrangement with quite a bit of compliance - good for crash survival maybe, but not very stiff/secure. Any help, much appreciated. cheers, Ribs fuselage.pdf
- January 4, 2015
- 22 replies
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