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Loss of trim due to moisture and temperature.

Massive CG changes and snake changes in a vintage model.

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Former Member20/04/2019 14:13:04

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Former Member20/04/2019 14:34:56

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Former Member20/04/2019 14:43:05

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Former Member20/04/2019 14:53:09

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Former Member20/04/2019 15:00:38

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Former Member20/04/2019 15:14:14

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Don Fry20/04/2019 16:18:42
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3388 forum posts
40 photos

Model aircraft are good at finding new ways to die

Former Member20/04/2019 16:38:19

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Former Member20/04/2019 17:33:40

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cymaz20/04/2019 17:51:48
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8390 forum posts
1156 photos

You could rename the Majestic Major.....................Rising Damp sad

did you put any holes in the rudder??

Edited By cymaz on 20/04/2019 17:56:23

Former Member20/04/2019 18:04:25

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Dwain Dibley.20/04/2019 19:26:27
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1145 forum posts
1219 photos

Interesting read David....... You seem to have sealed in the damp when you covered the model. Even so, she is a splendid looking beast If I may say so, I love the see through look.

What are the possibilities for sealing/partitioning and heating your garage.

I did mine...........I took 8 feet at the front and made a partition to create my work shop, luckily I had a 24 foot long garage to start with.

Anyway the point is, all I use to heat it is a 5 Foot tube heater, and they run on pennies.

So...........a possible new project????

D.D.

Former Member20/04/2019 20:09:32

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Allan Bennett20/04/2019 20:30:49
1488 forum posts
38 photos

How's the ventilation in your garage, David? Several of my models live in an unheated shed which, because it has plenty of ventilation (one window slightly open, plus many gaps in the wooden siding) is perfectly dry. Ok, we don't get as much rain down here (Hertfordshire) as you do in the Lake District, but I reckon ventilation is just as important as heating, if not more so. Oh, and the fact that it's got air circulation beneath the floor must help.

Former Member20/04/2019 21:00:31

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Martin Harris21/04/2019 00:06:11
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8403 forum posts
211 photos

Has the C of G shifted forward as the airframe has dried out?

Former Member21/04/2019 11:05:27

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Former Member21/04/2019 11:12:30

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Martin Harris21/04/2019 11:13:03
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8403 forum posts
211 photos

It certainly seems odd - you do have a very short nose so, although rather unlikely, the other thing you can measure is the overall length. Rather than the control rods having changed length significantly causing the obvious control deflections, could the wooden structure have lengthened with temperature and/or humidity changes, increasing the moment of the tailplane?

Or perhaps some of the magnetism has leaked out of the motor and lightened the nose, also reducing the efficiency which is why you needed more input power? 

Well it fits most of the observations....  wink

Edited By Martin Harris on 21/04/2019 11:27:19

Paul Marsh21/04/2019 11:36:11
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3582 forum posts
997 photos

Although not applicable for this model, the reason why I hate snakes, especially on an aerobatic model - you just don't do it!!!

On the Acro Wot, XL, done away with snakes, long push-rods and and fitted the servos direct, in the tail, the post on that by someone else showed how rubbish snakes are.

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