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Old May 04, 2006, 07:52 PM
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Idea
Building tips and tricks ( please post yours here

I will start the ball rolling here, with one of my own tips.
To make ribs for a balsa wing can be rather frustrating and time consuming.
This method will help speed things up a bit, and will stop the need to sand your leading edge to shape.
Once you have produced your template rib, I made this one in ply for strength, you drill a sheet of balsa with a 3mm drill bit. Then push your template rib into the predrilled hole with the carbon tube at the leading edge of your rib, and cut around the template with a scalpel.
With a little bit of practice you will reproduce a precise replica of the template with no need of sanding.
The advantage with this method is , that your ribs will have perfect alignment with the leading edge.
Good luck with your project.
Knut
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Old May 04, 2006, 07:59 PM
PLD
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If you need to put a curve on balsa so that it'll fit for an application, quite often the curve can be achieved by just wetting one side of the balsa only.
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Old May 04, 2006, 08:00 PM
PLD
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Knut,

Just one question - will you mind if I put these tips/hints into a page on my site too?

Paul.
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Old May 04, 2006, 08:03 PM
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Quote:
Originally Posted by pldaniels
Knut,

Just one question - will you mind if I put these tips/hints into a page on my site too?

Paul.
Thats fine with me, but it would be nice if there would be an aknowlegment who submitted it.
cheers
Knut
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Old May 04, 2006, 08:06 PM
Crikey never leave beer behind
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aileron torque tube connetorsin confined spaces

Whislt construting the the second WW2 for our Profile combat scale day I thought I'd try a aileron connection to the servo that was not only simple but had a secondary effect and that was of a servo saver .
SteveW
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Old May 04, 2006, 08:27 PM
PLD
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Quote:
Originally Posted by AeroNut45
Thats fine with me, but it would be nice if there would be an aknowlegment who submitted it.
cheers
Knut
That's fine - it would have gone without saying (the crediting).

Paul.
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Old May 04, 2006, 08:30 PM
PLD
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SteveW,

Your method works well on side-mounted aileron servos too...
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Old May 04, 2006, 08:40 PM
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More of a money saving tip.

If you use a lot of epoxy, buy it in 1-5 litre quantities from a distributor... much cheaper! Storing it in a fridge will make it last forever if tightly sealed (epoxy is very hygroscopic and the inside of a fridge can be a humid environment)

Go to the $2 shop and grab 2 sauce type squeeze bottles. Fill 'em up and keep them in the cupboard. It's then easy to dispense and measure, and perfect for small to medium size jobs.

If you also use cabosil, which is very light and potentially hazardous if inhaled, fill a jar with with a small quantity of acetone, put on your mask and fill the jar up with cabosil. Keep stirring until it's all dissolved into a thick slurry. You can now add it to epoxy whenever you need it, without the worry of breathing it in.
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Old May 04, 2006, 08:50 PM
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While we at it, here is a refinement. I made the hinge before putting it on the pushrods. If the pushrod is not exactly the right length, this allowes you to adjust it. once you are happy with the setup you run a drop of CA on the edge, where the carbon exits the alu tube.
good luck Knut
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Old May 04, 2006, 08:59 PM
Crikey never leave beer behind
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Do you run the silicon tube right across both connection or just at the end of each rod I found that under combat loads the heat shrink tube is not up to the task by its self as it work hardens and gives up,,, but the full lenght of 1.6 mm dia with the .5 mm bore tube run fully between the 2 rods works extrememly well and its strong as well,, plus the silicon will not work harden.
SteveW
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Old May 04, 2006, 09:02 PM
Next time I'll ARTF...
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How many of us have used plastic teaspoons for making air scoops?
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Old May 04, 2006, 09:10 PM
PLD
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Okay, teaspoon for scoop is a new one for me!
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Old May 04, 2006, 09:29 PM
Next time I'll ARTF...
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Not a building tip strictly speaking...

When I put my receiver into a new plane and want to route the aerial through the fuse from the tail, I:
1. slip low diameter heat shrink tube (a long one) in until it reaches the radio bay,
2. push the aerial along the heat shrink until it won't push any more, and,
3. pull the heat shrink out the tail with the aerial within.

If you run into a former during step 1 you can twist the tube to help get past the obstacle.
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Old May 04, 2006, 09:33 PM
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Brilliant idea!

Another one (not mine) The clear plastic packets commonly used to hold tubes of glue can often be trimmed up and used as wing servo covers.
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Old May 04, 2006, 09:45 PM
Next time I'll ARTF...
glydr's Avatar
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I like to have a packet of Bamboo skewers on hand in the workshop... last night I used lengths PVA'd to tight fit holes in a liteply motor-mount as anchors PVA'd into an EPS fuse.
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