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eflight-ray
10-28-2005, 08:53 PM
This is rather an old one, it happened at least 10 years ago, so hopefully i've learnt by my mistake.
Well at least I now make different mistakes.

I fancied a really light aerobatic job using one of my stock, (cheap), motors. So I set about designing and building a minimal model. When I say 'design and build', actually I tend to do it the other way round, build, and then design the problems out.

So I ended up with this balsa creation, full of special weight saving holes, (weight adding holes, was another of my earlier mistakes) :rolleyes:

So, here's the picture below.

What about the design flaw, you ask.

Well on lauching 'Twin Boom', it shot skyward like a rocket. Then just like a rocket it exploded in to lots and lots of little pieces.
Over stressed?, under designed?, OK, yes.

MarkFitzgerald
11-14-2005, 06:33 AM
It looked cool, though!

greykat
06-11-2006, 09:24 PM
Nobody told me not to roll up pennies in masking tape to add weight to the nose of my XE2 ( 48" wing ). I just pushed the weight into the very front of the battery compartment to achieve the perfect balance.Here's what happened to the battery the first time I nosed it into a surface harder than grass.

eflight-ray
06-12-2006, 11:47 AM
As they say, we all learn by our mistakes.

What I want to know is when can I stop learning :rolleyes: