gm3
so i have a plane that is already cut out and ready to be built. the problem is that in real life (i designed it in sketchup) some of the principals dont work out, for example i built one of the wings and how i designed it it is getting no lift. another problem is connecting the wings to the fuselage and the motors to the wings. these problems could cripple the entire build and end up with a fully built plane that cant fly and i will have wasted a lot of glue and time. my question is do you guys have a cutoff, i mean do you have a time when you should just cut your losses.
aaaaaannnnnd there's the tree
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fishwhisperer83
Go for it, the glue cost is small compared to the knowledge you'll learn from trying it. People have done things that they " knew" wouldn't work and then it turns out to work really well.
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gm3
well as it turnes out the bare weight of all the parts( the bare minimum) weighs to much to fly in my school field(50 oz ) so it canot legally fly unless i went to a flying field so thenks for the advice.
aaaaaannnnnd there's the tree
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squishy
Learning when to quit is very hard for some people. It was an important skill I had to learn for mountaineering and was emphasized by many of my elders. Turning around and swallowing some pride means you get to live and try another day and try again. In this hobby it just means you get to add to your pile of extra parts, I love extra parts, they inspire the best ideas..
"Education is not about filling buckets; it is lighting fires." W.B. Yeats

http://www.youtube.com/user/squishy654
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Kiko12
Never give up
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rodrigo
a classic phrase in nautical language: the best time to reefing (reduce the main sail) is the first time you think about it ....
it's never pleasant to withdraw from a project, but the first time you think about it is the sign of a dificult or boring proyect.... from there all the time you spend on this is a waste of time and money...

how avoid this risk: (my personal point of view of course)
-plan ahead... all the process is a chain...objetive of the project, whish is the motor-prop , then maximum thrust-speed, maximum weight, wing area and so on... check parameters in the process...
-start simple to prove the basic concept and check all the basic aspect are ok )CG, weight, motor etc etc.... the add more complexity step by step
-use mathematics!!! lot of this hobby are predictable thanks to mathematics and lot of online tools
-read a lot a find solution for the same problems in other sites... you dont need discover the wheel all the time... check similar ideas, improve and simplify them
good luck!

tx Futaba 9CAP & 8U
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Argonath
Quote:
so i have a plane that is already cut out and ready to be built. the problem is that in real life (i designed it in sketchup) some of the principals dont work out, for example i built one of the wings and how i designed it it is getting no lift. another problem is connecting the wings to the fuselage and the motors to the wings. these problems could cripple the entire build and end up with a fully built plane that cant fly and i will have wasted a lot of glue and time. my question is do you guys have a cutoff, i mean do you have a time when you should just cut your losses.



You've got a whole forum full of enthusiasts. Post some pics and show us what you're doing exactly and maybe we can suggest some changes or methods that can help you get the weight down and/or redesign it a bit to get it in the air.
D.I.L.L.I.G.A.F.
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Argonath
and no, I don't have a cutoff aside from time to build and fly. I simply redesign / rebuild / reconstruct and move on.
D.I.L.L.I.G.A.F.
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