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Model Forum / Radio Controlled / Air Models / May 2009



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Old Top Flight Nobler Fit & Finish

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Tim Wescott - 06 May 2009 00:25 GMT
AAAAAGHGHGHGHGHGHGHGHGHHHHHHHH!

Thanks for letting me get that off my chest.  I feel so much better now.

(now I just need to reengineer the horizontal stab, and find some decent
wood to build it with...)

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Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at http://www.wescottdesign.com/actfes/actfes.html

Morgans - 09 May 2009 00:55 GMT
> AAAAAGHGHGHGHGHGHGHGHGHHHHHHHH!
>
> Thanks for letting me get that off my chest.  I feel so much better now.
>
> (now I just need to reengineer the horizontal stab, and find some decent
> wood to build it with...)
**************************
 <<<<chuckle>>>>

WoW, I hope you feel  better now!

As I recall, you were working on a duplicate old timer, or something.  Did
something go wrong with your horizontal to make you feel that way, or
something?
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Jim in NC

Tim Wescott - 09 May 2009 01:47 GMT
>> AAAAAGHGHGHGHGHGHGHGHGHHHHHHHH!
>>
[quoted text clipped - 11 lines]
> Did something go wrong with your horizontal to make you feel that way,
> or something?

No, it's because (a) the way Top Flight engineered the kit you can't hold
anything where it's supposed to be, (b) half the wood is crappy, and (c)
the die cutting is horrible even where the wood isn't (I'd have preferred
print wood.  You can do _nice_ work with print wood).

I'm going to keep their interesting milled leading and trailing edges
(which are far from being contest grade balsa, but I'll make up for that
by being far from a contest grade pilot), but I've already made up some
1/2" balsa plywood for the "blocks" (their supplied blocks had the grain
running the wrong way for strength) and I'll just use some of my own
sheet for ribs, putting them in full height and sanding to an airfoil
later.

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Morgans - 09 May 2009 02:03 GMT
> No, it's because (a) the way Top Flight engineered the kit you can't hold
> anything where it's supposed to be, (b) half the wood is crappy, and (c)
[quoted text clipped - 8 lines]
> sheet for ribs, putting them in full height and sanding to an airfoil
> later.

Understood.  Seems like the goood ole' days were really not all that good,
sometimes.  <g>

I think you should reconsider not cutting new ribs at least close to the
right shape.  You will live to regret all of the sanding later, if you do
not.  I suppose if there is not too much to sand it might not be too bad,
but it always seems to bite my butt when I do something like you are
suggesting.
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Jim in NC

Tim Wescott - 09 May 2009 05:46 GMT
>> No, it's because (a) the way Top Flight engineered the kit you can't
>> hold anything where it's supposed to be, (b) half the wood is crappy,
[quoted text clipped - 18 lines]
> bad, but it always seems to bite my butt when I do something like you
> are suggesting.

The method is exceedingly popular among the C/L stunt crowd; I have no
idea why.  I've never done it before, so I thought I'd give it a whirl
and see just how bad it is.

Although I suspect that I'll end up agreeing with you, it'll be better
than trying to float a bunch of stab ribs up in the air to correctly mate
up to a leading edge.  I'd be scheming on how to prop them up the right
distance, except that I have to rework each and every one of them anyway.

Maybe I'll rough cut things, to keep the sanding down to the last 1/20
inch or so.

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http://www.wescottdesign.com

 
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