Hi Bill,
Did you notice that the Aspect Ratio for the skinny (5.5) wing is
almost the same as we've been flying for the last two years and those
have been flying quite well. That's 50 x 7 and now 40 x 5.5. Whoopee!
Anyway, I made up a bunch of various chord wings and different length
tail booms and my 15 cm wing and 25 1/4 overall length flies quite
nicely at this point. 1/3 motors are around 1:30 (in our 22' ceiling)
give or take a little and that would be around a nice 4:30. Model is
a little heavy (7.5) as it was to be test bed for all sizes. Using an
old beat-up grey peck prop which I still think work best except for
the hassle of making them. Now fighting with the narrow wing which I
feel is being over driven by my Banks L.E. stab. Awfully touchy.
Going to make a stab with a lot less lift and see if co-operates a
little better.
Hope you can finally make it to the Kibbee Dome next year. I
understand (the last I heard) that Bruce Kimball and Ralph Ray are
working on another "Battle Near Seattle" for next year.
Chris Borland - Sacramento
On Sep 27, 2008, at 11:46 AM, Bill Gowen wrote:
>
> The kit manufacturers are going to be thrilled by this. As far as
> flyability goes the dimensions look okay. The stab span is small.
> The 2006 rules (40cm wingspan) permitted a 28 cm stab span with no
> chord limit.
>
> ----- Original Message -----
> From: Jeff
> To: Indoor_Construction_at_yahoogroups.com
> Sent: Saturday, September 27, 2008 1:38 PM
> Subject: [Indoor_Construction] Wright Stuff designs for the this year
>
> OK, this years rules are out, slightly different twist to encourage
> design variation this year.
>
> While the wing span is limited to 40 cm max, the wing chord is
> unlimited. Except you get a bonus at state contests for 6.5 cm max
> chord and at nationals for 5.5 cm max chord.
>
> Stab limited to 20 by 6 cm, 20 cm prop, 7 gm max, 1.5 gm rubber.
>
> OK, so my question. How should one adjust the distance between wing
> and stab as the chord changes?
>
> I'm fairly sure equations are somewhere on the web to estimate this,
> and variations have been discussed in this list. Pointers to those or
> appropriate key words to search also appreciated.
>
> Thanks,
>
> Jeff Anderson
> Livonia, MI
>
>
>
>
>
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Received on Sat Sep 27 2008 - 12:35:32 CEST