| > <<< Note 1444.0 by RANGER::PITONIAK >>>
> -< Astro mini challenger >-
>
> Hi,
>
> Anyone built the astro mini challenger? If so could they comment
> on how it thermals, I am thinking about getting it, but am concerned
> that the weight may be to big for a small surface area wing.
I've had the hots for one of these myself. Anxiously waiting the response myself.
Bye --+--
Kay R. Fisher |
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| I have read favorable reviews from several magazines on the
mini-challenger. But then again they always like everything.
A mini challenger was flown in 7 cell sailplane in this year's
Astro flight electric contest. It's specs were:
Winspan - 60"
Wing area- 425 sq. in.
Flying weight - 29 oz.
Wing Loading - 9.8 oz./sq. ft.
Motor - Astro Flight 035 FAI
Battery - 6 900 mah
Prop - 7x3 Graupner
My experience says that this ship would climb very well, especially
with the FAI motor. The thermal performance might not be the
greatest due to the short wingspan(less efficient). It probably would
fly fairly fast.
If thermal type flying is primarily what you are looking for, I would
probably lean more toward a 2 meter or larger ship using a geared
motor or Graupner/Keller direct drive motor.
If you can Vacuum bag and have a computer radio, the WACO 570 from
Weston is a great electric sailplane. With A 90" wing, 570 sq. in.
area, and flying weight around 42 oz. with 05 FAI and 7 cells, it
has great sailplane performance. I saw two fly at last year's KRC,
they really fly like high performance sailplanes.
In summary, I think the Astro Mini-challenger is more of a fun
"sport" electric than serious thermalling machine.
I also am a big fan of composite or plastic fuselages for electrics
because they are much less prone to damage on hard landings.
Regards,
Jim
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