Thanks! I really appreciate your time and input. Good luck in flight and in life.
James Alderson
To: Indoor_Construction_at_yahoogroups.com
From: wdgowen_at_gmail.com
Date: Sat, 20 Apr 2013 22:12:49 -0400
Subject: Re: [Indoor_Construction] F1M Design
My model is 32.5" OA. I think 30" would be fine.
I've used .030" carbon tubes for wing spars and had pretty good luck
with them. My current model uses balsa spars about 040" x 040" with
a .010" carbon rod glued to the balsa top and bottom. These are
stiffer and lighter than the carbon tubes.
Aki (3 world records) and Larry Coslick (2 AMA National records) use
built-up props and do well with them. I use sheet balsa blades.
On 4/20/2013 6:18 PM, James Alderson
wrote:
Thanks for your quick response! I am rather
new to duration events. Actually, I'd like to keep the
length shorter so I can allow more weight for the flying
surfaces. I do not have the best wood to work with so
getting sufficient wing spars to weight is challenging for
me. I did that with my recent F1L and it seemed to work
out okay.
I will go with a fixed prop for starters. What about a
built-up prop rather than sheet blades to reduce nose
weight?
Thanks,
James
To:
Indoor_Construction_at_yahoogroups.com
From: grrd_moore_at_yahoo.co.uk
Date: Sat, 20 Apr 2013 21:18:13 +0100
Subject: Re: [Indoor_Construction] F1M Design
I'm guessing that the length
restriction is for practical
transportation reasons? There is no
limit other than span and weight for
F1m.
Also I guess you will be using a vp
prop?
You can easily build the model
underweight and ballast the tailboom to
get the cg in the right place then
ballast on the cg if necessary to get
the model weight correct.
You could also make the model longer
by using an additional tail stinger to
the end to the end of the tailboom. This
would require less ballast and allow
more strength to be built into the
structure.
--- On Sat, 20/4/13, aldershine <aldershine_at_hotmail.com>
wrote:
From: aldershine
<aldershine_at_hotmail.com>
Subject: [Indoor_Construction] F1M
Design
To: Indoor_Construction_at_yahoogroups.com
Date: Saturday, 20 April, 2013, 16:51
I just read the thread of
posts for F1M on Hip Pocket. Our
club will be adding that event
for next indoor season at our
Cat II site in Albany, OR. We
plan to fly 1/4 motors, no
touch.
Is there a way to keep the
overall fuselage length under
30" and keep the CG rearward
enough? For my first model I am
thinking of a traditional design
with dihedral, no tip plates and
single fin.
Thanks,
James Alderson
Willamette Modeler's Club
Received on Sat Apr 20 2013 - 20:22:11 CEST