11 by maclaren1


									         Volume 07Issue 03                 Newsletter Editor:   Will Herman                         March 2007

                                                The Prez Sez
Hi everyone,

Didn't we just do this? It seems like only two weeks ago that I sat down to do the Febuary newsletter and now
I have to do March. I didn't know when I signed up for this job that I would be spending half my time sitting at
a keyboard trying to think of a subject for a letter.
There is a growing feeling out there that the newsletter should come out after the monthly meeting not just
before it. Let me know at the next meeting how you all feel about that.
The new frequency board arrived and in my opinion it's pretty impressive. It really looks like it will do the job
for us. I'll bring one piece to the March meeting so you can get a look at it before we get it mounted. I'm
planning to bring it to the field this Saturday and get it up on the wall. If any of you have a cordless power saw
please bring it along so we can make any adjustments to the 2x4's I'll be bringing.

So how many people out there still build from kits or has everyone gone ARF? Myself I still get more
satisfaction out of seeing a long term project fly successfully. It's just not the same spending a week
assembling someone else’s work, throwing in a motor and radio gear and out to the field flying the same bird
two others are flying. I currently have a Pica T28 kit on my bench, the wing is almost complete just need to
figure out the retracts I'll be using before placing the last couple of ribs. The project has been sidelined
however by a dreaded ARF (a spitfire) which in turn has been sidelined by my wife insisting that the hobby
room gets moved out. So now I'm in the process of moving everything into a new shed we just had built. She
has not yet asked me to put a bed out there so it's not all bad! If you have a kit in the works or are scratch
building let me know so I can publish the details, give other people the incentive to give it a try. I'm including
an article on the subject of scratch building and kit bashing, maybe you'll get some ideas.

See you all Thursday March 1st
Mick Fox

Do You Have an Itch to Scratch?
  by Bill Bowne

          Do you have an itch to scratch? Scratch build, that is. One of the greatest pleasures in modeling is creating your
own design—something that no one else at the field has. I’ve been doing it for more than 20 years, and I still enjoy it.
          Let’s get one thing straight, before we go any further. When I refer to ―scratch build‖ I mean draw up your own
plans and build from them. I don’t mean building from someone else’s plans, because they’ve done all the hard thinking
for you. Nor do I advocate making scratch builders grow their own balsa trees!
          I believe that using stock parts and subassemblies from other models in a new model still rates as scratch
building, although I can understand how others might differ. The FAA says that if you do 51% of the work in building a
full-scale airplane, then it’s a home-built airplane. I say it’s the same for models.
          Okay, how do you get started in scratch building? Actually, you can do it either of two ways. You can plunge
right in, or you can work your way in. That’s how I started, by working my way in. Kit-bashing, that is, starting with a
kit and modifying it until no one could recognize it as a kit. Kit bashing lets you take known good components and
combine them with your own ideas. As long as you don’t drift too far from the original design (at least, at first), you

can’t go wrong.
           So, let’s talk about how to kit bash. The easiest way to start is by changing wing tip and tail shapes. As long as
you keep the areas pretty much the same area, all will be well. Don’t get paranoid! If the airplane flies well with a 50-
square-inch stabilizer, it’ll fly just as well with 48- or 52-square-inch one. On the other hand, making a few changes in
outlines can make a big difference in the airplane’s appearance.
           Going further, you can make a high-winged airplane into a shoulder or low-winged one. You’ll lose some
stability as you go, so either increase the dihedral or add ailerons! When I converted a Little Stik into a low winger, for
example, I traced the side view of the fuselage and wing, and then moved the wing profile straight down to the bottom of
the fuselage.
           This is where the plans come in handy; just flip them over and trace through them. If you can’t quite see
through, apply a little oil and the plans will turn transparent—that’s cooking oil or clean machine oil. Don’t use your old,
filthy lawnmower oil and complain about it being opaque! [Technical Editor’s note: this is very messy and you must
cover the oiled plan to keep it from getting oil on the balsa or anything else.] Keep the stabilizer the same distance back
from the wing and keep the same center of gravity.
           A Xerox makes replicating the wing side view much easier, provided the Xerox makes true copies. I’ve run into
several that didn’t. To check, compare the copy with the original. Or Xerox a ruler and compare that to the original. (As
a side note, it’s always a good idea to trace or Xerox the ribs and bulkheads when you build a kit, so you have templates
for repairs. If you Xerox them, of course, make sure they match the originals!)
           When you change the wing’s position, you’ll have to redo the fuselage side. One solution, popular with fully
symmetrical wings, is to just flip the fuselage over. Since the top and bottom of the wing are the same, the wing saddle
matches both ways. If you can’t do that, then copy as much as you can. Use the same structural methods the original
designer did; just change the shapes of the parts.
           The hardest part of making a model into a low-winger is usually the landing gear. If you’re using foam wings,
this is easy; you can even buy preshaped landing gear blocks. One of the reasons I like tail draggers is how easy it is to
set them up. For a tail dragger, if you don’t want to diddle with plywood ribs and the complexities of mounting the
landing gear in the wing, just mount it at the wing leading edge. As long as you make sure the gear sweeps back enough
so that the axle is under the leading edge of the wing, you should be okay.
           Part of the fun of kit bashing is that you can improve an airplane’s performance as you go, for example, adding
bottom rudder. When the rudder is deflected, it exerts a sideways push on the tail of the airplane. If most of the rudder is
above the airplane’s center of gravity (as seen from the rear), the push will add roll to the airplane’s yawing motion.
Please, don’t confuse this with adverse yaw! One way to cure it is by mixing in aileron compensation via a computerized
transmitter but if you can design it out, you don’t need the fancy transmitter!
           Here’s a typical top rudder (as in an Ugly Stik). Notice that when the rudder is deflected to the left, the airplane
rolls to the right (The red dot in the rear view is the roll axis as seen from behind). My Sylph has this pretty badly—I can
turn the model on rudder and elevator alone, without any need for aileron.
           But, if you move a large portion of the rudder down below the roll axis, you reduce the effect of the rudder on
rolling. This is great, if you plan to do stall turns, slips, crabbing, or other maneuvers that entail rudder. Ever notice how
all those Extras, CAPS, and other aerobatic full-scale models have their rudders shaped?
           But kit bashing can go further than moving the wing up or down or changing the tail shapes. You could start
with a common low-wing sport kit such as the 4-Star series, then add a turtle-deck and chin scoop. Throw in some block
for a streamlined spinner, curved tail surfaces, and dummy landing gear housings, and you have a ―Sorta P-40.‖
           Remember, most of an airplane’s personality is in the fuselage, so even if you use a Hershey bar wing on an
Me-109, most of the personality will be there. Heck, it’ll be a lot easier to fly, too! Unless you plan to compete in a Scale
event, what does it matter? I’d rather have a good-looking airplane that looks well, then a great-looking one I’m too
scared to fly!
           Or, take two Stiks and make a ―Zwilling‖ (twin fuselage). If you use a constant-chord wing, all you need to do
is cut out more ribs. If you do a twin of something like a Kougar, use the root chord for a constant chord center section.
    Start simple, then work your way up. At first, you’ll see people staring at your model, trying to figure out what’s
different about it. Finally, they’ll get it. As you get more into kit bashing, you’ll see them take longer and longer to
figure it out. Finally, they’ll have to ask you those sweet words: ―Okay, I give up. What is it?‖

                               FEBRUARY MINUTES

Meeting Opened at 7:00 PM
   Officers: Pres: M. Fox, V. Pres: S. Fox, Treas: T. Fenn III, Sec. T. Campbell, Safety Officer:
Bill Hermes, Newsletter Editor: Will Hermann,
   Members: Jerry West, Rory Boyer, Jeff Ochs, Rich Hotchkiss, Jerry Fenstermacher, Steve
Mason, Eric Fisher, Tommy Romanowski, Lynn Heishman, Jack Putnak, Ron Boyer, Gary Burrows,
Don Adams, Bart Bergman, Ed Koharik, George Benoit,
Tim Meyers
   Guests: Bill Lewis

  Treasurer’s report: $2,576.86 in bank account. An additional $130.00 in memberships.
Windsocks have been purchased.
Motion to accept: Rory Boyer, Second: George Benoit, Approval: unanimous
  Minutes: January 4, 2007 minutes read. No corrections.
Motion to accept: Ed Koharik, Second: Jerry West, Approval: unanimous

   Bollin Field Safety Report: No new items.

   Flight Training:
       Steve Mason and Eric Fisher are the new Instructor Pilots for 2007. Bill Hermes is no longer
an IP.
   Discussion about location of Club owned airplanes and transmitters. Custody transferred from
Pete Haring to Eric Fisher.
New AMA rule is 60 days for flight training. (Used to be 30 days).
   SOLO: Tommy Romanowski trained by Eric Fisher
   Steve Mason is working with Jack and Susan Putnak
   SOLO: Larry Weatherwax trained by Jerry DeBach

   Old Business:
   Bollin Field lease agreement with the City of Sierra Vista –
   No news from the City of Sierra Vista.

  Bollin Field Sign on Charleston Rd – Bill Hermes talked to John Startt. Per Mr. Startt, the sign
was taken down because the family complained about the spelling.

    Cable Fence –
     Mick Fox inspected the cable fence for reflectors. The reflectors need to be secured in the
middle of each section of cable. Discussion about adding some orange plastic fencing to improve
visibility. Consensus that the plastic would not be visible at night. A letter to the City of Sierra
Vista stating our safety concern has not been written. Bill Hermes stated that the club should send a
letter to the City as an implied ―CYA‖ action.

   Bollin Field Frequency Board –
   Jerry West attended the January AMA Convention in Ontario, Ca. Per discussion with AMA
representatives, AMA does not have a board to sell nor do they have a set of plans. However, AMA
does have requirements listed under flying rules on the AMA website.
   Eric Fisher queried the internet (RC Universe) and came up with several examples of frequency
boards. Also, there is an independent source for purchase of a board.
Motion to purchase a frequency board by Eric Fisher, Second: Steve Mason (Note: Tom Fenn Jr.
recommended installation at the East end of the Ramada (where the old bulletin board is located).
   Long discussion of how the board is to be used. Frequency board should have a place for AMA
Card and should include a clothespin which can be clipped to a transmitter antenna. Members are
not sure of how non-members without an AMA card should be represented on the board. Tom
Campbell suggested that the club make up a card or clothespin on which the persons name can be
written in. Loss of frequency clothespins is still a big problem.

   Open House-
   Eric Fisher and Steve Mason are gathering ideas for an open house scheduled for May. Eric
asked to membership to offer up any ideas. Don Adams said that he has some banners for towing by
   Ideas include: Parking, food, Public Address System and emcee, raffle, radio and newspaper
adds. Bring planes, helicopters, etc.

    New Business:
    Small Windsocks – 11 new windsocks were purchased. One has been installed at the airfield.
Tom Fenn recommended that the big windsock should be let go. People do not seem to use it and it
is difficult to replace.

   Fathers Day Fun Fly:
   CD is Bill Hermes. Scheduled for June 16, 2007. This year it will be an AMA sanctioned event.
Recommendation that engine/motor size be equal to or less than 1 cubic inch.
Recommendation that two pilot classes be represented this year, one of new pilots of low experience
and one for pilot of advanced experience. More details to be discussed at the March meeting.
   Bulletin Board – The existing bulletin board is coming apart and will be displaced by the new
frequency board. Tom Campbell offered to draw up some ideas for presentation at the March

   Motion to adjourn: Ed Koharik, Second: Lynn Heishman

   Meeting adjourned at 8:00 P.M.

         The next meeting of the MMRCC is scheduled for March 1, 2007 at 7:00 P.M. The meeting
will be held at the Northrop Grumman facility. Personnel are required to sign-in and sign out for
security purposes.
   See you at the meeting……………….Will


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