SEN-408 April 25 2000
- Category: Archive 2000
- Hits: 419
News and Reports 2000 - First half
SCAT Electronic News 25 April 2000 issue 408
Table of Contents
K&B Parts - Goodnow
Science Olympics - Kowal
Science Olympics Help - Markos
Science Olympiad - Andresen
F1B Science Project - Short
Issue 407 or 408
I need your help - Johnson
Question - Mazzocco
I am looking for at least two sets of K&B Speed needle valve seats. I have
tried K&B [ "don't carry them anymore"] Tony & Addies and several other
places. I believe the part # is 7738 or 7338. Any help will be appreciated.
Thermals Brooks Goodnow
In trying to help David out on his Science Olympics problem I got
on the net and searced for "Science&olympics&airplane&plans$not books"
and the first two sites I was directed to were both the same.
Anyway seems like we have a chance to help some people here. I drew up
a plan and sent it to david as well as answered a number of his questions.
I read up on the science olympics and it seems the promoters give no help
at all to the contestants. David has not been able to find an appropriate
at his local shop all they have is electric props which are way too heavy.
Anyway my point is these people seem to have questions of the simplest
manner that any of us could probably answer. I will do what I can but it
seems if we have someone with a little indoor experience They might
be more help on this indoor exercise. I attach a copy of my drawing for all
to scoff at and complain about the format---Ken---
(See attached file: Scienceolimpics.dwg)(See attached file: science.bmp)
Science Olympiad Help
I have been answering questions by eMail from a number of Science Olympiad
contestants, including "lumberjack" and the more recent David from the
provinces. It's enjoyable, but time-consuming. I try to answer only
specific questions, such as how to make a rib, or how to wind the motor, or
why the wing is twisted. I wouldn't mind being a resource to help answer
such questions. However, the information that would help these kids is
availiable if they spend a little time looking on the internet. The
Science Olympiad has a website: http://soinc.org which has building and
flying help suggestions. Also, the NFFS website:
http://www.freeflight.org has a Science Olympiad section with very detailed
plans and instructions on how to build a model for this event. My own two
publications in "Model Aviation" on the "Double Whammy" (Nov 99 and June,
2000) have most of the information they need for a successful model. The
design has been scaled up by Bucky Servaites and Joe Mekina for use by a
group they are coaching and they are quite happy with it.
My brother is an English professor in California. He gave his class an
assignment for researching a particular author/poet. Several complaints
were that the class couldn't find anything on the internet. His advice was
to look in the library. The point of this story is that if the eMails we
see asking for advice on Science Olympiad models are a result of
insufficient research, then those who are seeking the advice should first
directed to sources where they might have to do a little extra work. The
projects will be more satisfying if they do and the objective of the SO
program will be more closely met.
A good source for Science Olympiad material along with indoor stuff is
Don Slusarczyk's site & e-mail.
site is: members.stratos.net/dslusarc/
Site is similar to SCAT with archive plans & photos. Sign up for the
e-mail to participate in information exchange.
Dick Baxter has been coaching the event for some time and brought the CA
silver medalist to Lomita gym. After flying the SO plane ,he brought
out a Paper Stick with hollow motor stick etc. Was refreshing to see a
Jr building, flying, trimming on his own a year after his first PussyCat.
Dick has some impressive stats re the SO participation, and it would
behoove us to volunteer as coaches if we want to keep the sport alive.
Would expect to see AMA interest as there are more newbies avialable from
SO than all other sources combined.
Shirley Baxter points out that it isn't limited to a guy thing as many of
the gals, known for following instructions well, often won the local
Anyhow the SO looks like a grand opportunity to help budding Engineers of
the future gain some practical hands-on experience. They also have
events for Bridge-Building, Water Rockets etc. which also employ many FF
There is info on the Net, but they also need coaches (us).
F1B Science Project
Dear Mr. Morrell,
I posted a question on the SCAT hom page about possiby building an F1B model
for a science fair project. You replied and had some questions. Right now
I am still looking for a set of parameters that I must meet with my
airplane. The project will be the engineering of an airplane within these
parameters that maximizes certain performance characteristics (time aloft
for F1B, I think.)
[I told Allen he should build something smaller. Such as a Science Olympics
model. .. but it seems that he is not to be deterred. So who
am I to dampen his enthousiasm!]
To answer your questions:
-I think it would be easier to fly the airplane outside, but I see no reason
why it couldn't also be flown inside.
-The size of the model doesn't really matter. I'll build it so that I
optimize performance without breaking any rules.
-I have until late Feb. or early Mar. to have my entire project done, so I
should be done building and testing the airplane by Jan. 2001.
-I am not familiar with the Science Olympics, but I do know that if I built
a model to compete in the Science Olympics, I could not advance to higher
levels of competition because my school doesn't have a team and the Science
Olympics is a team competition.
-I live in Chino Valley, AZ. Its about 2 hours north of Phoenix and 30 min.
north of Prescott.
I realize that F1B modelers are among the best in the world and I don't
anticipate building a model that is capable of competing on such a level,
but in a science fair, the process is the important thing. I think the F1B
rules will give me a good set of parameters as a starting point.
I did have some questions:
Are the models flown in a straight line or in a circle? If straight, they
must travel quite a distance in 3 minutes, so where do you fly?
Where can I find the official rules for F1B? These will be very important,
espicially if I choose to use them as parameters for my project.
Thank you for your help.
Author : scat
Subject : F1B Science Project
I applogise for not getting back to you.
You sent your e-mail to address that I do not use
>I posted a question on the SCAT hom page about possiby building an F1B model
>for a science fair project. You replied and had some questions. Right now
>I am still looking for a set of parameters that I must meet with my
>airplane. The project will be the engineering of an airplane within these
>parameters that maximizes certain performance characteristics (time aloft
>for F1B, I think.)
A simple f1B will do 3 -3:30 minutes in dead air
a champion model will do over 6 minutes in dead air
>north of Prescott.
There are modellers who fly at Eloy near casa Grandle and
a modeller who I think is in your area.
>Are the models flown in a straight line or in a circle? If straight, they
>must travel quite a distance in 3 minutes, so where do you fly?
The models fly in circles. For two reasons - one is so they do not
fly so far - the second is so they can catch thermals and
stay up longer.
Also it is part of the process or adjusting or trimming
the model to fly properly under power and under glide -
very different conditions.
>Where can I find the official rules for F1B? These will be very important,
>espicially if I choose to use them as parameters for my project.
The rules are on the SCAT web site
this is a summary.
the full rules can be found under the aeromdeolling secion of the
FAI web site www.fai.org
The models are typically 1.45 to 1.90 meters in wing span.
also at the web siye itself
www.aeromodel.com/scat there is a section with photos
that includes some F1B models -
I can mail you photo copies of 3 - view drawings if you wish
To : scat
Subject : rubber
What kind of rubber is used in the F1Bs? Is there a standard type or
certain rules to be followed? Where do the modelers get their rubber?
Author : scat
Subject : Rubber
There are no rules as to what kind of rubber. But at the momment
everyone uses rubber that comes from FAI Modelsupply in Sayre, PA.
This rubber is sold directly by them ... see under sources or
their web site www.faimodelsupply.com, and by some model shops that stock
Free Flight materials. The rubber is called Tan 2.
You buy the rubber by weight - it comes in a long strip and you
weigh the motors to get them just 35 gram weight. the weight includes
rubber lube. There are many different 'magical' things people use
to lubricate the rubber and make it last longer and give more power.
FAI Modelsupply also sells lube.
There is a book by Don Ross called Rubber Powered Model Airplanes. This
can be got most places you would find books. It has much helpful
information about getting started with rubber powered airplanes.
Looks like we forgot to increment the issue number with the last issue.
So this is 408.
I need your help
I'm a Scout leader for the 16th Canterbruy Scout Group in the United =
Kingdom, in a few weeks time we are going to camp. One of the activities =
we hopr to do is to build some small catapault gliders.=20
Can you help with any design ideas.
Thanking you for your help.
> Thanks to Steve Geraghty and George Schroedter for their donations.
> Roger Morrell
What are these references to donations about? I see them occasionally. Is
this for money, material, or what?
[Rey, in the previous issue when talking about SEN, I said that there
was no charge. I do not expect any payment and normally would not discuss
this at all, but .. There are costs associated with it, in particular for the
web site and kind of e-mail access that we have. From time to time people
make donations to cover some of these expenses ... and I thank them as it
would be impolite not to do so. I believe that the best contribution is
by sharing ideas and information about Free Flight, our hobby / sport.]