SCAT Electronic News 19 July 2001 issue 602
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- Category: Archive 2001
- Hits: 943
SCAT Electronic News 19 July 2001 issue 602
Table of Contents
==================
Temperature Measurement - Andresen
Fly and Bike - Nats - Augustus
Selig Mini Timer Failure - Mattes
Huron Cup Report
Rohacell Data - Seibert
Missing attachments or other stuff - Oxager
Leica Rangefinder - Andresen
Rangefinders? - Bogie
Fly and Bike - Nats
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Roger- for SEN:
Is anyone interested in flying with me in the Bonanza from Idaho (or
nearby) to Muncie for the Nats? Does anyone going to Muncie for the
Nats have a spare chase bike I could rent or borrow, at least
Wednesday and Thursday for F1J and 1/2 A? Bruce Augustus (208)
726-9422. This email address is being protected from spambots. You need JavaScript enabled to view it..
BA
Temperature Measurement
=======================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Roger,
Would like to point out a mod to all those recording thermal detectors that
can improve performance. A thermocouple is a self generating sensor
consisting of 2 dis-similar metals that generate a small Voltage with a
temperature difference. Thus there is no self heating (wind sensitivity)
and also the fine wires have a faster response time. Both of these are
good.
I have a few temperature adapters that convert the small signal from the
thermocouple to 1 millivolt per degree F or C. These include a 4'
Chromel-Alumel thermocouple of 0.020 dia which is about 5X faster than a
Starline thermistor and can be filed or flattened or replaced with smaller
dia for even faster response. It uses a 9V battery and is about the size of
a mouse.
Besides recorders, these can be used in conjunction with a Digital Multi
Meter, analog meter & probably a laptop or Palm. While they should adapt
readily to Xenakis type recorders, they are incompatible with Starline
Thermal Sniffers which have a highly sophisticated circuit.
Priced at $30ppd with battery and connector, these are less than half of
what Omega or Fluke charges. E-mail any questions.
Thanks,
H
Selig Mini Timer Failure
========================
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Roger,
Have found what I believe is a new failure mode for the latest version
of the Selig Mini timer for F1J. When the third disk was added to the
timer the engine shut-off disk diameter was increased to the point where
it is overlapped by the DT scroll. One of my timers would fail to start
when it was set for about 2 second runs. This only occurred during test
runs of the timer without the engine running and then only once in a
while. Never had a problem with the engine running but it certainly
could happen. Exact time setting would vary from timer to timer due to
speed variations. The problem was that the trailing edge of the cutout
in the engine shutoff disk was digging into the bottom of the DT scroll.
If the engine cutoff shaft was depressed, that's towards the timer
face, it would start running. Inspection revealed that there was a few
thousands of interference between the scroll and the engine disk.
Solution is to shim up the DT scroll as required to provide about 0.010
clearance or so. Problem you may then end up with is very little
engagement of the DT scroll hold down nut which is in itself a problem
in the first place. This is rectified by increasing the depth of the
counterbore in the DT scroll with a #2 counterbore and modifying the nut
to be sure it seated on the bottom of the DT scroll instead of the top.
Suggest all who use this timer check this out ASAP.
Bob Mattes
Huron Cup Report
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HURON CUP 2001
F1A
NAME COUNTRY 1 2 3 4 5 6 7 TOTAL PLACE
J. Parker USA 120 180 197 137 180 180 116 1110 1
C. Markos USA 120 77 191 180 180 180 180 1100 2
C. Lanartowi CAN 120 180 210 180 180 180 47 1097 3
A. Barron USA 95 71 210 180 180 180 141 1057 4
L. Farkas CAN 70 145 210 180 180 180 86 1051 5
A. Schlosberg USA 120 180 172 21 180 180 180 1033 6
T. Boiadjiev CAN 120 180 161 135 180 180 68 1024 7
T. Tzvetkov USA 120 118 210 68 85 180 180 961 8
P. Brun USA 120 121 210 180 74 180 53 938 9
J. Horak CAN 60 117 210 105 180 180 66 918 10
W. Thompson CAN 110 180 207 180 180 - 53 910 11
M. McMahon CAN 120 145 143 99 180 61 - 748 12
G. MacKenzie CAN 120 81 - - - - - 201 13
F1B
NAME COUNTRY 1 2 3 4 5 6 7 TOTAL PLACE
J. Pratt USA 120 180 210 180 180 180 180 1230 1
J. Clapp USA 120 180 210 180 144 180 180 1194 2
W. Ghio USA 120 180 210 180 180 180 138 1188 3
L. Horak CAN 120 180 210 157 180 180 156 1183 4
R. Wood USA 120 148 132 161 180 180 152 1073 5
P. Crowley USA 120 180 64 180 180 180 167 1071 6
J. Brooks CAN 120 112 210 144 160 - - 746 7
T. Ioerger USA 120 180 198 145 - - - 643 8
C. Ackerley CAN 120 164 - - - - - 284 9
F1C
NAME COUNTRY 1 2 3 4 5 6 7 TOTAL PLACE
E. Keck USA 120 180 240 180 180 180 180 1260 1
A. Kirilenko USA 120 180 240 180 180 180 180 1260 1
B. Gutai USA 120 180 240 180 180 180 110 1190 3
F. Schlachta CAN 120 133 240 180 106 153 180 1112 4
B. Sifleet USA 120 180 240 131 180 145 99 1095 5
HURON CUP 2001
F1G
NAME COUNTRY 1 2 3 4 5 TOTAL PLACE
L. Sayer CAN 120 120 120 120 120 600 1
P. Crowley USA 120 120 92 97 36 465 2
R. Wood USA 120 71 22 120 120 453 3
J. Brooks CAN 73 120 61 64 84 402 4
J. Clapp USA 10 72 47 120 - 249 5
T. Ieorger USA 120 120 - - - 240 6
J. Pratt USA 110 69 32 - - 211 7
F1H
NAME COUNTRY 1 2 3 4 5 TOTAL PLACE
C. Markos USA 120 120 - 78 12 438 1
R. Sifleet USA 37 120 120 41 - 318 2
F1J
NAME COUNTRY 1 2 3 4 5 TOTAL PLACE
R. Gutai USA 120 120 106 120 120 586 1
E. Keck USA 120 120 103 120 111 574 2
Rohacell Data
=============
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Hello there
just found your note in the web with regards to ROHACELL respectively
the
statement that the "vapour comming of the ROHACELL is quite toxic"
Kindly note that this is certainly not correct. The material is
calssified
to even burn non-toxic according to the toughest aircraft interior
specs,
such as FAR and Airbus standard.
If you have any questions / comments please feel free to contact us.
Hermann Seibert
Director ROHACELL
Head of Production
Roehm GmbH & Co.KG
Phone : 49 (0)6151 - 183696; Mobile : 171 5849219
Fax : 49 (0)6151 - 183689
E-Mail : This email address is being protected from spambots. You need JavaScript enabled to view it.
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Missing attachments or other stuff
==================================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Hi Roger, for some reason I do not receive pictures etc. mentioned in the
news! In the last issue I miss the pictures from the Helios flight. I just
talked to Jorgen Korsgaard, he got the pictures! I admit that I am far from
being an expert on computer stuff, but I would appreciate if you can help
me. Kind regards, and thanks for all the work you are doing for us all! Tom
Oxager
[Tom (and others)
Some times I have trouble sending attachments , some e-mail services
do not accept them or sometimes are are issues on my system.
You can always get them from the SCAT Web Site
www.aeromodel.com/scat
Follow the link current news and editorial.
Finally while on the subject or attachments , I do not have a way of
out poeople whi cannot recieve attachments so I have to send
them to everyone, even if they get trashed! in some systems.]
Leica Rangefinder
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Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Think Brokenspar would be disappointed with the laser rangefinder as it only
has 2400' range which he will outclimb unless he cuts down the engine run.
H
Rangefinders?
=============
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Hardy,
Nice piece about the Leica rangefinder. Too many digits in the cost for me.
Really, you could find ranges far cheaper. Just get on Interstate 94 in your
town and go west. You will encounter ranges all the way from Minnesota to
Montana, probably far cheaper.
Bill Bogart
......................
Roger Morrell
