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Club 40 Rules
www.Club40Racing.com
The 2011 RCPRO Club 40 Rules and documents for racing
Club_40_2011_Rules_for_the_Airplane.doc -
Web Page Format
2011_Procedures_Sections_1-15.doc
2011_Addendum.doc
Notes from Ken Erickson, RCPRO Club 40 Committee Chairman
Explanation of Changes for 2011
There are a few changes in the RCPRO Club 40 “Rules” document and also in
the “Procedures” document. Starting from the top of the “Rules”
document, they are:
New Wording in “Airframe Regulations”: Wheels must have minimum
diameter of 55 mm and minimum width of 20 mm. Hint: Stock wheels (60 mm) or
DuBro 2 1/4 Low Bounce (57 mm).
Reason: We want as much uniformity as possible in the airframe drag.
We have been informed that the stock wheels wear away for those flying from hard
surface runways. Some get very small. We were asked to specify a minimum size
for wheels in use and to allow a harder wheel, slightly smaller than the stock
wheel. As I fly from grass at almost all the fields around Columbus, In, I did
not know this. After verifying the wear, by checking with committee members and
other promoters around the country, I checked out available wheels. The DuBro
Low Bounce wheels are harder rubber and the same width as the stock wheels. They
are 57 mm in diameter. This change was submitted to the committee and officers
and approved. New stock wheels are 60 mm in diameter. When your wheels have worn
to 55 mm in diameter, get a new set of stock wheels or a new set of DuBro Low
Bounce or some other 20 mm wide hard wheel.
New Wording in “Propulsion Systems Regulations”:
Wording transferred in from the “Procedures” document, with
clarification: Parts, which may be changed and may come from any source:
Bearings, Gaskets (& head shims), Glow plug, head and crankcase bolts,
propeller nut & washer and Remote needle valve assembly.
Reason: This was the only line about what goes up in the air that was not
in the one-page “Rules” document, where it belonged. The clarification,
after much discussion, is that head shims may be removed, changed or added. We
do not recommend it, but it is not forbidden. AMA rules silently allow this; we
state it. Note that Backplate Engine Mounts have been removed and are not to be
used.
New Wording in the line for “Acceptable Alternatives”: or any
clones/copies of the listed engines.
Reason: We were asked to allow more brands of engines. If someone has a
sport .40 engine, probably not as good as the best brand, they should still be
able to give it a try. This wording was submitted to the committee and officers
and was approved. We do not recommend buying a cheap, inferior engine, if you
do not have a .40. But we do want people to get their feet wet in this event
with sport engine to which they already have access.
New Wording in the line for “Sport/Novice Class Engines”: or clones.
Same reason.
Changes in the “Procedures” document:
The “Parts which may be changed” line was removed, transferred to the
“Rules” document.
Reason: See above.
Recommendations for the matrixing and scoring programs from Paul Herman were
added in the appropriate places.
Reason: They work fine, and have for years.
A recommendation for the NMPRA JudgeTimer program, written by Stan Douglas and
significantly updated by Hank Kaufman was added.
Reason: Once you check it out, you will know. It is great. You can test
it using the mouse or keyboard .
The “Addendum: Racecourse Personnel and their Duties” has not changed.
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