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IMDRA National Races 2010
June 11, 12, 13 - Rockingham, NC
August 13, 14, 15 - Lynwood, IL
October 1, 2, 3 - Atlanta, GA
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IMDRA NEWS:
All 2009 IMDRA Rules are in effect for 2010 Season.
NO IMDRA RULE CHANGES FOR 2010
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Rule Amendment for 2010 Class Addition at
Lynwood R/C Dragway
Rules - Lynwood 10.5 Class - Tru 1.05" (No
Index)
A. Any RWD car with a full door slammer body permitted. No Funny Car or
Dragster bodies allowed.
B. Must have a hood scoop or blower hat, no dragster bodies allowed.
C. Wheelie bars of any kind will not be allowed. This includes thumb tabs,
pick up tabs, chassis/body extensions, etc., that may act in a manner so as
to keep the car from flipping over.
D. Rear wings may extend 2" rearward beyond the back deck with side dams
extendingno higher than 1" from rear deck.
E. Maximum wheelbase of 12 inches.
F. Rear tires will be limited to 1.05" maximum width and 3.00" maximum
diameter.
G. Minimum weight of 45oz for electric cars and 43oz for nitro cars
permitted.
H. Any electric motor, as specified in Section III.2.A, permitted.
Section III.2.A. - Electric Motors.
i. The use of any mass produced brushed or brushless motor readily available
through a retailer or distributor is permitted. Motors must measure a
maximum of 2.5 inches in diameter discounting any cooling fins or heat
sinks, and a maximum of 3.5 inches in length from end bell to end bell.
Prototype or experimental electric motors are not permitted.
ii. Electric motors may be used with micro switches or an Electronic Speed
Control (ESC). Specifications for ESCs are listed in Section 3 below.
iii. Cars utilizing micro switches must have an operational method of
shutting
down power from the battery to the motor in case of emergency. Cars
utilizing ESCs must have an operational "ON/OFF" switch to turn off the ESC
and to disable power from the battery to the ESC in the form of quick
release connectors easily accessible without removing the body. Both these
items must be clearly marked and visible to anybody handling the car.
iv. Motors may be hard soldered to ESCs when applicable.
I. Any nitro motor, as specified in Section III.2.B, permitted, with a
maximum limit of 0.18 cid.
Section III.2.B - Nitro Motors
i. The use of any mass produced Nitro motor, readily available through a
retailer or distributor is permitted. Prototype or experimental nitro motors
are
not permitted. Further cubic inch specifications are listed in the
individual class specifications.
ii. Nitro motors must have functioning metal throttle return spring.
iii. Any type of modification is permitted.
iv. Exhaust of Nitro motors must be pointed upward.
J. Nickel based batteries consisting up to ten (10) cells, as specified in
Section III.4, permitted.
K. Lithium based batteries, as specified in Section III.4, permitted, with
the following limits:
Section III.4 - Batteries
A. Main power, transmitter and receiver batteries can be made up of Nickel
Metal Hydride (NiMH), Nickel Cadmium (NiCd), Lithium Polymer (Li-Po) or
Lithium Ion (Li-Ion) cells.
B. All Nickel based round cell battery packs must consist of cells with a
nominal voltage of 1.2V, any size (Sub C, AA, etc.).
C. All Lithium based battery packs must consist of cells with a nominal
voltage of 3.6V or 3.7V with an allowable maximum of 4.205V per cell.
D. Lithium based batteries are allowed as main power source, as well as the
power source for transmitters and receivers. Please be advised that hard
cases will be compulsory on Lithium Polymer batteries as per Lynwood R/C
Dragway rules.
E. Participants will use the proper settings in their chargers for the
various battery chemistries at all times to ensure safety in the pit area
and to minimize damage to equipment and racing facilities. E.g.: charging
LiPo batteries using a NiMH setting is not permitted. We also recommend that
participants follow manufacturer's instructions at all times regarding
safely charging and discharging batteries.
F. Heating Lithium battery packs to more than 110°F is strictly prohibited.
G. Batteries must have connectors and cannot be hard soldered to switches or
ESC.
Allowable Battery Configurations:
a. Small Block (2S battery): 8.410V maximum voltage, 400A maximum burst
current as calculated using manufacturer's specifications for capacity and
burst discharge rate.
b. Big Block (3S battery): 12.615V maximum voltage, 267A maximum burst
current as calculated using manufacturer's specifications for capacity and
burst discharge rate.
Section 3. Electronic Speed Controls (ESCs)
A. The use of any mass produced ESCs readily available through a retailer or
distributor is permitted.
B. ESC's must have an operational "ON/OFF" switch and quick release
connectors on
the battery wires as listed above in Section III.2.A.iii.
C. The use of additional capacitors on the power wires is permitted.
Lynwood R/C Dragway |
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