GREENBRIER
RACEWAY’S
30th ANNUAL
THUNDERJET
CHALLENGE
.
DATE:
Saturday, April 6, 2024
.
TIME:
12:00 noon (Doors open @ 9:00am)
.
LOCATION:
Greenbrier Raceway (64 Greenbrier ln.
.
RACE:
Box Stock Aurora Thunderjet mini
enduro
.
FORMAT:
Mini-Enduro - 2
Qualifying heats / 8 Racer Main
Qualifying 1 - All racers, Top 6 go to Main - 5 min. Heats
Qualifying
2
-
All Racers except top 6,
Top 2 go to Main -
5 min. Heats
Main - Top 8 Racers from Qualifying - 20 min.
Heats
All racing shall be divided into
groups of 4 Drivers where possible (odd number of racers may
require sitout positions). Driver / group selections shall be
via random draw.
Once a
vehicle/driver has entered the race (Qualifying heat 1,
segment 1), ALL vehicle maintenance (oil, cleaning, etc.)
shall be done on the driver’s race time.
There shall be NO maintenance or repairs permitted during
power ‘off’ periods (e.g. lane changes, sit-outs, between race
heats). Should a vehicle be in pits for repairs and the race
stops (Heat ends),
work on said vehicle must STOP
!!! Any remaining work may resume on vehicle once race
has continued (Green light)
(NOTE: The only exception to this rule shall be a track call
specifically due to damage to vehicle by marshal - During
such situation(s), only the DAMAGED vehicle shall be allowed
maintance. NO OTHER Car shall be allowed work on)
Time ‘off’ between segments shall be just long enough to record results and for officials to change vehicle lanes and lane stickers. No one other than an appointed lane changer shall be permitted to touch any vehicle during time off. Any driver touching his/her car during time off shall lose 2 laps per occurrence.
During any sit-out period(s) and/or between heat races, an official shall collect all vehicles not currently racing and place in track lock box (impound).
As an enduro, laps and/or lap
counters shall not be corrected for vehicles jumping lanes.
Laps shall be recorded as shown.
Jumping / going threw lap counter on wrong
lane - Per the Trakmate system, minimum lap time will be
set meaning you WILL NOT
GAIN laps
should a driver goes through the counter on your lane.
However, you
WILL LOOSE a lap should you go through the counter on
a someone else's lane.
All other rules for race conduct shall be HOSCAR rules. (rotation direction, marshaling own car, conduct, etc.)
At the conclusion of
the race, all vehicles shall be held in impound until a winner
has been declared and has passed tech.
.
ALL prize winning vehicles SHALL be
disassembled (tear down) and inspected,.
HEY, NO ENTRY FEES!!!
VEHICLE REGULATIONS
.
1. CHASSIS
Chassis shall be 100%
Original Box Stock* AURORA THUNDERJET 500
chassis along with Original Box Stock* AURORA
THUNDERJET 500 gear plate..
Chassis with either solid or hollow rivets shall be allowed.
Chassis with silver plated electrical hardware (T/O or W/O
chassis) shall not be allowed. NO chassis or gear
plate cutting or modifications of any kind* shall be allowed.
.(* In recent years, cars have been DQed
for having the gear plate Idle gear nub spread /
tightened buy having the nub "dimpled" - This is an
ILLEGAL Modification)
2. RUNNING EQUIPMENT /
HARDWARE
All running equipment
/ hardware shall be stock* AURORA THUNDERJET
500 parts of original factory size, length,
material, location, ratio and/or design, and may not be
altered. This shall include (but is not limited to)
wheels, axles, gears, and gear plate clamp. Aftermarket
Stock replacement parts shall NOT be permitted.
Only original stock* Aurora
ModelMotoring T-jet street tires shall be
legal (click here for tire
description). No silicone or silicone
coated tires shall be allowed. No rubber O-ring or flat side
tires shall be allowed. Tires may be glued to wheels (Wheels may
NOT be glued to axles). Sanding / grinding of tires
to adjust for true and / or height shall be allowed on contact
surface of tire only (no beveled tires). Stock 'ribs' on
Pre-race conditioning (soaking) of tires
will be allowed. However, Tires shall be DRY when
raced. Traction glue prohibited.
Any reasonable aftermarket mounting
screw(s) and guide pin shall be allowed. However, low profile
or cut (ground) mounting screws are prohibited. Guide pin
length shall fit stock Aurora ‘pin &
lock’ track slot.
All gearing shall be original
AURORA THUNDERJET 500 gears. 'Lapping' of gear plate
brass gears shall be allowed, however, gears must remain
stock AURORA THUNDERJET 500 . NO
aftermarket gears shall be allowed. Drilling, hollowing
out, or cutting for balance or lightning said gears
shall not be allowed. No hop-up gears allowed. Crown
gear must remain stock*.
.
3. MOTOR, MAGNETS, AND ELECTRICAL
Only AURORA Pan Chassis
armature shall be legal. NO tampering of any kind to armature
shall be allowed. Minimum armature Ohms rating allowed -
15 Ohms measured pole to pole after 5 minute cool down
period.
Only AURORA THUNDERJET 500
Ceramic Aurora Pan Chassis magnets shall be allowed...
meaning only Black/Black, Black/Black w/ White stripe,
Green/white, and Green/Orange magnets shall be allowed.
Super II, Tuff Ones, AFX, Auto World, (etc.) magnets shall
NOT be allowed. Magnets shall be gaussed using a
gauss meter and an average of readings will determine
legality. NO cutting of magnets shall be allowed*. NO
magnet shim(s) or flux collector(s) shall be allowed.
Only AURORA THUNDERJET 500
Pan Chassis CARBON or replacement CARBON motor brushes
shall be allowed. NO Silver brushed shall be
allowed. No cutting
of commutator brushes shall be allowed. Brushes shall
remain FLAT on both sides
Only AURORA
THUNDERJET 500 Pan Chassis
Brass pick-up shoes or replacement Brass pick-up shoes
shall be allowed. Silver coated shoes shall NOT be allowed.
All pick-up shoes shall retain their stock* shape
(equal to original length, step down, rail contact pad, etc.)
Wide, long, and/or ‘ski-shoes’ shall not be allowed. Pick-up shoes may not be bent
(other than fine adjustment) to restrict any natural drop or
side movement. Pick-up shoes my not be cut,
flattened, or soldered.. Shunt
wires shall not be allowed. Pick-up
shoe springs shall remain unrestricted.
.
4. BODY
Any stock*
modifications (though not specifically made for the ThunderJet
500) shall be allowed. Any body that extends the front wheels
beyond the chassis and does not use the front stock*
long/short wheelbase chassis
mounting holes are prohibited.
Body
must fit a stock* Aurora Thunderjet
500 chassis without any alterations, except as
noted, and shall have ALL factory accessories intact
(windows, bumpers, grill, roll bars, pipes, etc.).
Body
shall use stock mounting system with BOTH front and back
mounting screws intact.
Painting
of the body shall be permitted on the exterior of body only.
For ease of inspection for illegal repairs (such as cut wheel
wells, grinding, and/or adding weight) painting of interior
(underside) of body may be questioned. No additional body
parts or modifications (wings, interior, spoilers, etc.) shall
be allowed unless factory installed.
Due to
common stripping/cracking of body mounting posts (even
with newer type Model Motoring and/or Auto World bodies),
body mounting posts may be repaired via gluing and/or
wrapping with a few wraps of thread for support (NO
metal sleeves or supports will be allowed). Any broken
body mounting post(s) that requires completely replaced
must use only plastic replacement post material (such as
off another body) and be secured using glue or bondo
(excessive use of glue or bondo may be restricted due to
weight) Body mounting
posts may be sanded/shimmed to adjust for height so long no
other modifications are needed to body, chassis, or gear plate
for body-on-chassis fit.
.
5. MISC.
Ballast (weight) shall not be allowed.
Any part
in question will be deemed illegal.
.
Stock* Refers to most COMMON
known chassis/parts. Although stock, NO ‘skinny’ Indy pan chassis, large
style race or truck tires or wheels,
HOP-UP kit gears (including stock T/O or W/O gears)
axle, gears, wheels, etc. shall be allowed.
CLICK
HERE to view / print the TJC Quick-Glance
reference chart
. .
For
more
information,
contact:
John Peckham
GREENBRIER
H.O.
CLUB of ROCHESTER
64 Greenbrier
ln.
.
jpeckha2@rochester.rr.com
NOTICE
Greenbrier Raceway’s GREENBRIER THUNDERJET CHALLENGE
is an annual event held for the fun and enjoyment of vintage
H.O. scale competition. Race prizes shall be awarded per
availability, but are in no way guaranteed.
.
People
wishing
to sell or trade are encouraged to do so. However, there will
be no format set for this purpose. Please note that all
selling/trading shall be done ‘out of box’, and to keep tables
clear for racer pit space.
.
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