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All things KOH 2020
- Thread starter Fouledplugs
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Mumblewood
TJ Enthusiast
Congratulations to John Mathews from Auburn car repair and off road for his 5th place finish in the 4500 class!!!
OP
Jesse Haines just placed 1st in the 4600 class with his leaf sprung/SUA Roxor. He is running portals (his design) with a reduction of 7.xx for crawling.
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If the first stock class rig finishes and you are in a Legends Rig still on course, you may want to rethink your race strategy.
OP
OP
Looks like Jon Schaefer sponsored by Gerald at Savvy Offroad just rolled onto the podium in his Jk. Second place for the Alabama guy in the 4600 Stock class.
OP
As the speeds increased, the safety standards were raised for the Unlimited 4400 class. For the cars that would be unable to pass the new tech without a complete rebuild, Dave formed the Legends 4800 class and limited them to a DOT 37 and one shock per corner. So, another way to look at the class is they are the old slightly modified Unlimited cars. At no point should they get beat by a stocker.just a driver mod is all that’s needed.
How many stockers are going to finish?
OP
*Update*
Current Live Coverage:
The KoH T1 Trophy Truck Race is complete:
Current Live Coverage:
The KoH T1 Trophy Truck Race is complete:
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The trophy trucks are amazing of course, but I actually preferred watching the Every Man Challenge... and would have actually preferred more coverage of the stock class.
OP
Is there any way to watch the full live stream after the fact? Yesterday's is still on youtube but only the last 4 hours...
I won't be able to watch tomorrow live so just wondering if there's another way to watch...
I won't be able to watch tomorrow live so just wondering if there's another way to watch...
OP
Other than searching around youtube or ultra4’s website, I have nothing to help you.
jesseshoots
TJ Enthusiast
How does a Roxor with portal axles get classified in the "stock" class? I'd think it would be a 4500 rig. Doesn't seem true to the spirit of the stock class
OP
There are no axle restrictions. You have to keep the same suspension type (leaf has to stay leaf, spring has to stay spring etc) but you can swap axles.
From the rule book... (I looked em up last night out of curiosity)
STOCK CLASS / 4600
The spirit of the stock class is to allow OEM and aftermarket vendors the
opportunity to showcase their products while providing a venue for teams to
compete in a true drivers’ class in vehicles that closely relate to street driven
versions of the same. The driver of record will bear the burden of proving
legality of any part of their vehicle including but not limited to;
Motor/Transmission, frame length, suspension configuration.
3.1 ELIGIBLE VEHICLES
3.1.1 Any and all four-wheeled, four-wheel-drive production automotive based
vehicles are eligible for competition, providing they meet all the rules and
regulations specified herein, and with the following limitations and
exceptions: Minimum of one thousand (1000) units were produced by the
original manufacturer for given model year, for given market/region. Vehicles
produced for foreign markets may be imported for competition, but features
and/or components found on vehicles produced for different
regions/markets shall not be combined in any one vehicle if doing so would
violate any rules or regulations specified herein.
3.2 FRAME & BODY
3.2.1 Stock frame (frame is considered to be the primary frame rails and all
permanently factory cross members) must be retained, and must be
complete and unmodified. No material may be removed for any reason and
no section of the frame may be 'massaged' or re-shaped with the following
limitations and exceptions: The rear portion of the frame and rear cross
member may be removed or trimmed for the sole purpose installing an
aftermarket rear bumper. Frames may be reinforced by adding material.
3.2.2 Stock body (body is considered to be the full cab, including all interior and
exterior sheet metal, bed, doors, hood, fenders, grill, etc.) required. The body
must be complete and unmodified, with the following limitations and
exceptions: Holes may be cut in any part of the body for the single and
exclusive purpose of allowing roll cage tubes and transmission/transfer case
linkage to pass-through the body. Open holes must be kept to within
.5"(12.5mm) of the diameter of any tube or linkage that passes through the
body, with further restrictions related to holes in firewalls specified in Section
2.4.5. The exception to this rule is the allowance for rocker panel protection
limited to the area between the wheel wells. You may cut into the body
and/or reinforce this area. You may not interfere with the mating surface of
the stock door and doorsill. The stock doorsill must be retained and
unaltered.
3.2.3 Stock doors may be modified to create half-doors and/or may also be
replaced with tubular doors. Doors must open and close, bolted on panels
are not allowed.
3.2.4 Stock windows (glass) are not required, but are permitted, providing they
meet DOT regulations. Alternatives to traditional safety-glass may be
allowed, on approval of Hammerking Productions Inc.
3.2.5 Front inner fenders must be complete and unmodified, with the following
limitations and exceptions: outer fenders (wheel well openings) may be
trimmed for the single and exclusive purpose of allowing for tire clearance.
Modifications to the outer fenders must preserve the look of the stock wheel
wells, as originally manufactured, and must not be trimmed excessively (no
more than a 2" (50mm) gap between any part of the outer fender and the
tire at full compression).
3.2.6 Front outer fenders may be replaced with OEM-style aftermarket fenders
(flared fiberglass fenders are permitted).
3.2.7 Rear inner and outer fenders must be complete and unmodified, with the
following limitations and exceptions: outer fenders (wheel well openings)
may be trimmed for the single and exclusive purpose of allowing for tire
clearance. Modifications to the outer fenders must preserve the look of the
stock wheel wells, as originally manufactured, and must not be trimmed
excessively (no more than a 2" (50mm) gap between any part of the outer
fender and the tire at full compression).
3.2.8 Extensive damage to any portion of the frame or body (prior to race start)
may be considered illegal modifications, and repairs may be required, as
determined by, and at the sole discretion of the Chief Technical Inspector.
3.2.9 Stock body mounts may be modified or eliminated, with the following
limitations and exceptions: The relationship of the body to the frame must
remain within 1" (25mm) of stock configuration, as originally manufactured.
Stock body mounts shall not be modified or eliminated for any reason other
than to allow any part of the roll cage to pass through the body in order to be
securely attached to the chassis.
3.2.10 Factory headlights are required and must be functional.
2020 Ultra4 Rulebook V5.0 36
3.2.11 Factory bumpers are not required and may be modified or eliminated.
3.3 ENGINE
3.3.1 Stock engine must be retained, but may be replaced with any available in
make/model/year. Any and all modifications are permitted, with the
following limitations and exceptions: Stock engine-block must be retained, as
originally manufactured (boring, stroking and other internal engine
modifications are all permitted). Forced-induction of all types is not
permitted, unless factory-equipped.
3.3.2 If equipped with a water-cooled engine, the radiator must remain within 6"
(150mm) of the original location, as originally manufactured
3.4 TRANSMISSION
3.4.1 Stock transmission must be retained, but may be replaced with any available
in make/model/year. Any and all modifications are permitted, with the
following limitations and exceptions: Stock transmission case/s must be
retained, as originally manufactured. Auxiliary transmissions (e. g. secondary
transmissions, under / over- drives, etc.) are not permitted.
3.5 TRANSFER-CASE
3.5.1 Any and all transfer-cases are permitted, providing they meet all the
additional rules and regulations specified herein.
3.6 DRIVESHAFTS
3.6.1 Any and all driveshafts are permitted, providing they meet all the additional
rules and regulations specified herein.
3.7 AXLES
3.7.1 Any and all axle assemblies are permitted, providing they meet all the
additional rules and regulations specified herein.
3.8 STEERING
3.8.1 Steering components may be modified or eliminated and steering
components/linkage may be installed in any location and orientation, with
the following limitations and exceptions: All vehicles must retain some type
of mechanical steering linkage (e. g. 'full-hydro' steering is not permitted,
unless factory-equipped), and said linkage must be capable of controlling the
direction of the steering wheels/tires without the benefit of any additional
power-steering aids. The steering box (or rack, if so-equipped) must remain
within 4" (100mm) of the stock location. No part of the steering linkage shall
be oriented so as to be partially or substantially parallel to the frame rails or
any part of the suspension linkage, with the exception of the drag-link and
track-bar (if so-equipped, and unless otherwise- equipped, as originally
manufactured). Rear-steer is not permitted.
3.9 SUSPENSION
3.9.1 Wheelbase must remain within 3" (75mm) of stock, as originally
manufactured.
3.9.2 Suspension configuration must remain stock, as originally manufactured
(meaning that leaf springs must remain leaf springs, coil springs must remain
as coil springs, torsion-bars must remain as torsion-bars, etc.).
3.9.3 Leaf springs may be replaced with any leaf springs and may be installed in
any location and orientation, with the following limitations and exceptions:
Leaf springs must be connected directly to the axle assembly, unless
otherwise factory-equipped. Links/linkage may be installed, but the leaf
springs must be capable of locating the axle assembly relative to the chassis
in any direction without the use of any such links/linkage. As such, quarterelliptical springs, transverse leaf springs, and the use of double-shackles (at
the forward and rear leaf spring mounting points at the chassis) are not
permitted, unless factory-equipped.
3.9.4 Coil-springs and related suspension linkage may be modified or eliminated
and replaced with any coil-springs and linkage, and may be installed in any
location and orientation, with the following limitations and exceptions: Coilsprings must be connected directly to the axle assembly and chassis and shall
not be mounted in any way so as to yield any type of mechanical advantage,
unless factory-equipped. Coil- springs shall not be replaced with any type of
coil-over shocks, unless factory- equipped (if so-equipped, factory coil-over
shocks may be replaced with aftermarket coil-over shocks).
3.9.5 Secondary suspension is not permitted, unless factory-equipped (secondary
suspension is considered to be any means or method of supporting any
portion of a vehicle's weight and/or affecting the primary spring-rate at any
time). As such, springs of all types and airbags, are not permitted.
3.9.6 Air/nitrogen-charged hydraulic bump stops, compressible bump stops made
of rubber, foam, or other similar materials are permitted, with the following
limitations and exceptions: Bump stops shall not have any action whatsoever
on any aspect of a vehicle's performance outside of the last 2" (50mm) of
vertical wheel-travel (on compression).
3.9.7 Shock absorbers of any make/model/type are permitted and may be installed
in any location and orientation, with the following limitations and exceptions:
1) Only one shock absorber is permitted per wheel/tire (not including spare
tires). Shock absorbers shall not be larger than 2.65" (67mm) in diameter
(outer diameter of shock-body) and shall not be capable of any more than
14" (355.6mm) stroke.
2) Position-sensitive shocks (including bypass shocks of all types) are not
permitted.
3) Shock absorbers must be connected directly to the axle assembly and chassis
and shall not be mounted in any way so as to yield any type of mechanical
advantage, unless factory-equipped (mounting shock absorbers off-vertical is
permitted and shall not be considered a mechanical advantage).
3.9.8 Manual suspension controls (e.g. forced hydraulics) are not permitted.
3.10 WHEELS & TIRES
3.10.1 The intent of the tire rule for the stock class is to restrict tire use to only
standard production models designed, sold, and advertised for use on
highway vehicles. Therefore all tires used in competition shall be readily
available to the public from any local distributor. Tires with special
construction, compounds, etc. created for the sole purpose of competition
will not be allowed.
3.10.2 Tires must be DOT-approved, with a maximum outside diameter of 35" (or
equivalent), as specified on the tire’s sidewall by the original manufacturer,
unless otherwise stated in supplementary regulations covering special events
(e.g. Colorado hill climb events).
OP