Tech Updates 7/3/17

EFFECTIVE IMMEDIATELY

(JULY 3, 2017)

CONCORD, NC - Beginning with the next Manufactures Cup event at New Castle Motorsports Park, we will be including the exhaust header in our engine sealing process for Mini Swift, all the Yamaha classes and Iame Junior.

For the Iame Junior and the Yamaha classes, the wire will pass thru one head nut and thru the support strap on the exhaust header or can pipe.

For the MiniSwift, the wire will past thru one head nut and one of the header nuts.

All other classes require the wire to pass thru two head nuts.

Please insure you have all your hardware drilled with a 3/32" hole in advance.

TECH UPDATES 6/29/17

EFFECTIVE IMMEDIATELY

(JUNE 29TH, 2017)

CONCORD, NC - All two cycle karts competing in the Man-Cup and the Road Race series will be required to utilize an auxiliary carb return spring. This rule does not apply to karts using a slide carb with an internal compression type return spring --- several acceptable types are shown below -- other types may be used if inspected and approved by the WKA tech officials.

This rule will be in effect immediately and all karts must be in compliance before entering the track at upcoming events.  See pictures below for details.

Tech Updates 3/1/17

TECH UPDATES

212.1.4       Add:  Ties to be broken by qualifying. 

212.1.4.1    When only one heat race is being run, the line-up will be based on points scored in qualifying and the heat race (0,2,3,4 etc) -- ties to be broken by qualifying.

214.3 and 214.4    Delete 5.30 to 1 minimum gear ratio.

601.9    Blowdown checking procedure -- # 6 -- effective 4/17/2017 --  the value must be between 0.390" and 0.420"

Figure 609 -- TAG Spec's -- page 108-- All IAME Leopard and X30 Max Bore Spec's -- change from 54.30 to 54.35 effective 4/17/2017.

402.1   Add: Maximum width on any tire and wheel assembly -- 10.375"

609.9.2   First cone length of 10.375" --  change to 7.5"

TECH UPDATES 1/9/17

Tech Update

507          The inspection procedure requires a piece of 1/16" diameter soldier (50% lead / 50% tin) and a precision measuring tool.

704.38     Add: No re-sleeving allowed.

760.5       Add: this does not apply to Briggs Animal block.

705.38     Add: No-re-sleeving allowed

TECH UPDATES 12/5/16

TECH UPDATES                                                   (Dec. 5 2016)

214.9    LO206/CIK Senior     

Max overall wheel width (mounted assembly as raced)

 front --5.625"   ---   rear -- 8.5"

362.18    CIK/LO206 SPRINT (local option)

Max overall wheel width (mounted assembly as raced)

 front --5.625"   ---   rear -- 8.5"

312.12       X30   (final 1 + final 2)

Driver Req. -- age 15 + older. Road race class 2 license.

312.5    YAMAHA SENIOR    (final 1 + final 2)

214.9    LO206/CIK SENIOR

Clutch/Chain: any rim centrifugal stamped steel shoe type clutch with a maximum of 9 springs and 6 shoes is allowed. No alteration to clutch allowed except springs. Clutch coolers not allowed.   Also see 708.24.  -- 219 or #35 chain only

214.9    LO206/CIK SENIOR

Chassis:  Man-Cup sprint chassis rules per Section 200.

FUEL:  Spec gasoline per race entree blank

363   ROAD RACING SERIES FORMAT AND SPECIAL RULES

Covers laydown and sprint divisions (2 + 4 cycle)

312.7    100cc CONTROLLED (final 1 + final 2)

Exhaust: Any approved WKA pipe.  All engines--1.75" header

362.1    CADET SPORTSMAN LO206 (local option)

Engine: Briggs and Stratton LO206 engine with green slide #555740 (0.490") with locking cap

362.2   JUNIOR LO206 (local option)

Engine: Briggs and Stratton LO206 engine with yellow slide #555741 (0.570")  with locking cap

214.9    LO206 SENIOR

Minimum weight: 365#

902.4       WHEELBASE      Minimum--29" --- Maximum--35.5"

904.4      CHAIN--  #35

312.2      Engine -- delete

601.6    WALBRO WA55B SPORTSMAN CARBURETOR

# 3 -- throttle shaft hole in carb body -- 0.189" NO-GO

603.4.1     KPV SPORTSMAN CARURETOR

at end of paragraph add:  also see 601.6 for additional specifications

252.2    Strike out sentence-- "bead locks not allowed on gold cup chassis"

252.2.2    MAX WHEEL WIDTHS

450-5=  7"     ----      600-5=  8.25"      ----      710-5=  9.75"

263.2 -- 263.3 -- 263.4

BODYWORK -- no steering column fairing allowed with Gold-Cup bodywork---- CIK steering column fairing allowed only with CIK front nose.

801.2.1        delete in total

801.2.2       delete Gold-Cup grand national point bonus---
A competitor will receive 35 bonus points for racing in their third event and an additional 15 bonus points for racing in all four events.  Three events may consist of any three of the four national races.

609.10    X30 clutch--minimum friction hub diameter = 83mm (3.268") -- maximum drum inside diameter = 85.2mm (3.354")