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Kurt, I spoke with Dave Larson today, and he said that availability is not going to be an issue. He said he has been watching the situation closely, and has determined that sticking with 99 is the best, and there won’t be a problem with supply. You can reach Dave at 866-489-3283 if you want to know more.
Curt, I am double checking, but don’t think there is anything to be changed in the 125 shifter class. It is the same rules that were for the Pro and/or Novice 125 class in 06. Was there something in particular that you were concerned about?
Thanks!!
angie
:loony:Curt, Thanks for your patience.
11.3 Spec 125 Shifter ?
11.3.1 Engine -The 1999 Honda CR125 ?kit motor? is generally accepted as the motor that the class is designed around.11.3.1.1 Cylinder
11.3.1.1.1 Cylinder must be unaltered 1999 CR125. No Modifications allowed to the cylinder height, port inlets, passages, or port windows of the OEM part as supplied from Honda. The cylinder must be as cast, no modifications, and no replating for any reason.
11.3.1.1.2 Cylinder Height Minimum is 3.311? min to 3.316? max, measured from the cylinder base to the head surface. Exhaust Valves (power valves) may be removed and plugged. Plug is a non-tech item and may be blended to match the exhaust port. All modifications to plug must be done prior to installation in cylinder and no grinding, polishing, or machining of any type may be done to the exhaust port.
11.3.1.1.3 Allowable Base Gasket Thickness: .010? – .030?
11.3.1.1.4 Exhaust Port – Cylinder top Minimum Distance: 1.145″ (29.08 mm)
11.3.1.1.5 Stroke: 2.149″ (54.59 mm) maximum
11.3.1.1.6 Bore: 2.129″ (54.10 mm) Maximum
11.3.1.2 Cylinder Head 1998-1999 CR125 Cylinder Head only. No modification to the OEM combustion chamber volume, shape, or dimensions. Combustion Chamber Profile must match the approved Shockwave 99 CR125 Cylinder Head Gage. Cylinder Head Gasket will be OEM only. Thickness =.010? + or -.001?. Cooling spigots may be replaced with a substitute in the original location. One spigot may be plugged for single water outlet.
11.3.1.3 Combustion Chamber Profile Using approved Shockwave 99 CR125 Cylinder Head Gage, inspect Parabola of Chamber Dome and Squish recess for apparent gaps greater the .005″ deep. Spark Plug sealing surface must be above spark plug stem of gage. The overall height is measured also. “The “go” portion of the stem of the profile gage should protrude above the spark plug sealing surface. The “No Go” portion of the stem should not.”
11.3.1.4 Piston to Cylinder Deck Minimum is .025″ (.63mm)
11.3.1.5 Crankcase Crankcase halves must be OEM.
Internal Crankcase modifications are not allowed with the following exception. Minor grinding of casting flash is allowed but only to eliminate the possibility of flash breaking off and damaging the motor. Kick Starter may be removed and plugged.11.3.1.5.1 Legacy Cases (fully modified cases) the use of legacy cases, i.e., may be utilized. The legacy cases may be used but must utilize the other stock components such as cylinder, head, ignition etc. A weight penalty may be imposed (10 pounds). The use of Legacy cases will be approved through 2007. If the legacy cases are replaced, the new stock cases must comply with the ?no internal or external modifications? rules.
11.3.1.6 Crankshaft Crankshaft must be OEM Honda CR125 any year. The crankshaft main bearing journals may be polished for slip fit of bearings. Precision alignment of crank is allowed. No material may be added or removed from Crank Wheels or Rod. No ?heavy metal? balancing allowed.
11.3.1.7 Connecting rod Connecting rod must be OEM with no lightening or polishing. Bearings, piston pin and cir-clips are non-tech items but must be of the original design, weight and size.
11.3.1.8 Piston 1999 OEM Flat Top design. Direct replacement only, OEM or aftermarket. This piston has a window and cannot be replaced with non-window piston.
11.3.1.9 Piston Ring Minimum Thickness: .038″ (.96 mm) as measured with calipers.
11.3.1.10 Bearings All crankshaft and rod bearings must be steel material.
11.3.1.11 Gaskets and seals Seals and gaskets are non-tech. Seals must be same size and diameter as OEM.
11.3.1.12 Clutch Stock OEM 1999 CR125 Clutch Basket and Pressure Plate must be used. No modifications allowed to any component. All 7 Clutch disks and 6 Clutch Plates must be installed. Aftermarket replacement clutch discs, plates, springs and hardware parts are allowed.
11.3.1.13 Transmission Transmission Bearings are to be steel material only.
Micro polishing of Gears is allowed.11.3.1.14 Five or six gears are allowed.
Gears are per the 1994-96 ratios as follows;
First – 14/33
Second – 15/28
Third – 19/29
Fourth – 21/27
Fifth – 23/26
Sixth – 24/2411.3.1.15 Water pump Water pump must be used as originally intended. No external or axle driven pumps allowed.
11.3.2 Induction System
11.3.2.1 Carburetor Approved carburetors are:
Keihin PWM, Keihin PWK, Mikuni TMX38
No modifications allowed. No polishing, grinding or machining allowed. Venturi Diameter may not exceed 38.6 mm in diameter measured from the first .450? of the Venturi diameter downstream from the slide. Round bore only Pump-around Carburetor Fuel Feed Systems are allowed.11.3.2.2 Fuel Pump Fuel Pump(s) must be driven by pulse pressure in the motor. No Electronic Fuel Pumps. Dual Fuel Pumps for Pump around Carburetors allowed. Fuel Pump must be a separate component from the Carburetor.
11.3.2.3 Carburetor Boot The stock 1999 CR125 30? Boot is recommended. The RS125 Straight Boot or the RS125 5? boots are allowed For Seat Clearance Purposes. However, the Stuffer Lobes of the Straight Boot and the 5? boot must be cut off flush with mounting surface and may not extend into Reed cage.
11.3.2.4 Reed cage and Reeds Reeds are open but must be single petal design. No dual stage reed petals Reed cage must be 1999 CR125 6-Petal Design. No material may be added or removed. Reed Stops must be 1999 CR125. Bending stops to fit into unaltered reed throat of crankcase is allowed. No removal of material from Reed Stops allowed.
11.3.2.5 Air Filters and Air Boxes Motor may be equipped with either Air Filter or Air box. Air Box Requirements may be imposed by Local Track regulations.
11.3.3 Exhaust System
11.3.3.1 Pipe/Expansion chamber The Pipe/Expansion chamber is restricted to the following:
RLV 6800 series also marked as (RLV-R2)
RLV-R4
RCE T3
The Pipe/Expansion chamber Maximum Circumference is 17-1/8? (440mm) measured at the drum/dwell section. Addition of exhaust gas temperature lead is legal, but hole must be plugged if exhaust temp lead is not used. External mounting brackets may be added.11.3.3.2 Silencer Silencer should be a minimum of 10″ long by 2-1/2″ in diameter. Tracks that have noise emission requirements shall provide any necessary supplemental rules for where noise abatement is required.
11.3.3.3 Exhaust Flange The exhaust flange is open but aftermarket headers may not alter the effective length of the
exhaust system by more than plus or minus .050?.11.3.4 Ignition
11.3.4.1 Coil Coil must be Stock 1999 Honda CR125 Coil.
11.3.4.2 CDI Capacitive Discharge Ignition (CDI) must be Stock 1999 Honda CR125. Denso Part Number 071000-1410 should be legible on Tag.
11.3.4.3 Flywheel and stator Flywheel and stator must be Stock 1999 Honda CR125 parts. No material may be removed from Flywheel. Flywheel Key may not be machined to offset timing. Stator may be mechanically advanced or retarded but must remain in a fixed position while running. Stator Plate may be slotted for adjustment.
11.3.4.4 Spark Plug and Ignition Wires The spark plug manufacturer is open, but the plug must be commercially available and measure 18.5mm long by pitch M14 x 1.25. Exception: The spark plug washer may be removed to facilitate the use of a cylinder head temperature sensor and the gap of the electrode may be adjusted. Ignition Wires are non-tech. No additional components may be electrically connected to the CDI or Coil. Only an inductive RPM sensor may be used
11.3.5 Ancillaries Studs, Bolts and washers are non-tech.
Brian,
I believe that the Mini Max will have the same choice as the other classes (either the MG Yellow or Mojo). Even though they are not mixed with other engines, there are some competitors that will not be going for the RMax points. Some will be doing CSC, where the MGs are spec, and then coming over to the The Track/IMI series and racing.Hope that helps,
AngieI did have the GJ races on the printout at the meeting. And all will be on the Calendar of Events when I get them added. I wasn’t leaving anyone out on purpose, but the thread is “Notes from the meeting”. The CRE schedule was not discussed.
Sorry, I didn’t mean to leave anyone out.
am
Richie,
Whatever you need! Where are you going to put the new warehouse? Right in the Denver Metro area?Angie
Here is one list for all…….
March 11……………….The Track
April 1…………………..The Track (RMax)
April 15…………………IMI Motorsports
April 29…………………IMI Motorsports
May 6 ???????? CSC Action Karting at Bandimere
May 20………………….The Track (RMax)
May 26 – 28?????????Greeley Grand Prix
June 10????????CSC Grand Junction Motor Speedway
June 24…………………IMI Motorsports (RMax)
July 15????????..CSC The Track at Centennial
July 22………………….The Track (RMax)
Aug 5……………………IMI Motorsports
August 12-18????.2007 Rotax Grand Nationals The Track at Centennial
Aug 26????????..CSC IMI Motorsports
Sept 9…………………..IMI Motorsports
Sept 16…………………The Track at Centennial
Sept 23???????.. CSC Grand Junction Motor Speedway
Oct 7…………………….IMI Motorsports
Oct 14…………………..The Track at CentennialGarrick. There are usually beacons around on a test/tune day. Sometimes too many. You should be able to get a used on pretty inexpensive, too. We use the magnetic pickup when possible… IMI, AK, GJ have them, and I think Jim said they were going to be installing strips at The Track, too.
hope that helps a little,
Angie
ps. sorry you will miss tonight. Everything will be relayed here, though…. maybe I will bring the camera, too!
http://www.thecoloradokarter.com/phpBB2/viewtopic.php?t=2962
that’s the first date on the IMI / The Track schedule at The Track.
The thread announcing the IMI/The Track series is still there…..
http://www.thecoloradokarter.com/phpBB2/viewtopic.php?t=2962
Yes the meeting is on. Saturday at Six. Please pass the word to your fellow karters (the mailing is a little late 😳 ) Remember PIZZA and BEVERAGES
see you there.
AngieChris,
The CSC will have the Novice 80 Shifter class (see http://www.coloradosprintchampionship.com ) and those classes should be able to run at the IMI and Track at Centennial races as well.angie
The Greeley race is definitely going to happen this Memorial Day weekend. I think I saw Drew post that they could use all the help they can get. Contact him or Rusty about how to help.
angie
Thanks Mikeala!
I didn’t mean to ignore you, apsdsmracer. 😳
the link is http://www.coloradosprintchampionship.com
