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USLMRA Races / Re: 2019 USLMRA Rule Revision
« Last post by evansop on Yesterday at 01:51:44 PM »
2019 USLMRA Rule Book Link:
Mower Engines & Parts / Re: briggs 12hp
« Last post by BIG AL 202 on Yesterday at 10:59:00 AM »
Flathead or OHV?
Briggs OHV & Vanguard / Re: Head gasket
« Last post by crazycraftsman on January 16, 2019, 10:25:44 PM »
Depending on how much valve to piston clearance you have. Using a cheeta cam or something less then 500 lift you could take off .045-.050 tho off more easy. Just puddy the piston when done to double check valve clearances. Wouldn’t go less than .040 to piston.
Mower Engines & Parts / briggs 12hp
« Last post by Tantan on January 16, 2019, 09:14:32 PM »
briggs 28ci 12hp stock except dual valve spring, billet dog bone an governor taken out. has no flywheel, carb or exhaust. have 2 coils an shroud no dents. 200 plus shipping or trade for cub cadet pulling parts
Briggs Flathead / Re: Adding power to opposed twin?
« Last post by Keneijia on January 16, 2019, 01:00:21 AM »
This article is very good. I like to read a lot.
Trannys / Axles / Wheels / Re: Parts for Sale
« Last post by cable1981 on January 15, 2019, 10:25:15 AM »
One compete axle set up and one transmission along with an assortment of sprockets and gears is what I have left
Trannys / Axles / Wheels / Re: Parts for Sale
« Last post by bigt on January 14, 2019, 09:23:19 AM »
any of this still available
Trannys / Axles / Wheels / Re: Parts for Sale
« Last post by cable1981 on January 12, 2019, 11:17:55 AM »
Pm sent
USLMRA Races / A Change In USLMRA Leadership: By Angeline Robinson
« Last post by mrmowitall on January 10, 2019, 04:38:20 PM »

A Change In USLMRA Leadership:

By Angeline Robinson
USLMRA Races / 2019 USLMRA Rule Book & Revisions
« Last post by evansop on January 10, 2019, 09:05:57 AM »
As States last year we would not rewrite the 2019 Rule Book, but would add a revision to the 2018. Here is the revision.

Rule Changes/Clarifications of the USLMRA Rule book
As of 1 Jan 2019

As stated in the 2018 edition of the USLMRA Rule Book, every year beginning with this edition, a change document will be written noting changes, updates and reminders.

 For the 2019 racing season the following are items to be noted:

Rule reminders:

   No push pull steering in any class,

   Rear axles either have lock collars or a nut and bolt through the axle, no longer will C-clips be allowed,

   Front spindles will use either lock collars or castle nuts with cotter pins, lock nuts will no longer be sufficient.

   Age for J/P will start at 9 year old by the December 31 of the race year.

   The age of GPK is 11 years old and you must have at least 1 race year with more than 6 Races in the J/P class before moving up to the GPK Class. (Cleared by NKA)

   FXS or FXT Class, No front or rear wing are allowed. Only original mower fenders, hoods and Frames

   No Tubular frames allowed in FXS/FXT or any other class. Must use original frame, which can be reinforced.

   All Governed classes will remain on the track after feature and kept running for RPM checks and for JP and IMOW Tire Pressure check. Leaving the track or shutting the engine down will result in Disqualification

   Race numbers should be of a sharp contrasting color from their background, and should be visible from all four sides of the mower for grid line up and scoring purposes. Class letters, should be a minimum of 2” high, and be shown on both sides of the mower.

   Transponders should be mounted with the bottom pointing downward in order to for its signal to be picked up by the scoring cable across the start finish line.
Rule Changes:
   In all classes with exception of FXS & FXT only actual lawn mower seats will be used
   No pressurized  or electric fuel pumps are authorized
   Homemade kill switch devices will not be authorized for use
   Mowers with fuel, oil or brake fluid leaks will not pass tech or allowed to race
   :
Addition of G/P Twin with following guidelines: 
1) Engine must be originally manufactured for use in lawn mowing equipment and be completely stock with the exception of air filter, air cleaner or velocity stack. Must have stock air filter assembly and filter) Crankshaft must be in original orientation and clearance hole in the frame. Max RPM will not exceed 3650. Maximum Engine Size of 44ci.
2) Exhaust design is open, but must terminate away from driver and competitors, in a rearward and/or downward direction and present no apparent safety hazard.
3) Starter must be onboard, either electric or pull-rope.
4) Driveline may be modified from the engine pulley to the rear wheels, but must utilize a shift able lawnmower transmission or transaxle. No Veri-Drives, No centrifugal and or torque converter clutches.
5) Rear axle may use open differential, locked, “live” or solid axle. No single wheel drive.
6) Rear axle should use shaft locks, center bolts, or thru-bolts to secure the rear wheels.
7) All steering linkages must use ball-type or spherical threaded rod ends.
8) Front axle may be pinned, bolted or welded into stock position. No suspension, no shock absorbers. Axles must be a 1-piece beam design.
9) Front axle and steering may be reinforced, substituted or fabricated. In the case of racer-fabricated axles, these will be subject to the judgment of the Technical Inspector as to their apparent safety for racing.
Aluminum may not be used as the material for the one-piece axle
10) Rear axles must be either lock collars or a nut and bolt through the axle, no longer will C-clips be allowed, Front spindles will use either lock collars or castle nuts with cotter pins, lock nuts will no longer be sufficient. Cotter pins, E-rings and C-rings alone, bent nails, hitch pins; over-center pins and quick-release pins are not sufficient for wheel retention and are not approved.
11) Wheels must be the same size on each axle, of any origin, made of metal. No dual or tandem wheels.
12) DECK: Mowers must mount steel factory decks: The deck must be at least as wide as either running boards    or body edge whichever is wider. Decks may not extend any more than 2” beyond the tire sidewalls on each side.    Deck halves may be mounted to running boards. Decks must be secure.
13) SAE-rated trailer or lawnmower tires must be used. Kart tires are not authorized for this class.
14) Footholds must be discrete, and no more than 2” high, made of flat or “L” stock (no rod stock), and made such that the foot cannot become entangled in a roll over.
15) All parts should be of lawn mower origin with the exception of those specifically mentioned above or otherwise allowed under Sec. VII.
16) Hoods and body parts such as fenders may be upgraded from year to year only if the parts are from the mother company and any subsidiary company of said mother company.
17) External ignition Systems are not allowed.
18) Mower must have original stock flywheel.
19) Fenders may be discreetly moved and altered as noted in section VII, (BB).
20) Must use axle mounted brakes, no lawnmower transaxle or transmission mounted brakes.
With the lower mower count in the past several years it has been decided to merge the SP and CP classes in to one. With the extremely low mower count in the AP Class We will run AP one more year then Eliminate the class entirely in 2020.  However AP can be run at local and affiliate chapter races in year 2020
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