LMP Rules

Clearance and widths
The following are required:
1. .063-inch minimum clearance is required under the center section, rear of the side pans, and spur gear. Subsequent to tech inspection, Track Owner/Race Director has discretion to require that any car be repaired (e.g., due to crash damage, worn tires) to correct clearance issue that could cause damage to the track surface and/or braid.
2. 3.25-inch maximum rear axle track width
3. 3.25-inch maximum chassis width, including widest part of the body

Spur gears
Metal spur gears are not allowed.


LMP Class Rules

LMP Motor Rules.
1. Allowed motors are Hawk 7 and ProSlot 4002FK,Mid America Eagle (MID 605) Motors must remain sealed
2. Allowed modifications to the ProSlot 4002FK are
3. Springs and brushes may be changed. Springs must be of three coil type from a USRA approved manufacturer.
4. May solder can bushing and glue end bell busing if you wish.
5. Axle-facing side of the can may be notched to allow for axle clearance. Notch may be ground only in the can and may not continue into the magnet. 
6. Armature shaft may be shortened to add clearance between pinion gear and left rear tire.
7. Otherwise, the motor may not be modified in any way; e.g., the manufacturer’s endbell retention tabs must remain intact, and the can’s original measurements must be maintained. New / Clarification It has been observed that some racers have made a small notch with a Dremel cutting tool to indicate each race that has been run by a given motor. While this is a technical violation of the no motor modifications rule, it will not be grounds for disallowing the motor; however, excessive grinding will be viewed as an attempt to relieve weight and will not be allowed. Obviously, this is purely subjective and the judgment of the Tech Inspector will be final; therefore, it is strongly suggested that such motors be presented well in advance of the opening of tech to avoid last-minute motor changes.

LMP Chassis Rules.

Allowable chassis
Any commercially available flexi chassis may be used, if you can buy it from your local shop its legal.
Parts substitutions
The following substitutions are allowable:
• A chassis’ original pan(s) may be replaced with alternate replacement pan(s) from the same manufacturer.
• If equipped a bite bar, it may be replaced with racer-made part of alternate material and size.
• JK bite bars for the C43 chassis may be used on any chassis they will fit on.

Pans and center sections
• Single pan on a two-piece chassis may not be cut/split to emulate a three-piece-chassis.
• If pan(s) is connected to the center section by a bite bar (e.g., JK), bite bar may be soldered to the pan(s) and/or center section. 
• For JK chassis, bite bar location may not be changed; it must pass through the original uprights of the pans and center section.
• If a single pan (two-piece chassis) is connected to the center section by an upright tab (e.g., Champion), racer is free to add washer(s) for tuning and to complete the connection as desired (e.g., using cotter pin or piano wire, or soldering pan to the upright).
• Pin tubes may be added for body mounting
• Pin tubes, if added, must be fixed solidly to the pan (no floppy mounts).
• On JK chassis, a notch may be cut into either or both of the outboard upright tabs of the pans to facilitate insertion of the bite bar without stressing the pan or center section. The notch may only be large enough to pass the bite bar; excessive grinding will be viewed as an attempt to relieve weight and will not be allowed. As with motor notching (above), this is purely subjective and the judgment of the Tech Inspector will be final.

Additions, bracing, chassis strength
• Bracing for rear axle uprights may be added to prevent bending from side impact; design of this bracing is at the racer’s/builder’s discretion.
• Bracing may be added along sides of the center section in the motor box area to prevent bending of the chassis from rear impact; forward reach of this bracing may not extend beyond front-most edge of the motor.

Front axle(s) and wheels
• Front wheels are optional, if run, follow the rules below. If front wheels are not used you must use decals as listed under the body rules.
• Wheels must be solid and mounted on an axle, with foam or O-ring tires; minimum ½ -inch diameter. 
• Wheels must rotate, either around or with the axle.
• Upright holes may be enlarged to set axle height. It is not required that the axle be soldered to the upright; the axle may float/turn within the holes. There is no requirement as to the shape of the enlarged hole (e.g., may be round from drill bit, oblong from Dremel grinder, etc.).
• Separate axles (that is, one per side) are allowable; axles may be soldered directly to uprights or held with keepers and allowed to float within the uprights’ holes.
• Any solid front axle(s) is allowed, with minimum diameter of .047-inch; no hollow axles.
• Front wheels must be mounted so as to contact the track surface either in the car’s static position or as the car is rocked side to side before grounding the chassis.

Rear axle and bushings
• Only 3/32-inch and 1/8-inch solid axles are allowed.
• No hollow axles.
• Oilites or bronze bushings are to be used in LMP
• Bushings may be soldered or glued in.

Other
• Tape and/or weight may be added for chassis tuning. 
• Other than addition of materials as noted above (for bracing and chassis strength, and tape or weight for chassis tuning), no other materials may be added to the chassis.
• If chassis is equipped with an upright motor mount (e.g., Champion, JK-21) for mounting by screws, the mount may be removed to facilitate soldering the can to the chassis. It is also permissible to solder the can to the upright mount.
• Chassis may not be otherwise cut or ground.

.LMP Body Specifications.

Approved Bodies
Any commercially available LMP body may be used, provided it is 3.25” wide or less(all Ralph Thorne extra wide bodies are banned) .
If you are unsure what an LMP body is ask your local shop or post on one of the forums.

General

• Body must be opaque on all sides and have clear front wheel wells. However, the requirement for clear front wheel wells is waived for bodies with sticker fronts. 
• Closed/coupe bodies must have clear windows. “Tinting” is allowable as long as the windows are clear.
• No air control may be added. Lexan strips may be affixed to the body to strengthen stress points, support the rear wing, or repair crash damage provided the strip(s) does not affect air control.
• Minimum 1/16-inch front bumper is expected, but note that this is a best-case “target;” bumper may be cut narrower than 1/16 to effect last-minute or during-the-race clearance issues. However, in such cases at least some of the original vertical surface must be clearly visible and the remaining vertical surface must extend across the entire original width of the bumper.
• There is no maximum body height. However, no materials may be added (e.g. Lexan strip) to raise body height beyond what was molded by the manufacturer.
• Where the same body offered by a manufacturer is available in multiple thicknesses, selection of the body thickness is at the racer’s/builder’s discretion.
• Body must cover entire chassis, including guide flag, when viewed from above.