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This is the page for all of the latest updates to the current rules. Once a new rule set is published these will be removed and only any new items will appear.

The new rule set has been published.  Any new updates will be shown here.


Until March 1, 2015, the existing body rules in the 2015 IRRA® rulebook will be used: Section E, Body rule 1a, as written in all IRRA® classes.
Effective March 1, 2015, at all IRRA® Premier Races and on September 1, 2015, in all regions using the IRRA® rule set, the following body rules will apply:
Section E, Rule 1a (all classes but Stock Car): Bodies must meet the following dimensions: .008" minimum thickness on the nose of the body without any tape and .007" minimum thickness on the sides of the body, which may be accomplished using tape that must cover the entire side from wheel well to wheel well (on F1 bodies, from the front axle opening to the rear of the body side).
Stock Car section E, Rule 1a: Bodies must meet the following dimensions: .012" minimum thickness on the hood without any tape and .010" minimum thickness on the sides of the body, which may be accomplished using tape that must cover the entire side from wheel well to wheel well.
Regions may elect to enforce this change sooner than September 1, 2015.
Based on manufacturer input regarding the molding process, the IRRA® BoD believes that this is fair to all involved and still prohibits bodies made from .007" thick plastic stock as well as poorly-molded bodies.
The illustrations below indicate the approximate locations where measurements are to be taken.

(posted for the IRRA® BoD by Joe Neumeister)


The IRRA® BoD, with the assistance of the IRRA® Regional Directors, has revised the IRRA® Motor Protest Procedure and Exclusion Clause.
Both of these revised rules may be seen below and both of these rules will go into effect immediately.
These revised rules will be listed on the IRRA® website in the Rules Updates section and will be incorporated into the full IRRA® rulesets when the 2016 revisions are issued at the end of the year.
* * * * * * * * * *

The IRRA® Motor Protest Procedure
Any competitor who has raced in the same class may protest another competitor's motor. The protest MUST be filed with the race official in charge of event before the completion of the race ("main") in which the suspect motor is being raced/used. Anonymous protests will be allowed.

The fee for protesting a motor varies with the type of motor:

For Pro Slot motors (i.e. PS4002B, PS4002B-B ), the protest free is $70.
For all other motors (i.e. PS4002, PS4002FK, Topline or JK Falcon, Hawk Retro, TSR D3, Slick 7 Mini Brute), the protest fee is $30.

The protest fee MUST be paid in cash immediately at the end of the race. The race results will stand, to be amended later if the protested motor is found to be illegal.

At the conclusion of the race during which the protest was filed, the protested motor will be distinctively marked then photographed by the presiding race official. Immediately after the marked motor has finished racing in the class, the race official will impound the protested motor (less pinion, removed by or under official supervision) to be sent for teardown and examination by Bill Bugenis of Model Electromotive LLC, the IRRA® designated motor inspector. Note that this will be a destructive test procedure and will render the motor unusable.

The IRRA® BoD will be notified of the results of the motor teardown and inspection process and will release an official statement of findings within two weeks, including before and after photos, and a determination of legality. Should a motor be found to be illegal, the "Exclusion Clause" will apply.

If the motor is found to be legal, the motor's owner will receive the protest fee in full.
If the motor is found to be illegal, the protester will have his protest fee returned in full.
Note: This Motor Protest Procedure appears in the IRRA® Motor Rules.
* * * * * * * * * *
Exclusion Clause: Clear violation of the motor-tampering prohibition will result in the racer being excluded/suspended from future Premier Events for a period of one (1) year. Multiple infractions may result in permanent exclusion from IRRA® events. 
 1) Should a Premier Event host raceway knowingly allow an excluded racer to compete, IRRA® Premier Event status may be revoked.
 2) Regionally, it is strongly recommended that a suspended racer be excluded from series events for the length of the series.
Note: This Exclusion Clause appears in each set of class rules (i.e. Can-Am, F1, etc.)

Please note that there was a typo in th GTC Rules. The Quick Reference is correct defining the allowed motors. The Motor Section is incorrect and it should be the same as the Quick Reference.
Thisis the correct rule:

·         Motor Type = For GTC-FK: Topline or JK Falcon 7, JK Hawk Retro FK, TSR D3, Slick 7.
For GTC-Pro: All of the above and Pro Slot PS4002B, PS4002B-B.



The IRRA® Stock Car rule set is being amended to correct confusion about whether the guide flag is allowed to be visible at the front of an IRRA® legal Stock Car.

 The new wording is shown below.


 2a. All chassis parts, excluding the guide flag, must be covered by the unmodified body. No part of the chassis may be seen when looking down on the car. 

 Racers need to keep in mind that Stock Car guide lead is limited to a maximum of .750".

 Straightening the hoods without unsealing the motor is not considered modifying the PS FK Motor (only allowed in the Can-Am Plus Class).  This, in our opinion, is an adjustment to rectify something not correctly done by the manufacturer.

 No alterations to brush hardware may be done other then using a brush hood alignment tool to straighten the hoods so the positive and negative brush hoods are in line and orientated on the end bell, at zero degrees.

 No modification to the hood alignment assembly is allowed, either by trimming the tabs on the endbell, or opening the holes on the hardware.


Effective immediately in an effort to assist racers control expense and maintain a competitive equality, we will now allow racers to drill gears and lighten the aluminum hubs on PARMA gears.  The gear MUST retain its original configuration meaning the hub may not be removed or re-positioned and its original set-screw holes must be used.

We recognize that the newer and lighter gears now currently offered are more expensive so this allowance we believe will allow the use of less expensive gears and a gear that will, with minimum modification, be equally competitive.


As an addendum to the Motor Protest Rules announced in February 2015, effective immediately the Race Host, Race Director, and/or Tech Inspector, in addition to a fellow competitor, have the right to protest a competitor's motor at any time during the contested class.


Due to almost universal acceptance of the Hawk Retro motor (with barely more than 5% using any other motor at the recent R4/9), the closeness of racing recently seen in events utilizing IRRA® rules, the negative perceptions many have of rebuildable motors, and to eliminate any potential and/or future conflicts of interest, the IRRA® BoD has voted to simplify the Approved Motor List as follows:

Effective 4/1/16, at all IRRA® Premier races the only motors permitted in the Can-Am, GTC, Stock Car, Retro Anglewinder, and F1 classes will be: Hawk Retro, F7, and TSR.

Effective 4/1/16, at all IRRA® Premier races the only motor permitted in the Can-Am Plus class will be: Hawk Retro.

Effective 1/1/17, Hawk Retro, F7, and TSR will be the only motors permitted in the IRRA® rules for all classes, except in the Can-Am Plus class, which will be: Hawk Retro only.


As of today, the relevant sections of the IRRA® rules have been amended to read as shown below:
Chassis Materials:
The following materials are permitted for use in chassis construction:
Brass – sheet, rod, and tube. Brass is defined as generic "yellow brasscontaining copper and zinc, with minimal amounts of tin and lead, yellowish in color, non-plated, non-painted, non-coated (except for clear coating to prevent rust). Nickel/German "silver" alloys are not allowed.
Bronze – rod.
Steel – wire, pin tubing, and commercial guide tongues and guide tongue braces/doublers.
No other materials are allowed. Chassis parts, such as pans, brackets, guide tongues, etc., that are made using EDM, laser, or water-cutting techniques are allowed only if they are individual commercially-available components or components of chassis kits (i.e. these techniques may not be used in the private manufacture of one-off components that are not commercially-available). Materials such as printed circuit boards or composites such as carbon fiber are not allowed.

 This revised section will be incorporated into the 2017 IRRA® rules to be released in the coming months. 

 (Posted for the IRRA® Board by Mike Swiss)


 Please see the announcement in the Approved Bodies section.
At recent races, some racers have been cutting the VFC Charger & Daytona bodies front wheel openings excessively. On these specific bodies, there must be .210" minimum of the body side as measured from the hood to the top of the wheel opening. See picture below.




A question has been raised about the legality of the top chassis show below. The answer is that it is not legal per the IRRA chassis rule cited below:
"3i. Wire or tubing rails must connect the front and rear sections of the chassis. Using metal strip for this purpose is not permitted. A rail is defined as that which connects the motor bracket to the front of the chassis."
To be considered as main rails, whether center or outer rails, they must solidly connect the motor bracket and the front of the chassis (nosepiece). For example, center rails that are inserted into tubes in the nosepiece (but are not soldered into the tubes) do not qualify as main rails.

Main rails are there to support the frame. In the top picture below there are no main rails connecting the nosepiece to the motor bracket so the main rails cannot support the frame.
Note that main rails do not have to be one-piece, but multiple pieces of wire or brass tubing, or rod, must be connected with solder joint lengths of at least .250 inches to be considered permissible main rails.
This chassis does not have complete main rails connecting the motor bracket to the front of the chassis.
By adding additional wire with at least .250" long solder joints, this chassis does have a complete main rail structure.


Further clarification of the main rail issue...


The IRRA® wishes to show how to construct this new chassis so it complies with the long-standing IRRA® chassis rules, rather than have racers purchase something they believe is legal and later find out at tech it is not.
An additional restriction being imposed is that bracing or partial rails soldered atop brass plate to "complete" a main rail structure can be no smaller than .047" diameter.
Clarification of main rails on the original chassis design:
Here are illustrations showing a few ways how this new chassis kit can be built to comply with the IRRA® chassis rules for main rails.





 If a racer has a non-hand-out motor blow during qualifying the racer will be allowed to change the motor, re-tech, and the racer will be placed in the slowest qualifying spot. Any qualifying times already recorded will be thrown out.

 If a racer has a non-hand-out motor blow up during a warm-up period the racer will be allowed to change the motor under green and then will be re-teched.
Definition of motor blow-up: Motor comes to a complete stop and will not run or slows dramatically. The tech or race director will make the final decision regarding when this rule will be invoked.


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