BMC Autocross Information
The Buckeye Miata Club (BMC) hosts six to seven autocrosses each year. Our purpose is to allow Miata owners that are in the Buckeye Club to gain a better understanding of the capabilities of their cars. Our events are open to non members, and to all cars. Normally the grid is 75% Miatas with a real mixture of other cars, from cobras to older MG’s. We invite you to come and have fun with us!
We begin to set up the course at
We recommend that you wear tennis shoes and comfortable clothes; be prepared for any kind of weather and bring water to drink. You may want to bring some light gloves (Mechanix,
Don’t let the weather bother you. We try to run on our scheduled day because we pay rent for the lot regardless of the weather.
LOCATION:
We will run at the same place we ran last year.........the Ohio Historical Society along Interstate 71 near
REGISTRATION:
Registration starts at
We limit the field to a maximum of 40 drivers, with BMC members having first priority. Two driver cars are OK. Our limited field size ensures that we get at least 6 runs per event, usually more.
All drivers must have a valid driver’s license. You will be required to sign a waiver. Spectators are permitted, but are asked to stay behind the safety line. Passengers are permitted, but must be at least 12 years of age.
The entry fee is – members - $25 per driver; non members - $30 per driver.
Car class should be assigned at registration. Technical Inspection is intended to ensure your car is safe and is not used to enforce classification.
Stock class is for unmodified and very slightly modified street vehicles. The rules allow you to use certain aftermarket parts for wearable items. Replacement shocks (including adjustable shocks), any brand or style of brake pads, plugs/wires and air filters are 'free'. Any wheel can be used as long as it's the same diameter and width as available on any stock Miata. You may replace the front sway bar, add chassis braces that became available on later Miatas (such as a cockpit brace) and use a cat back exhaust. You may not use a chip, headers, or cut/replace/lower your suspension, springs or modify the spring perches.
Unlike SCCA rules, our stock class:
· Allows chassis braces and intake modifications such as a cold air/cone type air filters.
· Recognize engine size –side matters. We have separate classes as follows:
1. B Stock cars are factory turbo charged cars (the Mazdaspeed) or Miatas modified with an aftermarket blower (either a turbo or supercharger) that meet all the other stock requirements.
2. C Stock cars are cars with either the 1800 cc or 2000 cc engine.
3. E Stock cars are cars with the 1600 cc engine (1990 – 1993)
Street Prepared (CSP) uses the Stock rules, but allows additional modifications. This class is for street legal, normally aspirated Miatas from all model years that are modified beyond the stock class. Aftermarket clutches, computer chips, lowering springs, fender flares, any wheel size, camber plates, torque arms, headers, and underdrive pulleys are allowed. You may not use a supercharger or turbo in this class.
Modified (SM 2) applies to any street legal Miata with an aftermarket blower modified beyond the stock class.
Over laid the above classes are divisions based on:
· Tires – Any tire with a UTQG treadwear rating of under 140 will move you into the Race Tire class.
· Gender – We have class divisions for ladies and men.
Spec Miata is a Miata that is not street legal.
STX are all non Miatas. It doesn’t matter whether it is a Corvette, a Corvair or a Cord. We are first and foremost a Miata club. All others are just family cars.
TECHNICAL INSPECTION
We only have a few basic requirements, but they are very important. After registration, it’s time for tech inspection. While no special equipment is required (other than helmet), it’s up to you to ensure your car is in good working order. We try to make sure your car is autocross worthy. We'll check your seat belts, wheel bearings, brake fluid, battery tie downs, etc. It's just a basic safety check. We'll also check for loose items in the car that might interfere with your driving (such as floor mats, coffee cups, loose change, etc) so clean out your interior and trunk the night before and make sure these objects are out of your car prior to tech inspection. Please bring your helmet with you as we'll make sure your helmet meets the minimum rating. A roll bar is not required.
If Tech declares a car unsafe, it will not be able to run and the driver's entry fee will be refunded. Tech will put a sticker on your car and your helmet. It is the driver's responsibility to make sure they have their car ready. You must have both a helmet and car sticker. If you do not bring your helmet or you do not have numbers on your car, don’t worry. We have a few loaner helmets and some shoe polish to write your number on your windshield.
An acceptable helmet must met the current or two immediate preceding Snell Foundation standards (SA, K or M), or SFI standards 31.1A, 31.2A, 41.1A, or 41.2A.
WORK ASSIGNMENT
We need help setting up and marking the cones. This activity begins at
The course is different from event to event. There may or may not be a course map available. It is very important that you know where you are going so you should walk the course several times. This is one of the most important parts of your day. During this time, you develop your plan of attack and then adjust it after your first run. Look for the laydown or pointer cones that mark important points along the course. If you knock down a standing cone, you get a 2 second penalty. Pointers are free.
While it may look like a miniature road course most Stock class cars will never go over 35 mph and we rarely use 3rd gear (some drivers simply put it in 2nd at the start and then leave it there). There are plenty of experienced drivers who would be more than happy to walk along the course with you and answer questions - or ride with you during your runs if you would like.
Pay attention to the big cone after the finish line. This is a STOP CONE. If you hit it, or pass it without stopping, you will be DNF’ed. It is also the place to get your time.
DRIVERS MEETING
The course will be closed for walking at
AWARDS
We do award trophies at the end of the season - usually in early November. If you drove in at least three events in the same class you will get a trophy. However, once you see the trophies, you will understand that the reason we do this is to have fun!
USEFUL AUTOCROSS INFORMATION
| Solo II Novice Handbook- Excellent read to help you through your 1st season | |
| Miata performance driving tips | |
| General Autocross racing information | |
| General Autocross products and equipment (magnets, helmets, etc…) | http://www.soloperformance.com |
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