March 25-27, 2011 USA TX Cresson * Lone Star Classic
Charity Rides, Biker Rallies, Bike Nights, Races
Written by Texas, USA
Friday, 04 February 2011 14:46
Lone Star Classic
March 25-27, 2011 in Cresson, Texas
Motorsport Ranch
9012 Performance Ct
Cresson, TX 76035-4360
(817) 512-3162
This event will host the second round of the 2011 AHRMA national roadracing season. This is going to be the first ever AHRMA round in Texas. All races will be run by AHRMA. All participating racers will need to have a current AHRMA membership to compete. AHRMA will offer a race school for this weekend, please contact them for more details. You will be able to use a current racing license from another recognized club such as CMRA, WERA, AMA, etc to register to race.
AHRMA CLASS STRUCTURE
500 Premier: 500cc four-stroke OHV and OHC, or 750cc sidevalve machines built before the end of 1968.
500 Grand Prix: 500 Premier bikes with the additional restrictions of 285 lbs. dry, stock stroke and gear boxes restricted to 4 speeds.
350 Grand Prix: 350cc four-stroke machines; 350cc air-cooled, single-cylinder, two-strokes with no more than five speeds; 250cc two-stroke water-cooled singles; 250cc twin-cylinder air-cooled two-strokes with no more than six speeds. Machines must have been built before Dec. 31, 1968.
250 Grand Prix: 250cc four-stroke machines; 250cc air-cooled, maximum five-speed, single-cylinder two-strokes; 175cc two-stroke water-cooled singles; 175cc air-cooled, twin-cylinder, two-stroke machines with no more than six speeds. Machines must have been built before Dec. 31, 1968.
200 Grand Prix: This class combines a variety of engine designs and displacements between 125cc and 250cc, based on an index of performance.
Formula 750: Works 750cc four-stroke machines, including accurate replicas of Formula 750 machines of the early 1970s. Also includes machines not eligible for Sportsman 750.
Formula 500: Two-stroke and certain four-stroke machines up to 500cc grouped on an index-of-performance basis, with a Dec. 31, 1972, cutoff.
Formula 250: Two-stroke air-cooled machines, including singes up to 360cc and twins up to 250cc, with a Dec. 31, 1972, cutoff.
Formula 125: Certain machines up to 125cc, with a Dec. 31, 1972, cutoff.
Formula Vintage: Open to machines from 500 Premier, F-750, Formula 500 and Sportsman 750.
BEARS®: Certain two-cylinder machines built up through 1968 and competing under Formula 750 specifications.
Class C: Intended for AMA "Class C" machines up to and including those manufactured December 31, 1951, as a ‘51 model. Class C Handshift is a championship class run together with but scored separately from Class C.
Pre-1940 Grand Prix: 1940 and earlier Grand Prix or modified street machines, including 500cc single-cylinder OHV and OHC and 750cc sidevalve machines.
Classic Sixties: A class for 1960 and earlier (or like model) Grand Prix/Clubman 500cc four-stroke OHV and OHC machines, or 750cc sidevalve, in basically standard form. Plus 350cc OHV and OHC. Classic Sixties 650 is open to British and European OHC 650cc machines of the period and the Harley-Davidson KH.
Sportsman: Four-stroke, maximum three-cylinder street bike-based machines, divided into 350cc, 500cc and 750cc classes. The cutoff is Dec. 31, 1972.
Novice Historic Production 1972 and earlier production street machines with the standard OEM frame, swingarm, forks and handlebar mounts. Engines use the original OEM bore and stroke.
Classes are
Lightweight (four-strokes up to 500cc, 250cc two-strokes and certain 350cc two-strokes)
Heavyweight (four-strokes up to 750cc and 350-500cc two-strokes).
Sidecar: 750cc four-stroke, twin-cylinder, or 500cc two-stroke, air-cooled, twin-cylinder powerplants. Rules available from the AHRMA national office.
Vintage Superbike. AHRMA's newest roadrace category includes three classes for motorcycles built up to the 1982 model year and originally manufactured as street machines. Motorcycles are to be as close to "production" appearance as possible.
Classes are
Heavyweight (unlimited displacement twins and pushrod triples, and displacement-limited fours and sixes),
Middleweight (unlimited displacement singles, with limited pushrod twins, OHC twins, pushrod triples and OHC fours)
Lightweight (singles, twins and multis using performance indexes for smaller bikes).
Sound of Singles®: Unlimited displacement four-strokes.
Motard Motocross, off-road, dual-sport and motard-specific four-stroke single-cylinder machines of unlimited displacement.
Sound of Singles®Two-Stroke: Two-stroke singles to 550cc.
Sound of Singles®2: Four-valve four-strokes to 510cc and two-valve four-strokes to 610cc.
Battle of Twins® (BOT)
Formula 3 Twins: Pushrod OHV twins to 1000cc, OHC 2- or 3-valve to 800cc and OHC liquid-cooled 4-valve to 650cc.
Formula 2 Twins: Pushrod OHV machines to 1250cc, liquid-cooled OHC to 750cc, air-cooled 2-valve to OHC to 1000cc and air-cooled 4-valve to 1000cc.
Formula 1 Twins: No displacement limits. Engine modifications are unlimited, except on water-cooled 4-valve twins over 900cc.
Open Two-Stroke: Air-cooled machines to 500cc, water-cooled motorcycles with tubular frame to 400cc and modern 250cc GP type machines.
Transalantic Challenge: Supersport rules apply with some exceptions to the Triumph Thruxton and Harley-Davidson XL883 and XL 1200 Sportster.
Sound of Thunder®
Unlimited displacement four-stroke singles; 4-valve demo twins to 1000cc, OHC twins to 1100cc and pushrod twins to 1350cc; three-cylinder machines to 1000cc; and twin-rotor rotary engines.
Along with two days of vintage motorcycle racing, there will be a bike show on the premises. The show will be open to anyone who would like to enter.
We encourage you to organize group meet ups and rides out to the track to enjoy classic machinery in competition.
There will be camping grounds and showers available, for a fee, to those who wish to stay at the track. Camping space will be limited to the first 250 people who sign up.
The track is located approx 27 miles from downtown Ft. Worth
Please email info@thelonestarclassic.comThis e-mail address is being protected from spambots, you need JavaScript enabled to view it for more info or visit
http://thelonestarclassic.com/index.htmlCindy Cowell 910-253-9738
If you have a comment or additional information about this motorcycle event, please post it below.
