I posted this over on SMJ, so if you have seen this before I appologize:
While I have been locked away working over the last couple weeks I have been putting some thought towards the racing question that keeps coming up. The thing is I need to know who would be interested in running, and what kind of classes. I have been doing some research about safety and I think that we will have to be pretty limited in what can be run in a competitive manner inside. Track days are one thing but we all know how folks get when position has meaning. So what does this mean to our current arrangement? For a racing series I don't think it would be feasible to have 12 CRF150's running around banging into one another on the tight tracks we have available. We've been pretty lucky so far with regard to injuries and I would like to keep it that way. Safety will continue to be my number one focus, and if we can't keep it safe then I don't think we should do it.
My thoughts are to run a class or two of Honda and Yamaha 50cc based bikes. GLMMRS has been very successful running inside at Kart 2 Kart and uses the class definitions below. They also have an open class for 110's but I think that is too much money to keep the fun level up at this point; If we get the spec classes going then I would look at revisiting the faster bikes but for now I'd rather start small given our ridership. Let me know what you guys think. I know it would mean most of us having to build a bike for this, but in the end I think it will be worth it. The only changes I see to the rules are to allow china bikes that meet the rule specs and to run a spec tire, probably a TT91 or a Sava Slick (provided I can find a supplier that can support our anticipated volume at reasonable cost). I can't make this happen alone, so please let me know what your thoughts are. Maybe we could do some longer endurance sessions as well. Another goal for the mostly stock setups is cost. You should be able to build a competitive 50 for around 1500 if you bought everything new at full retail. Most of you probably have a 50 anyway......
The track day program will not change and you will be able to run your 125's and 150's as usual on track days, this is a separate deal and will be run in addition to the usual track day program. I really think this will be a lot of fun guys; I ran Dylan's TTR50 at Portsmouth and it was nice and smooth on the little bike. Please give it some thought.
Scott Jones
From the GLMMRS web site ( www.glmmrs.com/rulebook.asp )
Class Rules
Definition of a Fifty: 10" wheels, stock frame, 4 stroke motor. It's the 10" wheels that distinguish it.
** Note: With the Yamaha TTR50 that has recently come out, replace "Honda" with "Yamaha" and "CRF50" with "TTR50" where applicable (the same spec-rules apply).
Magic Racing 50cc Superstock: 50cc Honda CRF50s.
Below is a list of allowed modifications:
* 50cc motor (must be original-spec motor that came from the factory)
* Piston, head, cam and all other internal/external engine parts must remain stock and unmodified
* Milling/porting of head is the only engine modification allowed
* Stock flywheels may be lightened
* Timing advance modification allowed
* Stock Honda transmission required (no manual clutch, hand clutch, aftermarket clutches, 3-4 drive gear setups, or anything else besides stock are allowed). Heavy duty clutch springs are allowed
* Stock frame, swingarm, drum brakes, wheels and forks required (+1 fork legs are allowed)
* Big bar kits and taller seat allowed
* Aftermarket shock/spring allowed
* Aftermarket exhausts allowed
* Stock carburetor required - No internal or external modifications to the carburetor in such that no material may be added or removed from the carburetor - must remain unmodified and unaltered (jetting changes are allowed)
* Stock manifold must be used
* Stock airbox may be modified / aftermarket air filters may be used
* Carburetor choke modification allowed
* Hi-rev CDI boxes allowed
* Inner rotor/programmable ignition kits are not allowed
Honda East 88-Extreme: Honda CRF50s up to 88cc.
Below is a list of allowed modifications:
* Motor must be a Honda motor (must be original-spec motor that came from the factory)
* Aftermarket heads allowed - must be 2-valve
* Bottom end of motor must remain stock (No lightening, machining or altering of crank, or any other bottom end components)
* Primary gear must remain stock
* Stock flywheels may be lightened
* 26mm maximum-sized carburetor allowed - No internal or external modifications to the carburetor in such that no material may be added or removed from the carburetor - carb must remain unmodified and unaltered (jetting changes are allowed)
* Stock Honda transmission required (no manual clutch, hand clutch, aftermarket clutches, 3-4 drive gear setups, or anything else besides stock are allowed). Heavy duty clutch springs are allowed
* Stock frames, drum brakes and forks required (+1 fork legs are allowed)
* Aftermarket swingarm and shock/spring allowed
* Stock wheels required. Heavier billet wheels may be used. Anything lighter than stock is not allowed
* Hi-rev CDI boxes allowed
* Inner rotor/programmable ignition kits are not allowed
While I have been locked away working over the last couple weeks I have been putting some thought towards the racing question that keeps coming up. The thing is I need to know who would be interested in running, and what kind of classes. I have been doing some research about safety and I think that we will have to be pretty limited in what can be run in a competitive manner inside. Track days are one thing but we all know how folks get when position has meaning. So what does this mean to our current arrangement? For a racing series I don't think it would be feasible to have 12 CRF150's running around banging into one another on the tight tracks we have available. We've been pretty lucky so far with regard to injuries and I would like to keep it that way. Safety will continue to be my number one focus, and if we can't keep it safe then I don't think we should do it.
My thoughts are to run a class or two of Honda and Yamaha 50cc based bikes. GLMMRS has been very successful running inside at Kart 2 Kart and uses the class definitions below. They also have an open class for 110's but I think that is too much money to keep the fun level up at this point; If we get the spec classes going then I would look at revisiting the faster bikes but for now I'd rather start small given our ridership. Let me know what you guys think. I know it would mean most of us having to build a bike for this, but in the end I think it will be worth it. The only changes I see to the rules are to allow china bikes that meet the rule specs and to run a spec tire, probably a TT91 or a Sava Slick (provided I can find a supplier that can support our anticipated volume at reasonable cost). I can't make this happen alone, so please let me know what your thoughts are. Maybe we could do some longer endurance sessions as well. Another goal for the mostly stock setups is cost. You should be able to build a competitive 50 for around 1500 if you bought everything new at full retail. Most of you probably have a 50 anyway......
The track day program will not change and you will be able to run your 125's and 150's as usual on track days, this is a separate deal and will be run in addition to the usual track day program. I really think this will be a lot of fun guys; I ran Dylan's TTR50 at Portsmouth and it was nice and smooth on the little bike. Please give it some thought.
Scott Jones
From the GLMMRS web site ( www.glmmrs.com/rulebook.asp )
Class Rules
Definition of a Fifty: 10" wheels, stock frame, 4 stroke motor. It's the 10" wheels that distinguish it.
** Note: With the Yamaha TTR50 that has recently come out, replace "Honda" with "Yamaha" and "CRF50" with "TTR50" where applicable (the same spec-rules apply).
Magic Racing 50cc Superstock: 50cc Honda CRF50s.
Below is a list of allowed modifications:
* 50cc motor (must be original-spec motor that came from the factory)
* Piston, head, cam and all other internal/external engine parts must remain stock and unmodified
* Milling/porting of head is the only engine modification allowed
* Stock flywheels may be lightened
* Timing advance modification allowed
* Stock Honda transmission required (no manual clutch, hand clutch, aftermarket clutches, 3-4 drive gear setups, or anything else besides stock are allowed). Heavy duty clutch springs are allowed
* Stock frame, swingarm, drum brakes, wheels and forks required (+1 fork legs are allowed)
* Big bar kits and taller seat allowed
* Aftermarket shock/spring allowed
* Aftermarket exhausts allowed
* Stock carburetor required - No internal or external modifications to the carburetor in such that no material may be added or removed from the carburetor - must remain unmodified and unaltered (jetting changes are allowed)
* Stock manifold must be used
* Stock airbox may be modified / aftermarket air filters may be used
* Carburetor choke modification allowed
* Hi-rev CDI boxes allowed
* Inner rotor/programmable ignition kits are not allowed
Honda East 88-Extreme: Honda CRF50s up to 88cc.
Below is a list of allowed modifications:
* Motor must be a Honda motor (must be original-spec motor that came from the factory)
* Aftermarket heads allowed - must be 2-valve
* Bottom end of motor must remain stock (No lightening, machining or altering of crank, or any other bottom end components)
* Primary gear must remain stock
* Stock flywheels may be lightened
* 26mm maximum-sized carburetor allowed - No internal or external modifications to the carburetor in such that no material may be added or removed from the carburetor - carb must remain unmodified and unaltered (jetting changes are allowed)
* Stock Honda transmission required (no manual clutch, hand clutch, aftermarket clutches, 3-4 drive gear setups, or anything else besides stock are allowed). Heavy duty clutch springs are allowed
* Stock frames, drum brakes and forks required (+1 fork legs are allowed)
* Aftermarket swingarm and shock/spring allowed
* Stock wheels required. Heavier billet wheels may be used. Anything lighter than stock is not allowed
* Hi-rev CDI boxes allowed
* Inner rotor/programmable ignition kits are not allowed
( The rest sounds good wheel size tranny limitation and so on..No inner rotor thats all cool but we 95s with manuel clutches....
