Posts
2068
Joined
10/29/2006
Location
Fredericton
CA
Edited Date/Time
11/23/2014 6:51am
For the 2015 CMRC Rockstar Energy Drink MX Nationals, the following amended rules will apply to 250 two-stroke motorcycles in order to be eligible for competition:
1) The bike must remain in stock form from the intake manifold to the exhaust port, and all engine parts between those two points. All engine parts (ie. cylinder, cylinder head, piston, rings, rod, etc.) must be OEM for that year model.
2) Intake manifold is defined from the rubber boot clamps to the carburetor. No porting or headwork allowed.
3) There are no restrictions on pipes or mufflers other than the fact that they must meet the sound rules.
4) CMRC will be conducting random engine checks throughout the series. CMRC will have a cylinder, cylinder head and piston from each manufacturer for comparison.
5) Any bikes found to be modified will be excluded from the results of the day’s competition.
6) Additionally, a rider may not switch from a two-stroke to a four-stroke or visa-versa. The type of machine on which a rider begins the series is to be used to the completion (ie. Start on a two-stroke, finish on a two-stroke).
The above rules apply to the National series only. For regional and provincial races, the existing rule will not be modified.
- Mark Stallybrass - President, CMRC Rockstar Energy Canada MX Nationals
1) The bike must remain in stock form from the intake manifold to the exhaust port, and all engine parts between those two points. All engine parts (ie. cylinder, cylinder head, piston, rings, rod, etc.) must be OEM for that year model.
2) Intake manifold is defined from the rubber boot clamps to the carburetor. No porting or headwork allowed.
3) There are no restrictions on pipes or mufflers other than the fact that they must meet the sound rules.
4) CMRC will be conducting random engine checks throughout the series. CMRC will have a cylinder, cylinder head and piston from each manufacturer for comparison.
5) Any bikes found to be modified will be excluded from the results of the day’s competition.
6) Additionally, a rider may not switch from a two-stroke to a four-stroke or visa-versa. The type of machine on which a rider begins the series is to be used to the completion (ie. Start on a two-stroke, finish on a two-stroke).
The above rules apply to the National series only. For regional and provincial races, the existing rule will not be modified.
- Mark Stallybrass - President, CMRC Rockstar Energy Canada MX Nationals
Once again, mx sports..... HERE YOU GO...4 strokes still have a huge advantage and stops the "holeshot machine" theory, since they will be even or underpowered
A stock 250 2 stroke still has more HP than a mod 250F so i dont see a problem
This is pulled from Facebook where i saw Mark Stallybrass explaining the rules:
there are some manufacturers and teams that don't want four-strokes racing against two-strokes at all at the Nationals. I'm a big proponent of two-strokes and didn't want to see them gone. We had to make concessions to even out the advantages of two-strokes. The engine restrictions are exactly what is being done in Australia for their National series. It took a lot of investigating, research and negotiation to come up with the rule.
Two-strokes have an advantage in sand and a disadvantage on hard pack. We're trying to even the field, especially at the front of the pack. Plus, factory riders are the only ones that can choose, because they have a trailer full of bikes. "Finish what you started makes it fair for privateers."
The Shop
The sport is better and more interesting with two strokes in it.
All the great sports have comparisons between vehicles or people which make for interest.
Imagine if every basket-baller was the exact same speed and height...
F1 had years where the cars were so even there was no passing.
It's interesting watching a two stroke pull a start, the four strokes bring them in in the corners etc
I've suggested to the powers that be here more than a few times that I think there are enough smart people around to be able to figure out a formula that works to provide parity between dissimilar engine formulas.
But I also think the biggest tragedy in the whole 2 vs. 4 deal is the loss of 125s. I'd love to figure out a way to make them viable again at the national level.
Pros doubling up classes on a National day? Don't count on it.
if they need some cash and experience they might.....the point is give em the option, make it 10 minutes, its just a suggestion,
As for the rules, it's obvious that someone with some weight and no access to a 2-stroke threw a fit. Especially considering a 2-stroke mounted rider cleaned up. It's sad that it comes to that, but they only have themselves to blame for using the rules as a loophole in 99-02 then getting mad when someone else has a bike they don't make anymore. Kinda hypocritical if you ask me. But at the end of the day, if it keeps the option available it's still a win in my book.
How cool would it be to see the top Loretta Lynn kids on 125's at Red Bud, Millville, and Indiana? Have a little 3 race Midwest shootout. That would be super fun to watch.
And if 2-strokes weren't handicapped, all of the manufacturers pulled their heads out of the sand and started building them again, the 4-strokes would fade off into obscurity where they belong, and maybe the sport could start to gain momentum again.
Basically just flash back to 1997 before 4-strokes came along and made competitive racing unaffordable to so many.
It'll probably never happen, but that's the best case scenario in my head.
I don't hate 4-strokes, but I do think that they are a major contributing factor to the decline of the sport. A privateer didn't need to have a $25,000+ race bike with 1-race complete engine rebuild intervals and a small team of technicians to be competitive in the either class before 4-strokes came along.
Pit Row
riiiiiiiight.
and we're talking KTM 250 2 stroke as well. any other brand would be even more handicapped. So like an 06 rm250 against a 7k+ mod engine. thats just nice.
I would LOVE to see the sport move to 200-250four stroke Vs 250 two strokes is premier class
And 125 replace 250effs as lites...
Lower costs, better racing, and no more 60hp plus bikes in SX...
We all used to say 250 two strokes were a big step back in the day. They're considered slow now. And bones break as easily as always.
I think the rule is fine. The Aussies did it, right? I also agree with the people who mentioned the 125. Almost everyone wants it back.
" Our new 250 4 strokes can't compete with the older 250 strokes.............but God damn it they are better! "
" WAHHH!!.....We'll take our new 4 strokes and just go home! "
So much bullshit behind all of this if you read into it deep enough.
If I had two kids....one was named 4 stroke....the other one was named 2 stroke......I'd slap the shit out of the 4 stroke kid every day for being a whiny bitch!
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