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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
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[QUOTE="rmc_olderthandirt, post: 1194201, member: 68872"] It isn't necessary to test every bike. The generic two stroke engine is horrible at emissions. It is well understood, and is not being debated. Four strokes, in general, are much better but can still produce unacceptable amounts of emissions unless they are adjusted properly. Unfortunately, the best adjustments for performance are NOT the best adjustments for emissions so it is pointless to test a race bike, it isn't going to pass. You ban a technology because it is known to create unacceptable amounts of emissions. There is a standard. I am sure that if the bike manufacturers built a dirt bike with the same technology that they could get it approved for use. The question is would anyone buy it? The direct injection two cycle outboards have not done very well as far as reliability and customer satisfaction. Applying that technology to a dirt bike would eliminate most of the reasons that dirt bikes want two strokes: 1) Two strokes are simple, easy to maintain: NOT with direct injection! 2) Two strokes are lightweight: I don't think that you are going to run a direct injection fuel stroke off a magneto ignition system. The fuel pump requirements and electronic fuel injection systems are going to require a battery. Your weight savings will get decimated pretty quickly when you add a battery. 3) Low maintenance: You have just added fuel pumps, injectors, electronics, etc. The classic two stroke outboard has already been banned for sale in the US. Two stroke PWCs (Jetskis) are not only banned for new sales in many areas but there is a growing number of lakes where even the existing ones are not allowed to operate. Two strokes for most lawn/garden equipment has been banned, and what's left is fighting a losing battle. In California, motorcycles that don't meet the EPA requirements are being significantly penalized by restricting when and where they can ride. There are no two strokes that are eligible for the "green sticker" and even some four strokes don't qualify (The Yamaha YZ-450F, as an example). The standards are set and the writing is on the wall. I suspect that once any of the major bike manufacturers stops making two strokes that the loss of lobbying power will create a domino effect. Rod [/QUOTE]
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Which ocean is California closest to?
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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
have you heard
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