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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Illegal modification: 50cc class
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[QUOTE="James980, post: 28272, member: 16990"] The impetus for the original question was that the only differences between the Polini Works and Standard models are that the Works has adjustable damping on the rear shock, a larger carb and neater graphics. Oh yeah, and it costs $1,000 more. If legal, I thought one of my options might be to get the Standard model and swap in the larger carb. But I guess the answer is "no," especially since my district MX director moderates this forum (doh!). I have the AMA rules from the March issue and off the Web site. If you look on page 48 of the list of things that can be changed in the stock class, the carb is not mentioned (although the jetting is). Also, at the bottom of page 47, the rules say "Effective 2001, newly approved machines are required to have carburetors that meet the specifications of the minicycle class, i.e., Class 1 - 14mm, Class 2 - 19mm, Class 3 - 12mm." Then, on page 17 for the youth rules, the classes are broken down into 1, 2 and 3 with other criteria (3 obviously is for PWs while 1 and 2 seem to be for the "racing" 50s, i.e., Cobras, LEMs, Polinis, etc.), but with the same carb size restrictions. Why, then, does it say the carb sizes are effective in 2001 in other sections of the rule book if the same sizes are listed in the criteria valid for 2000? I'm sure I'm missing something obvious. Another question: Is it typical for Districts to run the minicycle classes as broken down above? Knowing this will definitely help in selecting junior's next bike. I'm specifically interested in D17. Thanks, James [/QUOTE]
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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Illegal modification: 50cc class
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