Rules, tuning and model history

Ask about a rule, a class or a model

Tell us the class, the rulebook or the machine you are asking about, and we answer with the section or document the answer comes from. Where nobody has read it, the answer says so.

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What you get back

• What the rulebook says for your class, quoting the section it comes from.
• Where two sanctioning bodies disagree, both readings, with neither stored as the answer.
• For a tuning or model question, the document behind the answer.
• Or that we do not know. That is a real answer here and you will get it rather than a guess.

Nothing is sold from this site. To ask what a part costs or whether it fits, use the form on that part's page in the parts catalogue, which carries the part and its reference with your message.

Your question

Tell us the class you race, the rulebook or the machine, if any of those apply. Anything you leave out we will just ask about in the reply.

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What do you need to know?

We use your name and email to answer you and nothing else. No mailing list, no cookies, no tracking. What we hold, and how to have it deleted.

Send enquiry

Asking about: General enquiry (general-enquiry). We reply by email. That code is our own reference for this item, not a supplier part number.