Quote:
| Originally Posted by ChrisBushell Very well put mate!
If any form of machining to the crankshaft was to be allowed, so as to allow the entrant to "balance" the reciprocating mass, then that opens the way for people to remove "excess" weight from the crankshaft "during" the balancing process. I would be interested in hearing suggestions as to how the rules could be written to ensure that this option was controlled effectively.
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Chris
I have seen many sets of (car) racing regs during my career as a Club racer using standard production engines. This included writing some whilst being involved in running a championship for single seater cars. We have also had to deal with these types of issues.
Our definition of standard parts is those supplied by the original manufacturer for that type and model etc, with the stipulation that no material should be removed from or added to it. Evidence of machining or polishing would make the item illegal.
If "balancing" is to be allowed, then the regs state where the material can be removed from the parts. Most manufacturers provide bosses or other areas to be machined to allow balancing of rotating parts.
Although it is often argued that this means stripping is needed to police the regulations, in practice this isn't neccessarily the case. This type of regulation makes it quite clear what is allowed, so all competitors know where the line is, and stick to it. It is ambiguity that encourages people to devise rationales for border line mods, convincing themselves they are legal. Wholesale stripping isnt appropriate at our level, so cars are usually only subject to such a detailed check if other evidence indicated there may be a problem. The paddock is usually pretty good at smelling rats!
This approach may or may not be appropriate for DD, but I thought you might find it interesting.
PS I was riding with you on New Years Day on my wifes 750ss ie!