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USD Rule change proposal

Posted: Fri Apr 22, 2016 4:59 pm
by gordon
Guys,

Following is the current basic USD Rule definition:

Where a class stipulates the USD rule, the car must not be able to magnetically adhere to a standard Scalextric Sport track piece in an upside-down position. Magnet stacking is allowed. Any weight added to the car must be positioned rearward of the front axle.

While this has helped make the classes requiring the rule a bit more competitive, we still see two areas which can be improved:
  1. Cars with longer wheelbases have a potential advantage since any ballast added to the car can be placed further forward than cars with shorter wheelbases, improving the fulcrum effect, thus allowing stronger magnets.
  2. Largely because of item 1 above, lap times are still very fast, something that I would like to see change.
The following change which should help address both points has been suggested and discussed (compare the red text above and below):

Where a class stipulates the USD rule, the car must not be able to magnetically adhere to a standard Scalextric Sport track piece in an upside-down position. Magnet stacking is allowed. Any weight added to the car must be positioned within 2.5" of the rear axle.

Let's hear your thoughts in the comments below.

Gordon

Re: USD Rule change proposal

Posted: Sat Apr 23, 2016 10:35 am
by RameshB
I will agree , thanks for always keeping racing fair and competitive.

Re: USD Rule change proposal

Posted: Wed May 04, 2016 3:40 pm
by gordon
Please note that this rule amendment proposal has been implemented and this is now reflected in our class regulations.

Re: USD Rule change proposal

Posted: Wed May 04, 2016 10:46 pm
by steveaca
I think that this is a good move. It means however, that some significant re-engineering may be necessary on some cars due to space limitations for mounting of weight.