UK Karting - Notice Board (Combined Forum) : Re: Jnr Blue restrictors

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Re: Jnr Blue restrictors
Posted by 'SimonS' on 15 Nov 2008 @ 08:55

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SimonSJoined: December 2004
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"although it carries an increased weight seems to have an advantage over the smaller restrictors (ie. Red & below) as it provides a better engine power to weight performance. "

On the other hand, you would expect the figures to show an increased power to weight advantage in the low to mid power range, because acceleration and deceleration are not linear forces, there's a square in there. You require four times the power to accelerate double the mass for any given rate of acceleration.

In addition, the handicap is designed to even out over a lap, not on the outrun from a single corner. You also require 4 times the braking force to decelerate double the mass, which normally means the heavier weight has to brake earlier since the braking efficiency doesn't double with the increase in weight.

This doesn't mean that the restrictor doesn't have an advantage, just that you cannot measure it easily on simple figures or a simple test.

Sometimes a driver is more attuned to the requirements of one restrictor than another. (eg: if you always brake just too early on a red restrictor, then you may be braking at just the right place for the extra weight on a grey restrictor, which makes it look as if there is an advantage)

However, if you can show that it makes a consistent difference, Ron has a good reputation for trying to make the system more even. (Cue complaints about 'changing the restrictors every year') although I think the 2009 sizes/ weights have been set.

Message Thread:

Jnr Blue restrictors by 'YAN' (14 Nov 2008 @ 20:30)

Re: Jnr Blue restrictors by 'Inter61' (14 Nov 2008 @ 20:57)

Re: Jnr Blue restrictors by 'Scott57' (15 Nov 2008 @ 7:48)

Re: Jnr Blue restrictors by 'SimonS' << You are here!

Re: Jnr Blue restrictors by 'Jole' (15 Nov 2008 @ 14:53)

Re: Jnr Blue restrictors by 'Promax' (16 Nov 2008 @ 12:10)

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