UK Karting - Notice Board (4-Stroke Karting) : Re: didn't take long...

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Re: didn't take long...
Posted by 'itpro' on 24 May 2013 @ 16:55

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itproJoined: August 2001
Total Posts: 6
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Good point, D I Y.... I just can't do the calc as I have never known the way to calculate energy requirements to spin an object. Someone here must know.

As far as I can see, we need to know the weight of the kart and driver and the amount of 'lightening' and the likely rate of change of engine revs at the 'average' track. We can then calculate the energy required to :-

1) ('spin up' a standard flywheel + axle/wheel assembly) + the inertia of the kart + driver
2) ('spin up' a lightened flywheel + axle/wheel assembly) + the inertia of kart + driver

We then need to 'know' the power output of the engine so we can see if the energy 'saving' is significant.

We then can properly calculate the effect of the lightening on the Aixro.

We don't need to calculate the effect of accelerating the extra mass of the flywheel in the linear direction of travel as the karts will run to a minimum weight limit and thus, what's 'saved' by the forward motion of the flywheel will be 'spent' again moving that extra lead.

It doesn't look a tough calculation for someone with the 'maths' skills.

Ian

Message Thread:

didn't take long... by 'BrianP' (22 May 2013 @ 9:53)

Re: didn't take long... by 'itpro' (22 May 2013 @ 10:46)

Re: didn't take long... by 'kai' (22 May 2013 @ 11:45)

Re: didn't take long... by 'BrianP' (22 May 2013 @ 13:29)

Re: didn't take long... by 'itpro' (23 May 2013 @ 1:12)

Re: didn't take long... by 'BrianP' (23 May 2013 @ 7:39)

Re: didn't take long... by 'itpro' (23 May 2013 @ 11:17)

Re: didn't take long... P.S. by 'itpro' (23 May 2013 @ 11:18)

Re: didn't take long... P.S. by 'PaulMRotax' (23 May 2013 @ 12:35)

Re: didn't take long... by 'BrianP' (23 May 2013 @ 20:52)

Re: didn't take long... by 'itpro' (23 May 2013 @ 22:31)

Re: didn't take long... by 'BrianP' (24 May 2013 @ 10:06)

Re: didn't take long... by 'itpro' (24 May 2013 @ 12:34)

Re: didn't take long... by 'BrianP' (24 May 2013 @ 12:47)

Re: didn't take long... by 'd-i-y71' (24 May 2013 @ 13:09)

Re: didn't take long... by 'itpro' << You are here!

Re: didn't take long... by 'PaulMRotax' (24 May 2013 @ 17:46)

Re: didn't take long... by 'd-i-y71' (24 May 2013 @ 18:03)

Re: didn't take long... by 'd-i-y71' (24 May 2013 @ 17:54)

Re: didn't take long... by 'PaulMRotax' (25 May 2013 @ 13:53)

Re: didn't take long... by 'itpro' (24 May 2013 @ 16:44)

Re: didn't take long... by 'BrianP' (24 May 2013 @ 17:35)

Re: didn't take long... by 'hetherip' (24 May 2013 @ 20:37)

Re: didn't take long... by 'itpro' (25 May 2013 @ 0:28)

Re: didn't take long... by 'BrianP' (25 May 2013 @ 9:29)

Re: didn't take long... by 'itpro' (25 May 2013 @ 23:14)

Re: didn't take long... by 'BrianP' (26 May 2013 @ 7:01)

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