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Centre Of Gravity


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#1 Pooky

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Posted 29 August 2008 - 10:33 PM

Does anyone know where the centre of gravity on the average Mini is?

Just out of interest...

#2 Mini_Magic

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Posted 29 August 2008 - 10:52 PM

In the centre, god I'm clever.

But seriously, I would imagine it would be around the bulkhead as the majority of the weight in a Mini is right up the front.

#3 Ethel

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Posted 29 August 2008 - 10:53 PM

The Race 'n Rally car source book has some info I think. Or if anyone has had their corner weights set...

The suspension uses the same rubber springs at both ends and manages to stay pretty level by using 3:1 leverage up front and 5:1 for the bum so that suggests a 5 to 3 split.

#4 gordioda

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Posted 29 August 2008 - 11:06 PM

if you dont get a reply i'll check the race and rally source book, i was wondering about this recently too, im going to guess at around gearstick-ish

#5 Ethel

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Posted 29 August 2008 - 11:12 PM

There's actually quite a few Mini facts 'n figures in there.

#6 Jammy

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Posted 30 August 2008 - 11:05 AM

Corner weights alone wouldn't tell you, as it wouldn't help you work out the height.

#7 Rosslin Racing

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Posted 30 August 2008 - 02:44 PM

corner rear= 102kg corner front= 178kg this is not a road car.

#8 taffy1967

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Posted 30 August 2008 - 04:40 PM

The very early Mini brochures used to bang on about the Minis legendary low centre of gravity. I don't think they provided any real facts or figures though, but it's Motorsport victories more than proved a lot at the time.

#9 Ethel

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Posted 30 August 2008 - 05:04 PM

Corner weights alone wouldn't tell you, as it wouldn't help you work out the height.


This is true, any volunteers to see how far they can tip their car without it turning turtle?

We know about the dash hole for rotary dipping the shell (must be near its C -o- G) and some one suggested a weight for the shell recently that was a bit more than a 1/4 of the whole up weight. That'd suggest it's a fair way under the dash rail.

Edited by Ethel, 30 August 2008 - 05:04 PM.


#10 Rosslin Racing

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Posted 30 August 2008 - 07:24 PM

try 13" above ground level!! thank you Mr Vizard

#11 Ethel

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Posted 30 August 2008 - 07:37 PM

try 13" above ground level!! thank you Mr Vizard


Is that from "How to Modify your Mini"? Whereabouts, I know he mentions roll centres with his beam axle?

A piccy of Russ Swift pulling the 2 wheel stunt 'd give a big clue.
Posted Image

Edited by Ethel, 30 August 2008 - 07:46 PM.


#12 Rosslin Racing

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Posted 04 September 2008 - 05:40 PM

Love the photo, yes the part on rear beam axles, look at the Aldons axle without digging the book out.

#13 tom130691

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Posted 04 March 2013 - 07:22 PM

bit a bump however im struggling to get a vertical COG,

the 13inch stated here in vizards book is a roll center height not a center of gravity,

more constructively

the longitudinal position of the COG is 0.75332
from the center of the front wheel




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