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Russell
Firing on two.
Joined: November 29th, 2008, 10:05 pm Posts: 9259 Location: West Sussex, U.K.
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 I fought the law (of gravity) and the law (of gravity) won.
Driving round Snetterton last weekend with a couple of photographers stood up in the back and my mate Dave on the passenger seat, when completely unprovoked going round the hairpin the car went up on two wheels. Why? Normal 2cvs don't fall over when you go round corners and mines 6" lower than normal. I drive it like a total hooligans most days and even when trying the most unstable thing I can achieve is a smidgen of oversteer, and with turning in sharply and backing off. Why doesn't it fall over when I do that, and why don't normal wobbly 2cvs fall over when people hang out the roof? What's going on here?
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samfieldhouse wrote: What I like about I2F is that there is no pretence of democracy.
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September 6th, 2013, 7:11 pm |
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PatrickMason
Firing on two.
Joined: July 22nd, 2010, 10:22 pm Posts: 366 Location: Loughborough
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 Re: I fought the law (of gravity) and the law (of gravity) w
From learning some physics: the centre of gravity of the car was higher due to 2 people standing up and cornering moved the c.o.g outside the wheelbase, especially if they were leaning over the roof....?
Doubt it but I can't think why otherwise...
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  Overly Ambitious Project
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September 6th, 2013, 7:26 pm |
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subarupete
Firing on two.
Joined: March 5th, 2009, 6:23 pm Posts: 2247 Location: Near Monmouth
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 Re: I fought the law (of gravity) and the law (of gravity) w
Were the photographers well built? Raised C of G?
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September 6th, 2013, 7:28 pm |
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J-dub
Aircooled Idiot
Joined: April 24th, 2010, 10:01 am Posts: 5733 Location: Location Location
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 Re: I fought the law (of gravity) and the law (of gravity) w
Big tits?
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1988 2cv 652cc 1993 Toyota Hilux Surf 3000cc runs on Bio Diesel 2004 Toyota Landcruiser Amazon 4200cc runs on Bio Diesel 1998 Daihatsu Hijet 1300cc 2005 Susuki Bandit 650cc
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September 6th, 2013, 7:42 pm |
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Nelsthebass
Firing on two.
Joined: October 5th, 2009, 8:22 pm Posts: 1415 Location: Stone, Staffs
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 Re: I fought the law (of gravity) and the law (of gravity) w
I suspect that most normal rolly polly 2cv's are forgiving of a high c of g as the suspension has such long travel - I guess you may have also got stiffer suspension (or the coefficient of friction is higher) with lowered suspension so when you have a much lower c of g but a higher relative weight above that, if peeps are standing up, will make a much bigger effect than when you are hooning on your jack jones...
_________________ 1987 2CV Special 2014 Suzuki Swift Sport 2015 Lexus NX300h 1966 Ami Break
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September 6th, 2013, 8:47 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am Posts: 3675
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 Re: I fought the law (of gravity) and the law (of gravity) w
Russell, how many of the bump stops are in place and functional on your car? From http://www.trackpedia.com/wiki/Vehicle_ ... #OVERSTEEROVERSTEER Causes of Corner Entry Oversteer include; Severe rearward ride rate/roll resistance imbalance Rear roll centre too high etc, etc.
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September 6th, 2013, 9:36 pm |
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Russell
Firing on two.
Joined: November 29th, 2008, 10:05 pm Posts: 9259 Location: West Sussex, U.K.
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 Re: I fought the law (of gravity) and the law (of gravity) w
All bumpstops present and correct. Only suffers lift off oversteer if provoked.
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samfieldhouse wrote: What I like about I2F is that there is no pretence of democracy.
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September 6th, 2013, 9:39 pm |
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ayjay
Firing on two.
Joined: April 27th, 2012, 6:48 pm Posts: 709
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 Re: I fought the law (of gravity) and the law (of gravity) w
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Last edited by ayjay on September 10th, 2013, 2:19 pm, edited 1 time in total.
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September 6th, 2013, 9:43 pm |
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Nelsthebass
Firing on two.
Joined: October 5th, 2009, 8:22 pm Posts: 1415 Location: Stone, Staffs
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 Re: I fought the law (of gravity) and the law (of gravity) w
Most front drivers wil tend to lift off oversteer, due to an imbalance in weight distribution, if, and it's a big if, they are provoked - a dab of brake in a tight bend, shitty rear tyres, poor tread on a wet road - in the main provided you don't screw with the suspension from stock settings, cars are remarkably stable in most conditions....
_________________ 1987 2CV Special 2014 Suzuki Swift Sport 2015 Lexus NX300h 1966 Ami Break
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September 6th, 2013, 10:12 pm |
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Russell
Firing on two.
Joined: November 29th, 2008, 10:05 pm Posts: 9259 Location: West Sussex, U.K.
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 Re: I fought the law (of gravity) and the law (of gravity) w
It's not the oversteer that bothers me, I know how all that works and that's fun, I don't understand why it went to roll over so easily with no provocation, yet unladen it has never ever done that, and how comes with all the dicking about that's gone on in normal 2cvs why I've never seen one do it before*
*except my old Dyane but I had two proper fat birds and a fridge freezer in that, and it was wound right up high.
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samfieldhouse wrote: What I like about I2F is that there is no pretence of democracy.
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September 6th, 2013, 10:23 pm |
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