Home  
Site Partners: SpotterGuides Veloce Books  
Related Sites: Classic Cars Monthly Your Link Here  

Go Back   TenTenths Motorsport Forum > Historic Racing & Motorsport History > Motorsport History

Reply
 
Thread Tools Display Modes
Old 18 Sep 2001, 16:45 (Ref:147925)   #1
simpson
Rookie
 
Join Date: Sep 2001
Location:
Ottawa, Canada
Posts: 3
simpson should be qualifying in the top 10 on the grid
Positive camber used in old race cars - why?

Why was it that the old, old cars used positive camber?? I hope that there's an expert in tech history here.

Bob Simpson
simpson is offline  
Quote
Old 18 Sep 2001, 17:50 (Ref:147963)   #2
Lola
Veteran
 
Lola's Avatar
 
Join Date: Jul 2001
England
Nr Worcester
Posts: 625
Lola should be qualifying in the top 10 on the grid
I think the car suspensions were designed to give negative camber as it travels upwards:confused: ........maybe

Take a look at www.monoposto.freeserve.co.uk
and look at technical tips. It explains this sort of thing.
Lola is offline  
Quote
Old 19 Sep 2001, 16:54 (Ref:148353)   #3
Yimkin
Racer
 
Join Date: May 2001
Posts: 170
Yimkin should be qualifying in the top 10 on the grid
Re: Positive camber used in old race cars - why?

Quote:
Originally posted by simpson
Why was it that the old, old cars used positive camber?? I hope that there's an expert in tech history here.

Bob Simpson
Well according to my Dad, It was a hangover from the days of horse and carts, really. Look at any picture of an old carriage and you will see very marked positive camber.
The reason was to achieve 'correct' steering geometry - if the wheel sloped inwards towards the ground, a line drawn through the kingpin (which the wheel swivels on) could intersect a line drawn through the centre of the tyre at the ground (all as seen from the front).
This results in zero leverage on the steering when the wheel hits a bump, and therefore no kickback at the wheel. It also makes the steering very light.
Modern steering boxes are not easily reversible, so kickback is less of a problem, and it is now seen as much more important to have the outside (loaded)
wheel vertical in a corner to get as flat a contact patch as possible. Static negative camber can achieve this. Bugatti period tyres were almost round in section so were hardly affected by camber.

He then goes on to tell me to buy a book and save him from typists cramp
Yimkin is offline  
Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
How much camber? ozracer Racing Technology 47 13 Sep 2007 07:41
kpi camber caster & toe breezeblock Racing Technology 7 6 Jan 2006 08:40
Positive camber on very old race cars simpson Racing Technology 2 19 Sep 2001 16:57
Wheel Camber Simon Harvey Racing Technology 11 5 Aug 2001 13:30


All times are GMT. The time now is 17:18.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Original Website Copyright © 1998-2003 Craig Antil. All Rights Reserved.
Ten-Tenths Motorsport Forums Copyright © 2004-2021 Royalridge Computing. All Rights Reserved.
Ten-Tenths Motorsport Forums Copyright © 2021-2022 Grant MacDonald. All Rights Reserved.