Does any one know what the front scrub radius is meant to be in mm at the road surface, also is it positive, negitve or zero???
Scrub Radius
Started by
kek700
, Oct 25 2009 01:28 PM
9 replies to this topic
#2
Paulus H
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Posted 26 October 2009 - 12:32 AM
Unusual question.
You are taking me back to my days studying for my HND in Vehicle Design.
I am afraid I don't have an answer but I would be very interested to know why you are asking this question....
#3
cnrandall
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Posted 26 October 2009 - 09:40 AM
not the sort of info many people have kicking around... not even me! It's quite a large scrub radius though, small, highly inclined top wishbones and long bottom ones so lots of camber change....
#4
Muncher
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Posted 26 October 2009 - 09:59 AM
Simon at Cornering Force will have the data for 16" fronts but not the standard wheels.
#5
siztenboots
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Posted 26 October 2009 - 10:04 AM
Lotus Elise
Front suspension
roll centre height 30mm
travel 50mm bump / 60 mm rebound
camber gain in bump 0.31 degrees per inch
frequency 90cpm
KPI 12.0 degrees
Castor 4.25 degrees
Trail 4mm
Scrub radius 10.5mm
Rear suspension
roll centre height 75mm
travel 50mm bump / 70 mm rebound
camber gain in bump 0.45 degrees per inch
frequency 98cpm
#6
Paulus H
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Evil Triumphs When Good Men Do Nothing
- Gender:Male
- Location:DE65 5NX
- Interests:I really appreciate my car. I have piled on 100,000 miles in 8 years of ownership. I still love every day I get in it
Posted 27 October 2009 - 12:08 AM
Impressed!
#8
siztenboots
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Posted 27 October 2009 - 09:27 AM
not sure if that is S1 with alloy uprights , but are all the relevant pickup points , arms the same
#9
kek700
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Posted 27 October 2009 - 05:36 PM
thank you for the information...from the this i will assume positive scrub of 10.5mm
#10
sc-009
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Posted 28 October 2009 - 04:59 PM
Lotus Elise
Front suspension
roll centre height 30mm
travel 50mm bump / 60 mm rebound
camber gain in bump 0.31 degrees per inch
frequency 90cpm
KPI 12.0 degrees
Castor 4.25 degrees
Trail 4mm
Scrub radius 10.5mm
Rear suspension
roll centre height 75mm
travel 50mm bump / 70 mm rebound
camber gain in bump 0.45 degrees per inch
frequency 98cpm
I really must read that analysis document properly one day. Keep forgetting i have it, looks like a good read.
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