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Malcolm Oastler's new car


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#1 NRoshier

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Posted 01 May 2020 - 04:38

Malcolm is building a new hillclimb car. I thought some on here could be interested. His latest video is this one:


Edited by NRoshier, 01 May 2020 - 09:43.


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#2 gruntguru

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Posted 01 May 2020 - 07:54

Some good insights there. Most importantly - a lot of the things that get knickers in a twist are not worth bothering about on a race car. eg roll centre migration, Ackerman.

 

Disagree with this:

 

. . . steering weight isn't a function of caster angle, its a function of trail . . .

 

Unless the scrub radius is zero, its a function of both. The "weight jacking with lock" adds to steering weight.



#3 Ben

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Posted 01 May 2020 - 17:53

He has such a calm, therapeutic tone. Watched all of them whilst cooking dinner this evening. Lovely.

 

I share his disdain for kinematic roll centres and why worrying about their migration is pointless. BTW, this book has some good maths and discussion on why the confusion about roll centres has arisen: https://www.amazon.c...s/dp/0128126930

 

Ben



#4 Greg Locock

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Posted 02 May 2020 - 02:05

I think the point about caster affecting SWT is that it cancels across the car.



#5 NRoshier

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Posted 02 May 2020 - 13:47

SWT - steering weight?



#6 brakedisc

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Posted 02 May 2020 - 22:45

So old school. Love it.



#7 Greg Locock

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Posted 03 May 2020 - 00:21

steering wheel torque. Everything is a three letter acronym! Even yaw velocity is YAW, so I'm glad i don't have to talk about Yaw much, to those people.



#8 NRoshier

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Posted 03 May 2020 - 01:59

Thanks for that, I dead the TLA's.



#9 gruntguru

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Posted 03 May 2020 - 04:12

NASA.



#10 Greg Locock

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Posted 03 May 2020 - 06:51

TOFLA, which isn't one.



#11 NRoshier

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Posted 03 May 2020 - 13:03

I am amused by ARSE:

 

https://spaceaustral...tions/frontpage



#12 kikiturbo2

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Posted 10 May 2020 - 19:45

Suspension bolts in single shear!



#13 pierrre

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Posted 15 May 2020 - 15:16

name sounds familiar



#14 SGM

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Posted 26 May 2020 - 02:02

I haven't watched every video but I wonder if he has read the CAMS manual prior to starting? A couple of years ago they changed the Formula Libre rules and as I understand them,16mm wheel tethers are now required amongst other things. It seems ludicrous to me as Formula Libre cars are most likely competing at Hillclimbs where spectator attendance is minimal compared to a V8 supercar meeting and as far as I'm aware the V8's don't require wheel tethers. I read into it that CAMS are trying to stamp out home built Specials, although the loophole may be that if you build a Sports car you don't need to go to the same lengths?



#15 Librules

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Posted 27 May 2020 - 16:28

On my reading the requirement for tethers is for Formula Libres in Race events,  not Speed events so Malcolm's car should be ok if he sticks to hillclimbs and sprints.