Push rod connected to upright instead of LCA
Push rod connected to upright instead of LCA
(OP)
Hi all,
Question: What is the main advantage for a road race car suspension, to have the push rod directly connected to the upright instead of connecting it to the lower control arm? is it just for packaging requirement or is there a real geometric advantage to it? i wonder because the ferari F1 have the push rod connected to the upright.
Thanks in advance.
Question: What is the main advantage for a road race car suspension, to have the push rod directly connected to the upright instead of connecting it to the lower control arm? is it just for packaging requirement or is there a real geometric advantage to it? i wonder because the ferari F1 have the push rod connected to the upright.
Thanks in advance.





RE: Push rod connected to upright instead of LCA
Regards,
Cory
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RE: Push rod connected to upright instead of LCA
It does eliminate a bending load on the arm that it would otherwise be attached to.
RE: Push rod connected to upright instead of LCA
Cheers
Greg Locock
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RE: Push rod connected to upright instead of LCA
RE: Push rod connected to upright instead of LCA
Almost all stabiliser bars that link to the spindle have some roll-steering effects.
Cheers
Greg Locock
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RE: Push rod connected to upright instead of LCA
I don't believe that bump inputs need affect the steering any more than they already can do with 'standard' geometry. But I have not analysed such a geometry personally.
Regards, Ian
RE: Push rod connected to upright instead of LCA
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: Push rod connected to upright instead of LCA
http://www.hemipanter.se/ klick
"Corvette Nordic Supercar"
If you look at the spherical bearing for the lower A-arm you will find that such unit can be used without suffering from vertical loadings which is not what they are designed for. In this case the loading will only take place in the bearing designed directions. It will also to some extent balance the side load of components during corenring.
Also, whatch that the forceline over all A-arm legs is focused in the centre of all spherical bearings.
Goran
RE: Push rod connected to upright instead of LCA
I am working on the design of a suspension for a prototype car (personal project), and having that push rod connected to the upright was interesting. But after playing around with the 3d model (and getting more gray hair then i can afford
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Regards,
Fom
RE: Push rod connected to upright instead of LCA
I think you have made the right decision to avoid it though as unless low speed understeer is costing you lap time it's best avoided as can make subsequent diagnosis of general handling issues more tricky.
Cheers,
Digger