AGK7
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| posted on 6/5/05 at 12:31 AM |
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Swapping Left & Right Front Uprights
Looking for a suitable donor for my front uprights and i was wondering if anyone knows of any ill affects of swapping front uprights from left to
right and visa versa?
I have found a suitable donor but the steering arm is rear not forward of the upright.
Any ideas on the affect on geometry would be appreciated.
Thanks
AndrewK
Australia
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nick205
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| posted on 6/5/05 at 06:20 AM |
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what are you looking at as a donor?
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DaveFJ
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| posted on 6/5/05 at 08:12 AM |
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depending on the design of the uprights the castor angle would be all wrong.
Dave
"In Support of Help the Heroes" - Always
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Bob C
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| posted on 6/5/05 at 11:15 AM |
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never mind caster - what about ackerman????
I'd respectfully suggest you probably want a bit of this - in the right direction!
cheers
Bob
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clbarclay
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| posted on 6/5/05 at 12:31 PM |
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If you use the rack from the same car then with the arms forward the steering would be reversed. If steering wheel were turend left then road wheels
would turn right.
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AGK7
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| posted on 3/6/05 at 04:24 AM |
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Sorry for not getting back sooner, posted this and sort of forgot i had 
nick205, I am looking at using a Nissan Skyline GT rear diff set up with a DeDion axle. My engineer wants me to use a single donor for my brakes
(perhaps this doesn’t make sense but that’s what he wants so that’s what he gets). I have an opportunity to get a full susp rear end and front
uprights and brakes at a pretty good price at the moment but am trying to work how to utilise the front brakes. I think it is going to be a matter of
adapting the brakes to a more suitable upright.
Thanks again for the comments.
Andrew
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theconrodkid
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| posted on 3/6/05 at 06:28 AM |
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did this by mistake on my first car,it was undrivable as angles were all over the place
who cares who wins
pass the pork pies
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kango
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| posted on 3/6/05 at 07:11 PM |
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Tried it on my Cortina uprights aswell, in order to get more space for my radiator, but Mr Ackerman destroyed this idea. Do some searchs on
"ackerman angle"
Defiately not a good idea.
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britishtrident
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| posted on 3/6/05 at 07:56 PM |
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quote:
Originally posted by kango
Tried it on my Cortina uprights aswell, in order to get more space for my radiator, but Mr Ackerman destroyed this idea. Do some searchs on
"ackerman angle"
Defiately not a good idea.
True Ackerman geometery dosen't exist in a rack and pinnion steering system.
Any ackerman effect on a Cortina front end comes from the fore/aft postion of the steering rack in relation to the outer track rod end centres, all
you have to do is position the rack correctly and you can has as much or as little ackerman as you desire.
The catch with turning the uprights upside down is not ackerman but the combination caster angle and kingpin inclination which are fix by the upright
design,
On a Cortina upright these cast in in angles are pretty small so the upright has been turned upside and used on the opposite side by some designers
(for example F27 used this set up).
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MikeRJ
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| posted on 5/6/05 at 02:06 PM |
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quote:
Originally posted by britishtrident
True Ackerman geometery dosen't exist in a rack and pinnion steering system.
Any ackerman effect on a Cortina front end comes from the fore/aft postion of the steering rack in relation to the outer track rod end centres, all
you have to do is position the rack correctly and you can has as much or as little ackerman as you desire.
The catch with turning the uprights upside down is not ackerman but the combination caster angle and kingpin inclination which are fix by the upright
design,
On a Cortina upright these cast in in angles are pretty small so the upright has been turned upside and used on the opposite side by some designers
(for example F27 used this set up).
Why would you want to turn the hubs upside down? Just to move from front steer to rear steer is vice versa only involves swapping left and right.
Isn't the Ackerman angle also dictated by the angle that the steering arm intersects the king pin axis? Or is that close to zero on the Cortina
hub?
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