paul_mcq
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| posted on 31/12/03 at 08:13 PM |
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can sierra front hubs be used?
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Ben_Copeland
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| posted on 31/12/03 at 09:12 PM |
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Yes, do a search. It's been covered loads. MK use them as do many others. including myself !
Ben
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stephen_gusterson
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| posted on 31/12/03 at 10:26 PM |
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Paul
I wonder if you might like to consider joining in the general fun and banter, rather than just posting one liners, as if this site is just an auto
answer knowledge base.
said in the nicest possible way.
atb
steve
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bob
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| posted on 1/1/04 at 12:28 AM |
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Here's mine on the MK
 
Rescued attachment view over front hub.jpg
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Hellfire
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| posted on 1/1/04 at 10:31 AM |
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Bob question
couldn't help but notice on your setup; assuming the flexi's are to the rear; the mushroom thingy which the top balljoint fix's into
is in the opposite way to ours... is there a handling reason per chance?
Just a general question as we were advised otherwise 
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Ben_Copeland
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| posted on 1/1/04 at 10:41 AM |
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Think you'll find that Bob's is the way your supposed to fit it. I made mine, without seeing or knowing about anyone elses, and thats the
way i fitted mine. Thats the MK way, and everyone elses way. Cant see how it would work the other way round. Just aslong as your talking about
the mushroom insert where the sierra shock should be
Ben
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Hellfire
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| posted on 1/1/04 at 11:15 AM |
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Stranger and stranger
Image deleted by owner
This is a picture of MK's Red Rocket... with suspension setup. The mushroom thing double touching circle thing is to the front... am I missing
something?
If you don't see the image look at pic p90301651 in our archive.
[Edited on 1-1-04 by Hellfire]
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Ben_Copeland
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| posted on 1/1/04 at 11:17 AM |
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Errrrr so is bob's ??!??!?!?! There's no difference
Image deleted by owner
[Edited on 1/1/04 by Ben_Copeland]
Ben
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Z20LET Astra Turbo, into a Haynes
Roadster
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Hellfire
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| posted on 1/1/04 at 11:22 AM |
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Oh, erm, ?, hmm...
must be the angle I'm looking at it then... we have ours same as MK's. Just a clarification point 
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Ben_Copeland
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| posted on 1/1/04 at 11:24 AM |
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Yeh, its the angle of bob's picture, if you glance at it, it makes it look like the balljoint is offset the other way but it's not
Ben
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bob
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| posted on 1/1/04 at 11:29 AM |
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quote:
Originally posted by Hellfire
couldn't help but notice on your setup; assuming the flexi's are to the rear; the mushroom thingy which the top balljoint fix's into
is in the opposite way to ours... is there a handling reason per chance?
Just a general question as we were advised otherwise
Not sure i understand the question ,the insert can only go in one way and then you determine the angle of the hub related to top balljoint.
The rule of thumb seems to be that the hub should be leaning backwards slightly,this puts more weight on the hub to aid steering.(this information
came from just about every other MK indy builder as well as MK)
Also remember that the top wishbones are handed for left and right,they too should make the hub lean back slightly.
I've have seen cars with the top wishbone on upside down as well,which i have been told will make the steering "lock out"
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stephen_gusterson
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| posted on 1/1/04 at 11:35 AM |
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I think (having not seen the part) that he means the hole isnt in the centre of the adapter - excentric - and you can move the dapter around to give
camber change and castor change.
I made my own with the hole in the centre and it seems to work.
atb
steve
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bob
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| posted on 1/1/04 at 11:41 AM |
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Yes your right steve they are off centre,and i think the later adapters are even more excentric by at least another 5mm off centre.
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Hellfire
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| posted on 1/1/04 at 11:42 AM |
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ITS MEEEEE
Upon closer scutiny of the picture that Bob posted - it's his foot that distracted me
It's no doubt it's my interpretation of the picture and the angle of Bob's photo which was obviously so he didn't loose his
balance.... errr maybe....
I apologise for my poor parallax error and defer to Bob's, Ben's and everyone else's superior knowledge. I'm not really a
senior builder just a happy poster!!!
HaPpY NeW YeAr To YoU AlL!!!
Where's me bottle gone???
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dozracing
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| posted on 1/1/04 at 12:54 PM |
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Thinking about this logically, it doesn't matter how you put the mushroom in, the castor angle is determined by the centre of the balls of the
ball joints top and bottom. The mushroom insert can be in any orientation and it doesn't effect the ball joints position and therefore cannot
effect castor, or indeed the steering feel.
Kind regards,
Darren
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JoelP
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| posted on 1/1/04 at 09:31 PM |
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indeed darren, i thought that myself a while ago. However, on a poorly designed car like mine, it allowed a bit more play in the camber settings, as
my top bone was a fraction too short so i spun the mushroom round to make the wheel more upright.
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Rorty
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| posted on 2/1/04 at 01:49 AM |
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dozracing:
quote:
Thinking about this logically, it doesn't matter how you put the mushroom in, the castor angle is determined by the centre of the balls of the
ball joints top and bottom. The mushroom insert can be in any orientation and it doesn't effect the ball joints position and therefore cannot
effect castor, or indeed the steering feel.
Darren, are you being serious? It won't alter the castor or camber by much, but it will alter it some nonetheless.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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Mix
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| posted on 2/1/04 at 08:33 AM |
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Confused
On first reading Darren's response I was inclined, (no pun intended) to disagree. However after further consideration, prompted by Rorty,s reply
I'm now not so sure.
Would it be correct to say that adjusting the eccentric will adjust camber but not castor?
Mick
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Simon
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| posted on 2/1/04 at 09:34 AM |
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With an offset hole in the mushroom, you will be able to adjust camber and castor.
HNY
ATB
Simon
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kingr
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| posted on 2/1/04 at 09:35 AM |
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My opinion would be that it would make substancial changes to camber, and possibly small changes to castor - it quite possibly alters the distance
between the ball joints fractionally, hence changing the castor angle, but to what degree this would occur, I wouldn't like to comment.
Kingr
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Mix
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| posted on 2/1/04 at 10:04 AM |
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Kingr
Isn't the position of the balljoints fixed by the wishbones ? (castor wise)
Thought provoking
Mick
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Simon
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| posted on 2/1/04 at 11:42 AM |
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Set the adaptor with balljoint hole in its furthest forward position, and set the camber to vertical (by using the thread on the balljoint).
Now rotate adaptor 90 deg anticlockwise (work with offside only cos it's reversed on t'other), camber becomes positive, and castor
decreases. Rotate another 90 degrees and camber resumes neutrality and caster decreases further. Turn left again and you'll have neg camber and
increased castor.
The wishbone doesn't move, only the upright's position changes.
Clear
Trust me, I've got them. If hole is 1/2" of centre, then you'll have an inch to play with.
ATB
Simon
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Alan B
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| posted on 2/1/04 at 02:14 PM |
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My opnion....
Castor angle will not change (as Darren says it is determined by BJ positions), but trail (distance between line through BJs and tyre centre line
point where the intersect the road) will vary because the actual wheel itself will be moved forwards or backwards and consquently affect
self-centreing....after all the purpose of castor is to create trail.
So althogh the actual angle of castor is unchanged it will certainly show the effects of being changed.
Camber is changed of course, on question there.
Again all IMO.
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Mark Allanson
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| posted on 2/1/04 at 02:36 PM |
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Just to add another spanner to the works, you will also be adjusting the King Pin Inclination by effectively changing the geometry of the upright but
only if you correct the camber change.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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kingr
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| posted on 2/1/04 at 02:37 PM |
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quote:
Originally posted by Mix
Kingr
Isn't the position of the balljoints fixed by the wishbones ? (castor wise)
Thought provoking
Mick
Mick,
Yes, they've both fixed in vertical planes by the wishbones, but if you change the distance between the two, the angle made between the line
through them and "vertical" will change - if you leave the bottom wishbone static and raise the top, the angle will get closer to
"vertical".
Kingr
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