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different rear arms/hub locking 
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Post different rear arms/hub locking
Hi , i picked up another coupe , was looking over it and on the rear it has the mini type bottom arms (adjustable) with ball joint but the top is set up with two bars going to the hub and where the top ball joint was(the bars are fitted to another bar that fits where the top arm goes in the subframe),locking the hub, this means no locking bar etc for the steering , will take a photo tomorrow it would be interesting to get an opinion as to whether it will be as effective as other methods .


Fri Oct 14, 2011 12:21 am
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Post Re: different rear arms/hub locking
If done right it has potential of being a good system with no.minimal bump steer.

Get a pic up, I take it, it is on Coil overs due to this.


Neil

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Fri Oct 14, 2011 10:44 am
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Post Re: different rear arms/hub locking
Sounds familiar :wink:

But inverted.

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Fri Oct 14, 2011 12:21 pm
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Post Re: different rear arms/hub locking
Image
Image
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Hi , heres some pics , hope this makes it clear , is it similar to what you thought Neil ? interested to hear the pros and cons , cheers


Fri Oct 14, 2011 10:33 pm
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Post Re: different rear arms/hub locking
Mine locks the lower part of the hub. Its fully adjustable, Toe in and out, camber and caster as it picks up the tie bar as well. these are old and not great pictures I know but hope it gives you all an idea what I'm on about.....




This is looking down the drive shaft at the outboard CV with the tie bar to the left of the shot. This is rod end adjustable outboard as you can see and inboard

Image






This is looking rearwards from the rear bulkhead at the tie bar pick up, which is adjustable at the rear bulkhead by way of a rod end.

Image





Looking From the rear, at the rearward adjustable arm.

Image

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Last edited by turbocox on Mon Oct 17, 2011 10:11 pm, edited 3 times in total.

Sat Oct 15, 2011 4:30 pm
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Post Re: different rear arms/hub locking
Hi turbocox, looks like a decent set up for making adjustments and still does away with the need for the extra bar to 'lock' the steering ,also no rubber in yours which i hope helps (going to try taking out the bushes on my coupe i drive), how do you find the handling ? im not likely to try this one out for a while, but am thinking of using this set up on the road , cheers


Sat Oct 15, 2011 9:52 pm
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Post Re: different rear arms/hub locking
Interesting, Do you have a pic of the front of the tie bar by any chance?


Sat Oct 15, 2011 10:50 pm
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Post Re: different rear arms/hub locking
No picture, but it has Adjustable caster, as the tie bar has a rose joint at the bulkhead end.

The tie bar length is shorter due to the distance between the new forward lower arm.

The standard pickup point for the tie bar is still there.

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Sun Oct 16, 2011 8:36 am
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Post Re: different rear arms/hub locking
turbocox wrote:
...The standard pickup point for the tie bar is still there.

Do you mean it still uses the std pick up point?
It looks like your arms are parallel, or is that just an optical effect?


Sun Oct 16, 2011 11:43 am
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Post Re: different rear arms/hub locking
If you look at this picture of a adjustable tie bar from minispares, the only difference to mine is that mine is shorter.
.


Image

It justs bolts to where you would normally fit your rubber tie bar bushes




The subframe has some extra strenghting at the pickup point, where the rose joints bolt on.

It effectively makes the tie bar, and the forward of the two lower arms into a wishbone, and the rearward lower arm
is acting as the toe adjustment.






Have a look at this picture of an old 60's Lotus, and imagine the forward part of the rewerse A arm being a sparate arm
becoming two lower arms like mine has. :wink:
Image

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Mon Oct 17, 2011 10:00 pm
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Post Re: different rear arms/hub locking
realscamp wrote:
Hi turbocox, looks like a decent set up for making adjustments and still does away with the need for the extra bar to 'lock' the steering ,also no rubber in yours which i hope helps (going to try taking out the bushes on my coupe i drive), how do you find the handling ? im not likely to try this one out for a while, but am thinking of using this set up on the road , cheers



This setup has been on for the last 4 or 5 years and I have lent on it VERY HARD, with no problems.

Road and track (for some reason folk think it will crash about during normal road driving) the handling is great.
I live just outside Milton Keynes the land of roundabouts, 90 degrees cornering is almost possible :shock: :lol:
(anyone remeber Automan :shock: :oops: :oops: )

The other thing you need to remeber is if you have a early car your steering rack will be mounted to the front of the
tub and not the subframe.

If it is mounted to the tub, the rack will move, as the front bulkhead to where the rack is mounted flexes quite alot :shock: :wink:

:idea: Move it to the subframe (as per later Coupe's) for saftey sake :idea:

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Mon Oct 17, 2011 10:24 pm
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Post Re: different rear arms/hub locking
What are those rear hubs off?


Mon Oct 17, 2011 11:00 pm
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Post Re: different rear arms/hub locking
Mini, with a machined block spun onto the bottom, using a balljoint shim to get it, as near damit 90degrees to the driveshaft.

Then it was passed to a fabricator at work, to weld in extra webbing strengthing.

Before anyone says it, Ahh......Oh..No you can't weld that..... it was done by a specialist, in cast welding.

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Tue Oct 18, 2011 12:48 pm
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Post Re: different rear arms/hub locking
You got a drawing of the block or was it done the traditional way?


Wed Oct 19, 2011 8:37 am
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Post Re: different rear arms/hub locking
realscamp wrote:
.... is it similar to what you thought Neil ? interested to hear the pros and cons , cheers



Been a little busy to comment,

Yes simular to what I thought providing its done right it will have zero bump steer, Toe will be a little difficult to adjust by the look of it. One obesrvation I would like to see a little more triangulation between the two arms to stop them lozenging. Or say the front arm a bit more U section in shape and tied into the inner/outer pivot tubes.

In all a good solution, and is better than the original GTM solutions in my view.


Ill be honest the hub adaptor is looking simular to an idea I have for my new suspension I am constructing, a true wish bone top arm setup on my new frame , which is a combination of your car and Turbocox's ideas in a way. I am just struggling to get every thing around a Honda engine/gearbox.

Neil

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IF wile e coyote had a GTM he would have one with Nitrous too! watch out road runner! The First GTM into the 11s then the 10s, PB 10.87 @ 125.5 Mph on A048 tyres, and fully road legal at Santa Pod


Wed Oct 19, 2011 10:46 am
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