Tubular front wishbones

[gnutz2]

I made these for my golf (but they will fit any s2, avant or coupe), now i'm making some with more castor angle.

They have the same dimensions as standard but the track of the car can be made wider.

They're made from regular mild steel tube, i could have used cromoly but they're so short and stiff i think you would do a good job to bend them .

They take standard ball joints and i machined top hats so the Rose joints fit the standard subframe.

The rose joints (5/8 x 5/8 UNF size) are the budget ones from mcgill motorsport so probably wont last long on the road. If i carried on using them i would replace the joints with higher quality items which is easily done.

Looking for £250 + postage for the pair.

[Rusty]

Beast

How come you went for bent edges over a straight ones? Is there a clearance issue with the side?

[Error404]

interested in making some added castor ones to take standard sized poly bushes?

[gnutz2]

Beast

How come you went for bent edges over a straight ones? Is there a clearance issue with the side?

Yes Andy, to give clearance to the inside of the wheel on full lock.

I suppose rear wishbones could be straight.

interested in making some added castor ones to take standard sized poly bushes?

If you told me how much more castor you wanted and send me the bushes you are using i could make them yes.

The angle of castor is not much use for me, all i would need to know is how much further forward you want the ball joint to be over standard

Just roughly worked out you need to move the ball joint 4.4mm for every 1 deg of castor.

[terrybullwon]

Baz they look great,

Did you see these?

[Rusty]

It's about a 1:60 relationship for 1 deg (sin 1deg = 0.0175, 1/60 = 0.0167). As the strut is about 600mm long, you move the base about 10mm (forwards) to gain 1 degree of castor. You could always double drill them and thus do both with one design.

[gnutz2]

It's about a 1:60 relationship for 1 deg (sin 1deg = 0.0175, 1/60 = 0.0167). As the strut is about 600mm long, you move the base about 10mm (forwards) to gain 1 degree of castor. You could always double drill them and thus do both with one design.

Yep just measured and top mount to ball joint is about 600mm compressed.

[gnutz2]

Baz they look great,

Did you see these?

Yes James, didnt albert make those.

[Rusty]

You have measured a radius of 600mm so:-

Assuming a few things as it's v. small angles.

600 x sin(1) = 10.47mm

At small angles you can assume that arc length is approximated by a straight line.

My top mounts move the top of the strut 7.5mm and I think I've got the subframe mounts to move things about the same the other way, thus adding 1.5deg castor. The factory lower limit is 1.5 IIRC so that's double. There's a good 0.5 deg adjustment on the lower BJ so I'd hope to get between 3.5 and 4 deg by the time I was done. Still <1/2 the BMW's 10deg.

[terrybullwon]

Yes James, didnt albert make those.

These are AM cars £275+ vat each and then £180 for the cnc ball joint sleve and then £80 for the Sephircal bearing .

I think Alberts were un-heat treated mig weled ones.

I am going to have a go at making a full set next week i hope, What size tubing did you use? 35mm with 3mm wall?

i quite like this design with a rose joint at the end that then connects to the hub housing.

[terrybullwon]

[gnutz2]

Some food for thought there james.

Intresting, in the last pic you can see an extension peice on the rose joint to straighten the wishbone out after lowering.

Also look at the ammount of castor on the front ones, must be 2 inches or more than standard.

I used 1" tube with 2mm wall.

[terrybullwon]

The first picture, Car has adjustable top camber and castor plates also.

But also has audi sport hubs.

Yeah the rear uses the stock hub buy the looks of it and runs that tube down to the rose joint to replace the head of the ball joint.

So how long do you think you spent making them roughly? (trying to plan a day off)

[gnutz2]

Roughly an hour to make a jig, then roughly two hours for each wishbone depending on the spec and how good your setup is.

I'd want two days because i dont like rushing and i like my breaks.

[terrybullwon]

Roughly an hour to make a jig, then roughly two hours for each wishbone depending on the spec and how good your setup is.

I'd want two days because i dont like rushing and i like my breaks.

I have some old pressed Arms here think they will make a good enough Jig?