caster/camber adjustable front arms.

[alloyproducts]

hi ive been working on these for a while now, hopefully will have some ready to put photos up tomorrow. they are constructed of think walled cds tube, and a powder coated finish. and can be fully adjusted once bolted on the car. we have over engineered them cause of the weight of the 6 cylinders under braking. prices are looking at being around the £295 plus vat mark for a pair. they would be perfect for track days, drifting and any race series that allow these mods. may think about doing a group buy on these if theres enough interested.

[mattG]

Sounds like a nice peice of kit

[alloyproducts]

thanks, i will post a pic of one up tomorrow. i could have made them cheaper but at a cost of using cheaper smaller rose joints, but thats not i like doing. just need to find a car to try them on now.

[JimmyC]

thanks, i will post a pic of one up tomorrow. i could have made them cheaper but at a cost of using cheaper smaller rose joints, but thats not i like doing. just need to find a car to try them on now.

If these are adjustable topmounts, consider your test car found ;)

Also need to speak to you re swirl pot and a custom header tank for a cobra project, can you PM me a number?

[Turbo-Brown]

Can you post up your calcs / proovings of their strength and fatigue life (assuming that's an issue) ?

[GermanGorilla]

Hi,

Have you used a Standard E30 Wisbone as the Template ?

Or, have you used some original Spec or copy Grp A/DTM adjustable
arms as a pattern ?

Or neither ?

From a strength perspective, you will need 16mm Rod end at the
chassis rail end, at least a 10mm rod end at the damper / strut kunckle
and what bearing have you used/ gone with for the subframe locating
pick up ?

How are you loacting at the chassis rail end ?

Are you using an inclined angle at the subframe location so that the
bearing there sits true, with the suspension set at average ride height,
or an acute angle bearing so that it rides at an angle which may alter
the overall King pin angle and can effect handling.

Would be interested to learn more and assist if I can.

In that a Grp A / DTM adjustable arm set up is around 2000 euro +
without subframe modifications etc, then a fully adjustable budget
version that works would have a market place.

Regards,

The Gorilla.

[GermanGorilla]

Hi,

Also forgot to mention that most Grp A / DTM front arms are '
6130 ? or higher aero grade alu.

Makes for a unsprung /sprung weight saving.

Regards,

The Gorilla.

[GermanGorilla]

Hi,

Yet again !!! would be interested to discuss the rear suspension
with you as well, as this is where unles your fork out 5000 euro
plus for DTM Monocouque rear arms, and all the problems that go
with them, that some rear weight saving can be made.

Regards,

The Gorilla.

[alloyproducts]

hi german gorilla, cant say to much till they are finished, but im using 3/4 (19mm) rod ends with 5/8 hole at both ends of the subframe and leg, and 5/8 rod end on the tie arm, the main rod ends them selves have a static radial load of 16500lbs. the type that are used for the cosworths are 5/8unf and have a load of 12000. although most cosworths are going to produce alot more power, we were taking into consideration the weight transfer of the 325i 6 cyclinder under braking.
also because the other arms are under a compression load under braking they have to be stronger than if they were in a tensile load, (ie mounted at the front of the car) have also taken into account leverage on the compression arm under braking (dont have time to go into detail but its to do with pivot points ect) to decide where the compression arm should mount to.
im having to finally use all stuff i learned in physics at college when i did my engeering courses.
if you want any other info feel free to ask.

i may also look into providing rose jointed rear arms on an exchange basis as well.

[ste]

Are these race use only or are the RJs under crud covers?

[Turbo-Brown]

Sounds like you've thought about it which is good, but I'd want to see some numbers before buying such a safety critical component, especially where is comes to material stress.

I'd certainly want to be sure that, even if the arms didn't fail immediately (which I'm sure they won't!) that they weren't likely to fail after a few year's service.

Sorry to be such a bore on this, but I think it's extremely important that these things are fully taken into consideration before a product like this finds it's way onto a road car.

[oze30]

Sounds good, but would like to see some figures are fail point and how. Just out of interest, for those doing engine swaps, will this be strong enough to cope with a V12/V8 etc etc?

Rose jointed would be cool, bit noisy, but still cool!

Cheers