GermanLook Forums

GermanLook Forums (https://www.germanlook.net/forums/index.php)
-   Suspension (https://www.germanlook.net/forums/forumdisplay.php?f=12)
-   -   Double A-arm suspension (https://www.germanlook.net/forums/showthread.php?t=2070)

JiI April 9th 2007 10:05

a-arm update
 
Just an update. The lower arms are done and the front mounts are coming along. I switched over to 74' superbeetle spindles, ford bolt pattern and a 944 lower ball joint to hook everything up. I have a bit more to weld up, then I'll post pictures. Time is tight and the weather sucks right now. I'll get back to it soon. I get the 915 tranny tonight so I can start on the rear suspension in AutoCAD next!!!!
JiI

volkdent April 10th 2007 00:06

Sweeeeeet! Keep us posted.

Jason

The Pirate May 13th 2007 01:33

I have had to wade through a load of personal crap for awhile now that has slowed my project way down. how ever things are picking up and I will soon be catching up and posting some pictures.

pure55vw July 20th 2007 01:40

1 Attachment(s)
An update on my project: I finally got it installed it on my '55 (see pix). The suspension has been performing well. The addition of more caster (about 7.5 degrees) greatly reduced the "wandering" tendency and the front tracks much better now. The plan now is just to pile up the miles (and add a little paint!) Also planning to build a new subframe. The original one on there has been modified enough, it's time to build a "cleaned up" version. I have more pictures I'll post soon. Also would like to add dust covers to the shocks. Does anyone know where to get shock "boots" for Carrera coilovers?

volkdent July 20th 2007 14:46

Thanks for the update!!! I havn't seen your car as a whole, but I'm guessing with the narrow fronts you are running a Cal-Look style. That reduces the castor you might have had setup with a flat pan during fabrication. I kept bugging the guy who designed mine to make sure there was enough castor adjustment for that very reason. Keep us posted.

Jason

volkdent December 4th 2007 01:16

Finally took the car for a short test drive today! Found this terribe metal-on-metal grinding sound from the front end, pulled the tires off, but couldn't find a thing!!! Torqued up the wheels and went to go for another run, but backing it out the noise just got louder. Pulled the tires off again, and this time I saw what was causing the problem, the inner edge of the rotor was rubbing on the bottom edge of the cup for the lower balljoint! I ground some of the the offending metal off, and on the second trip it was fine except at extreme angles, so I've got a little more to go, but should be fine. I'm aways from real testing, but I'll keep this thread up to date as things progress.

Jason

DORIGTT December 4th 2007 17:27

Excellent:D

What're you pulling down now? 2.1g lateral?

volkdent December 4th 2007 22:21

Quote:

Originally Posted by DORIGTT (Post 62802)
Excellent:D

What're you pulling down now? 2.1g lateral?

At least, on Big O tires... :lmao: ;) :D

I think the chassis will need a lot of stiffening first before I really start to push it. I think the whole body is pretty flexy, so I think I'll start with the chassis stiffeners from Eyeball Engineering(heavy though..), then start tying those to a roll cage. I just don't want to add too much weight. Even with just being lowered like I had it years ago there where cracks appearing in the body the door opening at the body line that runs down the side.:shocked:

Ooops, that got me dreaming about a CF tub style VW chassis that you just bolt a body too...

Jason

DORIGTT December 5th 2007 13:32

Have you considered making it a 'unibody' by stitch welding the pan and body together to make it a more unified & solid structure?

I read an article by a Spitfire racer who did it which resulted in remarkable increases in torsional rigidity.

volkdent December 5th 2007 14:38

It might help some, but the trouble is the actual body panels aren't good at dealing with the loads. Welding a weak chassis you still have a weak chassis, with stress risers appearing in new and exiting areas!! I think a tubular chassis is the way to go, so I'll probably head down that route, I just don't like adding weight!

Jason

helowrench December 10th 2007 16:39

you might look into adding the vert stiffening panels.
not just the frame rail stiffeners, look for the ones that go into the front of the footwells.

Thare are also some in the package area, but your 1.8T is there, so that is probably a no-go.

I have yet to find a comprehensive listing for all of the additional stiffeners that were added into the verts, but I am still looking.

Rob

volkdent December 10th 2007 22:14

Thanks Rob, keep me posted!

Jason

speedy December 27th 2007 18:00

hi jason , i saw the vid,impresive wheel spins, the engine sounds sweet:D
i am off to france for a month starting the 5th of jan so should be on here on a night keeping you up to date with my adventures and of course keeping track of your project seems it is now rolling :D
till then
jon

volkdent December 30th 2007 20:14

Man, France for a month? That's a long time away from Helen, more job than you want maybe? I've got the perfect gift lined up for you guys, apparently it will have to wait until Feb. to be used. Thanks for the Xmas goodies, you know my weakness for chocolate is terrible!

Here's a little compilation I made up, if I keep on doing this I'm going to need a bigger harddrive! I didn't know making videos was so easy or I would have done it a long time ago!

Bad Dub Racing Inc.

Panelfantastic December 30th 2007 20:46

Funny to look in the engine bay and not see anything!:lmao:

Bug@5speed(US) December 30th 2007 21:05

Very nice and congrats on getting it on the road..

Love the DM in the background.. Ah the memories of depeche mode from my days..
VR
Alex

volkdent January 30th 2008 00:27

I took her down for an alignment yesterday, and to my delight and surprise, the specs on the front and rear suspension are almost perfect! They were so close to perfect that the alignment guy actually told me how impressed he was with how well built it was. I was really concerned that I'd be off quite a bit, I'm not a fabricator, so I thought the rear end might be way off, but I guess I did OK.

It's just a temporary thing so I can drive it around without worrying about wearing the tires poorly and it feeling twitchy. The alignment specs are for the car in a static position, but in April it will be going to www.huffakerengineering.com to have the geometry gone through during bump and droop to decide whether or not the rear will need to be rebuilt and what will really make this thing handle awesome.

Jason

Pablo February 22nd 2008 17:28

There is a company in the UK here producing something along the lines of you guys.

I seen it at our 1st Vdub get together last w/e. Have a look on there website Here

Sandeep February 23rd 2008 10:22

A very sweet unit indeed.

Sandeep

volkdent February 23rd 2008 12:37

Awesome to see someone else heading the A-arm route!!! I'm thinking that is an early prototype though, it's got some SERIOUS issues. For example, they've got the input shaft for the steering rack on the wrong side!!!;)

Joking aside, I do wonder about a few of things, the inner tie rods angle, the lack of adjustability beside the stock eccentric, they've not shown the parts to connect it to the steering column(which is a challenge itself!), the cups for the top balljoints are going to fill with water and debris and become a rust nightmare-especially in the UK, and the rear cross brace is made of flat plate, which isn't up for the loads of that position and isn't anywhere as strong as simple tubing, but weighs more.

I'm just excited some more development is being made in this direction, eventually we are all going to end up with a low weight, relatively low cost, high strength option to get away from trailing arm front ends!

Here's what's available for purchase on our side of the pond:

Eyeball-Engineering

Jason

volky68 March 3rd 2008 23:47

Is anybody running this on a GL right now?

volkdent March 4th 2008 16:57

I am.

Jason


All times are GMT -4. The time now is 04:13.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
© www.GermanLook.net 2002-2017. All Rights Reserved