| [ Total Views: 760 | Total Replies: 9 | Thread Id: 41934 ] |
|
|
 Dasdubber
A.k.a.: Alan Agyik
23 Windows of Awesome
DAS Resto Haus
Posts: 5746
Threads: 289
Registered: August 26th, 2002
Member Is Offline
Location: Gold Coast
Theme: UltimaBB Pro Blue
Mood: feeling fine...
|
| posted on July 20th, 2005 at 01:43 PM |
|
|
Swing Axle rear wheel tuck - food for thought?
I was trolling through some Chev Corvair stuff for my old man and came across this bit of info about eliminating the dreaded rear wheel tuck during
cornering on the swing axle corvairs (same principles as s/a VWs).
They use a 'secondary spring' (as they already have a big primary spring instead of torsion bars like our vws) to counteract the tuck to a degree.
Camber compensators are not new to them either, but just got me thinking if anyone has considered this approach for vws before?
Here is the link:
http://autoxer.skiblack.com/em_rear.html
Any thoughts?
Here is a pic of the 'secondary spring' used to help keep the axle from dropping when cornering - without overpowering the primary spring.
 nn[ Edited on 20-7-2005 by Dasdubber ]
|
|
|
MikeM
Custom Title Time!
Buggy Head
Posts: 1429
Threads: 71
Registered: August 7th, 2003
Member Is Offline
Location: Brisbane North Side
Theme: UltimaBB Pro Blue ( Default )
Mood: :duh
|
| posted on July 20th, 2005 at 02:16 PM |
|
|
Couldn't a limiting strap do the same thing? and look less dodgy?
|
|
|
56astro
Custom Title Time!
Posts: 1772
Threads: 74
Registered: August 25th, 2002
Member Is Offline
Location: The Nambucca
Theme: UltimaBB Pro Blue ( Default )
Mood: Pobjoy Powered with twin ignition & soon to be EFI'd
|
| posted on July 20th, 2005 at 02:39 PM |
|
|
Some of the later swing axled cars had a Z-bar, sort of a anti-sway bar but different. These Z-bars had to be pre-loaded to work really
effectively.
I think you may need a spring a bit more substantial than a trampoline spring!
VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa |
|
|
Kombi_Rescue
Wolfsburg Wizard
Posts: 440
Threads: 35
Registered: February 26th, 2005
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
Mood: DSK member
|
| posted on July 20th, 2005 at 02:41 PM |
|
|
looks like it drove thru a roller garage door and a bit of debry wound itself over the rear axle...corvair drivers should be more careful! cheers
steve
|
|
|
HotRodMatt
Wolfsburg Elder
If it's old or rare - cut it!
Posts: 3616
Threads: 361
Registered: September 3rd, 2002
Member Is Offline
Location: West of Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on July 20th, 2005 at 02:41 PM |
|
|
The z bars were pretty horrible.
I'm sure a modicum of thought and some rod dending would make a betetr design than the factory Zs.
The spring looks pretty dodgy. I'm sure a better soultion is available.
|
|
|
MikeM
Custom Title Time!
Buggy Head
Posts: 1429
Threads: 71
Registered: August 7th, 2003
Member Is Offline
Location: Brisbane North Side
Theme: UltimaBB Pro Blue ( Default )
Mood: :duh
|
| posted on July 20th, 2005 at 02:51 PM |
|
|
| Quote: | Originally
posted by HotRodMatt
The spring looks pretty dodgy. I'm sure a better soultion is available.
|
Yeah. IRS.
|
|
|
Kombi_Rescue
Wolfsburg Wizard
Posts: 440
Threads: 35
Registered: February 26th, 2005
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
Mood: DSK member
|
| posted on July 20th, 2005 at 02:59 PM |
|
|
56 astro the rear Z bar on later swing axles are actually a torsion bar. VW softened the rear torsion bars in the 1500 type bug to gain a smoother
ride but with it came the bottoming out affect,ie not enough control over the softer bar..vw fitted this Z cofigeration so as to help stop bottoming
and giving the std torsion bar a little helping hand when fully loaded...hope this makes sense...ever noticed higher mileage late swing axle bug are
a bit droopy in the tail...the torsion bar sags early because of the smaller dia....early ovals nearly always look pos cambered due to the thicker
torsion used ...ovals always ride harder than a 1500 for example..progress for you !cheers steve
|
|
|
Dasdubber
A.k.a.: Alan Agyik
23 Windows of Awesome
DAS Resto Haus
Posts: 5746
Threads: 289
Registered: August 26th, 2002
Member Is Offline
Location: Gold Coast
Theme: UltimaBB Pro Blue
Mood: feeling fine...
|
| posted on July 20th, 2005 at 04:46 PM |
|
|
Yeah the spring above is dodgy - just more the principle I guess warranted some discussion. I have heard of a limiting strap used for the front but
haven't seen ones used in the rear - any pics?
The one thing I have seen done is a steel block (small) welded to the chassis where the spring plate sits - this block therefore provides a "bump
stop" so to speak to limit downward travel of the spring plate.
Don't know if it works either - welding is kinda hard to undo if it is crap.
The info about the 1500 torsion bars is good - didn't realise that!
|
|
|
56astro
Custom Title Time!
Posts: 1772
Threads: 74
Registered: August 25th, 2002
Member Is Offline
Location: The Nambucca
Theme: UltimaBB Pro Blue ( Default )
Mood: Pobjoy Powered with twin ignition & soon to be EFI'd
|
| posted on July 20th, 2005 at 06:23 PM |
|
|
| Quote: | Originally
posted by Dasdubber
Yeah the spring above is dodgy - just more the principle I guess warranted some discussion. I have heard of a limiting strap used for the front but
haven't seen ones used in the rear - any pics?
|
I have a feeling that a car that Wayne Penrose used to hill climb was a swinger with straps
VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa
|
|
|
tassupervee
A.k.a.: Knob Jockey
Custom Title Time!
That really hurts doesnt it!
Posts: 1171
Threads: 25
Registered: September 21st, 2003
Member Is Offline
Location: Huon Valley SouthernTasmania
Theme: UltimaBB Psyche Blue
Mood: Moody!
|
| posted on July 20th, 2005 at 07:28 PM |
|
|
Just as an aside:
Every Formula Vee running uses a "droop limiter", "camber cable" or whatever else people like to call it to control rear suspension droop.
Its an integral and critical part of tuning the rear suspension of an F-Vee and mostly comes in the form of an adjustable cable, that can be shortened
with a turnbuckle and sometimes a mechanical stop on a mono-shock type of rear suspension.
L8tr
E
Im not a complete idiot, quite a few parts are missing....
|
|
|
.JPG "Avatar")
