Club 80-90 Forums

syncropaddy wrote:

jed the spread wrote:I though you were supposed to rotate your spare too, thats why its good to use a set of 6 tyres?

jed

Well not in the case of a Syncro. VW are clear enough when it comes to that by printing a wee diagram!

But yes, a six wheel rotation is ideal for a Syncro and I have 6 BFG MTs on Mefros for that very reason

Maybe its because nobody could afford 2 VW rear wheel carriers back in the day that they left that bit out the diagram

jed

Cant find it at the moment, but i remember seeing a picture of VW warning sticker in someones van saying that rolling circumferences must not differ by more than 2mm.

Yellow sticker, somewhere in the cab if memory serves me correctly... anyone know the pic i'm on about?

v-lux wrote:Cant find it at the moment, but i remember seeing a picture of VW warning sticker in someones van saying that rolling circumferences must not differ by more than 2mm.

Yellow sticker, somewhere in the cab if memory serves me correctly... anyone know the pic i'm on about?

Kin'nerd

jed

Kin'nerd

Need i mention Westfalia cupboard latch/handle positioning Jed...?
Call me a nerd....!

Diff would only take out side to side speed difference, the vc would see the speed difference front to back.. even 667mm diameter would produce a 22 revs per mile difference.. doesnt sound much I know, but whenthe vc is already compensating for load/pressures turning.. I reckon it would add to the stress... Might get away with it on a brand new VC, but not a "used one"... certainly my VC wouldnt like it...

Go on then Andrew you try it and tell us how stiff the vc goes after a few miles...

dont know if this is any good...you need a bull bar and a good fabricator with a welder







off road wheels wont fit in to the cradle if you have it made to fit 14inch standard wheels

This is done by the differential and a % slip in the VC.

that'll be equiv to 6mm then

VW did quote 2mm max diff in the technical literature for the Syncro

I think that's quite conservative (having run with enormous differences and VC touch wood still OK) , but that figure was indeed quoted, in the same document mention was made of braking distances being smaller than the 2WD as well as economy being no worse or even better then the 2WD due to less slip on average road surfaces (Porsche have also suggested this compensates for other 4WD drag factors)

.. and spare wheel stowage is one of the Syncros biggest achilles heels IMHO. At high speed I wouldn't like the front spare on a diesel, though maybe the TDis could be ok, know anyone tried that.. a reasonable gap between spare and grille might be better than right up tight - air does funny things!

The PO of my van used to secure the spare onto the front with a couple of long 'J-bolts' hooked thru' the grille and rotated to engage with the front panel. He did Iceland with the spare like this without any problems. The wheel was mounted like this when I collected the van from him! Didn't like it meself so I took it off. Swing-out rear carrier is on the wish list now.

v-lux wrote:

Kin'nerd

Need i mention Westfalia cupboard latch/handle positioning Jed...?
Call me a nerd....!

OH DEAR!!!!

jed

HarryMann wrote:

This is done by the differential and a % slip in the VC.

that'll be equiv to 6mm then

VW did quote 2mm max diff in the technical literature for the Syncro

I have a copy of the VW technical literature from 1988 and there is no mention of 2mm. Have you got a better / more recent copy?

Andrew, It would be a big dig to find it I think (plenty of other big digital and paper digs on the list too!)

But I've seen it several times, and believe it (or an early estimation of maximum I/O differential rpm) is also in the SAE paper I have by Dr Pesche, who researched the Ferguson/Rolt/GKN patents VW bought and then developed their version of it.

In retrospect, if vehicle prep hadn't been a pressing concern, I perhaps should have produced a History of the VC display for the event.

At the top of course would have been a picture of Tony Rolt, crouched in the loft of Colditz Castle (Oflag IV-c), designing the escape glider

terryvanman wrote: off road wheels wont fit in to the cradle if you have it made to fit 14inch standard wheels

Makes a change from the usual Chelsea Tractors Looks somewhere like Harley Street...
Terry you really should post up some more pictures of this wagon, for those of us who haven't seen it before.
What a beauty What extra equipment does it have onboard btw? The side panel looks pretty busy...

it's no longer Terry's
it was BCE's but I think he sold it, or was thinking he'd have to.....

silverbullet wrote:

terryvanman wrote: off road wheels wont fit in to the cradle if you have it made to fit 14inch standard wheels

Makes a change from the usual Chelsea Tractors Looks somewhere like Harley Street...
Terry you really should post up some more pictures of this wagon, for those of us who haven't seen it before.
What a beauty What extra equipment does it have onboard btw? The side panel looks pretty busy...

it's in Chelsea...well kensington actually...tis all the same full of 4X4's and dopey drivers,,,,,,,,,,me included