Thread: Air-springs fitting issue & notice

Got me curious now... I have a few sets of Arnott Gen III's for RRC here. I'll grab a set out tomorrow and compare to your measurements.

Never had a problem with these on P38's so I hope your problems are not with Gen III's.
Cheers, Paul.

Yes, please do, I'm curious to see if mine are a once-off, or ......

Crawl under a Classic and see how thick that axle mounting plate is.... maybe they vary in thickness over differant models.

Maybe someone more experienced or stronger fingers might have gotten something in

Correct me if I'm wrong, but is there any good reason why those bottom pins cannot be manufactured as studs ?

Or just longer pins with a drilled hole and one of those funny-looking springy wire thingies... Nice and easy.

Cheers,
James, still awake in Perth

I changed all the bags on my 94 LSE last year and yes, the retaining clips are a real bugger. I only went for new bladders and retained the rest of the original assemblies. But even so, I lost a few clips when they sproinged off into the great blue yonder never to be found again and had to scavenge some replacements. Not the world's greatest example of industrial design.

(Suitable pirate-type accent....)

"Ah, Oi be smart... 'an cunning in me Old Age... read summat 'ere 'bout bloke wot lost little clippies just loike youse did... so Oi bought 16 noo wuns from nice fellas wheres Oi got me noo shockies frum... Only cost me 30 pence each..."

Broke a couple, lost some, filed one down to oblivion... but still in front!

Excellent service from the company (I reckon everyone knows "who" ) and the shipping was both cheap and ridiculously fast... but their design and measurement of these pins needs to be changed yesterday.

With the original bags/mounts, the clips go on pretty easily, especially if the wheel is off... but trying to force them on/into the temptingly visible groove was *NOT* my idea of fun last night.

A sleep on the problem...and building adhesive is starting to look good...

Maybe a tiny hole drilled and tapped vertically down the pin, and a cupped spring washer bolted onto it.

The pins are aluminium, along with the base (obviously!) and I have'nt had a close enough look to see if they're a stand-alone item and pressed/screwed in.... or if its all machined out of a single piece of metal, pins included!

- I'm beginning to suspect the latter, as this company proudly boasts of having the Latest & Greatest in Leading-Edge Technology....

Seriously, any Engineers out there who would know whether the stresses & strains on the base-to-axle would be more than a modern adhesive could stand ???

Frustrated James in Perth

I also get just under 5mm for a brand new Arnott Gen3 front (for RRC)


or 3/16" in imperial terms


and next to a P38 Gen3 for comparison

... Its the bottom pins that are the problem at my end, the top clips went on with a grunt and a shove....
Measure the pins underneath....

James from Perth.

Originally Posted by superquag

Measure the pins underneath....

still just under 5mm to the bottom of the channel where the clip goes.

This pic sums it up.... the plate that the pin pokes through is 5.57mm thick, and the pin channel starts at just under 5mm.....

Pics are, axle plate that the spring sits upon and pokes pins through...
New, improved Airspring bottom pin.
Original Dunlop bottom pin. Steel pin inserted into cast and machined plate.


Its looking like gluing the spring's baseplate to the mounting,,,, and using an oxy torch or whatever to bash it off when it comes time to replace it (with coils springs conversion......)

Any suggestions ?

Does the airspring *need* to be held securely to the plate?

Would a construction adhesive be sufficiently strong to do the job?

Any suggestions ???