You dont see one of these every day of the week.

[stuart]

NOS Stanpart 4a Chassis. http://www.ebay.co.uk/itm/TRIUMPH-TR4A-NOS-STANPART-ORIGINAL-CHASSIS-/172366005424?&_trksid=p2056016.l4276

Stuart.

[Britishbest]

Blimey that's rare. Will solve someone's headache I'm sure but not cheaply.

[Bulatovic]

I guess in terms of originality, yes. But for the price, i'd go with reinforced CTM every time...

[boxofbits]

Would be ideal for somebody in the business as a jig for checking/ repairing existing chassis and manufacturing new reproductions.

 

I'm sure it would soon earn more money than its purchase price.

[Geko]

Would be ideal for somebody in the business as a jig for checking/ repairing existing chassis and manufacturing new reproductions.

 

I'm sure it would soon earn more money than its purchase price

 

Or maybe something the Spare Parts Development Fund could invest in ?

Edited October 11, 2016 by Geko

[RogerH]

Hi Stef,

it would be out of the area of concern for the SDF as there are equally good parts available on the market.

And then you have to store it. Have you seen the cost of storage these days.

 

The SDF are mainly concerned if there are show stoppers, no parts available etc.

 

Roger

[Geko]

Hi Roger, I was thinking about keeping it as a template/blueprint for whomever wants to restore a chassis and get the right specs and dimensions as some measurement are missing in the schematic in the workshop manual.

[ianc]

When I was the club's Technical Editor, I started to receive reports of collapse of front suspension on TR4As in the mid-late 1970s.

Anyone using an original TR4A chassis will be asking for the front suspension, rear suspension and differential to collapse after some years of use.

Far better to purchase a chassis from CTM, knowing that all of these issues have been addressed properly.

Expensive paperweight at £4500.

Ian Cornish

[RogerH]

Hi Ian,

I am tempted. The CTM chassis is very good but its price would not be much different to the ebay offering.

Easy enough to do the strengthening.

 

I'm sure the price would not drop and easily rise.

 

Roger

[Alec Pringle]

" Anyone using an original TR4A chassis will be asking for the front suspension, rear suspension and differential to collapse after some years of use. "

 

Why ?

 

The inadequacies of the original mounts became apparent soon enough, which is why the IRS chassis was evolved and subsequent strengthening instructions issued for the earlier TR4As.

 

There was nothing wrong in principle with the chassis design, simply the mountings and a more-or-less complete lack of corrosion proofing . . . . .

 

So after 5 or 6 years of normal useage the mounts started to give way . . . . . and required repair.

 

Presumably anyone purchasing a new IRS chassis will be attending to strengthening of the mounts and rustproofing the chassis inside and out ?

 

So where then does the problem lie ?

 

Cheers

 

Alec

[Alec Pringle]

" Or maybe something the Spare Parts Development Fund could invest in ? "

 

That option was considered several years ago, when the V8 Lady decided to sell her nos 4A chassis (owned since the late 1970s!) - the SDF had first refusal, as it were.

 

The conclusion was that such a bulky item was not necessary - all the relevant dimensions are available, and reproduction chassis are available to OE quality or better. Reproducing any TR chassis is never going to be a problem. Meanwhile SDF funds and storage are both limited, so it's appropriate to prioritise nos 'pattern stock' requirement rather than acquiring stuff for the sake of it.

 

Presumably in the future the SDF role might be more one of facilitating the 3D scanning of nos OE component as a means of preserving originals for reproduction in digital rather than physical form ? Why hold a storeroom full of parts if the necessary data can be stored on a disc . . . . . ?

 

Cheers

 

Alec

[stillp]

 

Presumably in the future the SDF role might be more one of facilitating the 3D scanning of nos OE component as a means of preserving originals for reproduction in digital rather than physical form ? Why hold a storeroom full of parts if the necessary data can be stored on a disc . . . . . ?

 

Good point Alec. That would also facilitate 3D printing for those parts for which it is suitable. Rear hardtop frame comes to mind, bit I'm sure there are plenty of parts that could be 3D printed.

 

Pete

[Don H.]

...Presumably in the future the SDF role might be more one of facilitating the 3D scanning of nos OE component as a means of preserving originals for reproduction in digital rather than physical form ? Why hold a storeroom full of parts if the necessary data can be stored on a disc . . . . . ?

 

 

That's a fantastic idea, Alec!

 

IIRC, the Bugatti Trust has a similar project well advanced. There are companies offering the sophisticated scanning as a service, so clearly the technology is there.