405/406 Drake discs

[412usa]

Does anyone have a source for the 406 discs as used on later 405's with Dunlop calipers. I know it's a long shot but is there a cross

[Nick Challacombe]

I think these are the same as my 407 looking at the part numbers. They also fit an XK 120 and many early Jaguars.
Amongst other late 50’s and 60’s cars.
My parts are obtainable from Past Part in Bury St. Edmunds, Suffolk, UK.
4 Chase Road, Bury St. Edmunds, Suffolk, IP32 6NT
Email, restore@pastparts.co.UK
Www.past
Sorry web site PastParts
















Example Dunlop Rear Caliper rebuild and return £86.40

Hope this is useful they have supplied most spare parts for my 407.

[David C]

I believe BG developments in Bromsgrove have done these in the past. I knew the 406 shared callipers with some Jags but hadn't heard they also shared discs.
Please confirm when you know.

[412usa]

Hi Nick, Yes,I can get the calipers from the XK140 but I'm not sure if the diameter and offset od the discs themselves are the same as the Bristol. I can have the bolt holes drilled and even the diameter reduced but id the offset is wrong or the diameter is smaller then they won't work. Moss Motors in the US has the Jaguar Discs but shipping to Vancouver and then haveing to return then if they are wrong is a bit of a pain.

[Nick Challacombe]

Might I suggest that you email graeme.payne@cbcpc the newly set up Classic Bristol Car Parts Company who now hold all the stock of Bristol Spares that were with Bristol Cars and Graeme was parts manager at the now defunct Bristol Cars. Brian Marelli the fountain of all knowledge Bristol wise is helping out a couple of days a week.
I anyone know then they do, or know who to ask.
At least with email you should get a swift answer. The company was set up by members of the Bristol Owners Club with some very generous help I understand.
The front and rear discs on my 407 have 406 part numbers.
Kind regards,
Nick

[412usa]

Thanks Nick, I texted CBPC a few weeks ago. I know they are busy following the move but I will try an email.
Regards,

Peter

[Geoff Dowdle]

412USA,

I have two sets of 406 front discs fitted to my two 400s , one with Alloy Coopercraft 4 piston calipers, the other with Girling #17 cast iron Calipers.
Both work well compared to the standard drum brakes . A great safety feature driving a speed keeping up with today's traffic

Measurements of the 406 front Disc compared to a used/worn Britannia front disc

406 OD 11.25 inch , Britannia 10.875 inch
406 Offset 34mm , Britannia 28mm
406 thickness 13mm , Britannia estimated 13mm
Overall height when laid flat 406 47mm, Britannia 41mm

Brake Disc Rotors are available ex BG Developments/Bromsgrove UK HOME
406 Front BGD3993
406 Rear BGD4197
407 Front BGSD 121-10
409 Front BGSD 136-11B
411 Front BGSD 50-10
411 Rear BGSD 50-11

As you can see all the listed discs must have different dimensions .
I hope this helps .
Geoff

[412usa]

Thanks Geoff, Great information. I wrote to Moss Motors in the US to size the Discs they had for the XK140 but they are 12 inch Dia. 3/8 thickness and 2 inch offset

Regards,

Peter