Single Port pipe different to twin pipe mystery?

Singles, twins and fours.
Post Reply
Dave.Barkshire
Holder of a Silver Anorak
Holder of a Silver Anorak
Posts: 803
Joined: Thu Feb 24, 2011 3:33 pm
Location: Exmoor UK & Lamma Island HK
Contact:

Single Port pipe different to twin pipe mystery?

Post by Dave.Barkshire »

I'm trying to find a high level exhaust pipe for my single port pre war Ariel single.

My 1938 VH1 has a stub outer diameter which varies from 1.875” to 1.9” as it’s seen some life.

I’ve had a look at the 1938 singles parts book and it lists a different pipe for the single port VH compared with the twin port VH (RH side, listed as OS for off side). In the illustration it shows what looks like a sleeve at the end of the pipe for the single port (illustration is attached).

The Drags pipes are 1-3/4" on the outside diameter for the finned clamp and measure around 1.65" on the inside, so are quite a bit smaller.

Does this sound right? has anyone come up against this before? (I'm currently exchanging emails with Drags)
Ariel1938SinglePartsExhaust.jpg
User avatar
dave.owen
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 1628
Joined: Wed Mar 23, 2011 10:05 pm
Location: swindon
Contact:

Re: Single Port pipe different to twin pipe mystery?

Post by dave.owen »

Twin port 1 3/4" single port 2"
AOMCC Treasurer
User avatar
paul.jameson
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 2512
Joined: Wed Oct 12, 2011 3:04 pm
Location: Herefordshire
Contact:

Re: Single Port pipe different to twin pipe mystery?

Post by paul.jameson »

Yes Dave, that is correct. Ariel welded a larger diameter stub onto the pipe for the twin port head in order to cope with the larger diameter of the single port, shortening the twin port pipe accordingly. No doubt Armours would be happy to make one up for you. Single port heads were relatively uncommon for each of the Red Hunters pre war, but available to special order.
Paul Jameson
35 LG (project), 36 4G, 37 VH, 54 KH(A), 75 Healey 1000/4, 52/53 ex ISDT KHA (project).
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.
User avatar
dave.owen
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 1628
Joined: Wed Mar 23, 2011 10:05 pm
Location: swindon
Contact:

Re: Single Port pipe different to twin pipe mystery?

Post by dave.owen »

Single port upswept pipes were available for post war iron singles.they should fit prewar bikes
AOMCC Treasurer
Dave.Barkshire
Holder of a Silver Anorak
Holder of a Silver Anorak
Posts: 803
Joined: Thu Feb 24, 2011 3:33 pm
Location: Exmoor UK & Lamma Island HK
Contact:

Re: Single Port pipe different to twin pipe mystery?

Post by Dave.Barkshire »

Thanks Dave and Paul for clearing that up.
Dave.Barkshire
Holder of a Silver Anorak
Holder of a Silver Anorak
Posts: 803
Joined: Thu Feb 24, 2011 3:33 pm
Location: Exmoor UK & Lamma Island HK
Contact:

Re: Single Port pipe different to twin pipe mystery?

Post by Dave.Barkshire »

Follow-Up...

Armours do supply a special pipe for the 1938 VH1 but it's not shown on their site. The Exhaust Pipe is 1 ¾” with cup to push over 1 7/8” cylinder head stub. The stock number is ARMBK16, Price £84.

I have one on order.
Attachments
IMG_2793.jpg
IMG_2794.jpg
Post Reply

Who is online

Users browsing this forum: No registered users and 11 guests