Classic cars forum & vehicle restoration.

DM · Joined: 21 Dec 2008 Posts: 214 Location: North Cornwall

Hi,

I'm looking for any information on 500cc Excelsior J.A.P machines. In particular 1932 Senior TT machines.

I have this bike, with a works experimental frame number and a 1931 JOR racing engine .

I have only found one picture (below) with my frame configuration and think my bike may be the one that Syd Crabtree rode.

Dennis

the fly · Joined: 11 Jul 2008 Posts: 95

Hello D M nice bit of history cant find any pics i will keep looking as time permits. Have you any of the rear frame . some of the early speedway JAPS had a left hand inlet port .a friend of mine had a B 14 in the 1950s if a photograph of it still exists and would be of any help i can contact him . Regards The Fly

DM · Joined: 21 Dec 2008 Posts: 214 Location: North Cornwall

Hi,

Unfortunately I don't have the rear frame, when I got the bike in Apr 06 it had the rear from a Triumph crudely brazed on.
Since acquiring the bike I have been collectng any Excelsior info or pics that I could lay my hands on. I have pictures of 1931,32,33 and 34 Senior TT bikes,B14,C14 and Manxman. Only one pic shows my frame configuration which is the bike Syd Crabtree rode in 1932.

DM

Nic Jarman · Posted: Sun Jan 25, 2009 1:06 am Post subject:

Hi DM, looks like a Manxman frame with a 490cc engine. Unusual to put the gearbox behind the rear down tube.

DM · Joined: 21 Dec 2008 Posts: 214 Location: North Cornwall

Hi Nic,

I'm told that a 1935/36 Manxman frame is very similar to what I need, the main difference being that the top rail tubes are longer.

I would love to get hold of drawings for the manxman frame, or pick up a frame I could copy the lugs from.

Here's a pic of the rear section of a 1933 C14 which again is very similar.

DM

Nic Jarman · Posted: Sun Jan 25, 2009 8:54 pm Post subject:

Hi DM, I found this photo of a Manxman. I think the forks are from a 250 as the 500 forks are a lot heavier. Hope this of some use to you.

Regards Nic

Rick · Site Admin Joined: 27 Apr 2005 Posts: 22838 Location: UK

Hi DM, thanks again for the info on the recent Excelsior photo. I'd forgotten about this thread until I stumbled across it via Google - how's the project coming along?

PS I assume you've seen the photo on this page of the site also?
http://www.oldclassiccar.co.uk/excelsior-motorcycle.htm

RJ
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DM · Joined: 21 Dec 2008 Posts: 214 Location: North Cornwall

I was short of space so the project stalled for a while as my tools were in storage while I built myself a new garage, but I have been collecting more info on Excelsiors.

Now it's stalled while I do some building work to the house.

Yes I saw the other Excelsior pic, and posted that it looked to be a B14.

Mog · Joined: 30 Dec 2007 Posts: 663 Location: Sydney

For a J.A.P. engine or help try http://cameronracingengines.com

DM · Joined: 21 Dec 2008 Posts: 214 Location: North Cornwall

Called in there and spoke to Ewan Cameron last year, so will have to speak to him again re parts for the engine.

Meanwhile I am getting the front frame and Webb racing forks completely re-tubed.

Mog · Joined: 30 Dec 2007 Posts: 663 Location: Sydney

I went to school with his old man, Tim.