Organizing a Featherbed project

Matt Spencer · Oct 25, 2022

A Manx Combat Commando from the U S , early 70s . DONT forget the STEERING HEAD BRACE . A Good One .

Keep it simple . and Id say 'period '. Not the fancey c n c space ship ancillarys . Bar a KROBER impulse tach .

But whatchit , theres differnt rpm 's . like more . unneeded .

Anif yerwant the motor right forward and the gearbox right back , The Ridgid Triumph Chaincase isa the go .

Being longer , like .

Er Actually , I think it was Steve Lancefield PATENTED the non vertical engine . So the Vibes dont go through your teeth .
With it angled forward , as per Commando , The VERTICAL component is not vertical , and thuss better dissapated ! .

robs ss · Oct 26, 2022

Matt Spencer said:
Er Actually , I think it was Steve Lancefield PATENTED the non vertical engine . So the Vibes dont go through your teeth .

unlikely - there have been masses of "non-verticals" - he should have sued Panther!

Matt Spencer said:
With it angled forward , as per Commando , The VERTICAL component is not vertical , and thuss better dissapated ! .

even more unlikely - that's why they didn't need isolastics then.

Chris · Oct 26, 2022

Dudley Ward Matt. I have that same engine in a Triton. The bulge in the Triumph timing cover is a Norton oil pump. The engine was built by a friend who worked at Monty Ward. It has Geoff Montys cams & inlet manifold. My other Triton has a Dudley Ward big valve cylinder head. Clever engineers & good racers.

acotrel · Oct 31, 2022

robs ss said:
unlikely - there have been masses of "non-verticals" - he should have sued Panther!

even more unlikely - that's why they didn't need isolastics then.

My motor is rigidly mounted as was the Atlas

Bernhard · Nov 11, 2022

Fritzer_108 said:
Hi there,

I am new to Norton's and picked up a featherbed project yesterday and need some help identifying what is what.

I looked up a table with Norton serial codes and was able to identify most of the parts that came with the bike, but I am not sure what the gearbox as well as one of the engine cases are from.

The frame code is 122-51259. The table I read said this should be a 1952 88 Dominator
The first engine code: 20-121920/P......this should be a 1967 Atlas P11, correct?
The second engine code I do not know how to read. I've attached a picture of it and would appreciate some help identifying it. Here is a link to the picture:

The gearbox has the following code: GT101745. Again, I do not know what this is from.

The bike is very very incomplete and was most likely a candidate for a Triton build (also came with a 650cc unit Bonneville engine). I am very familiar with Triumphs, but not Nortons, so any resources would be appreciated. Are most parts interchangeable between models?

Looking at that engine crankcase, it definitely isn't a 750 as they have a breather pipe elbow coming from the timed breather off end of the camshaft.

Organizing a Featherbed project

Matt Spencer

robs ss

Chris

acotrel

Bernhard

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