Norton Model 7 Dommie build - in polychromatic blue

All Nortons had the sprocket and the brake drum cast together from the early 1930s up until the Mk3 850 (when they went to a disk rear brake).
There is really nothing to mill down to attach a sprocket to.
The brake shoes run on the drum underneath, so that can't be shortened in any manner.

'Rebanding' is machining off the remains of the sprocket, and brazing a new sprocket on.
Quite commonly done in the good old days.
Correctly done (cooled out), the drum doesn't get hard spots or go brittle.
Getting it perfectly aligned and centred can be a little tricky though.

New drums, at the moment, are rather conspicuous by their absence.
Plenty of Commando and later dommie styles to choose from - but they are rather different.
Cheers.
 
The back axle out of this wheel was a little bent - which is putting it mildly.
Can it be straightened ?

And does anyone know why this has a different part number to an ES2 etc plunger axle ?
That would seem to signify that it has different measurements somewhere..

Norton Model 7 Dommie build - in polychromatic blue
 
Re; “Can it be straightened?”

If you are very desperate, yes.
A couple of “V” blocks and a clock gauge with a manual fly press, then there is no reason you cannot get it within .002” inch like bent fork legs, as long as there is no kinks/creases in metal. The fly press will as likely as not crack that ci wheel spacer :!:
 
The central spacer on the axle is actually steel - same metal as the axles.
Looks like it was all cast as one bit, and the axles machined down.

I'm not that keen to use it after being straightened, but its hard to find another one, so far.
Might be display only...
 
Hi Rohan,

The long roadholder forks with the internal springs are most likely Nomad items. The Nomads used alloy dampers and a large spacer, they were nearer in design to the 500T than the featherbed versions. At the top end of the spring was fitted a 1 3/8 distance piece. The fork stanchion length was longer than the featherbed frame versions. Model 7 1949 to 1955 have 11 3/4 fork spring lengths, and these were supplied to a tolerance of plus or minus 0.125. As the Nomad was built for off road use then all the components fitted to the Nomad would have been made much stronger to deal with the bike being used this way, hence the need for much stronger components to be fitted.

I have a set, but would be interested in them if they are for sale.

Skip
 
skipsoldbikes said:
As the Nomad was built for off road use then all the components fitted to the Nomad would have been made much stronger to deal with the bike being used this way, hence the need for much stronger components to be fitted.

How are these in any way 'stronger' than stock Model 7 components ?
You need to back up wild sweeping claims like this with some evidence for this statement ?

Now Manx forks had FORGED alloy sliders, and HI-TENSILE steel (short short) fork tubes.
And are uber expensive compared to roadgoing stuff.
Neither of which are in evidence with this set of forks.
Nor in anything Nomad I've seen mention of ?

Cheers.
 
Hi Guys, I am not do not mean to hijack this thread but I am interested to know how many owners of swing arm Model 7's have experienced frame breakage around where the swingarm mount lug is fitted in the rear frame down tube. My story is that about 3 years ago I picked up a 1954 model 7 that had been somebody's unfinished project.
Norton Model 7 Dommie build - in polychromatic blue

Norton Model 7 Dommie build - in polychromatic blue

Due to other projects it took me some time to get around to making it go but something did not look right as the rear wheel looked canted and off to one side, closer inspection revealed a that a crude repear had been to the left lug though the alignment was not correct and it appeared that left side of the frame was 10mm lower than the right below the gearbox [ I have since spoken to other owners of model 7 and ES2 that have had a similar breakage], it has taken sometime to locate a repearer that I was confident could handle the repear. Several months ago I was referred to Terry a person I had distantly known for many years in the local bike scene. Once I had spoken to him and shown him the problem I felt I had the right man for the job as yes he had a frame jig and had made several frames for his own Race bikes. so next I had to strip a perfectly good bike down to the bare frame but final results have been worth it.
Norton Model 7 Dommie build - in polychromatic blue

Norton Model 7 Dommie build - in polychromatic blue

Norton Model 7 Dommie build - in polychromatic blue

Not only was the frame out as previously described but Terry also identified that the downtube had been bent forward so that the point of the axle was to the left 30mm
Now that I have a good frame to work with do I throw it back together or do I restore it properly?
Al
 
I can add a broken swingarm frame to your list.
As well as the frame for this plunger frame build here !
Slowed this project down somewhat.
More on this shortly....

Norton brazed/lugged frames often cracked, when you talk to older/previous owners and restorers.
It has been suggested they were too heavy and rigid for their own good ?
The seemingly more lightly built AMC frames (of the same era) apparently had fewer breakages.
A bit lighter and more flexible = fewer breakages ??
 
possm said:
Hi Guys, Now that I have a good frame to work with do I throw it back together or do I restore it properly? Al
Well possm judging from you past build threads (outstanding attention to detail) I vote restore it properly, but it's easy for me to spend your time and money :) either way, nice bike already made better since you've had it. Cheers
 
Do you have a bike that isn't restored?
One for those rainy muddy days that won't take days to clean?
One that you don't have to worry about?

Graeme
 
Like a Kawasaki, Onda, BMW, Ducati, etc.... ?

Meanwhile, back to my build thread...
 
This is probably the primary reason this build was able to be undertaken, with a fair measure of 'originality' for the final result.

A stash of Nortons satin chromed nuts and bolts and fasteners, all done in satin chrome, for Model 7 Nortons.
Some new, some used, some redone, some grungy.
Several bikes worth, in fact. At quite reasonable cost....

Probably not one 'standard' fastener in the whole lot - all of them are Norton specials, to a smaller and larger extent.
Did Nortons make them themselves, and plate them - or buy them in from somewhere - anyone know ??

P.S. Try finding all of these from modern sources...
Norton Model 7 Dommie build - in polychromatic blue


Some updates - a gearbox was sourced from fleabay.
Needs a rebuild, of course, so borrowed one from another project.
Slotted screws show signs of some applied muscle ... !
Not that easy to source new either.
Norton Model 7 Dommie build - in polychromatic blue


The elusive head steady.
Seems to be a demand for these, might have a few spares made up, although they are only a tube flattened at each end.

Norton Model 7 Dommie build - in polychromatic blue


Seats for Nortons present a bit of a problem.
No-one makes the myriad of different types and sizes to suit all the earlier models, (?)
so a universal fitment type needs to be adapted these days .
Unless anyone knows a stash of old seats someplace ?

Norton Model 7 Dommie build - in polychromatic blue

Norton Model 7 Dommie build - in polychromatic blue


The bracket shown needs to be rivetted to the nose of the seat, to connect to the front mount on the frame under the tank.
This gives the l-o-n-g pivotted action that gives a comfortable sprung ride.
The other note with universal fitment seats is that the pair of springs under the back of the seat need to be 9 inches apart, to suit the frame brackets.
For whatever reason, the seat frame comes predrilled with 3 sets of holes either side, but none of them pair to be 9 " !!
A bit of reinforcement may be in order here, too many holes may weaken the whole plot.
Perhaps not a concern on smooth roads these days, back back when roads were rough, this would soon have been sorted out.
And you often see old seats in less than perfct condition, so they obviously had a rough time...

The stays for the lifting handles for the rear mudguard presented a bit of a problem too.
They are available on fleabay from India. But are not right.
The local fabrication guru made me some up - they are part curved, in several directions,
so I supplied some rijjinal ones and some measurements, and he made up jigs and fabbed them up.
Neat work. (pic to follow).
The 4 sets of rear guards I have seen/measured were all slightly different in measurements,
so it would seem that they have to be made up to suit the measurements of each individual guard.
Makes mass producing them a tricky prospect...

Exhausts are the next bit to consider.
Armours sells "Model 7" pipes and mufflers.
But the pipes jut forward, quite a bit, and the mufflers are more like Matchless ones.

Found a genuine pair of pipes, rather scrappy, but still with the original sweet curve downwards and outwards from the exhaust port,
not that jutting forward style.

Norton Model 7 Dommie build - in polychromatic blue

Now, to find someone to make some up from these as patterns.
One of the stainless guys seems to know what he is on about.
And, he flash chromes them too, for that genuine chromed look...
Don't know why someone has welded small extensions to these ones ??

Spotted along the way.
Just for interest.
Not quite standard there !!

Norton Model 7 Dommie build - in polychromatic blue


A local stainless merchant does covers for the plunger suspension springs at the back.
With a flash of chrome to make them look more authentic.
Hopefully should never rust.
Coat of blue and they look like they grew there.
They are a shade tight over the springs though, we shall see...

Norton Model 7 Dommie build - in polychromatic blue


A pair of plunger shafts for the back suspension turned up.
Not so easy to find these days, although whole sets turn up now and then.
(Do folks remove them from the frame, and then never refit them ?).
A little rusty looking, just need a clean and polish.

Norton Model 7 Dommie build - in polychromatic blue


Someone did a batch of front stays for the front guard.
That tight bend at the end is a little tricky to do well.
No adjustment for length possible though, so we hope they got it right.
The 26 tpi cycle thread nuts are correct, always a good sign...

Norton Model 7 Dommie build - in polychromatic blue


Another one spotted along the way.
http://www.ebay.co.uk/itm/1950-NORTON-D ... 1492607066
Few departures from stock there, and a lot of poonds starling... ?

Polychromatic blue dommies coming out of the woodwork.
This one is noted in Hemmings, described as a 1953.
Looks more 1954 with that front brake and headlamp...
Featherbed of course.
Poly blue was listed as an option from early in the 1950s, it seems.

http://assets.blog.hemmings.com/wp-cont ... 00x446.jpg
 
Do you have one ?
Tell us more.

I've been updating the post above, quite recently too.
Progress has been a bit slow, and I have a bit of a logistical problem.
If its assembled, I don't have anywhere to park it, the garage is full.
Well and truly full...
Engine assembly has been a leisurely affair too, find where I stashed bits..
(Progress on the ES2, and a couple of others has been humming along though)

Couple of cables received recently.
Norton Model 7 Dommie build - in polychromatic blue

I've been contemplating fitting Nortons higher 'western bars', so the cables need to be a bit longer than stock cables.
Figured I can jump them all to a longer length by using a longer universal cable (shown lower) and transferring all the fittings across.
Bread tags are simply to remind me which is what - bought a cable quite a while back, and still can't figure what it is for...
 
No model 7 yet...but the one in Menorca looks appealing. So I'm gathering as much info as I can....

I've got a 1953/4 ES2 in Wedgwood Blue, and a 74 Dunstall (work in process).

The Poly Blue is a wonderful color, and I hope you keep yours that way. I saw the picture of the Blue 88 that is floating around California somewhere.
 

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marathonpaul said:
The Poly Blue is a wonderful color, and I hope you keep yours that way.
I saw the picture of the Blue 88 that is floating around California somewhere.

Great to see another Norton in colour. !
Don't worry, I intend to finish this in poly blue, have a couple of other dommies in the works,
so they can be more traditional finish, if black'n'chrome fever takes hold....
 
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