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Messages - R

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British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 13, 2018, 10:33:44 PM »
Just hoping someone might know im missing the front chain sprocket off this 250cc its it has a keyway and shaft has thread on end and thats about as much as i know

Have you tried contacting Hitchcocks about this ?
They would be your best hope.
If they have a prewar parts list for an S, it will have a part number, and they can see if they have some, or the specs for having some made. And the nut to hold it on.

If they don't, engineering/agricultural shops keep sprocket blanks.
You'd have to measure the taper angle - they come often in std sizes, not as random as you'd think, and measure the chain size, and have something suitable made up. Agricultural places do this all the time, the price of original farming parts can be absolute murder, but cheap to make up.
The depth of the taper is the only tricky part, and the keyway depth.

Finding an old sprocket someplace would be rather helpful - and the sprockets for the larger cc models are interchangeable to some extent, so maybe the smaller ones are too ?

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 13, 2018, 10:26:34 PM »

To change to a lucas there was a list of stuff you had to change including crankcase

Thats what i had suspected.
Not a very good strategy by RE, methinks.

Suppose it keeps the deluxe models more exclusive like...

British Bikes / Re: Royal Enfield Model D
« on: January 13, 2018, 04:00:20 AM »
Welcome aboard !
Any chance of a pic of the whole bike - help prevents making an absolute howler from misunderstandings.

You may have seen the very recent discussion here about the 1951 Model S exported as part of a batch to Australia, and unknown to the historians. So yes, such things are possible.
Having Graham run those numbers through the RE dispatch records will likely shed some light on this too.

Is the clutch cover tinwork the same as for your G or J.?
A lot of military bikes came out to this neck of the woods, so such parts are not impossible to source. Have fun.

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 11, 2018, 03:53:45 AM »
That brochure pic for 1952 certainly nails the Miller part of the electrics.
Interesting that it mentions a Lucas Magdyno as an option, if you can't make one fit ?

That tank badge looks later though, wasn't 1953 the first year for them. ?
That exact pic is in Gordon Mays' book as a 1954 model.
(noting previously that he has nothing for the Model S for earlier years).

Identify these bikes! / Re: Barr and Stroud mystery bike
« on: January 11, 2018, 03:48:59 AM »
Very stylish looking bike - that front guard is quite distinctive on it own.
Quite a lot of brakes for 1924 too, although could be from a later year, and earlier engine.

Didn't you have the production records for B&S, or was that just part of them ?

Identify these bikes! / Re: Old monstrosity form a scrap yard needs ID
« on: January 11, 2018, 03:43:50 AM »
Distant half ancestor to the Kettenrad ?
Actually there is no similarity whatsoever, although the concept is not that different,
if you take away those half tracks.
Maybe the machinegun or artillery piece that was mounted on it is still there, somewhere ?

Have you/ can you have a close study of that differential.
If it is purpose made for the job, rather than something welded in place,
then that puts it into a different ball park.

Otherwise, maybe "The monstrosity from Bulgaria" isn't so inappropriate ?

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 10, 2018, 02:01:54 AM »
and yes alot of books dont mention the export model

I suppose that begs the question - did ANY mention it ?

What now makes it 1952, and not 1951 ?

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 09, 2018, 09:55:24 PM »
I've got bonded linings in my Albions clutch.
This makes the clutch sweet as, and absolutely transforms the gear shifting.
Doesn't get hot and bothered either.
(Although it doesn't take away the false neutral going into 3rd sometimes.
That could probably be fixed also, but when the rest of it is sooo good...)
These plates were in it when I got it, so can't say where they came from.

I see that Gordon May's bible on all Enfield models doesn't  list a Model S between 1946 and 1953.
So was the factory building batches of models that weren't in the catalog,
or just using up stray spares to build bikes and sending them to far corners of the globe ?
This means there is no brochure pic of a 1951 Model S  ??
Maybe local advertising might show something ?

And, there is no mention, anywhere, of using a Miller magdyno, all mentions are of Lucas equipment.

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 09, 2018, 12:53:31 AM »
If Graham checked the numbers, then he should know.

When you say 'matched numbers' does that mean same numbers ?
Or the engine number is a match with the one in the register of bikes, and the frame number (different) is a match with the register too ?

My prewar stuff has the numbers stamped on the engine left side,
but they are not Model S, maybe they were different.

Those pics don't quite show the gearbox in enough detail, but they ( engine & gearbox) could well be postwar. A Miller magdyno might explain that too, not seen those before.
Don't know how the steering head works out though, its not generally a simple bolt on swap between girders and teles, there is an inch that needs a workaround.

P.S. We'd be interested in seeing this Miller magdyno when you track one down,
just for the education.
Have fun !

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 09, 2018, 12:03:40 AM »
Plus, the whole steering head is shorter in girder fork frames than for tele fork models.
Yours looks to have the girder fork version.

What does the gearbox look like ?

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 08, 2018, 11:56:31 PM »
Bike was made to look like a 36 with girder forks but checking frame and engibe numbers it was a 1951

Have you had the numbers thoroughly checked by the Enfield Owners Club ?
The prewar numbers were repeated postwar, unless they found a proper match, so often its the features that determine which is which. ?

The only real difference was that the engine mounts became wider postwar, and the carb inlet became more offset. Oh, and the rear brake had several forms.
And the fork stops won't be right if it was intended for tele forks.
Plus, if the magdyno won't fit, its likely a prewar engine.


Unless the full spectrum of motorcycle types manufactured is preserved, at least in part,
a very lopsided view of what folks rode and enjoyed would emerge ?
Not everyone had a road burning supersport. Far from it, in fact....

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 08, 2018, 10:12:20 PM »
I'll swear Royal Enfield fitted a special pump to push oil out of the timing gears and through the bleeding thing. It positively dripped oil out of the points box and keeping the points working was a battle.

Enfields use the timing gears to feed the oil back into the oil 'tank' compartment (in the engine),
so if the (rather basic?) oil seal* behind that unit isn't perfect,
it is rather likely the oil will go somewhere else other than the tank (!).

* the magdyno only has a felt ring there.

British Bikes / Re: 1951 Royal Enfield Model S S672
« on: January 08, 2018, 08:45:31 PM »
Is this the unit we are talking about ?
This is a Lucas E3HB
I thought they were only prewar ?

Prewar, if you bought a standard model RE, this is what you got for ignition and lighting.
All 30  ? watts of it !
If you bought the Deluxe Model, you got a magdyno, and tubular forks...

btw, these things spin at engine speed.
Finding the gear to drive it can be tricky too ?

btw2, I'm not sure of the function of that clamp, or where/how it should be fitted.

British Bikes / Re: Massey & Massey Arran motorcycles
« on: January 05, 2018, 11:58:41 PM »
You want more !!
(all credits to Oliver Twist)

Why not start the ball rolling - perhaps a short technical precis of your bikes, and some good pics ?
Some of the contributors to this forum have done just that with their own machines,
if you follow the links - like Leon above. (although not necessarily with Massey bikes)
If the book on these hasn't been written yet, then maybe its time it was, or a start anyway.

and who better than someone who owns one of each  ?

European and Other Bikes / Re: Jules Verne's mysterious motorcycles
« on: January 04, 2018, 11:30:12 PM »
Hurtu gets several mentions only in Bourdaches book on early French motorcycles
(Dietrich doesn't), but there are no pictures.

The only detail is a 16 HP Hurtu engine mention - a cycle pacing affair (?).

This entry is in the list of manufacturers near the back of the book.
(quite an extensive list, it must be said)

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