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Messages - cardan

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Identify these bikes! / Re: unknown motorcycle engine
« on: November 03, 2008, 02:02:38 PM »
I was thinking something like Cito or KG - built in former East Germany I think, so Czech Republic sounds OK. The motor seems to have a "timing chest" between the magneto and the crankcase - just the sort of place that you might expect to find timing gears and cams in a four stroke. There's even a plate on top where the tappets might mount. Cito/KG had valves at the front. Many two strokes used magnetos driven directly off the end of the crank, but this one is not on the same axis as the crank. In a four stroke it is geared down 2:1 and so is offset from the crank.

The reason I'm interested is that there was an unsuccessful Australian bike of the early 1920s called the "Aussi Also" (witty name if you know a little French and some Australian slang). The two stroke Aussi Also was a very similar layout to this engine (shaft drive, magneto in front), and was said to be a two stroke built from a four stroke. The reason it never ran properly was said to be lack of crank case compression, as you might expect from this type of conversion. Of course it has always been thought that the (bad) conversion was done in Australia, but I wonder if this engine tells us differently?

See if you can get the owner to take of the magneto and "timing cover" off, and show us what is inside.

I'll attach a photo of a Cito, taken here in Australia of all places.


Identify these bikes! / Re: unknown motorcycle engine
« on: November 02, 2008, 08:57:06 PM »
Interesting. Perhaps we need some clues. What country does it live in? Does it have shaft final drive, or bevels for a chain? How many speeds in the gear box? If the motor is yours, have you ever removed the bronze (?) cover between the magneto and the crankcase? If so, what's in there?
There are a few things about the motor that make it look a bit like a four stroke that has been converted to a two stroke.

Identify these bikes! / Re: Is this a DKW?
« on: October 08, 2008, 12:22:17 PM »
I wonder if it's a bit earlier than 1928? Having a look at the very detailed NSU site
the 1925 2 h.p. NSU "Pony" seems to fit the bill: 2 speed (with funny long gear lever), belt drive, no front brake, and the "new" springs-in-tension fork.
The 1928 201 R (R=belt drive - getting a bit old fashioned in 1928) seems to have a front brake, 3 speed gearbox and a bigger fuel tank.

Identify these bikes! / Re: +/- 1912 bike, JAP engine. Please help identify!
« on: September 04, 2008, 01:51:19 PM »
Hi France,
Looks to be a c1913 Matchless, with a 3-speed Armstrong hub and hand starter. Very nice indeed - looks reasonably complete. If you can supply engine and frame numbers, I'm sure it can be dated more accurately.

Identify these bikes! / Re: What are these 1906 bikes?
« on: September 18, 2008, 01:12:00 AM »
And the 1906 Yale.

Identify these bikes! / Re: What are these 1906 bikes?
« on: September 18, 2008, 01:10:19 AM »
Hi Lynn,
I'm sorry you seem a bit unhappy about dating the Yale motorcycles in your photos at 1910, even if I can understand your scepticism of information that arrives via the internet! I'll attach period (and dated) illustrations of the 1906 and 1910 Yale models to show the differences. For more info (for example to show that the 1909 Yale is quite unlike the 1910 model), follow the link in my previous post above.
I'm not an expert on Yale, but I am very interested in the origin of the Yale motorcycle as I own a 1903 California which was the basis for the 1904 "Yale-California" - the first Yale motorcycle. Or at least what I thought was the first Yale motorcycle! I'd be most interested to hear more about the 1901 Yale Test, as I've not heard of it before.

Identify these bikes! / Re: What are these 1906 bikes?
« on: August 31, 2008, 10:25:54 AM »
Fabulous photos! This model Yale was introduced during 1910, as the early 1910 models had trouble with breaking frames.


Identify these bikes! / Re: 1920s/30s bike identification help please
« on: September 13, 2008, 11:59:51 AM »
Where are the vintage AJS experts? I'm not one, but I can say that the bike is an AJS from 1929-30. Was the purple tank panel was used for 1929 only? The model is a side valve single, most likely a 350cc, so more a commuter than a sporting machine.


Identify these bikes! / Re: What is this bike please?
« on: August 15, 2008, 11:57:21 PM »
Yes, very nice indeed. It's a water-cooled Humber of about 1913. Note the foot starter attached to the back wheel. It's a bit hard to see, but from the two foot pedals at the front I'd say that the machine has a ROC hub gear. Most luxurious.

Identify these bikes! / Re: WHAT IS MODEL FROM RUDGE
« on: August 08, 2008, 08:00:17 AM »
Hi Fernando,
I think you might be missing one digit from the frame number. According to Bryan Reynold's 1977 book "Don't Trudge It, Rudge It" 61xxx would be 1937.
By the way, 1932 was a very special year for the Ulster - the only year that the 499 cc bike had radial valves.

Identify these bikes! / Re: Restoration Project??
« on: July 26, 2008, 11:42:55 AM »
Yes it's not a project for the faint-hearted. Here is what it would look like (from the 1922 catalogue):

Identify these bikes! / Re: Restoration Project??
« on: July 22, 2008, 08:10:32 AM »
I passed the photos on to my friend Peter, who revels in seriously-weird things. He identifies it as Royal Ruby:

"It is a 2 3/4 hp touring Royal Ruby of about 1922. The 3 hp has the two side stands but the 2 3/4hp has the conventional rear stand. It is the touring model as the sports model had downswept bars . All models had the Royal Ruby patent adjustable forks fitted with a laminated spring. As well all Ruby frames have patent safety stays fitted to the front down bar connecting the steering lug to the engine and "eliminating all chance of breakage to the front down tube" (i.e. it has 3 front down tubes as it has two supplementarys bolted on either side of the front down tube)."

Sure enough the Ruby Cycle Co. did patent the fork: GB167650. From a quick look, it seems identical with the Baker patent, except that vertical leaf spring in the Baker design is replaced with two flat-steel side plates. The patent lawyers could have a field day! But since neither firm sold more than a handful of bikes...


Identify these bikes! / Re: Restoration Project??
« on: July 20, 2008, 07:56:23 PM »
Hi Nigel,

Montgomery had a couple of patents for leaf-spring forks (as used by early Brough Superiors), but they all seemed to use only one leaf spring. Do I see two perpendicular leaf springs on this beast?
If so, I think we're looking at a c1919 Frank Baker (Precision) creation, based on one of his patents GB118256. This would make the bike a "missing link" between the many pre-WW1 Precision-engined bikes and the post war Beardmore Precision. Things like the stirrup front brake and chain-cum-belt transmission would fit the date.
Any chance of a close-up of the front springing? Also, do I see twin front down tubes on the frame? They're not half-round in cross-section by any chance?
Quite a nice bit of history to keep under the garage floor.


Identify these bikes! / Re: IS this an old Enfield?
« on: July 03, 2008, 08:47:30 AM »
No, not an Enfield as I think it dates from around 1908 when they were having a rest from motorcycles. The frame is again a Chater Lea kit. The gusetted steering head and low top tube was called "new" in the 1907 catalogue.  The CL forks look rigid, but the little CL sprung links might be hiding under the mud guard skirt. Not sure about the motor - V twin with atmospheric inlets and magneto low at the front.  JAP? Peugeot?... Ditto for the make of machine - probably from one of the smaller manufactuers?
Love the cat on the front number plate!


Identify these bikes! / Re: Strange bike
« on: April 12, 2008, 10:59:23 PM »
Yes it's the sidevalve version of the Ariel Sloper, which shared a frame with the square four. There are some photos of a restored one here:
Hard to belive, but the exhaust sytem is not only original, but was repeated on the other side of the bike!


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