The Best Twin

www.london-motorcycle-museum.org

Douglas

After last Monday at the Museum with just a few visitors that had braved the stormy weather Pete, Chris and I munched our way through the remains of the festive mince pies and chocolate coconut cheese cake that Gita was experimenting with, the next day out was Thursday. At the Wey Valley Advanced Bike club meeting on the first Sunday of the month I was asked if I could stand in and do a presentation because the arranged speaker had dropped out. I had a bit of time to do some research with a view to confirming that Bosch really had produced Douglas motorcycles for a few years after the First World War. This is a 1910 model.

The result was no more information than I had even the 2007 edition of the illustrated encyclopaedia of motorcycles by Erwin Tragatsch and that had dropped the reference that was in the 1975 edition that I have. However other information was discovered buried in the Bosch archives. This was about the relationship with Fred Simms. He was an automotive entrepreneur who sent Mr Bosch a De Dion Bouton tricycle in 1897 for his to investigate its performance. Up till then Bosch had only made a low voltage magneto that would allow engines to run at about 200 rpm. Fine for the big stationary engines but no good for a motorcycle. Bosch needed to develop a better system and the first high voltage magneto was born. In 1898 Fred Simms and Mr Bosch set up the UK distribution centre located in London. By 1902 Mr Bosch had got the high Voltage magneto working properly and had obtained the right ceramic that would stand the heat for sparking plugs and the two together made Bosch very rich. Everyone was using the magnetos and sparking plugs. Fred Simms had close contacts with Bosch but he could see there was an even better way of producing a spark so he manufactured his own motorcycle with the first proper horseshoe magnet magneto in 1903 and used it on the Clyde Motorcycle.

Sadly, the Clyde is no longer at the Museum, the motorcycle was sold by the family and we have not been able to trace where it has gone. In 1907 Mr Lucas took a fancy to the Clyde Motorcycle Company and Mr Simms sold it on. Every one was using the Bosch magneto until the out break of war. During the war Douglas motorcycles were the bike of choice. It was smooth, reliable and had good performance. Large numbers were produced and production was only second to Triumph. There were even some made in France. Post war Douglas were involved in supplying engines for light aircraft based on the 500cc ohv racing engine that produced some 20bhp at 5500rpm. The same power out put as the Triumph Ricardo of that era. Germany did not have any comparable engines at the time and even Mr Messerschmidt was at the Kingswood factory. However he ended up looking at more than engines as he married one of the daughters! By 1923 Douglas motorcycles had claimed over 200 speed and reliability records among them, in the 500cc category, nearly 100mph at Brooklands over the flying kilometre. Records for 1923 were held by Cyril Pullin and Rex Judd.

It has ben reported that Cyril got over 105 mph at Brooklands that year. Cyril Pullin was not only an expert motorcyclist, but engine tuner, pilot and aviation engineer. Also in 1923 BMW produced their first motorcycle in the R32 and the engine looked very similar to the sv Douglas of the time used in a transverse layout and may have been a direct copy. They do look similar but I can find no real evidence to support this other than the family anecdotes and Tragatsch's reference. Engine development progressed and it was not until the mid 30's that Douglas moved over to the transverse twin. The first was the Endeavour and a little later the ohv models 80 plus and 90 plus some of which my father rode as a tester in the late 40's for Douglas. More to follow as I delve deeper into the history of Douglas.

What to do when it rains!

 www.london-motorcycle-museum.org

Visit a Museum 

I tend to go find something to read but just once in a while there are more active things to do. 

Sunday I was at the Wey Valley Advanced Motorcycle club first Sunday of the month and this new year for the morning as bad weather was expected and I headed home early and spent the afternoon reviewing my London Motorcycle Museum presentation. Monday I was at the Museum and we have a new volunteer in Chris to help out. He has loaned us his Triumph Trophy and it is on display in the Home of Triumph. It rained and rained all day so I looked up more things from the Classic Motorcycle. We did have a few visitors, one from Moscow. His English and grasp of technical terms was very good. I would like to have that level of understanding in another language. Tuesday I was at the Isleworth Probus club to give a presentation about the Museum. I’d scrubbed up to look my best, suit and all for the occasion. 

They were an enthusiastic group and many recounted their own exploits on motorcycles from their youth. I didn’t need to hand around any fliers as they had already booked a visit to the Museum for Monday February 3^rd.   

Wednesday was a trip out to a private collection I had been invited to while at the Off Road Bike Show in December. This was the first promised dry day for ages and I made the most of it heading out to deepest Surrey late morning. To say the least it was not a warm ride but the reception certainly made up for it. There were more than forty bikes in the collection with early AJS’s in pristine condition. In the collection are Ariels including a real red Red Hunter, a couple of Greaves and a Royal Enfield track bike that has a very short wheelbase.

 His line up of Norton’s’ is very impressive. All of the bikes are in such good condition and roadworthy. If you would like to view his collection then contact Dave on 07836384505. He has some interesting stories to tell from his youth and still enjoys his bikes searching out and rebuilding them often making his own parts that have become impossible to find. I did like the experimental bike known as the Dunaton a classic in its own right that was drawn from 1930 parts plus a few newer ones to finish it off.

 Dave has an early Gold Star a ZB34 and a Triumph TR5 that has the same top end as the generator engine mentioned in the GP racer posting. There are bits around everywhere waiting to be used in the assembly of yet another project. His collection continues to grow. Keep an eye out for him at some of the events in Surrey as he usually rides one of his bikes to them.

The Norton 500T

www.london-motorcycle-museum.org 

Another Norton.

Another week since I was at the Museum and that was just before New Year. The weather is still inclement but it did not deter the enthusiastic. We had visitors from Norway, Switzerland and Belgium plus a few sturdy Brits who took advantage of the pound off Monday saver. Since then I have been out and about on the Kawasaki trying to avoid the rain with no trip out being completely dry and not managing to leave fliers anywhere. As to my last day at the Museum I discovered another article in the Classic Motorcycle of May 1996 about another Norton we have at the Museum. This is a 1949 500T. T is for trials although at 300lbs or 136kg it is not a lightweight but it is allot lighter than bikes of that capacity now. My Kawasaki ER6F weighs in at 407lbs or 185kg and the Buell at 462lbs or 210kg. Bikes have got allot heavier and taller.

 So this Norton had alloy head and barrel that has a cast iron liner. The rigid rear end always gives a lighter bike than one that has suspension. The low compression of 6:1 of this long stroke single assisted greatly in ensuring the engine would pull from nothing but still had enough get up and go to get around a difficult trials course for that time. These machines were campaigned successfully by such people in Irish Trials as Kevin Keegan, Chick Gibson, Bob Kenny, Mick Treacey and Sean Whyte. I have heard that even Sammy Miller had ridden one.

 The style is a winner and was displayed on the Museum stand at the Kempton Park off     Road Bike Show in December receiving an exhibitors medal. At the Museum it sits at the back of the competition display next to the Norton 650SS production racer.

There is more interesting stuff in this magazine with Mike Hodder in 1969 testing out the 100bhp Honda 4 that Mike Halewood raced and Dennis Frost talking to Peter Goodman on Velocettes, the restoration of a Gnome-Rhone and Gold Star single verses the Gold Star Twin of later years. You may wonder what there is to do all day at a Museum but there is always some researching to be done to add a little more information about the bikes in the Museum so that when you do come along we can answer some of your questions.