Not everyone loved their first Moulton experience...
http://beastbite.blogspot.com/2007/07/its-been-all-downhill-from-here.html
Tag: classic
The missing link
At first glance, an F-frame moulton, and a spaceframe moulton have very little in common (apart from small wheels, high pressure tyres and suspension, of course)... I mean in the frame of course. One could be forgiven for thinking that Alex Moulton went back to first principles with the spaceframe design.
Well take a look at these photos from Tonly Hadland's gallery. The bicycle shown is a Y-frame, and it is a prototype from the 1970s that nearly made it into production.
One can immediately see that it is a logical progression from the F-frame concept. One can also see how the basic X-shape of the spaceframe is merely a further step away. Of course, the revolutionary step forward in the spaceframe concept is the application of the geodesic structure.
I recall an interview with Alex Moulton where he spoke about the Y-frame. He gave a friend a Y-frame to try out and to see what he thought of it. His friend told him that it was too heavy compared with the lightweight bicycles that were becoming available at the time. This prompted Alex Moulton to search for a lighter structure for his new bicycle. Whoever that man was... we all owe you a huge debt of gratitude.
Tony's pictures of the prototypes in the Moulton museum in Bradford on Avon show the progression in Alex Moulton's design concepts from ideas stage to production.
Duomatic on my mark III
I used one of my Mark 3s as a fixed gear commuting bike for almost a year, and while I loved riding fixed, and I loved the simplicity and the low maintenance aspects, I found it did have it's limitations.
Firstly, while I love the simplicity, one gear was just not enough. I had no problem honking up the occasional hill, but my commute at the time was through Dublin's Phoenix Park, which has a lovely 4km stretch with a 1% decline and a prevailing tailwind, that always calls for a higher gear than an all purpose gear.
Secondly, I was worried about my knees. Most fixers will tell you it has no effect on the knees, but I rode while recovering from a knee injury (unrelated to cycling) and I can tell you that even the very subtle pedalling to slow down technique places a considerable strain on the knee.
And most importantly, while I made sure the chainline was perfect, and the chain tension was always ok, I was always worried that it would dump the chain, or catch a shoelace, trouser leg or finger with horrible consequences. Sure, the risk was low, but the consequences were potentially so bad for man and machine, that I found myself unwilling to take even that small risk anymore.
Still wanting a simple, low maintenance setup, I picked up a new old stock Sachs Torpedo Duomatic hub on eBay, built it into a 16inch wheel, and tried it out last night on the same Moulton Mark III.
It's a 2 speed hub, with coaster (back pedal) brake. The "low" gear is direct drive, and the high gear is a 36% overdrive. Gear change is effected by rotating the cranks backwards a few degrees, but not quite as far as required to engage the brake.
It's a really simple setup... there are no gear cables to worry about. And unlike most hub gears, there are no adjustments necessary. It just works. It's got the simplicity of a fixed gear / singlespeed, but with an extra gear for those slight downhills or tailwinds, especially in a mostly flat city like Dublin.
When I rode fixed, I used 56x13, giving around 70 inches on the Moulton. With the Duomatic I'm using 56x16 giving gears of 58 inches and 78 inches. I think that I'll play around with these ratios though.
I'm using a 3/32 inch chain, just because that's the size the chainring and sprockets are. The only problem is that the 56x16 requires the use of a half link. Half links in 3/32 size are hard to find, but I did manage to find some in St John St Cycles.
They're not a very good match for a Sram PC951 chain though. I think they're designed for a chain with taller links. They're also very slightly wider than the PC951 making use of a master link with the half link impossible. The easiest solution is probably to replace the 16t sprocket with a 17t.
Alternatively, I suppose I could just change to a 1/8 chain, with the existing chainring and sprockets... as far as I know the only downside is extra noise.
The test ride was quite nice. I intended doing a 10 minute ride, but it turned into a 30 minute ride.
It takes a little practice to change gears without engaging the brake. The brake is good for a rear brake... obviously useless in an emergency, but perfect for slow easy stops. I used it a lot more than I would normally use a rear brake (i.e. I used it). So it should prolong the life of my front rim, as well as the back rim.
Engaging the brake, also changes the gear, which is great when braking in high gear, as it is quite likely that the low gear will be required next. However, if you brake in low gear, the high gear gets engaged, most likely requiring another backpedal to engage the low gear again before pedalling away. It's only a minor inconvenience, especially when it's actually quite easy to audibly determine what gear is engaged.
How? When the hub is in overdrive, it ticks, whereas direct drive is more silent. The ticking is perceptible as soon as you begin to rotate the cranks and before any effort is engaged, so you know you're in overdrive, even before you try to drive the pedals.
If this hub was to come on the market now, I'm sure the reviews would ridicule it as primitive. But that's it's beauty, it's simple, it works, it's not black. And it requires a little bit of skill and finesse to use it most effectively.
When the fixed gear craze goes out of fashion, as it inevitably will, and cyclists search for something that is simple AND functional... these will be in high demand. Apparently Sturmey Archer are considering remaking the ASC hub, the 3 speed fixed gear hub. Any chance that SRAM would remake the Duomatic??
Anniversary of Tom Simpson's death
Forty years ago today Tom Simpson died on Mont Ventoux, while competing in the Tour De France. Aged 29, he had been an Olympic silver medalist, World Champion, and the first British rider to wear the yellow jersey in the Tour De France.
On the cover of Tony Hadland's excellent book The Moulton Bicycle, Simpson is photographed test riding a Moulton Speed at Herne Hill.
On an external wall of the Hall, Alex Moulton's home in Bradford on Avon, there is a memorial plaque depicting the same scene.
Today, the spot where Mr Tom died on Mont Ventoux is marked by a memorial, where cyclists still leave water bottles, hats, inner tubes or whatever they have spare, as a mark of respect to the legend. The British cyclist David Millar threw his hat to the monument while competing in the Tour a few years back, showing whose wheels he was following.
Does anyone have any further details on Simpson's Moulton connections? If so I'd love to hear them.
Some very special Moultons
When I ride my 1964 Moulton Deluxe or my Mark 3s from 1970 and 1973, I can sense the stares from people who have never seen such bikes before. It makes me feel like I'm riding something quite rare.
But in reality, over 100,000 Moulton deluxes were made and over 3,000 Moulton Mk 3's. They are not that difficult to find. However, over the years, many very special Moultons have been made. While the BMC factory in Kirkby and later the Raleigh factory in Nottingham were churning out Moultons, the factory in Bradford On Avon was often producing limited edition or one off specials.
Below are a few examples from Ken Butterfields photos...
This Moulton S Safari had been overpainted black. The black paint was removed using Nitromors, exposing the original chrome finish.
This Mark 3 was built by Jack Lauterwasser for his own use. It features a unique 10 speed drivetrain with 3 levers. The Sturmey Archer hub (I presume originally a 4 speed) was converted to 5 speed, with 2 rear sprockets and a custom derailleur. It's got lots of special features - 531 forks with Campagnolo ends, narrow bottom bracket, Mafac cantilever brakes
Another black Mark 3 this time, but very different. This one has derailleur gearing, and a prototype rear triangle with pump mounts.
Ken has lots more photos which are worth checking out, such as this gorgeous Speedsix
