Back when I was running the CTC Shop (2001+) I was instrumental in the design of the Airborne Valkyrie Audax/ Van Nicholas Yukon; initially it had vertical dropouts.
During that time the demand for single speed bikes started to increase; I had been riding a fixed with traditional horizontal dropouts since I was a teenager, I confess this new trend made me smile as I am someone who is seldom seen as 'on trend'
. As this new demand gathered momentum it was not lost on me that my old store where I had been manager and frame designer had sold more of their single speed Pearson Touche model that could take mudguards than Specialized had sold of their single speed Langster model here in the UK; a model that could not take guards. Pearson had tailored their Touche for the UK market just as I had done with the Valkyrie Audax and Specialized hadn't.
To react to this new demand for a bike of bike aimed at the UK market I promoted that the Van Nicholas Yukon converted to horizontal dropouts, that like my Pearson had the versatility that it be could be used with both a derailleur or a single speed set up; plus, having a horizontal dropout wheel removal with mudguards fitted was easier than it would be with a track drop out.
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My Pearson with horizontal dropouts and mudguard eyes
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Pearson Touche, track dropouts with mudguard eyes
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Specialized Langster, track dropouts no mudguard eyes
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Van Nicholas Yukon, with horizontal dropouts and mudguard eyes
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Close up of the horizontal dropout
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More popular vertical dropout.
After 'one model season' the horizontal dropouts and mudguard eyes model reverted back to the vertical dropout version. To be fair not enough were used as single speeds, the majority were still ridden set up with a derailleur and as such the general consensus was that those customers preferred vertical dropouts, especially when made of titanium as a cheaper QR skewer can struggle to secure the wheel enough to stop the wheel pulling over when under higher loads.
Totally understanbly that they did so, even though arguably Titanium bikes cater for the niche market, they still look at trends and numbers, the market for a versatile Titanium frame/bike set up that could be used as both a derailleur or a single speed set up simply was outweighed by the majority who didn't feel the need for a Titanium bike that offered that versatility