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Motobecane Moped Racer – Craig Dueck


Posted on September 4, 2014 by Andrew in Moped, Racer. 40 comments

It’s no secret we love mopeds. But having said that, it’s been a long time between drinks for us, ‘ped-wise. Nine months, to be precise. Are we embarrassed that we haven’t done more to support our be-pedalled brethren? A little, but where here tonight to set things right. And how. Here’s one of the best-looking mopeds we’ve seen since the Janus Paragon. Meet “Moby 5” and her proud maker, Craig Dueck.

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“Hello! My name is Craig Dueck. I am from Winnipeg, Canada. I have been building and riding mopeds for the past 10 years. This is my first scratch build. I call it ‘moby 5’. The original concept was to be a typical moped build, until an ultra-rare Motobecane D75 5-speed gearbox was found. I paired the transmission with a Motobecane 50cc AV10 engine I originally had in mind, keeping the classic ‘belted primary’ look of a Mobylette moped.”

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“I started things off by building the cradle frame to house the gearbox and engine. Using a slightly modified pipe bender and 20 feet of wasted tube, I finally got the bends I wanted. A simple image that had been drawn in Photoshop was blown up to life-size as a template, but many alterations were made and in the end I just kind of went with it. I got lucky when I mocked up the motor, transmission, and rear wheel; I ended up having just enough room for the exhaust header to sneak through the narrow down tubes.”

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“The Puch Monza rear sprocket was flipped and bolted to a 60’s Sparta hub for a tighter chain clearance to the front sprocket. Having been my first scratch-build bike, I was more than happy with the geometry and function of all the components working together.”

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“The bike’s style is definitely an ode to classic 50cc racing, in which Motobecane never actually had a 50cc GP racer. I wanted it to look like a factory racer that had been inspired by a D55, but with aesthetics of a moped. I tried using as many Motobecane moped parts as I could, starting with the swingarm. I needed a system to tension the belt and found a single engine torsion spring from a Moby that was perfect with a little tweaking. The primary pulley is off a 60’s Mobylette AV3 which was tapered and cut to size.

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“Many prototyped parts were replaced as the right replacement was found. A set of NOS Tommaselli levers for a set of Indigan clip on bars. Some 18″ Zundapp aluminum rims to replace the 19″ set I originally had on. The slim Heidenau tires were sourced from Belgium, 18 x 2 up front and 2.25 in the rear. Some Loaded Gun Custom rear sets. And a pair of Tomos EBR forged aluminum spring forks to keep it nice and light up front.”

 

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“I can’t thank the Briton Bees enough for supplying the D75 transmission. A single, crucial part goes a long way for a good start to a build. Cheers!”

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