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This feature offers the opportunity to learn more about exhibitors’ individual style and inspirations, as well as giving an insight into their behind the scenes preparation for Bespoked 2014.

Every week we will ask a couple of different framebuilders the same five questions and along with photos of them, their workshops and the bikes they make display them on these pages.


Karl Sparenberg

1. What defines your style as a frame builder?


It’s difficult to determine a certain style when you can’t place a recumbent trike or any Human powered vehicle (HPV) into a traditional cycling class. Windcheetah’s borrow considerably from nature with organic shapes and forms. Marching from a different beat and free from the UCI restrictions of what a ‘bicycle’ should be, their rule book has been thrown out. With this liberation, the machines we build are constantly evolving, with the search for speed and comfort at the forefront of where we are going.

We get raw materials in and after a consultation with the customer, a hand made machine is produced for their riding style and individual requirements. Style is nothing without substance, we marry exotic materials such as carbon composite and titanium to a refined Burrow’s design, resulting in a light weight and compliant machine, simply speaking, mixing the magic cocktail and producing the best machine we can build. This iconic Burrows design is over 30 years old and was the first of its kind, it has stood the test of time with only a few incremental refinements made over the years.·

Nowadays, a great deal of frame construction is mass produced over seas and shipped over to the UK for simple assembly. Our bespoke handmade machines have the personal touch, appealing to the more discerning rider, at a glance you will notice that they look nothing like any other recumbent. With Burrow’s trademark quirkiness, the single sided rear wheel, bonded frames, hand-engineered aerodynamic accessories and much much more, you could say our style is truly unique!


2. Who, or what has inspired you?


Having ridden every type of cycle with pedals, from Dutch sit up and beg roadsters to full on downhill monsters on world cup tracks, I have enjoyed and taken inspiration from them all. Mike Burrows has to be one of my main influences, as in my opinion, he is a genius. After spending time with Mike you just get to see the tip of the iceberg, as his influence on the cycling world is far reaching. He made me realise years ago to ignore most and free your thinking, there is always a better and more efficient way. The HPV movement is a hotbed of forward thinking and just by simply being in this environment means that you are constantly challenged and dreaming up new innovations.·


3. Are you preparing anything special for Bespoked 2014?


Laid back bikes are special enough don’t you think? I understand that the Windcheetah trike is off the riding radar for many, so I feel the Ratracer SL will be an introduction for riders of conventional stick bikes into the comfort and speed that is readily available laid back. Faster or greater distance for the same effort is the ideal scenario, but even if you do not attain that, you will definitely have a more comfortable ride.


4. Where is your favourite place to ride?

Anywhere, I just love to be out on the bike/trike, I don’t even mind the windy rainy days when you are cold, just makes you appreciate the nice days… you have to earn your perfect moments! But geographically I’d choose the French Alps in summer.·



5.If you weren’t a framebuilder what would you be?


Sitting in a job day dreaming about cycles… i think its in your DNA to do this kind of thing. I did spend many years in a 'proper’ job on large engineering projects for an international company, this I now class as training for what I do now. I would still choose to do something with my hands and ideally it would be producing another artisan product… maybe in glass, as that looks interesting to work with!


Karl Sparenberg

Darwen, UK


Maker - Karl Sparenberg

Designer - Mike Burrows

Advanced Velo Design - Windcheetah

Where - Darwen

Number Made PA -


The Burrows designed Windcheetah recumbent trike, hand made in the UK bespoke to customer by Advanced Velo Design. We are hoping to also launch and showcase the latest design, a two wheeled recumbent Ratracer SL this revolutionary front wheel drive with carbon spring suspended seat.

Advanced Velo Design,Care of Astley Bank Engineering, Unit 12 Ellesmere Road, Darwen, BB3 1HT

Web - http://www.windcheetah.co.uk

Email - karl@windcheetah.co.uk

Phone -

Framebuilders of the week
getting to know the people that make the bikes


Previous framebuilders of the week

Advanced Velo Design - Karl Sparenberg

Ahearne Cycles - Joseph Ahearne

Craddock - Richard Craddock

Donhou Bicycles - Tom Donhou

Grim Bicycles -Rollo Lunn



Previous framebuilders of the week

Mawis - Mathias Scherer

Malcolm Custom

Satoma Cycles

Shand Cycles - Steven Shand

Strawberry Bicycles- Andy Newlands

Sven Cycles - Darron Coppin

Sword Cycles - Tim Leicester

Wittson Custom