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World's cycliest cyclecar : The Grafton

We have shown it earlier on these pages, but we can't get enough of Tim Gunn's faithful interpretation of a sporting cyclecar based on the 1913 book "How to build a cyclecar" and an article from the cyclecar magazine from 1913 telling the story of an employee of the GN works who built a 1/2 size GN using bicycle and motorcycle components. 1919 300cc JAP sidevalve motorcycle engine with racing cams - 3 speed Sturmey Archer motorcycle lightweight gearbox and ash wooden chassis frame.

The result is the bare essence of the cyclecar: not too much more weight than a light motorcycle with two extra wheels. Lightyears below the French standard which allowed for a maximum of 350 kilograms.

 

Photos courtesy The Old Bicycle Showroom.

 

Publié:
mercredi avril 21st, 2021
Brian Woods
22 Avril 2021, 08:31
Yes, there is more than a thriving community of CycleKart enthusiasts in the USA and Canada. And despite Covid, events are popping up all over the Country, and New CycleKarts are being built every day!

Woody
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Inconnu
06 Juin 2013, 12:08
"Must have taken a bit of effort to get it road registered & MOT tested" - I'll say - I have just obtained a nice period JAP engine and want to start my own build, but cannot work out the rules in the UK at all - any one have any idea's
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Inconnu
11 Mars 2013, 10:59
Thanks to Prewarcar.com for the article. Thanks also for the comments. The book "How to build a cyclecar" is currently at the printers, but will soon be available here: http://www.theoldbicycleshowroom.co.uk/how-to-build-a-cyclecar-1951-p.asp
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R.Mawer
08 Mars 2013, 10:05
[quote name="Andrew"]Is "How to build a cyclecar?" available as pdf or a hardcopy for sale?[/quote]
I have a copy (somewhere) of this publication,but it is NOT a substitute for your own initiative,or know-how! It was written by journalists,rather than spanner men,& relied totally on the loose components that were available to buy from several firms at the time-these included steering assemblies complete,front & rear axles,as well as the more obvious needments.To build a cyclecar today,you have to be both resourceful & skillful,& be able to think "out of the box".You will also get on better if you have piles of old bits & pieces (of all kinds !)around you.
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Inconnu
06 Mars 2013, 19:46
Is "How to build a cyclecar?" available as pdf or a hardcopy for sale?
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R.Mawer
06 Mars 2013, 15:25
Notice the steering kingpins & stub axles on this brilliant "graft-on".They are bicycle "bottom bracket" assemblies with suitably-bent pedal cranks (held by cotter pins,of course!)Not sure if he has used the bike frame tubes,welded together in the centre,as the axle beam-its possible,with,hopefully,external close-fitting sleeve tubing,as reinforcement.As to brakes,I can spot what might be a small(very!)external-contracting band brake on the nearside-maybe thats all!Amazing resourcefulness!Note-"graft on" means to join together two (or more) pieces from different sources!
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R.Mawer
06 Mars 2013, 11:06
It takes a highly skilled artisan,with artistic gifts besides,to create something as good as this-totally in period,&,most importantly,only loose parts used.No hacking or chopping of an existing old vehicle.I imagine steering (with no,or at best,variable, castor action,+ incredibly high gearing)& stopping (brakes in name only?)are a bit troublesome,however? Must have taken a bit of effort to get it road registered & MOT tested.A terrific achievement-real creativity,without spoiling anything!
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Inconnu
06 Mars 2013, 03:13
And you can still build your own today.
A group of enthusiasts in the US are building and having fun in what they call CycleKarts.
The only restriction, ...... you have to build them yourselves.
They have some advice for how to get the most fun out of them, but it's all up to you ! see :
http://www.cyclekarts.com/
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