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Old 01-22-2010, 04:48 AM
fireball_jones fireball_jones is offline
Motorized Bicycle Member
Join Date: Nov 2008
Location: wales
Posts: 21
Default most compact folding motorised bicycle?

hello, after years of looking i thought i would introduce myself after finally finishing my bike.

certainly not a kit and took well over a year to solve what i wanted.

Some people may not like the look, but for me its about practicality (or however you spell that word )

anyway I though you may be intrested in my project, which is based on a dream to see the world…

Thus I invented the Brrompton™ © to enable such dreams.

please see photos for explanation.

Total mileage, stopped counting at a 1000,
Top speed, too fast for a responsible adult (≥28)
Weight, around 20kg
Range (with engine tank), 23-35 miles
Range (with one gallon tank and engine tank), 138-205 miles
Pedal assistance is required
Max climbing angle, with BWR I’ve had no problems
Max one day tour, over 120 miles

I have also tailored the other aspects of the bicycle outside the engine etc design, some I changed and then some I change back. It took time to get to a point where I realised changing anything else would be a detrimental. Ill just wait for 349 mm off road tyres until then its walking , which is plesent dont forget people.

(Additionally: this work is my intellectual property and any financial gains from this will go to a charity of the invertor’s choice )

And most importantly “ a ride on my Brrompton™ © makes me smile”

Any questions feel free to ask.

kind regards,


unfortunatley site wont let me upload photos so i have put them on another, here is the link:
motorised Brompton aka Brrompton™ ©
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