Brompton Bicycle Wikipedia. Brompton Bicycle is a British manufacturer of folding bicycles based in Greenford, London. Production was previously in Brentford. The Brompton folding bicycle and accessories are the companys core product, noted for its self supporting compact size when stored. All available models of the folding bicycle are based on the same hinged bicycle frame and 1. Components are added, removed, or replaced by titanium parts to form the many variations. The modular design has remained fundamentally unchanged since the original patent was filed by Andrew Ritchie in 1. Hard Time 2D. Ritchie was awarded the 2. Prince Philip Designers Prize for work on the bicycle. In reviews of folding bicycles, the Brompton is often the winner. Brompton is the largest volume bicycle manufacturer in Britain,1. The company also operates a Bicycle hire system. Classic M handlebar and rear rack front, and S handlebar and no rack rear. Four stages in folding. The final step of lowering the saddle locks the package together. All Brompton folding bicycle models share the same curved frame, consisting of a hinged main tube, pivoting rear triangle, fork, and hinged handle bar stem. The main tube and stem are made of steel in all models. The rear triangle and fork are either steel or titanium, depending on model. The steel sections are joined by brazing not welding. Rohloff Hub Manual' title='Rohloff Hub Manual' />Module1 hubs rims calculator instructions D data fd rd TABLE TABLE TABLE2 TABLE2 TABLE3 TABLE4 Rigida TUB 25 ERD is Rigidas Nipple Seat Dia 3mm for nipples. Cycling Plus. Cycling Plus is the manual for the modern road cyclist. Whether youre cycling weekly, an occasional new rider or a. Wheels are 3. 49 mm 1. The handlebars and some peripheral components are aluminium. A Brompton bicycle uses over 1,2. Brompton design. 1. As of 2. 01. 0update the combinations allow one, two, three, or six speed gearing options to be factory fitted, with higher or lower gearing available as an option. A. What is a Schlumpf gearing system A. Structure of Schlumpf gearing systems A. How to shift A. 2. PDF Download. Focus RAT Using roll coaches Version 2 DE EN FR 05 2017. Focus Attaching the easyreach controlcable to the handlebars DE EN 02 2017. This page used to list all nonelectric folding bikes. Keeping the list uptodate became increasingly difficult, as brands exploded, and prices fluctuated wildly. Rohloffrsquos Speedhub is the daddy of internal gear hubs. Itrsquos a classic bit of kit and offers famously longlasting performance. Ryuichi Sakamoto. A site for folding bike enthusiasts. Spain Vs Italy Euro 2012 Full Match Video'>Spain Vs Italy Euro 2012 Full Match Video. News, manufacturer directory, buyers guide, and articles. This page was originally written in 2008 about the WorkCyclesBakfiets. Cargobikes. In 2014 WorkCycles replaced the Cargobike with the Kr8 bakfiets. Schmidt Dynohub and Lumotec lights for bicycles now available in the USA. Photographs and specifications. The Brompton uses a combined rear fold and suspension design. During riding, the rear triangle rests on a rubber spring to provide suspension between the rear wheel and the main frame supporting the rider. The suspension block is kept in compression by the riders weight. A factory fitted firm suspension block is offered as an alternative to the standard block for heavier riders or those wanting a more responsive ride. There is no suspension for the front wheel, although the titanium forks of the Superlight versions provide a small amount of spring. The foldeditThe elements which allow the fold to work are a pivoting rear triangle, allowing the length to be shortened, while keeping the bicycle chain in the same alignment. There is a slight arch in the main frame to allow the wheel to swing under to the parked position a chain tensioner arm capable of swinging through a wide arc, in order to control the full length of the chain during folding without the chain coming loose. In the folded position the chain is looped back on itself small wheels on top of the rear mud guard andor carrier to allow the folded bike to be rolled a main frame hinge in the centre of the bicycle allows the front wheel to be swung around and placed against the rear wheel. As the front wheel also rotates freely for steering purposes, the front wheel remains pointing forwards even when folded a handlebar stem with the hinge placed at 4. When lowered during folding, the base of the post locks against the lower stop disc preventing the folded package from swinging open a folding pedal on the left hand side. The final folded package is 5. The standard saddle of 2. With practice, folding and unfolding takes between 1. Brompton popular with commuters. Models are signified with a letter each side of a number to describe the handle bar type, number of gears and factory attached fixtures respectively. A suffix is appended to show the inclusion of titanium upgrades. As an example, the model code of M3. R refers to classic M handle bars, 3 gear speeds using an internal hub and an R for having a rear rack. The same model making use of titanium for some parts would be M3. R X. Handlebar style. Gearing choice. Fixturesf 1Material. Ssporty. 1single speed. Eminimal no mudguards, no pump Xoptional lighter titanium forks, triangle and sundries. Mtraditionalf 12two speed derailleur. Lmudguards. Pdual height. Rmudguards and rear rack. Hupright. 6internal hub and derailleur ab. Until 2. 00. 7, all Brompton bicycles had M style handle bars, with the fixtures being C no mudguards, L mudguards or T rear rack and dynamo lighting. These roughly map to the present E, L and R models. Only 3 or 5 later 6 gears were offered, and this was written after the type. A late 1. 99. 0s T5 would be similar to a present M6. R, while a C3 would be close to the present M3. E. The old marketing terms were Companion, Lightweight and Touring. Factory additionsedit. Different colour folded Brompton Bicycles in New York. Half retain their supplied stock saddle. All models may have the wheels on the corners of the rack replaced with larger eazy wheels, to aid pushing when folded and to give greater heel clearance than the stock rollers. All models can choose to have no lights, lighting powered from battery, or two variants of front wheel hub dynamo. Seat posts can be swapped between standard length, extended or telescopic for tall riders titanium and, later, aluminium equivalents previously fitted to the lightweight models are no longer available. Bicycles are offered in four colours at no additional charge Black, White, Orange and Cobalt Blue. Other colours, raw lacquer, and titanium are available at extra cost. Titanium areas are left unpainted, in their natural titanium colour. The standard Brompton saddle can be substituted by a Brooks B1. Special leather saddle ladies or mens versions. Non titanium models have braze on fittings for holding the supplied Zefal HP compact high pressure bicycle pump. All models may have the front luggage block fitted to carry cargo, this is fitted to the main frame rather than to the forks or handle bars to avoid interference with the steering. Hub dynamo options use a special narrow width SON XS hub dynamo fitted at the centre of the front wheel and manufactured by Schmidt Maschinenbau or a less expensive hub dynamo manufactured by Shimano. Until 2. 00. 9, bottle shaped tyre dynamos were used for standard permanent lighting. New bicycles have a choice between Brompton specific Shimano or SON XS hub dynamos. A full superlight variant uses titanium to save weight, combined with lighter wheel components. The option replaces the rear triangle and front forks with titanium and other smaller parts with titanium or aluminium. The main frame structure remains steel. This upgrade represents the largest cost increase of any upgrade, and reduces some variants to below ten kilograms in weight. The titanium rear triangle has no provision for mounting a pump, and a pump is not supplied with titanium models, saving approximately 7. Tyres can be swapped at any point between kevlar based Brompton branded tyres, lighter, faster Schwalbe Kojak or more robust and puncture resistant Schwalbe Marathon. Whilst no longer factory fitted, Brompton bicycles originally used Raleigh Record tyres and continued to do so on the lower end model until the 2. Aftermarket tyres include the Schwalbe Marathon Plus, a heavy but very puncture resistant model. Accessoriesedit. Detail of the folding pedal. A small saddle bag can be fitted behind the saddle for the Brompton cover and any tools or spares. Most of the handlebar types can also accommodate standard handlebar bags.