Difference between revisions of "Moped"

Other terms used for low-powered cycles include ''motorbicycle'', ''motorized bicycle'', ''motor-driven cycle'', and ''goped'' (motorized inline skateboard with T-bar).  In German, the terms ''Mofa'' (from ''Motor-Fahrrad'', "motor-bicycle") and ''Mokick'' (equipped with kick-start) are also used.  In Finnish, the common term is ''mopo'' (from ''moottoripolkupyörä'', "motor-powered bicycle").<!-- use of Easybib.com: Note: The first reference Swedish (takes a while to load) and the second one in English is better. -->  The term ''noped'' is sometimes used for mopeds that do not have pedals.

Other terms used for low-powered cycles include ''motorbicycle'', ''motorized bicycle'', ''motor-driven cycle'', and ''goped'' (motorized inline skateboard with T-bar).  In German, the terms ''Mofa'' (from ''Motor-Fahrrad'', "motor-bicycle") and ''Mokick'' (equipped with kick-start) are also used.  In Finnish, the common term is ''mopo'' (from ''moottoripolkupyörä'', "motor-powered bicycle").<!-- use of Easybib.com: Note: The first reference Swedish (takes a while to load) and the second one in English is better. -->  The term ''noped'' is sometimes used for mopeds that do not have pedals.

==Derestriction and performance tuning==

==Derestriction and performance tuning==

By the 1980s, it was obvious{{Weasel-inline|date=January 2010}} that the pedals on mopeds were no longer performing any useful function, in fact the performance of the {{convert|49|cc|1|lk=on}} engines available was delivering speeds in excess of {{convert|80|km/h|-1|lk=on}},{{Citation needed|date=January 2010}} a common model in the UK being the [[Yamaha FS1E]].{{Citation needed|date=January 2010}}  Due to emerging safety concerns that resulted from the considerably greater speeds that newer mopeds were capable of reaching, western jurisdictions introduced new regulations (eg UK in 1977)[http://www.classicbikepictures.co.uk/c319/p2117/yamaha%C2%A0fs1e.html Yamaha FS1E Classic Bike Pictures]{{Citation broken|date=January 2010}}, limiting the speed of these "mopeds" to {{convert|30|mph|0}} (and abolishing the requirement for pedals).{{Citation needed|date=January 2010}}  In some cases, the power restrictions (such as perforated plates in the inlet tract) were primitive and easy to bypass,{{opinion}} but the larger manufacturers such as those from Japan restricted engine breathing with smaller carburettors (eg {{convert|16|mm|2|lk=on}} replaced with {{convert|13|mm|2}}) and modifications to cylinder ports and exhausts.{{Citation needed|date=January 2010}}  Then they fitted [[CDI]] ignition systems tuned to limit maximum engine revolutions; the [[Honda MT50|Honda MT/MB50]] was built to run to 10,000&nbsp;rpm, but the combined restrictions cause it to run out at around 6,500&nbsp;rpm.{{Citation needed|date=January 2010}} Illegal de-restriction of such models is extremely difficult, requiring replacement of piston, barrel, carburetor and CDI electrics, and possibly the crankshaft and the exhaust as well.

By the 1980s, it was obvious{{Weasel-inline|date=January 2010}} that the pedals on mopeds were no longer performing any useful function, in fact the performance of the {{convert|49|cc|1|lk=on}} engines available was delivering speeds in excess of {{convert|80|km/h|-1|lk=on}},{{Citation needed|date=January 2010}} a common model in the UK being the [[Yamaha FS1E]].{{Citation needed|date=January 2010}}  Due to emerging safety concerns that resulted from the considerably greater speeds that newer mopeds were capable of reaching, western jurisdictions introduced new regulations (eg UK in 1977)[http://www.classicbikepictures.co.uk/c319/p2117/yamaha%C2%A0fs1e.html Yamaha FS1E Classic Bike Pictures]{{Citation broken|date=January 2010}}, limiting the speed of these "mopeds" to {{convert|30|mph|0}} (and abolishing the requirement for pedals).{{Citation needed|date=January 2010}}  In some cases, the power restrictions (such as perforated plates in the inlet tract) were primitive and easy to bypass,{{opinion}} but the larger manufacturers such as those from Japan restricted engine breathing with smaller carburettors (eg {{convert|16|mm|2|lk=on}} replaced with {{convert|13|mm|2}}) and modifications to cylinder ports and exhausts.{{Citation needed|date=January 2010}}  Then they fitted [[CDI]] ignition systems tuned to limit maximum engine revolutions; the [[Honda MT50|Honda MT/MB50]] was built to run to 10,000&nbsp;rpm, but the combined restrictions cause it to run out at around 6,500&nbsp;rpm.{{Citation needed|date=January 2010}} Illegal de-restriction of such models is extremely difficult, requiring replacement of piston, barrel, carburetor and CDI electrics, and possibly the crankshaft and the exhaust as well.