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Adult tricycles are fun as hell and great for transporting everything from groceries to luggage.
The Raleigh "Twenty" was originally fitted with 20" × 1-3/8" wheels and tyres (ISO 35-451), but most export versions were sold with 20" × 1.75" wheels and tyres (ISO 47-406) – the same as BMX bicycles. Many were sold as either single speed with coaster brake or fitted with a Sturmey-Archer AW three-speed hub. The New-Zealand-manufactured ...
The founder of the company, Rosario Di Blasi, began development of a folding scooter in 1952, which by 1968 had evolved into a Zanetti-powered folding tricycle called the DIBLA 7 that was shown at the Turin Auto Show as a prototype. Finally in 1974 Di Blasi began production of a folding moped with a Franco Morini motor and single-speed ...
Small wheels may be welcome in indoor locations where large wheels are not. Small-wheel bicycles are adult bicycles that have wheels of 510 mm (20 in) nominal diameter or less, which is smaller than the 700c (522 mm), 660, 700, 740 mm (26, 27.5, 29 in) sizes common on most full-sized adult bikes.
One common arrangement is an ISO 559 (26-inch) rear wheel and an ISO 406 or ISO 451 (20-inch) front wheel. The small front wheel and large rear wheel combination is used to keep the pedals and front wheel clear of each other, avoiding the problem on a short wheelbase recumbent called "heel strike" (where the rider's heels catch the wheel in ...
Compared to adult models, children's trikes are simpler, without brakes or gears, and often with crude front-drive. Child trikes can be unstable, particularly if the wheelbase or track are insufficient. [22] Some trikes have a push bar so adults can control the trike. [22] Child trikes have frames made of metal, plastic, or wood.