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Designed by Charles Valentine (Arkansas, USA) the TR Hog is a 3-wheeled Harley built for paraplegics. Chrarles Valentine has created over 30 hotrods and motorcycles and so knows the design is functional, especially as a paraplegic was invited to roll his wheel chair up and successfully entered the vehicle placing his folded chair on the rack behind him. Powered by a 750 Yamaha engine, Dave Norton (Shrike) was involved and after a number of engineering studies believes that the TR Hog is a potentially fine machine. A US Patent Attorney has also commented that the reverse mechanism is patentable and that the whole machine is possibly also patentable as a concept
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