Remember that Honda ATC50 that was rumored, but never came out? I was kind of bored this afternoon and was digging around the US patent office and found this (Pictures attached below). Checkout the front suspension! I'm not totally positive if its a 50 or maybe an improved ATC70. Look at the similarties in design between it and Yamaha Tri-Zinger, it even has inverted front forks just like a zinger! And this is the killer part, the patent was submitted in 81, which means that there is a VERY good possibility that Yamaha copied this design, or maybe even Honda sold it to them. The similarities are way to close to be coincidental.
I've found some other really cool stuff too, like 2 different designs of a threewheeler hauler design that doesn't use a trailer. Instead, a complex design of bracketry simply goes onto a normal ball hitch and it holds the threewheeler in place (Like those bicycle haulers you see). Theres also preliminary designs from Yamaha for a trike from 1978. I'll post some more stuff, this is just to friggen cool. Maybe I'll find something for the ATC500R
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