why did Yamaha go backwards in technology and make a pushrod actuated V twin?

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chopperchopster

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I think its 105 cubic inches.I allready know they are copying Harley cant remember the name of it they have been building it for a few years.But why bother building it?
its in the star line of Yamaha bikes,maybe magz has an idea why they would build this.they even have one to race with called the dragstar.
 
It does sound dumb but it is to compete in the American market. Everybody calls it copying but it is actually competing...They are just giving the American buyers what they have shown they want in a motorcycle...
 
Hmmm, backwards in technology. Just because an idea or design is old, doesn't mean it doesn't do the job adequately. With 105 ci, the pistons are probably big as coffee cans and they are what limit rpm, not the valve train. Do you remember the V-twin CX500 Honda of the 80's? It had pushrods and would rev to 9,500 rpm. I guess if it does the job, why make it more complicated and expensive than necessary?

That said, if you ask me, I suspect using a pushrod design was to do away with the space need for a cam chain. The Yamaha engine does appear much lighter and more "airy" than some of the heavy looking, blocky V-twins that use cam chains. Probably a case of fashion more important than function.
 
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