Comments on: 2010 Yamaha YZ450F Turns Cylinder Around – Air Travels Straight Through

By: tom

tom — Fri, 06 Nov 2009 03:07:18 +0000

Yamaha does it again.If we can remember they were the first to bring into production the monoshock . And how about the first water cooled production mx bike.What about the first to production power valved mxer .And i thnk they had something to do with Olins and the cartrage fork. Anyway my point is i dont think they were the origanal but they were the first to production for what ever reason. And the next year everybody followed suit. And now the reverse jug, Wow you go yamaha . I suspect next year we will see everybody with reverse cylinders.

By: Paul

Paul — Thu, 17 Sep 2009 12:26:47 +0000

Reverse cylinder heads etc. have a look at the Synergy Q450, this has a reverse head, carbon frame, Ti valves. I was lucky enough to do some design work on this about 5 years ago, its a thing of beauty to say the least!

By: kawi Zrider

kawi Zrider — Tue, 15 Sep 2009 05:47:44 +0000

wayback is right, cannondale had all these features nearly ten years ago! they just didnt have the huge r&d money to work out all the bugs. tin man 2, i agree, give me a clean 2-stroke already! I miss them so!

By: Gino

Gino — Mon, 14 Sep 2009 12:24:23 +0000

As Dean said, Yamaha already had a model which had this engine configuration, I owned one of the last TZR250 Reverse Cylinders, a 1993 SP model that had UD front forks and deep braced swingarm, alas it was totalled by a drunk driver who knocked me off it.
http://www.siegertyamaha.com/MotorradVerk/9070.jpg

By: MikeC

MikeC — Sat, 12 Sep 2009 04:32:44 +0000

Battery-less EFI has been around in snowmobiles since at least the late 90′s and the Arctic Cat versions (basically Suzuki engines) required less than 3 revolutions of the crank to fire up. This on a twin or a triple This system is awesome in application. Should reduce, or eliminate the need I have to kick til my leg is as big as a tree stump when the bike falls over and floods. I can’t wait to ride one.