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Posted by: Mike Chero
86atc250r,
VERRRRRRYYYY NICE! I hope you didn't have to kill too many people to get these. I just wish they'd shown the motor though. Still all in all, it looks sharp! Kudos!
Posted by: SaMs0nOLD
I wonder if a Banshee motor would fit in there? Be a nice conversion I would think.
87 Banshee
99 banshee
Posted by: Mike Frey
Gabe, come on, tell us, is this a prank! Looks fishy to me.
Posted by: rottwolf
How can you assume it's a 660cc engine? The pictures show hardly anything. It can't be a 400ex...It's a Yamaha! I'm gambling to say that I believe it's gonna be a pretty cool bike. I'm sad that they want to compete with the ds650! I mean, the banshee barely got beat by it in a drag race...2/10 of a second..come on. Anyway, I like the way the cannondale is looking, and hope they compete with that; a more all around type of bike with plenty of power. Anyway...
Later
Posted by: qrdude
Those are the "secret spy photos" from the latest Dirt Wheels mag. No computer mutation there :)
Posted by: 86atc250r
If anyone is interested, here are the [url=http://home.earthlink.net/~gellett/yamaha]pics[/url]
[b]note from atvbbs: with 9000+ readers, you are requested to post a topic on one forum only. Your post in the Honda forum has been deleted. Thank you for sharing this info with the readers.[/b]
Posted by: 86atc250r
I originally posted in the Honda group because I knew there would be quite a few people there interested in this new machine... Then I though, this may be a better place.
Unfortunately the tools to delete a post are no longer available to us. It's not like I posted in every group, didn't figure 2 posts would hurt anyone or unnecessarily burden the server, even kept the text short and to the point & didn't attempt to post the pics to the forum....
Posted by: 86atc250r
Nothing fishy, just posted pics sent to me..... Upon inspecting the source photos (which are much larger), it almost appears air cooled. Which sure points to a Grizzly engine and unless they really do something to it will probably be disappointing....
Peak torque on the grizz engine is 28 ft/lbs @ 5500 RPM. Since HP and torque meet at around 5500 RPM on all engines, that puts this engine in the 28~30 HP range, unless the torque curve stays high as the RPM's climb.
Posted by: 86atc250r
Nope, someone else scanned them, and sent them to me to put on my webspace. Not everyone has a subscription, so I thought it would be nice to put them up for everyone to see.
I sure would think that Yamaha would use a liquid cooled engine, but in my pics I just really can't tell. I don't know what 600cc liquid cooled engine Yamaha has to stick in it.... I guess we'll find out soon enough...
Posted by: 86atc250r
The waiting is over!
Based on the fact that it really looks like the 660cc engine is the one, I have compiled some info and stuck it on my page.
I now have HP specs, compression ratio, transmission type, details on engine configuration, and even a sound file!! Enjoy!
[url=http://home.earthlink.net/~gellett/yamaha]Look here![/url]
Posted by: 86atc250r
I'm not interested in this machine for myself, just thought I would put up info for everyone that is interested. I like all high performance machines, but there's only a couple I would consider purchasing for myself. Like you, I am much more interested in the Cannondale.
The 660cc engine is the only logical choice I can see. I have been hearing from quite a few sources that it will probably be this engine, and given that I have also heard it will not be the 426 engine from a couple different places, it is really the only logical choice. I may be wrong, but no one else had any specs on this possible engine, so I took action, take it for what it's worth......
Posted by: J_Deshotel
Well actually torque and hp meet at 5252, but let's not be picky. Like you said, though, at 5500 rpm the hp will be 28 - 30 (29.3 if you do the calculations :-) Anyways, I doubt they'll use that engine anyway, at least I hope not. Wouldn't make much sense to me.
Posted by: killefitt
Well Yamaha surprised a lot of people with the YZF400 in motocross, and with the DS650 and Cannondale getting so much attention, and this bike essentially replacing the Banshee, I don't see it being any less than 45 HP, which in a light chassis with 10" suspension that handles would be a great machine. It also doesn't look any bigger than a 400EX so it certainly won't be a DS650, probably very close to the Cannondale I'm thinking.
Posted by: 250Thumper
that looks like a 400ex wit different plastic to me.
Posted by: lastwarrior
So you got the new dirtwheels mag nice scan!
Dirt Wheels also speculates that the new machine is liquid cooled (vent in front for air flow across the radiator)
