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The new Yamaha Sport/Hi-performance quad!

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  #1  
Old 04-19-2000, 02:24 PM
86atc250r's Avatar
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If anyone is interested, here are the pics
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.
 
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Old 04-19-2000, 05:48 PM
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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!
 
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Old 04-19-2000, 09:33 PM
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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....
 
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Old 04-19-2000, 10:13 PM
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that looks like a 400ex wit different plastic to me.
 
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Old 04-19-2000, 11:11 PM
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Gabe, come on, tell us, is this a prank! Looks fishy to me.
 
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Old 04-20-2000, 01:44 AM
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Those are the "secret spy photos" from the latest Dirt Wheels mag. No computer mutation there
 
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Old 04-20-2000, 02:02 AM
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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.
 
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Old 04-20-2000, 01:18 PM
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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.
 
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Old 04-21-2000, 11:16 AM
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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.
 
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Old 04-23-2000, 08:34 PM
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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)

 


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