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  #1  
Old 11-07-2007, 06:32 PM
J.D. J.D. is offline
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Default New Gas Gas 4-stroke Trials Bike

Nice pics of new gas gas 4-stroke trials bike at:

http://www.trialscentral.com/cms/sho...articleID=3496


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  #2  
Old 11-07-2007, 07:38 PM
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Metalefty Metalefty is offline
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Wow, that jug looks like a weird 2 stroke. I assume that's the new lateral valve engine.
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  #3  
Old 11-07-2007, 08:23 PM
J.D. J.D. is offline
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very compact looking 4-stroke engine....nice


-J.D.

'01 Gas Gas 300xc
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Old 11-07-2007, 11:02 PM
TooFastTim TooFastTim is offline
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Quote:
Originally Posted by Metalefty View Post
Wow, that jug looks like a weird 2 stroke. I assume that's the new lateral valve engine.
WTF is a "lateral valve"?

Anyway it's an FI sidevalve. Pretty kewl looking. I suppose I'll be painting my Raga rep red now.
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Old 11-08-2007, 07:25 PM
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Side valve motors are torque monsters.
All those tugs you see at the airports have side valve motors.

I wonder why they called it a TXT?(same as the 2stroke)
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Old 11-09-2007, 09:40 AM
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Metalefty Metalefty is offline
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Quote:
Originally Posted by TooFastTim View Post
WTF is a "lateral valve"?

Anyway it's an FI sidevalve. Pretty kewl looking. I suppose I'll be painting my Raga rep red now.
When I first started hearing about these motors last winter, that is what they were being called. Doesn't lateral mean to the side?
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Old 11-09-2007, 06:20 PM
AZRickD AZRickD is offline
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Old school.

IIRC, (or maybe it was "side valve") they were very common in 1920-ish +/- motorcycles and automobile engines.

Rick
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Old 11-11-2007, 01:53 PM
TooFastTim TooFastTim is offline
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I suppose lateral would be an unusual but correct way of describing the valves.
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Old 11-11-2007, 02:47 PM
jeffd jeffd is offline
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This is the same motor designed that is referred to as a flathead? Right? I once owned a 1947 willys jeep that came stock with a flathead 4 motor...

The new gasgas motor should be simple design, very light with loads of low end torque - downside will be trade-off on top end power.

A friend of mine once told me something that comes to mind... "The dog of simplicity will piss on the tree of technology every time..."

jeff
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Old 11-11-2007, 03:38 PM
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For a trials bike it makes perfect sense. There is nothing higher on that motor than a 2-stroke. Who needs a DOHC motor? Its just like the 4HP Techumseh in your first "mini-bike" . Well, for guys around my age anyway.
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