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  #1  
Old 07-05-2005, 10:41 PM
brianmef brianmef is offline
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Default How does a variator work?

I know what a variator looks like and the parts that are included with one but how does it work? I have a general idea on what it does but if possible, could someone explain in detail? Thanks.
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2006 SCHWINN SPORT LX 150CC

PREVIOUS SCOOTERS I'VE OWNED:
2002 YAMAHA ZUMA
2001 YAMAHA JOG
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  #2  
Old 07-05-2005, 10:53 PM
XPS1210
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when in the idle position, the rollers in the tray are tight next to the crankshaft... when the engine speeds up, inertia causes the rollers to press out on the 2 pulley halfs and spin away from the crankshaft hence raising the belt to a larger diameter pulley.

that pretty much sums it up...
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Old 07-05-2005, 11:14 PM
brianmef brianmef is offline
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So because of the weights and inertia, the 2 plates expand and this causes the belt to slip on to the gear? And when the plates aren't explanded, this causes the belt to slip back onto the smooth collar? A heavier weight would cause the plates to expand sooner?
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2006 SCHWINN SPORT LX 150CC

PREVIOUS SCOOTERS I'VE OWNED:
2002 YAMAHA ZUMA
2001 YAMAHA JOG

Last edited by brianmef; 07-05-2005 at 11:15 PM.
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Old 07-06-2005, 08:42 AM
XPS1210
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yes... but could cause the bike to not get into the "power band" it's a ballance of when they expand... and you need to tune it to your bike
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Old 07-06-2005, 08:46 AM
brianmef brianmef is offline
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ok, thanks for the info.
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2006 SCHWINN SPORT LX 150CC

PREVIOUS SCOOTERS I'VE OWNED:
2002 YAMAHA ZUMA
2001 YAMAHA JOG
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  #6  
Old 07-09-2005, 02:52 AM
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anothermbdusted anothermbdusted is offline
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so jered what is a good weight to start off with? the same as stock or what? as i need to maintain more mph going up hill...i lose like 4-5mph going up hills and well it sucks. on the staights its great although bottom end could be a little faster for my likings....thanks
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Old 07-09-2005, 11:22 AM
XPS1210
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there is no golden weight for every scooter...

heck even different zuma's take differnet rollers with different parts... (IE pipe, var, cylinder, etc)
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Old 07-09-2005, 11:58 AM
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Iceman Iceman is offline
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Cool

I keep hearing reference to doppler variator. Can someone explain how it works and pm me any link that could get me more infor? At this point I'm just curious and always looking for an easier way.
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Old 07-09-2005, 12:21 PM
XPS1210
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it's got permently mounted weights as apposed to rollers...

it's not a performance variator but you never have to change rollers once you get it tuned...
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