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Post by hjorvar on Apr 3, 2014 17:42:35 GMT -5
Hey guys and girls. New member here
I have a 50cc 4 stroke gy6 139qmb motor (long case)
I need i little help. I am thinking about buying a new clutch and variator since my scooter is driven 4423 km and my old
belt went into pieces.
I have found the parts i need for about 40 bucks but should i rather go to performance clutch and variator? is there a lot of difference in acceleration? my scooter is orginal and is mostly used to go from a to b.
If so wich performance site should i look for the parts i need??
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Post by 90GTVert on Apr 3, 2014 21:09:34 GMT -5
 Don't buy a no name belt. The cheap Chinese belts break prematurely. Some of us have had them fail on the first ride or rides. I broke quite a few before I realized it was the junk belt and not something else in my setup. Go with Bando or Gates. A performance variator is not a bad idea. Something like the Koso on eBay cheap. Other members have given it good reviews and it's not that much more than a stock replacement. I don't really think these engines need a performance clutch. Most of the time you can get a great launch with a stock clutch just using stiffer clutch springs and/or lightening. Do a full cleaning and inspection, because belt dust and chunks go everywhere and you've got enough miles on there anyway that it's worth it. |
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Post by dan50 on Apr 4, 2014 0:02:25 GMT -5
I thought a longcase 139QMB uses a 729/17/30.
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Post by Upgrayedd on Apr 4, 2014 0:30:44 GMT -5
Hey guys and girls. New member here
I have a 50cc 4 stroke gy6 139qmb motor (long case)
I need i little help. I am thinking about buying a new clutch and variator since my scooter is driven 4423 km and my old
belt went into pieces.
I have found the parts i need for about 40 bucks but should i rather go to performance clutch and variator? is there a lot of difference in acceleration? my scooter is orginal and is mostly used to go from a to b.
If so wich performance site should i look for the parts i need?? I've grabbed a couple of my parts from stores.ebay.com/Mopedfactory they have low prices on belts and some other stuff, but they ship from China so it may not be a good option if you're in a hurry. |
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Post by hjorvar on Apr 4, 2014 13:50:32 GMT -5
Thanks for the replays guys, nice too know wich brand too buy, yes my scooter uses 729,17,7 30
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