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Post by Fox on Apr 22, 2010 11:47:52 GMT -5
I have acquired quite a few "stock" weights over the past couple years from various 50cc scooters so yesterday I went and got a cheapy Harbor Freight digital scale and weighed them all individually and what I found was: Some are 6.5 gram +/- .1 grams, and some are 8.5 gram +/- .1 grams The point of this post is: You can't trust that all the factories use the same weights in their scooters so a scale is a MUST-HAVE item in your arsenal. Nice little scale BTW: www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93543 |
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Post by 90GTVert on Apr 22, 2010 12:08:06 GMT -5
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Post by Fox on Apr 22, 2010 18:29:21 GMT -5
That scale looks kinda the same mine but mine doesn't have a lighted display.  I like the fake weed in the pic.   |
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Post by 90GTVert on Apr 22, 2010 21:27:23 GMT -5
I think they're using them to weigh sugar or flour or something in some other listings.  |
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Post by stepthrutuner on Apr 22, 2010 21:38:19 GMT -5
I have acquired quite a few "stock" weights over the past couple years from various 50cc scooters so yesterday I went and got a cheapy Harbor Freight digital scale and weighed them all individually and what I found was: Some are 6.5 gram +/- .1 grams, and some are 8.5 gram +/- .1 grams The point of this post is: You can't trust that all the factories use the same weights in their scooters so a scale is a MUST-HAVE item in your arsenal. Nice little scale BTW: www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93543Hey. Now that you have so many and can weigh them you can drill them out to custom weighed sets. That's what I did with the stock ones on my Derbi. Originally 7g now 4.5g. Still using drilled factory weights after 8000+ miles and no flat spots. |
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Post by 2strokd on Apr 23, 2010 8:02:39 GMT -5
I use mine all the time like in the pic. Ya see im a fulltime drugdealer and prostitute aid on the side. I use the scales to weigh my product, never thought about using them for my scooter parts! Good idea!  ...... |
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Post by stepthrutuner on Apr 23, 2010 11:14:12 GMT -5
 Great battery life on mine! |
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Post by 2strokd on Apr 23, 2010 11:38:16 GMT -5
No kiddn, right! I have a pair of those also but of course the digital ones are nice tho
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Post by lackthereof on Oct 5, 2010 4:26:17 GMT -5
I just saw the thread in the troubleshooting board mentioning the two different case sizes, and it reminded me of this thread. Is there a pattern here between which weights came from which engines?
It seems like the long case GY6 would have a longer CVT belt. The long belt would need to be more tightly tensioned than the shorter one, so it would need a stiffer contra spring. And then it would need heavier weights to overcome the stiffer contra spring.
But that's all just guesswork.
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Post by 90GTVert on Oct 5, 2010 7:24:34 GMT -5
There may be some logic to it, and what you are saying makes sense.... but with a lot of Chinese scoots the theory is they use whatever is available or cheapest when they're built. One thing that throws your theory off, at least for minarelli engines, is that my long case scoots had 4g rollers and my short case had 5g rollers. Both had the same contra. I have a feeling it's gonna work the same way on the GY6, but I haven't tuned enough of their transmissions to know. Also, if the scoots with heavier rollers had stiffer contras, they should be performing closer to the scoots that come with lighter rollers and "standard" contras.
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Post by scooterrebel on Oct 5, 2010 13:56:10 GMT -5
I think Brent is right, just depends on what box of weights they had come in that day and that is what they used.
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