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dogmeat
Joined: 10 Jun 2008
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Location: Near London, England.
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dogmeat
Joined: 10 Jun 2008
Posts: 109
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Location: Near London, England.
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 Posted: Sun Jul 27, 2008 6:03 pm Post subject: |
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| Anyone?
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TJ
Joined: 22 May 2008
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Location: Cornwall UK
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| Posted: Sun Jul 27, 2008 8:06 pm Post subject: |
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don't quote me on this... but isn't a 11g a bit much?_________________ One very poorly Kinroad  - Kimi
Yamaha XT125 X - Razza  |
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dogmeat
Joined: 10 Jun 2008
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Location: Near London, England.
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Toddy321
Joined: 09 Jun 2008
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Location: Livingston,Scotland
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| Posted: Sun Jul 27, 2008 10:22 pm Post subject: |
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| Take your rollers out and weigh them, divide by 6 gives you your weight size, then get some 1 or 2 grams less.
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Baotian BT125-t9
SymJet50(SOLD)bybybaby
Sym Joyride 200,needs repairs
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thebiggreenie
Joined: 12 Feb 2008
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Location: Gillingham, Kent (C.S.C Kent & Medway)
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Yellow Scooter
Joined: 20 Mar 2007
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Location: North Carolina USA
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larry8
Joined: 14 Oct 2006
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Location: Cleveland, Ohio USA
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| Posted: Mon Jul 28, 2008 7:42 pm Post subject: |
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My 125 had 11.2gm roller weight stock.
I put in an oversize variator (115mm) with 9gm weights and it did improve the acceleration.
Roller weights are cheap so get them and try for yourself and if your not satisfied then buy a set of 10gm weights.
One other thing is the add does not say what the diameter of that front pulley is. Could be it is the same as the stock pulley (110mm).
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'08 Piaggio MP3-400 as yet unnamed & finally fixed
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Yellow Scooter
Joined: 20 Mar 2007
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Location: North Carolina USA
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larry8
Joined: 14 Oct 2006
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Location: Cleveland, Ohio USA
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| Posted: Wed Jul 30, 2008 12:21 am Post subject: |
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It's true that one cannot believe the specs listed on the Ebay adds. Nor can one believe most of the specs in the owners manual. And last one cannot believe half of the BS specs that the brick and morter dealers tell you.
Thats why we have to learn all that stuff ourselves by doing all the maintenance and servicing ourselves.
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Larry8 and my babies:
'08 Piaggio MP3-400 as yet unnamed & finally fixed
'67 BMW R69S - "toots" in rehab
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halley
Joined: 01 Jul 2008
Posts: 533
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Location: Connecticut
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| Posted: Wed Jul 30, 2008 1:34 am Post subject: |
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| Yellow Scooter wrote: | | Isn't that what the 'specs' are supposed to be? Specifics? |
Well, to be fair, 'specs' are short for 'specifications', which are not the same thing as design detail specifics. The specifications call for goal-oriented or statute-defined things like max load, seat height, max displacement, horsepower, max decibels noise, etc. Often accompanying the specifications are maintenance specifics like belt type, oil type, battery type, fuel type.
But as an engineer I would not expect the 'specifications' to list roller weights, variator diameters, fork weld loading figures, wire gauges to the head lamp, or other incidental design details. Any design which fits the specification would be acceptable, and thus allow for design variation and innovation.
That said, I would LOVE to see a single FAQ chart of all of these design details which we discuss here, a chart of stock and recommended roller weights, variator diameters, clutch spring values, spark types, and so on, listing for all common GY6 variants at 50cc 150cc and 250cc. |
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Yellow Scooter
Joined: 20 Mar 2007
Posts: 3947
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Location: North Carolina USA
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I know I'm asking way too much from these cutting-&-pasting sh!theads.