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Reeds
Mar 1, 2011 22:00:03 GMT -5
Post by dude on Mar 1, 2011 22:00:03 GMT -5
I have seen reeds different thickness .25-.30-.40 I am sure there are more. What effect does the thickness change? Which do use form stock to high end cyl. Does it change with different pipes?
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Reeds
Mar 1, 2011 22:13:09 GMT -5
Post by 2strokd on Mar 1, 2011 22:13:09 GMT -5
The thickness effects the tension, or strength to open them. Kinda like valve strength on a car.
Real high lbs springs keep your valves from floating. Stiffer (thicker reeds) help keep them from floating or fluttering at higher RPM,s. Thinner reeds are better for throttle response and lower RPM apps as far as i know.
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Reeds
Mar 2, 2011 3:04:08 GMT -5
Post by lshigham on Mar 2, 2011 3:04:08 GMT -5
Yup, thinner gives better bottom end and thicker better top. It's not quite that straight cut though, too thin and they'll break, too thick and you'll loose bottom and top end power as they cannot open fully.
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Reeds
Mar 2, 2011 11:02:10 GMT -5
Post by Enviromoto on Mar 2, 2011 11:02:10 GMT -5
Polini recommends using a .35 on the engine side and a .30 on the intake side of the reed cage. In fact that's how they sell their replacement reed sets for the Zuma 50. They say it helps with the pulse of the engine keeping the engine side from fluttering as 2t said, and improves throttle response.
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