fontyyy wrote:
Now that's interesting, my '28, open (32mm) carbs, Tyga pipes, unknown race cans, 99db at Cadwell yesterday.

94db with the airbox.

Both measured by the same guy in the same manner, i.e. as the ACU say.

Fontyyy, both Steve and I have a curiosity regarding your cans! Your '28 certainly seems to work rather well (when it has good pistons/rings!), but the cans look restrictive. We are both convinced that they are holding the motor back slighly, even if it's only a couple hundred RPM and 1/2hp. A restriction is a restriction however, and a restriction in the cans will almost certainly make them quieter.
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Andy.
NSR-WORLD.COM

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