What does the flapper actually do? - Honda Motorcycles - FireBlades.org
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post #1 of 2 Old 06-25-2006, 11:03 PM Thread Starter
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What does the flapper actually do?

I guess I know what it does (opens and closes), but why?....what benefit does this have?

Just asking really, trying to chase down a nasty vibration at 5500rpm, and have the airbox open looking for loose bits.
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post #2 of 2 Old 06-25-2006, 11:19 PM
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Re: What does the flapper actually do?

It works in conjunction with the HTEV to create different airflow at different RPMs.
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