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Oct 7th, 2011, 8:25 am
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#1 (permalink)
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Senior Member
Join Date: Nov 2010
Posts: 581
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Air intake expansion tank?
Does anyone knows the purpose of the air intake expansion tank (located between the two air intakes under the key switch.
Guessing it has to do more with noise reduction rather than actual engine performance... any idea what the effect of removing it would be (less back pressure maybe)?
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2010 SF tricolore.
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Oct 7th, 2011, 12:29 pm
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#2 (permalink)
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Senior Member
Join Date: Aug 2009
Location: Athens, Agios Dimitrios, Greece
Posts: 1,609
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it has been threaded before here...i think no one is really sure about it...
i guess its there for a reason! :-P
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'04 YAMAHA 660XTX (sold)
'07 KAWASAKI Z750 (sold)
'10 DUCATI Streetfighter S
'01 KYMCO BW 125cc
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Oct 7th, 2011, 12:31 pm
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#3 (permalink)
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Senior Member
Join Date: Nov 2010
Posts: 581
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I'll check... probably just extra weight and sound damping to meet emission.
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2010 SF tricolore.
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Oct 7th, 2011, 12:35 pm
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#4 (permalink)
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Senior Member
Join Date: Aug 2009
Location: Athens, Agios Dimitrios, Greece
Posts: 1,609
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it could be more though...i guess only retrosbk or guido can really answer this one...
__________________
'04 YAMAHA 660XTX (sold)
'07 KAWASAKI Z750 (sold)
'10 DUCATI Streetfighter S
'01 KYMCO BW 125cc
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Oct 7th, 2011, 12:39 pm
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#5 (permalink)
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IHMC Est. 2010
Join Date: Jan 2009
Location: Vancouver, BC, Canada
Posts: 1,739
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It's that hymen thingy.....jeeez. LOL
Ask Sputz, even he can tell you 
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F1098S 'F' is for 'freezerburn', 'S' is for 'sick'
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Oct 7th, 2011, 12:44 pm
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#6 (permalink)
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Senior Member
Join Date: Nov 2010
Posts: 581
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I mean the confusing part is that it's not even sealed... air goes thru the air intake to both the airbox and expansion tank...
so what would the difference be between expanding in the air or in the box since it's not sealed to begin with!
__________________
2010 SF tricolore.
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Oct 7th, 2011, 12:59 pm
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#7 (permalink)
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IHMC Est. 2010
Join Date: Jan 2009
Location: Vancouver, BC, Canada
Posts: 1,739
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Search Helmholz on this forum 
__________________
F1098S 'F' is for 'freezerburn', 'S' is for 'sick'
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Oct 7th, 2011, 1:01 pm
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#8 (permalink)
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Senior Member
Join Date: Aug 2009
Location: Athens, Agios Dimitrios, Greece
Posts: 1,609
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sputs tell us please!! the knowledge should be spread..how do we break that hymen???? :-P
__________________
'04 YAMAHA 660XTX (sold)
'07 KAWASAKI Z750 (sold)
'10 DUCATI Streetfighter S
'01 KYMCO BW 125cc
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Oct 7th, 2011, 1:08 pm
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#9 (permalink)
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Senior Member
Join Date: Nov 2010
Posts: 581
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Lol, perfect found my answer here:
Helmholtz Resonator
Now just gotta try to figure out how to improve this!
__________________
2010 SF tricolore.
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Oct 7th, 2011, 1:21 pm
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#10 (permalink)
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Senior Member
Join Date: Aug 2009
Location: Athens, Agios Dimitrios, Greece
Posts: 1,609
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ok so with the Ducati Bigger air - ducts the Helmholz SHOULD be removed?
__________________
'04 YAMAHA 660XTX (sold)
'07 KAWASAKI Z750 (sold)
'10 DUCATI Streetfighter S
'01 KYMCO BW 125cc
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