Ducatisti Forum - View Single Post - Cunning oil cooler plan..so fiendish...
View Single Post
Old 28 Jun 08, 02:34 PM   #17 (permalink)
geo7863
Ducati Legend
 
geo7863's Avatar
 
Join Date: Jan 2008
Location: 100 m iles north of Lagos, Its hot and sticky here, thats not just my underpants I'm talkin bout!
Posts: 1,110
geo7863's Gallery
Bike: Reborn '92 900 SL

Quote:
Originally Posted by zimbo View Post
Also, had you considered why there are two slots in the fairing? Could it be that they are there to reduce a low presure buildup behind the fairing nosecone at speed, which may possibly affect airflow over the air intake or around the vertical cylinder, and that diverting or blocking this air stream may have adverse aerodynamic effects elsewhere?

I wouldn't consider a second oil cooler necessary at all unless you have done a lot of work on the engine (big bore, high compression, porting, carburation etc). Just my opinion, of course.
No... air behind the slots, assuming the slots were blocked and there was absolutely nowhere for that air to go to, would have a static pressure of 1 ATM, the air flowing around the fairing and under the nose of the bike would have dynamic pressure, which is lower than static pressure and dependent upon the speed of the air, so in effect the air behind the slots (covered) would have an overpressure, compared to the air flowing past it

With such a flat square frontage on the 900ss most of that 'dynamic' air would be just turbulent air anyway, bubbling all around the back of the fairing.

Aerodynamics lesson over switch off brain.... Cor looks nice with the oil cooler there though dont it mate..
geo7863 is offline   Reply With Quote