| Author |
Message |
    
Werewulf
| | Posted on Thursday, November 20, 2003 - 09:52 am: | 
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will the optional blast fairing fit a m-2?? |
Buell2001b
| | Posted on Thursday, January 06, 2005 - 04:00 pm: |
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All this is very interesting, its nice to see how engineers think,i am kind of use to it becuase I am an architect and I work with them all the time. I myself is fascinated with ideas of how to make things better. Im sure someone has already thought of it, but instead of deflecting air would the idea of using it to your advantage be possible.
maybe having perforated parts to let air thru instead of deflecting it.
maybe using the force of the wind to increase speed to the bike(forced air).
I know this might sound kind of dumb but as an architect designer i don't focus on numbers but i think graphically how things can interact together.
thanks for reading this |
Davegess
| | Posted on Thursday, January 06, 2005 - 05:56 pm: |
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2001, you need to dig up some old Cycle Worlds were Erik is mentioned talking about WW2 fighter taking in cool air and expelling engine heated expaned air thereby creating thrust. He has done in a small way on the RW and RR bikes |
Aesquire
| | Posted on Thursday, January 06, 2005 - 10:21 pm: |
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Both the P-51 Mustang & the Supermarine Spitfire got some boost from the Meridith effect. ( named for the guy who figured it out ) The P-51 was the champ for it though, more than 200 hp recovered from the engine cooling. Very careful design lets you use the expansion of air as it heats to boost speed. ( note the Mustang was faster with the same engine as the Spit'. ) That long cooling duct on the bottom of the plane has a variable vent out the back to keep the cooling air at the right speed.
Not very practical on a bike, usually, either radiator/fairing design, or an enclosed engine with cooling ducting.
Perforations in a fairing would create mucho drag, look at a whiffle ball. The RR1000 design is still used with modification in land speed racing. |
Reepicheep
| | Posted on Friday, January 07, 2005 - 07:17 am: |
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quote:Buell is the most engineering driven company in motorcycling
I can't believe I missed that quote when Steve A originally posted it. It is so profound, and so true, and I don't know why it did not occur to me before. It explains SOOO much, not just about why my bike is like it is, but why *it* is *my* bike. |
Henrik
| | Posted on Friday, January 07, 2005 - 09:19 am: |
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So, Bill ... you're saying the XBs are Geek bikes? 
Henrik
(Yep, I like them too  ) |
Bomber
| | Posted on Friday, January 07, 2005 - 09:45 am: |
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I understand the perforations would cause a lot of drag -- even my math-challenged, non-engineer noggin can wrap itself around that ;-}
what's the point of the dimples in golf balls -- I would think that they would add drag as well, so I"m guessing they are for stability?
I love listening to smart people talk! |
Mikej
| | Posted on Friday, January 07, 2005 - 09:54 am: |
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http://news.bbc.co.uk/sportacademy/bsp/hi/golf/equipment/other_gear/html/ball.st m
re: golf ball dimples
quote:Dimples
The surface is 'dimpled' to increase lift and reduce air resistance.
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Henrik
| | Posted on Friday, January 07, 2005 - 10:06 am: |
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I seem to recall both holes and dimples having to do with micro vortexes along the surface of the bike/golf ball. These vortexes, I believe, create a slippery air layer minimizing turbulence as air rushes over the surface.
Henrik |
Mikej
| | Posted on Friday, January 07, 2005 - 10:11 am: |
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For a tangent, look into surface design and finish of rowing shells. |
Blake
| | Posted on Friday, January 07, 2005 - 10:56 am: |
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The best improvement most can achieve in motorcycling aerodynamics is to ditch the loose fitting gear for custom tailored leathers.
I believe dimpling helps reduce the thickness of the boundary layer especially so for some ideal cases, like for a spinning sphere flying through undisturbed air. |
Court
| | Posted on Friday, January 07, 2005 - 12:59 pm: |
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>>>I believe dimpling helps reduce the thickness of the boundary layer
Who wants to volunteer to explain to Timbo that we are going to "pre-peen" him prior to his next performance? |
Bomber
| | Posted on Friday, January 07, 2005 - 01:26 pm: |
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I'm thinking pre-peening might be slightly preferable to post-peening," but have little basis for comparsion
thanks for the explanation, fellas! I learned something today, which explains my desire for a nap! |
Sarodude
| | Posted on Friday, January 07, 2005 - 01:31 pm: |
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Wait, we're gonna peen on Timbo? Who said anything about watersports?
-Saro |
Dfbutler
| | Posted on Thursday, July 14, 2005 - 02:12 am: |
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I added the 3" taller windshield from American Sport Bike and turn about 150 less RPM at 80, nicer ride too with less buffeting. |
Panic
| | Posted on Thursday, July 28, 2005 - 07:56 am: |
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"turn about 150 less RPM at 80"
???
How does the fairing affect your sprocket sizes? |
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