Detailed comparo - Desmosedici RR vs MotoGP Bike

bwhip · 12-14-2007, 07:49 PM

Interesting comparisions here:
: : : robotpig.net - Desmosedici RR

NorthernRR · 12-14-2007, 08:15 PM

I find it funny that they even try to draw comparisons between the two... the mgp bike is a truely awesome bike, while the Desmo is original in it's own form... can't compare...

phobe · 12-14-2007, 11:48 PM

First I've read of the effect of exhaust on aerodynamics.... interesting.

Anyone else look at that picture of the engine and wonder where the water jackets were?

slickwill · 12-15-2007, 10:23 AM

Funny, I have an article that claims the exact opposite effect of placing an exhaust in that location. I'll have to try to find it when I get back home to Des Moines.

ccwilli3 · 12-15-2007, 12:38 PM

really good read.

seamus · 12-15-2007, 01:19 PM

Quote:

Originally Posted by phobiaphobe

First I've read of the effect of exhaust on aerodynamics.... interesting.

Anyone else look at that picture of the engine and wonder where the water jackets were?

I didn't look that close at the engine but the exhaust exit seems counterintuitive to me (based on no scientific experiments whatsoever, of course

) Wouldn't an exhaust positioned at the top of the rear end like that cover the rider in a nice CO airflow at lower, street speeds based on the turbulence created from his own body?

phobe · 12-15-2007, 01:25 PM

Quote:

Originally Posted by seamus

I didn't look that close at the engine but the exhaust exit seems counterintuitive to me (based on no scientific experiments whatsoever, of course

) Wouldn't an exhaust positioned at the top of the rear end like that cover the rider in a nice CO airflow at lower, street speeds based on the turbulence created from his own body?

You and I know from experience riding 1000rrs.... That vaccuum you leave in your wake sucks the exhaust gas back and makes you smell like you were riding a snowmobile.

Of course, my wake is not as impressive as yours.

seamus · 12-15-2007, 06:35 PM

Quote:

Originally Posted by phobiaphobe

You and I know from experience riding 1000rrs.... That vaccuum you leave in your wake sucks the exhaust gas back and makes you smell like you were riding a snowmobile.

Of course, my wake is not as impressive as yours.

If you look closely, you can see light bending around it.

When I rode from NY to KY at "slightly above freeway speeds" the back of my jacket was coated with carbon and smelled like, well, exhaust. That would say to me that the exhaust is not only not having that much of an effect, but it's also basically just getting tossed around in the turbulence.

I know they said the pics were not accurate and scientific but can the exhaust really provide that much of a difference in aerodynamic forces? Not the location of the can, but the actual exhaust gases?

slickwill · 12-15-2007, 08:19 PM

This is a very busy webpage but kind of goes into the explanation of why an exhaust shouldn't point upward. I'm not sure it will work as a direct link because I had to register my email to get to this page. You have to skip down a little ways to get to the aero stuff.

Harley Power !

seamus · 12-15-2007, 10:09 PM

Nice find. Now go find part two so I can keep learning

Jetbdude · 12-18-2007, 03:23 PM

Bwhip, here's your chance......

Ducati Desmosedici For Sale - 13x Forums

bwhip · 12-18-2007, 07:23 PM

12-14-2007, 07:49 PM	#1
bwhip Every ride a gift... Join Date: 12-13-2006 Location: Idaho, USA Bike(s): 1098S-SXV550-849-Ruckus Posts: 3,899	Detailed comparo - Desmosedici RR vs MotoGP Bike Interesting comparisions here: : : : robotpig.net - Desmosedici RR __________________ My Gallery

12-14-2007, 08:15 PM	#2
NorthernRR Join Date: 12-18-2006 Age: 28 Bike(s): 1KRR, VFR, CRF450R, EX500 Posts: 1,399	Re: Detailed comparo - Desmosedici RR vs MotoGP Bike I find it funny that they even try to draw comparisons between the two... the mgp bike is a truely awesome bike, while the Desmo is original in it's own form... can't compare... __________________ See you at Indy

12-14-2007, 11:48 PM	#3
phobe circa 1970 Join Date: 12-17-2006 Age: 26 Bike(s): 600RR, 125R Posts: 4,634	Re: Detailed comparo - Desmosedici RR vs MotoGP Bike First I've read of the effect of exhaust on aerodynamics.... interesting. Anyone else look at that picture of the engine and wonder where the water jackets were? __________________ Cum hoc, ergo propter hoc

12-15-2007, 10:23 AM	#4
slickwill 67 Kg Join Date: 08-31-2007 Location: Idaho/Iowa Age: 29 Bike(s): Western Flyer Posts: 2,142	Re: Detailed comparo - Desmosedici RR vs MotoGP Bike Funny, I have an article that claims the exact opposite effect of placing an exhaust in that location. I'll have to try to find it when I get back home to Des Moines. __________________ If it has wheels, I've crashed it, and some things that don't skis, snowmobile, card board box, giant tube, sentra, dirtbike, lawn tractor, grandmas bread tray, kayak, canoe, raft, bicycle, waterskis, tobaggan, horse, ATV, Now my CBR (women)

12-15-2007, 12:38 PM	#5
ccwilli3 having a laugh... Join Date: 12-18-2006 Age: 30 Bike(s): pps mod'd ohlins on a cbr Posts: 1,011	Re: Detailed comparo - Desmosedici RR vs MotoGP Bike really good read. __________________ Cleaver, a film by christopher moltisanti and carmine lupertazzi

12-15-2007, 08:19 PM	#9
slickwill 67 Kg Join Date: 08-31-2007 Location: Idaho/Iowa Age: 29 Bike(s): Western Flyer Posts: 2,142	Re: Detailed comparo - Desmosedici RR vs MotoGP Bike This is a very busy webpage but kind of goes into the explanation of why an exhaust shouldn't point upward. I'm not sure it will work as a direct link because I had to register my email to get to this page. You have to skip down a little ways to get to the aero stuff. Harley Power ! __________________ If it has wheels, I've crashed it, and some things that don't skis, snowmobile, card board box, giant tube, sentra, dirtbike, lawn tractor, grandmas bread tray, kayak, canoe, raft, bicycle, waterskis, tobaggan, horse, ATV, Now my CBR (women)

12-15-2007, 10:09 PM	#10
seamus is feelin alright Join Date: 12-13-2006 Location: Rocket City Age: 34 Bike(s): 1KRR; VFR; FMX650 Posts: 5,469	Re: Detailed comparo - Desmosedici RR vs MotoGP Bike Nice find. Now go find part two so I can keep learning __________________ Ducit Amor Patriae Richard Herald, The Gentle Giant The nation that makes a great distinction between its scholars and its warriors will have its thinking done by cowards and its fighting done by fools. --- Thucydides

12-18-2007, 03:23 PM	#11
Jetbdude Every man's dream Join Date: 12-13-2006 Age: 34 Bike(s): 07 600RR Posts: 2,468	Re: Detailed comparo - Desmosedici RR vs MotoGP Bike Bwhip, here's your chance...... Ducati Desmosedici For Sale - 13x Forums __________________ #20

12-18-2007, 07:23 PM	#12
bwhip Every ride a gift... Join Date: 12-13-2006 Location: Idaho, USA Bike(s): 1098S-SXV550-849-Ruckus Posts: 3,899	Re: Detailed comparo - Desmosedici RR vs MotoGP Bike __________________ My Gallery

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