MotoGP 2013

**Dave-** · 15th April 2013, 14:12

Originally Posted by Asher

lets keep this thread PG please.

What I was saying is that if you are drafting someone, them adding a few m3 of exhaust gas to the area in front of you is likely to be insignificant when compared to the total volume of air you are already pushing through anyway.

not to mention it's less dense air with lots of carbon oxides which wont burn real good (although someone was telling me some carbon dioxide through the engine can increase efficiency)

**bogan** · 15th April 2013, 14:35

Originally Posted by Reckless

I remember reading somewhere that they turned/pointed the exhaust inwards on the big twins eg the RC51 because the turbulence was effecting the aerodynamics of the bike. Pretty sure my VTR and the SV are like this to???

Not surprising, yet another reason to go with and under/in tail exhaust system!

Originally Posted by Dave-

Intuition tells me that exhaust gasses ought to be laminar (the opposite to turbulent) as they exit the exhaust, I would have thought the aerodynamics of the bike would effect the exhaust? Anyone?

They're also high speed and high temperature gases exiting into a turbulent stream, point em right and I guess you can reduce the turbulence, point em wrong and you increase it.

also this

**Brian d marge** · 15th April 2013, 14:40

Originally Posted by Dave-

That is seriously cool, is that all open source?

yes Open foam , tis what I do ! ( not website design as you can see!)

I have a motorbike one somewhere , and there is a tutorial included ( not this one but its open foam )

http://

Not a good one , but Ill see if I can find an old one of mine sometime

Stephen

**yod** · 15th April 2013, 15:57

Originally Posted by bogan

also this

oh bugger...can some pass the tissues please....

**cmoore** · 15th April 2013, 19:00

I seem to remember reading somewhere that Yamaha( and maybe others) evaluated the exhaust under the seat concept but found no difference in performance which is why they still have the pipe out the side..

**Brian d marge** · 15th April 2013, 19:39

Originally Posted by cmoore

I seem to remember reading somewhere that Yamaha( and maybe others) evaluated the exhaust under the seat concept but found no difference in performance which is why they still have the pipe out the side..

just watch the 2 videos i posted ,,,answers all there

Stephen

**cmoore** · 16th April 2013, 18:23

right.....that explains it then

**pritch** · 17th April 2013, 14:38

I was wondering how the time zone in Texas would relate to us. Not too bad apparently.

If the Moto GP website is right Q1 is at 7.10AM Sunday
Q2 - 7.35AM
Moto2 - 8.05AM

The MotoGP race is at 7.00AM Monday. And I'm on leave

The tiddlers can wait until later.

**roogazza** · 19th April 2013, 11:03

http://www.motomatters.com/news/2013...in_motogp.html

So have SKY pulled their finger out yet ?? anyone ?

**Dave-** · 19th April 2013, 12:11

Originally Posted by roogazza

So have SKY pulled their finger out yet ?? anyone ?

In another thread it's pretty much a "No" from sky

**Geemsee** · 19th April 2013, 12:21

Originally Posted by pritch

I was wondering how the time zone in Texas would relate to us. Not too bad apparently.

If the Moto GP website is right Q1 is at 7.10AM Sunday
Q2 - 7.35AM
Moto2 - 8.05AM

The MotoGP race is at 7.00AM Monday. And I'm on leave

The tiddlers can wait until later.

Click on the posted time and you can change it to local time, hey presto!