www.boxertrix.com

First, try fitting The Choobs.

Might save you lots of $$$.

Corvus wrote:Found this.

A decent article.

http://www.autozine.org/technical_schoo ... haust.html

You rotter.

That's just filled my head with more 'stuff' that I'll be thinking about in the wee small hours.

Cheers.

Yes Corvus, that's my understanding too. I'm not sure of what the actual process is but the wave rebounds when it reaches the end of the tube and travels back down to the inlet valve. That's what I've always understood anyway. Oh absolutely right. It's when you've got more cylinders to play with yo...

Yes Corvus, that's my understanding too. I'm not sure of what the actual process is but the wave rebounds when it reaches the end of the tube and travels back down to the inlet valve. That's what I've always understood anyway. Oh absolutely right. It's when you've got more cylinders to play with yo...

Is the curve on a velocity stack a parabola? An ellipse. :mrgreen: snip Brilliant. Thankyou for posting that info. Quasi linear Mach number evolution! What the f? Are they saying the air acceleraties in constant fashion, from zero to whatever? I think they mean the shape keeps the acceleration cons...

While on a trip, I wondered about the velocity of a departing bullet from a moving vehicle. Does the bullet gain the forward speed of the vehicle if fired forward, thus making it faster than if fired from a stationary position? Similarly, does the bullet loose some speed if fired from the back of t...

As we're not dealing with the speed of light or any relativistic effects (therefore 11S's must be excluded from the discussion :)): As appears to a bystander: - velocity car: 100 kph. - velocity of bullet being carried in car before it was fired: 100 kph (same as car). - muzzle velocity of bullet fi...

Corvus wrote:Is the curve on a velocity stack a parabola?

An ellipse.

Do reflected "pressure" pulses play any part? I think so Corvus. When one inlet valve closes (thump), the air in the column behind compresses and rebounds along the tube as a +ve pressure wave. When the wave reaches the open end it momentarily pressurises the air around the opening of the...

Surely airflow is ultimately governed by how much the filter can pass through it, and this limits the actual volume of air. The tubes merely take what's available to them and it's down to the specific geometry as to whether the actual air speed is higher or lower. What actually matters is how much ...

OK, I've taken the GS tubes off my bike today because I'm concerned about weak mixture at high speeds. ) I've got the grey CCP which loads a very lean map into the Mototronic ( hence our 55 mpg / 95 bhp figures whilst the GS tubes shouldn't really affect the mixture either way at small to medium th...

OK, I've taken the GS tubes off my bike today because I'm concerned about weak mixture at high speeds. I've got the grey CCP which loads a very lean map into the Mototronic ( hence our 55 mpg / 95 bhp figures ) whilst the GS tubes shouldn't really affect the mixture either way at small to medium th...

I come from a day job involved with the design and manufacture of replica sports cars - we used heat shielding for a number of applications where heat transfer [ GRP bodies ] might have been an issue. This was especially useful when exhaust parts ran through a tight / enclosed space. However, on th...

Hi Simon and Al, Good to hear your results. The very low speed improvement was what surprised me too - ie smoother idle and easier take-up on the clutch. Made for better tractability in tight twisty mountain road corners. Out of curiosity, what model years are your bikes, do you have the stock inta...

Hi Simon and Al, Good to hear your results. The very low speed improvement was what surprised me too - ie smoother idle and easier take-up on the clutch. Made for better tractability in tight twisty mountain road corners. Out of curiosity, what model years are your bikes, do you have the stock intak...