Crash.Net User: Painless

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Painless

July 01, 2014 4:04 AM

MotoGP » Dall'Igna: New engine ‘first step’ for 2015 Ducati


Any shortness achieved by switching to air-bags (they are only pneumatic in the sense that the valve spring has been replaced by an air bag) would be minimal. The desmo system loses almost zero power to operate the valve train as opposed to springs or air bags. Preziosi confirmed that they had not run out of space when testing how far they can move the engine forward. But obviously there is more to it than just shifting the engine forward. One option may be that they are stacking the gearbox cluster more vertically or closer to the crankshaft to make the engine more compact in total length. This would give a lot more freedom with wheelbase and weight distribution.

Painless

June 25, 2014 4:27 PM

MotoGP » Guy Coulon (Tech 3) - Q&A


V4Poweeeer: @Painless ..... I'm assuming your suggesting superchargers as a method of eliminating the need for electronics am I correct??? ...... Now this is the sort of topic I really like engine design :) Superchargers push the power and torque towards the lower end of the rev range.
Yes, the dramatic increase in low end power will increase the tendency to spin/wheelie at low rpm. However when cornering at racetracks the riders keep their engines at the optimum rpm to get back on the power. They aren't chugging around the corners. The supercharged engine will deliver a much smoother power delivery at high rpm than a naturally aspirated version, assuming that you are comparing two engines with similar max power, because the increase in power will be less.. I can see no valid argument against a perfectly linear power delivery and that is what supercharging can deliver.

Painless

June 26, 2014 1:12 AM

MotoGP » Guy Coulon (Tech 3) - Q&A


@V4Poweeeer "Your argument is throw a supercharger on for the sake of throwing a supercharger on." Incorrect. I stated the reasons why and you did not address them. I also provided a link to a dyno chart that shows a perfectly linear power curve. That means the rate of change, or acceleration in horsepower, is fixed at a constant value. This does not ring any bells here. Perhaps it is too technical for some to grasp. Then you continue talking about "shifting power lower". Again completely wrong. Please study the technical information from Rotrex. You can tune the supercharger to match your engine. Of course it is complete stupidity to continue to spin the engine any higher than is necessary, so a lower redline would be far more appropriate than 17000rpm. You don't need to respond to me as I am done.

Painless

June 25, 2014 4:47 PM

MotoGP » Guy Coulon (Tech 3) - Q&A


@V4Poweeeer "I'm assuming your suggesting superchargers as a method of eliminating the need for electronics am I correct???" Yes. That is correct. However, it is not just the electronic rider aids that need to be addressed, but also the huge costs involved in this cycle of ever diminishing returns. In order to push the peak power of these engines higher the peak torque rpm is also lifted higher. So these engines have a violent power delivery. They are simply dangerous. Then after applying electronics needed to tame the savage beasts the manufacturers think "Great now we add back that 10hp that we took away last year". The technology is controlled by the rules. Unfortunately the general public have the misconception that the technology is the best.

Painless

June 25, 2014 8:46 AM

MotoGP » Guy Coulon (Tech 3) - Q&A


@V4Poweeeer Re the supercharger, I disagree. The space is too limited here. However if you search for "Filippo Preziosi Debrief Transcript Today's Test Was About Ducati's Future" you will find my detailed response regarding this and a dyno chart amongst the posts. Re the 500cc with 4 stroke as the only rule: The factories would immediately build engines with forced induction. They would likely use the number of cylinders that yields the best power to weight ratio.

Painless

June 25, 2014 3:50 AM

MotoGP » Guy Coulon (Tech 3) - Q&A


I'm fine with that. If the world wants electric racing motorcycles then so be it. At least it has the chance of not being a pseudo "prototype" class like MotoGP. I like the technology because I have been involved with racing motorcycles. I am inspired when I see people pushing the boundaries like Britten did. He had a dream and he made it happen. In my world there would be people and small enterprises all pushing those boundaries of engineering and allowing many talented riders to have a shot at the title. But in the world we live in there is none of that.

Painless

June 25, 2014 4:49 AM
Last Edited 28 days ago

MotoGP » Marquez: It can’t go on forever!


Ok Mr Brain let me explain it for you. Guy Coulon's statement regarding what would happen if you opened the throttle mid-corner is being used to defend your view that electronics are needed. I believe that the rules, as they are written, necessitate the need for electronics because the rules are ridiculous for reasons that I have previously made clear. What Guy Coulon stated only supports my argument not yours. In order to validate my argument I offer up an alternative technology (supercharging), which, in my opinion, is both cheaper and more effective, and meets the requirements of both Talent Fan and Valentino Rossi.


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