Crash.Net User: BJR

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BJR

April 16, 2014 4:57 AM

F1 » Red Bull appeal rejected


SAS2R:The data sheet provided by Gill Sensors (available on their web page) shows that 52% of their sensors have an accuracy of +/- 0.1% and that 92% have an accuracy of +/- 0.25%. I would hope that the sensors provided to the FIA were preselected from the +/- 0.1% bin.
Interesting reading. Their fuel flow sensor samples at 1khz, while you have 6 injectors firing once (?) every 2 revolutions @ ~12500 rpm which would equate to about 625 injections (fluctuatons in fuel flow) per second. Nyquist wouldn't be happy..

BJR

April 16, 2014 12:00 AM

F1 » Red Bull appeal rejected


It's not hard for a team to figure out what's more accurate, the sensor or their injectors. Put x kg fuel in car, run car, weigh remaining fuel. A key point is that fuel flow may not be smooth and constant, you have multiple injectors firing over one hundred times a second and sometime during that mess of little fuel flow pulses, a sensor is going to sample the fuel flow back at the tank at a single instance of time, probably add that to a few other samples and take an average. There is clearly a technical difficulty that many of the teams are dealing with. In all sport, teams and individuals have to deal with bad calls from the Referee or Umpire and good sportsmanship should prevail. How the Ref should be punished for making a bad call is an ugly can of worms??

BJR

April 14, 2014 10:11 AM
Last Edited 155 days ago

MotoGP » 'I wasn't thinking' says 'distracted' Lorenzo


@therealdave, with Carmelo in his back pocket, Rossi was going to get back onto a "competitive bike" no matter how bad his Ducati performance was going, Carmelo even said so publicly. If Stoners's first two years on the Duc were anything like Rossi's then he would have been out on his ear, not being offered a Factory Yamaha. Anyone whose worked in a large organisation with backroom politics fully understands how when you're the bosses golden boy you're on top of the world and magically things fall into place (Honda's tyre problems of 2012), but Lorenzo has demonstrated he's not the golden goose (revenue generator) that Rossi is,Sic was supposed to be, and Marques could be and now all his backroom support has disappeared and he's fighting a loosing battle.

BJR

April 09, 2014 4:15 AM

MotoGP » Crutchlow's Ducati 'in a different place'


TrueFan: @Realist, @eadgbe and @BJR You kiddies need to catch up. You're as lost as Crutchlow's Ducati....From earlier in this thread... TrueFan March 24, 2014 7:40 AM
At least I had the courtesy not to take a cheap shot at your level of professional experience with such electronics that led you to make those comments. Seriously though, put on your big boy pants and admit you were wrong and we'll call it even :-)

BJR

April 01, 2014 3:14 AM

MotoGP » Crutchlow, Dovizioso join Ducati test


sirprice1: CC needs to bend an ear of CS in Texas for a few pointers ..
Not sure how relevent it is but CS did mention that one key riding technique was to deliberately push the bike over it's limit then initate a recovery, rather than bring the bike to it's limit then wait for it to let go and react to that. The theory being it was more predicatble knowing when it was going to let go by forcing it rather than trying to react to random "loses" with little warning. All the above certainly had nothing to do with improving the bike or making it safer for other riders, but was about minimising the risk of the unexpected while extracting the most speed. Technique didn't always work though but it worked often enough to convince the world it was a good bike.


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