idiotsavant
addict
Reged: 01/11/2006
Posts: 513
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Anyone know if the engine tuning regs are different enough between BSB and WSB to account for (some) of the difference in the lap times at Brands between the two championships?
Roughly speaking, 1.8 seconds between the best WSB and Shane Byrne's fastest lap at Brands BSB round in May?
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Truth is ever to be found in the simplicity, and not in the multiplicity and confusion of things.
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KwH
Pooh-Bah
Reged: 11/11/2006
Posts: 1714
Loc: Carmarthen, Dyfed
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Quote:
Anyone know if the engine tuning regs are different enough between BSB and WSB to account for (some) of the difference in the lap times at Brands between the two championships?
Roughly speaking, 1.8 seconds between the best WSB and Shane Byrne's fastest lap at Brands BSB round in May?
I'd have thought it was the track conditions in May and the tyres Pirelli brought along for BSB versus the WSB ones would potentially make a difference, as well as how hard Shakey was being pushed to generate thise times. But the engine power certainly does make a difference - compare Supersport 600 with Superstock 600 pole times at Brands this weekend.
SuperSPORT 600 pole time: 1:28
SuperSTOCK 600 pole time: 1:31
Some of that will be the Supersport pole sitter just being a bit better than the Superstock pole sitter, but not all of it.
However, I guess with a Superbike the difference is between more power than you need in most places and a LOT more power than you need in the same places. Sykes did better than OK, assuming he was running his BSB engine today (was he?), and we know that he is generally not quite as quick as Shakey on the Ducati.
1.8 seconds plus or minus a bit is easily credible, isn't it...
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Ken Haylock
http://www.cix.co.uk/~kwh
"Ride what you like, how you like, as often as you like; but always take responsibilty for your actions." - Anonymous Zen Guru
"Obviously all I'll care about is if it's good for wheelies (i.e. fluffs up my meagre skills), and what free gift they give on the launch." - Anonymous Moto-Journalism Guru
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rsv_mark
enthusiast
Reged: 16/11/2006
Posts: 219
Loc: Leamington
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Bear with me. I could ramble here.
the differences are a few but crucial. WSB allow use of non stock cranks, pistons, rods, cams with lift and duration while bsb you have to use the (original)road spec items and cams are only allowed duration not lift. There may be other differences but I am not the expert. A very good friend of mine is in the paddock and gave me the inside track that on their bike these mods are good for 20 extra horses on the dyno.
Shakey's bike is already homologated with super trick internals so these changes to his bike would not have made as big a difference. Also, I understand his bikes are handbuilt in the factory. Any wonder he is runing away with bsb?
One of the reasons this was introduced this year was to make it cheaper. Again, my source informs me that they didn't need any engine rebuilds last year but will have needed 4 this season.....you guessed it, its made it more expensive.
Back to the question in hand. Tyres, chassis, conditions, and not forgetting rider talent all make a diference to times but i'll wager 20 horses don't half help.
btw, feel free to add to this as i'm sure there are those out there with more knowledge than me....and like any good journo, I am not going to reveal my source!
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Knowledge is knowing a tomato is a fruit. Wisdom is knowing not to put it in a fruit salad.
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KennyP
addict
Reged: 16/11/2006
Posts: 645
Loc: Croydon via Brussels and Glasg...
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RSV Mark. I reckon you've it.
Anyway, I hear the WSB Pirellis were a notch above the British supply and that there were another couple of tyre options available to the WSB paddock.
But, like you say, a few more ponies and a classier grid don't do any harm either!
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kenny_pryde@ipcmedia.com
"There are three sides to every story. Yours. Mine. And the truth." Robert Evans.
Waste more time here http://uk.youtube.com/SuperBikeMag
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morepower
enthusiast
Reged: 21/12/2006
Posts: 276
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Quote:
Bear with me. I could ramble here.
the differences are a few but crucial. WSB allow use of non stock cranks
WSB do not allow a change of crank for anything other than 1000cc twins. The cranks can be polished and balanced as well as surface treated but must remain as homologated. BSB have the same rule but pistons cannot be changed in BSB and must be as homologated. They may use another make but if they have an oil ring as stock then they have to have an oil ring in the ones being raced where WSB can use simple 2 ring pistons. Valve lift is limited to no more than stock in BSB but duration is open. These two differences doesn't make much difference in power but does mean the BSB bike will be less reliable at higher RPM and BSB bikes usually run lower rev limits due to the cams and the heavier pistons. SO the bikes will not seem to different if the BSB is allowed to rev higher but it will have more risk of failure.
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I'm not competitive, I just like a good veiw!
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