Motorbike Highway Racing
Future Instructions – Half Two
See Part One here (link).
Half Two of Trev’s catch-up with Scott Good, present Director of Know-how for Dorna, engaged on Dorna’s imaginative and prescient for the longer term instructions of highway racing. Scott can be the BSB Technical Director.
In part one, we talked about the introduction of the new Next Generation Supersport category, and now we proceed on the subject of balancing the efficiency of the race equipment between producers.
Trev – So how precisely is the balancing managed?
Scott Good – “Are you sitting comfortably?
“The primary job is to dyno all of the bikes on the identical engine dyno in Italy. That offers us an ideal torque desk from the engine. Then we get hold of/measure and calculate the inertia of all elements of the engine. Wheels, transmission and many others. That’s dumped in a mannequin that may then calculate acceleration and speeds. The mannequin consists of a variety of element together with bike centre of gravity, a tyre mannequin that considers grip and rolling resistance, temperature corrections and even fashions the way in which wherein the ECU manages a gear shift.
“We then get information from the monitor to validate the mannequin initially and to reverse engineer the coefficient of drag and higher estimate the ram air impact, and many others.
“After which you can play with TPS limitations/weight and many others. to reach at related acceleration potential.
“It’s iterative as groups get higher at optimising cam timing, and many others., however at this level, it is kind of settled.
“We then hold checking information to see how the bikes are literally engaged on the monitor.
“The limitation ultimately is a discount in throttle opening. Nevertheless, it’s not a blanket cap. It’s a 4D desk. The best instance is {that a} heavy bike wants extra energy for acceleration from low speeds, and a bike with a nasty aero wants extra energy at prime speeds to beat the drag….
“The preliminary degree we labored to was ‘good R6’, however it has crept up since in WorldSSP.
“In MotoAmerica, an R6 gained the championship final 12 months, and a CBR600RR gained the British Supersport Championship.
“Discover that I’ve used energy and torque nearly interchangeably. The phrase torque seems in lots of conversations within the paddock, too, and folks instantly display a complete lack of technical understanding of what meaning (usually instantly after seeing a dyno sheet). Measure energy on the dyno and accepting losses, that’s, the facility on the rear wheel no matter the gear. Get a dyno studying of torque, and the dyno software program is calculating (estimating) engine torque on the engine (and making many inertia-based assumptions) that’s NOT what’s on the wheel, which then additionally adjustments by gear.
“However let me go away you with this: if torque is simply torque, why does your bike speed up sooner in a decrease gear (ignore aero)?
“On the first occasions, I climbed onto the roofs of the tallest buildings to look at all the pieces on monitor. You don’t see many different techs that concerned! It’s NOT a easy job, and we purpose to have one steadiness degree globally.”
Trev – Do you suppose that some manufacturers have at instances fielded ‘patsies’ on underperforming bikes to assist convey down the typical efficiency of their equipment? To keep away from having their efficiency adjusted?
Scott – “In WSBK, positively possibly! In WSS no. All of the groups are primarily personal and privately funded with an oversubscribed variety of entry slots, so nobody could be that staff. The BOP is just not based mostly on the complicated averaging equations utilized in WSBK; it’s based mostly on the logged efficiency of the bikes (WSBK relies on outcomes and time-keeping information too).
“The information set recorded additionally permits us to see when a producer or staff is just not optimising the remainder of the set-up, so we purpose to take away the rider and staff from the equation – as finest we are able to.”
Trev – ASBK just lately introduced the pending introduction of Subsequent Era Supersport, as a sub class inside our Supersport class, which in present years has been a area that has been primarily made up of a fleet of YZF-R6 rivals, with a few ZX-6R thrown in once in a while. Our bike market is sort of small, and Yamaha provides by far probably the most assist to rivals throughout the board, which has led to this make-up of the category.
On the 27-rider entry checklist for World Supersport on the Phillip Island WorldSSP season opener, there have been solely two conventional 600s, the Petronas Mie Honda CBR600RR machine, and a single 636 ZX-6R Kawasaki.
I ought to make clear, whereas I mentioned Subsequent Era was going to be a sub class of our conventional Supersport, early indications are that ASBK goals to have Subsequent Era machines race from the again of the grid within the Superbike class. I do know this has already seen some folks with Subsequent Era bikes already constructed, or effectively alongside the construct course of, to significantly rethink whether or not they enter this 12 months in any respect, as they don’t need to race Supersport Subsequent Era bikes in with the Superbike class.
Scott – “Nicely… NG will probably be round 15-20 hp above a few of your present supersports bikes, however round 70 hp lower than your, mainly ‘Superstock, Superbikes, so that won’t the most effective information.
“Nevertheless from one other perspective, no staff would need to pay larger entry charges, and to cease that the sequence wants sponsors. Trying on the Supersport entry checklist and down the checklist of sponsors there could also be some sponsor pressures there…. Possibly brief sighted as most manufacturers will want the NG rules going ahead. However ultimately it’s in all probability just for now and offers an excellent NG rider the possibility to show that and NG could also be extra enjoyable than a 1000…”
Trev – Have you learnt if there has there been a acutely aware determination by Yamaha Europe or Japan to encourage all Supersport racers away from the YZF-R6 and onto the brand new YZF-R9?
Scott – “It’s the World Championship, and the racing funds is from advertising and marketing, so all of the groups can have needed to run the R9, as that’s the product that must be marketed.
“The older Supersport bikes had been extra centered and nearer to race bikes, but additionally turned too costly to redevelop in relation their decreasing gross sales quantity. The highway gross sales have proven that the extra competitively priced sports activities bikes are beginning to promote once more – the R9 has offered far more than they initially deliberate to supply for instance.
“That demonstrates that the kind of rider that’s captivated with sporty bikes are usually youthful. By the point in life you possibly can afford to drop $50K on a V4 Panigale or M 1000 RR, you might be then typically within the GS and Multistrada target market… Plus, there may be ALWAYS going to be one other new bike across the nook, identical to you want a brand new Macbook.
“If value of construct is the overriding query from you and the organisers, then a single-make sequence on near-stock bikes and one set of management tyres can be a FAR higher choice. However it is a national-level sequence that has created a few of the finest bike racers on this planet; I believe it’s above that.
“The size of Australia is large and journey value have risen dramatically over the previous couple of seasons, I believe that decreasing the footprint to largely occasions within the Adelaide/Melbourne/Sydney triangle is, within the present financial local weather, an excellent step and provides everybody ongoing financial savings.”
Trev – The primary inventory of the YZF-R9 usually are not scheduled to land in Australia till Might. I imagine the availability of the race kits for the R9 are at the moment extraordinarily restricted concerning availability. Thus, nearly all of our Supersport area will probably be made up of YZF-R6 riders throughout the foreseeable future.
Our guidelines mandate inventory camshafts and cylinder heads for Supersport bikes of their present type. Do you suppose permitting camshafts will convey the efficiency of the YZF-R6 as much as the extent that can permit them to compete on a reasonably degree pegging with the brand new Subsequent Era Supersport bikes?
Scott – “Each championship has had a crossover interval, however all race bikes come to an finish of serviceable life, so in just a few seasons, the change gained’t be observed. It looks like 2025 is a ‘comfortable begin’ mid-season introduction for ASBK anyway.
“By the tip of the 12 months, there will probably be loads of R9 kits and set-up information.
“In MotoAmerica, we had a interval the place the 600s might match cams and air funnels however use commonplace cylinder heads; it made up round 80 per cent of the hole.
“The lengthy decision-making course of has actually been irritating for groups, however ultimately, it’s finished, and the regular introduction could also be simpler to handle.
“First, groups must construct bikes and perceive the fundamentals of the electronics. By the tip of the 12 months, extra information and elements will probably be accessible. Don’t neglect that the sequence itself has to study in regards to the bikes, tech management and so forth, so let’s see the steps being taken now as a optimistic.”
Keep tuned for Half Three of the interview shortly!
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