Keberatan KTM soal Limiter RPM Honda Moto3 diklarifikasi oleh Technical Director MotoGP

Bro sekalian, di akhir musim 2015/ awal musim 2016 yang lalu KTM melalui KTM Sports Director Pit Beirer mengajukan keberatan dan mengklaim Honda NSF250 yang dipakai pebalap pebalap moto3 honda memiliki rev limiter ( Limit RPM ) yang sedikit melebihi regulasi ( baca di speedweek)  . . . regulasinya kayak apa ?? Jadi ini sob . . . regulasinya, RPM motor moto 3 akan langsung drop ssemenjak RPM 13.501 namun Pit Beirer mengklaim Honda NSF 250 RW memiliki RPM yang menurun tidak drop tapi menurun secara gradual mulai dari 13.500 sampai  13.600 rpm.  . . . Nahhh Honda pun pasti berkilah bahwa motornya telah di Screen dan di scruit sama Technical Director Tho . . . jadi sebenarnya sasaran tembak KTM jadi malah mengarah ke Technical Director MotoGP .  . nah apa jawaban Danny Aldridge, Technical Director MotoGP ??

Danny Aldridge,  MotoGP Technical Director mengatakan bahwa setelah melakukan pengecekan lanjutan pada limuter RPM ia dan tim tidak menemukan hal hal yang tidak biasa dan tidak diduga tentang bagaimana Limiter RPM bekerja ( pada motor yang diklaim )  dan proses pemotongan RPMnya konsisten terjadi pada semua Motor. Namun begitu ada sedikit signal Overshot yang terjadi . Namun masih dalam batas Moderate.

Menurut Aldridge hal ini sebenarnya tidak mengejutkan kerena dengan spek mesin 1 silinder 250 cc sangat sulit ECU untuk memotong power dengan sangat tepat ketika limit RPM terjadi. Dan ini bergantung pada signal yang digunakan ECU untuk mengukur RPM yang memiliki jeda milidetik . .. Berikut pernyataan aslinya sesuai press release yang tmcblog terima . . .

You will probably be aware that there was recent speculation in the specialist media that data existed which showed some Moto3 machines exceeding the maximum 13,500 rpm limit imposed in the regulations.

Frankly, this came as no surprise to us because with a single cylinder 4-stroke engine it is very difficult for the ECU to cut power at precisely the moment when the rev limit is reached. Depending on the signal used by the ECU to measure the revs there can be a period of a few milliseconds where target revs are exceeded by a small amount.

After further checks on the 2015 limiter we have established that there is nothing unusual or unexpected about how the rev limiter works and that the cut point is consistent on all engines. Nevertheless, moderate and temporary overshoots of the defined rev limit were identified.

All regulations for the Moto3 class are agreed within the Moto3 Class Working Group which includes delegates from all participating manufacturers. A meeting of this Group had already been convened to take place during the Qatar GP.The original purpose was to discuss future developments in this class. We will now add the rev limit issue to the agenda for this meeting.

There is no desire to reduce the point at which the limiter cuts power just to avoid data showing minimal overshoots.  It may therefore be necessary to modify regulations to take account of inevitable overshoots but, of course, other solutions may also be considered by the working group.

Further information will be provided after the Qatar meeting.

Danny Aldridge
MotoGP Technical Director

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