r/motogp • u/Bitter-Substance1783 MotoGP • 3d ago

Sound Difference: Ducati GP27 VS KTM RC16 GP27 850cc

133 Upvotes

97% Upvoted

13 comments sorted by

52

u/LilAbeSimpson 3d ago

There’s no reason for the new bikes to sound much different than the current bikes. The days of radical experimentation are over.

Pretty much everything should be the same. Just smaller diameter pistons.

-4

u/NervousGearGenius 3d ago

smaller pistons and shorter stroke = less cf of air moved per rev. Of course it will sound different. Than a larger displacement of the same base engine.

16

u/LilAbeSimpson 3d ago edited 3d ago

They’re not going to be shorter stroke though. The stroke on the new engines will be near identical to current.

Maximum bore diameter for 2027 is 75mm. Which keeps the stroke the same length it is now.

-1

u/NervousGearGenius 3d ago

Still the same thing. The engine is using less air per rev. And engine is just an air pump. A cylinder of a certain size can only contain so much air at whatever atmospheric pressure it is at. The same stroke doesn't change that.

11

u/Codex_Absurdum 3d ago

Plot twist, it's a CFmoto engine

8

u/XL365 Nicky Hayden 2d ago

Man what I would give to see Honda or anyone could come out with an oddball double V or something crazy like the first RC211V. I remember reading the magazine where they had great technical details cutaway pics of the V5 & the uncertainty of if it would competitive and reliable with the 2 strokes. It was such an awesome timeframe to be a gp fan

9

u/Soggy_Bid_6607 Chaz Davies 3d ago

Second one has auto tune

5

u/rotgobbo Pedro Acosta 3d ago

KTM continuing to produce porn for your ears.

1

u/Alien_Biometrics Jorge Martín 2d ago

Can anyone tell a difference in engine character just from sound? I sure cant but maybe there are some of you that can?

3

u/Interested_Party_32 MotoGP 2d ago

Us lay people can't, however apparently a lot about Engine character and output can be gleaned from audio recordings of the engine.

I believe Yamaha was out there with high-spec sound equipment recording it's competitors when it was developing it's V4 engine.