Honda Power Unit Hardware & Software

[Jef Patat]

downshifts sounds normal, but upshift??? wtf?

[majki2111]

So can someone sumarise why they are having vibration problem?

[FW17]

there is a rough unicorn running around inside the engine (reference to flight of conchords)!

[ollandos]

Listen when you change gears

(Watch before they block the video)

https://www.youtube.com/watch?v=e2V7NFz ... e=youtu.be

all my wish to the turbo .....honda ask 2 months ..but i think they dont have this time ...must be run new engine on the test and be on the car for russia ...or spain ..but its critical to take the opportunity for real track test ...and for the this weekend weather its going to be tricky ..if god have some rain i hope to make it exactly on the right time ...

[3jawchuck]

Listen when you change gears

(Watch before they block the video)

https://www.youtube.com/watch?v=e2V7NFz ... e=youtu.be

Is that a problem related to seamless shifting?

[FW17]

Listen when you change gears

(Watch before they block the video)

https://www.youtube.com/watch?v=e2V7NFz ... e=youtu.be

Is that a problem related to seamless shifting?

More like having to lift manually off the throttle while shifting up the gears so that engine is at a lower rev than normal

[PABLOEING]

¿New engine in two months?.....¿BCN?

[hurril]

Would someone knowledgable like to explain or talk a little about how vibrations can be like this? I mean - this is extreme!

[Jef Patat]

You mean speculate?

[Postmoe]

You mean speculate?

Yes, please. We need people speculating. Intense speculating.

[hurril]

You mean speculate?

No I meant what I said. I would like actual technical conversation in this thread from people that know things. There are plenty about but you are probably not one of them.

[Andres125sx]

Listen when you change gears

(Watch before they block the video)

https://www.youtube.com/watch?v=e2V7NFz ... e=youtu.be

Thanks for posting

That last upshift.... well, all of them sound terrible, but the last one in the video looks like if the gear was refusing to be engaged

[FW17]

You mean speculate?

No I meant what I said. I would like actual technical conversation in this thread from people that know things. There are plenty about but you are probably not one of them.

Last we speculated were on 3 areas (as reason for vibration)

1) too much of the engine structure shaved off for weight saving

2) TJI causing vibrations

3) Valves getting too hot

[FW17]

Honda prepares new PU in cca 2 months....and the reason upshift sound so strange is explained here...

https://www.motorsport.com/f1/news/hond ... ne-885582/

Oscillations ? Mostly due to flexing driveshafts....
Gearbox

I hope they mule test this engine at Twin Ring Motegi before they bring it anywhere near a F1 race

[Singabule]

I think wazari is reading our post, i see him online few hours ayo, or maybe glenntws could analyze few. My question is why honda not produce their own gearbox, their 9 speed DCT almost as smooth as PDK..sorry little OT