2015 Yamaha R1 to come with DCT option

[Silver993tt]

http://www.visordown.com/motorcycle-news-new-bikes...

[Silver993tt]

jackh707 said:

Hasn't the FJR been running it for a while?

FJR has an automatic gearbox which isn't DCT, completely different. Only Honda has DCT technology on a road bike right now (for the last 4 years)

[Silver993tt]

I think we'll see the other Japanese (at least) manufacturers adopting DCT technology across their premium bike ranges in the same way as premium car manufacturers.

[Silver993tt]

WaferThinHam said:

Surely a DCT will just add weight? No doubt it'll be 0.0001 of a second faster at changing up than with a quick shifter, does it even matter? I quite like changing gear. It has a sense of occasion.

DCT is much quicker than a 'quickshifter' which is simply a bolt-on to a standard gearbox. DCT also allows same quick gear change down the box unlike a 'quickshifter'.

Always the same when new bike technology is made available. The old school always slates it. Remember the ABS debate? How many were claiming they could out brake it? Hilarious and all proved wrong.

Maybe we should all be using no syncromesh and double de-clutching?

[Silver993tt]

bgunn said:

Silver993tt said:

Maybe we should all be using no syncromesh and double de-clutching?

On a bike? But bikes have dog engagement gearboxes and never synchro

Yes but the purists would surely want a redesigned box because double de-clutching is for real drivers/riders. all this modern synchro nonsense just removes one of the joys of changing gear surely?

[Silver993tt]

WaferThinHam said:

Silver993tt said:

Yes but the purists would surely want a redesigned box because double de-clutching is for real drivers/riders. all this modern synchro nonsense just removes one of the joys of changing gear surely?

When did a motorcycle require double de-clutching?

I thought they'd be constant mesh sequential for a very long time.

er, it was tongue in cheek

[Silver993tt]

bass gt3 said:

My only thoughts are with regard to track usage how will it compare to a manual insofar-

Holding a gear.
Scenario.
Trackgearing is always acompromise. So there'll be corners where maybe you ride the revs above the optimal change point, or evento the limitier as it's easier than changing up to immediately change back down. It's nice to be able to hold it in a gear ifrequired, and the idea of fthe box continuously changing up doesn't sound too great.

Downshifts..

So you're coming from a Fast section into a slow,tight corner. With a manual box it's easy to downshift as you like,using the engine braking as required.Will the DCT override this and hold a higher gear to reduce rpm??

Or will this be a sequential box operated soley by the riders foot? No auto mode,just seamless up/down shifts ONLY on command?? If thats the case, i wouldn't mind,but the idea of being mid corner and the box decides to give me a higher gear without my instruction isn't something i'd want!!

DCT boxes come with a 'manual' mode, so it will hold a gear all day long as long as it doesn't enter the red zone. Much easier to downshift with the light touch of a finger and much quicker/smoother than a traditional manual box. Again, it will hold any gear on the way down as long as you don't enter the red zone.

[Silver993tt]

bass gt3 said:

Thanks for that. Although i think i'dpreferto have th conventional although it'd beconnectedto the fangled box. pressingbuttons leantover etc, isn't somethingi thinki could get used to. Like swapping the pedals ina car. They're still inthe same place beit DCT or Auto.

It's much easier and much quicker to change gear using your thumb/forefinger than your foot, even when cranked over and doesn't upset the bike at all unlike a traditional manual change in the same circumstance. I have a DCT box on my bike and now covered 12,000kms.

[Silver993tt]

bass gt3 said:

Yep, totally understand.
But the one positive about the foot lever is you can only change one way. So if i'm in a corner, andmy foot is above the lever, i know i can only change up(race pattern) whereastrying to remember which sidegoes up or down, i know i'd get it wrong!!
Totally understand the benefitsof the buttons, but again taking the car worlds adoption, there's usually paddles/buttons on the wheel AND a normal shift lever. Forme, that would be the perfect set up.

It's a short learning excercise. I rarely get the up/down sequence wrong now, took me around 200kms to 'learn'. On the Hondas you can get a foot lever installed and change that way if you're inclined, not sure if Yamaha will do this, have to wait and see.