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variable desmodromics? yep: testastretta_DVT
- Thread starter Phl
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The know-how of Audi group really only came into play to refine some aspects/speed development time. Idea and development were overwhelmingly from Ducati, which Audi/VW view as extremely advanced in small displacement engines. That's why they used the SL engine in the XL Sport concept...
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Very cool technology for motorcycle engines. Maybe we will see this in the upcoming Panigale series of engines? A variable cam timing SL engined R model would be fabulous. Anyone know if variable valve timing legal in WSBK? This technology transformed high-performance car engines - is direct injection far behind? Great torque, incredible top-end, low emissions, and better mileage. A great time for bike engines indeed.
Tick, rattle, tick, rattle, tick, rattle, tick, rattle...... (at idle)
Newbs are still having aneurysms over 50cc too much oil or 30 minutes of condenstation in the gauge pod. Imagine the explosion of whining and warranty nonsense we're going to get from these.
At least the guys who miss the Ducati dry clutch rattle at intersections will be happy again. If this VVT is anything like the other identical looking VVT's I've spun wrenches on, it's going to be loud at idle. And it sounds almost exactly as a failed valve train.
It does work well. Giving much better low end torque without sacrificing top end. But do I want low end torque on a sport bike?
If the lack of valve springs means that the cam isn't jumpy into the VVT, maybe this will run silent. If it runs silent, the olde desmo valve train just became one of the most effective and interesting valve trains ever. Weird that in the past few years, an ancient desmo style valve train designed because of weak 1920's valve springs, has 2 new, good, reasons to exist. Massive valves that springs can't close, and a VVT that doesn't make a ton of noise.
Newbs are still having aneurysms over 50cc too much oil or 30 minutes of condenstation in the gauge pod. Imagine the explosion of whining and warranty nonsense we're going to get from these.
At least the guys who miss the Ducati dry clutch rattle at intersections will be happy again. If this VVT is anything like the other identical looking VVT's I've spun wrenches on, it's going to be loud at idle. And it sounds almost exactly as a failed valve train.
It does work well. Giving much better low end torque without sacrificing top end. But do I want low end torque on a sport bike?
If the lack of valve springs means that the cam isn't jumpy into the VVT, maybe this will run silent. If it runs silent, the olde desmo valve train just became one of the most effective and interesting valve trains ever. Weird that in the past few years, an ancient desmo style valve train designed because of weak 1920's valve springs, has 2 new, good, reasons to exist. Massive valves that springs can't close, and a VVT that doesn't make a ton of noise.
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i guess for the Multistoodle it will be a perfect fit.
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Can't say much about it's technological advantages/disadvantages.
But what I really don't understand is that so many of you are complaining about BMWs ugly asymmetrical design. Sorry, but why does Ducati always repeat this: left side looks really NASA like, right side f*#king plastics. I hate this!!
But what I really don't understand is that so many of you are complaining about BMWs ugly asymmetrical design. Sorry, but why does Ducati always repeat this: left side looks really NASA like, right side f*#king plastics. I hate this!!
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leaves more market revenue for the carbon fiber gang
Yeah, but imagine these were magnesium covers! They would hold "forever"...
UV protection on CF has become much more elaborate. But to be honest it's still plastic mixed with some fancy dupont stuff
Just look at the CF of 10 year old ducatis: you immediately start crying
Everybody is talking about added value and sustainability. The only motorcycle branch I am aware of is the HD pimping industry. But for me too tasteless
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Yeah, but imagine these were magnesium covers! They would hold "forever"...
UV protection on CF has become much more elaborate. But to be honest it's still plastic mixed with some fancy dupont stuff
Just look at the CF of 10 year old ducatis: you immediately start crying
Everybody is talking about added value and sustainability. The only motorcycle branch I am aware of is the HD pimping industry. But for me too tasteless
well, i must be a lucky guy.
i understand the advantage of CF.
i appreciate the appearance.
i love to replace parts on the bike.
i have the funds to cover/replace some major bits on the bike in CF.
and i still won't do it
exception is a swingarm / tank cover.
here though i haven't found my bang for the $ yet. and i don't mean cheap
Whut? Polymers rule. Then again, having experience working with polymers I have respect for the difference between cheap plastic and proper polymers.
Those "plastics" can be the absolute perfect material for many uses. Especially valve covers and oil pans. A cast aluminum belt cover would surely weigh more than that polymer piece.
Why does the Superleggera have magnesium valve covers? Likely because it's too expensive to make a plastic mold for a limited edition bike.
Many more parts on modern sportbikes will eventually be replaced by polymers. Sadly. The japanese bikes will likely lead the way, as polymer molds and machinery requires larger scales of sale to break even, than limited edition bikes can offer.
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