New VVT boxer engine

2019 RT 1250 VVT?

bikesocial---bmw-r1200-rt-update-006-hvh.ashx


https://www.bennetts.co.uk/bikesocial/news-and-views/news/2018/march/bmw-r1250rt-vvt-spied

I see they’ve copied my Pelicase idea, the swines.
 
The current engine is powerful enough IMHO. I would prefer BMW make the bike more reliable and more corrosion resistant, particularly as the new bike will be close to £20k fully loaded. My next bike will probably have about 100bhp with 800 to 1000cc engine. As I get older I have stopped chasing power, particularly as certain members of society are against speeding and it is seen as a revenue stream.
However I suspect the VVT design is being introduced to reduce emissions.
 
Is it my eyes or is that rider 7ft tall his legs look so cramped, or maybe my knees do not bend as well :nenau

He's on the balls of his feet and he does look quite tall as well.

I've just parted with €24k for a new GSA TB so this new bike or engine wont be on my radar for quite some time. Also there isn't a f*cking hope I'm buying the first generation of this.
 

Interesting article, particularly the bit on the variable valve lift heads already produced for the boxer engine by Alpha racing. However, looking at the graphs for this it seems like the most significant improvements are all at well over 6000 rpm, so though it may be useful on the track, I'm not so sure about normal riding. Hopefully BMW's version would be tuned to give more benefits at lower rpm.

The variable valve lift system allows the elimination of the throttle butterflies, and sounds similar to the system Fiat have in their TwinAir engines. We have the 900 cc TwinAir 2 cylinder engine in my wife's Fiat 500 and it's a hoot to drive engine-wise, though the handling is appalling.
 
He's on the balls of his feet and he does look quite tall as well.

I've just parted with €24k for a new GSA TB so this new bike or engine wont be on my radar for quite some time. Also there isn't a f*cking hope I'm buying the first generation of this.

Me neither I waited until 2017 to get the LC, hopefully will get me through many years
 
Lets hope that whatever they develop, they can make an engine that doesn't sound like the big ends have gone. The racket from these engines is abhorrent to anyone that has an ounce of mechanical sympathy.

Compared to the dry clutch ducati, the TC is almost silent
 
The old VFR's had a pronounced 'kick' at around 6900 revs, 84 MPH I think. My 2014 VFR had a very much softened transition and worked a treat, gave you a thrill in lower gears, it howled, especially with an Akro and the baffles out - only thing it did not like was constant speed on the transition zone. Excellent bike, very underrated. The magazines really rate the later Crossrunner with the same engine. (oops sorry, need to read the end of a thread not the beginning!)
 
The old VFR's had a pronounced 'kick' at around 6900 revs, 84 MPH I think. My 2014 VFR had a very much softened transition and worked a treat, gave you a thrill in lower gears, it howled, especially with an Akro and the baffles out - only thing it did not like was constant speed on the transition zone. Excellent bike, very underrated. The magazines really rate the later Crossrunner with the same engine. (oops sorry, need to read the end of a thread not the beginning!)

The VTEC on the VFRs is a different technology. It is not VVT (variable valve timing) nor is it variable valve lift. VTEC is just a way of changing from 2 valves per cylinder operation to 4 valves per cylinder at a specific engine speed. As such it doesn't have any potential for continuous variability to suit engine load/speed as the other two do, which is probably why Honda have found it quite difficult to engineer a smooth transition between the two operating modes.
 
Glad to be corrected! Thanks to Fred (from Loo ba roo)

I had an early CrossRunner for a while and it was a pleasant enough but unexceptional motor until it hit about 6500 revs, then it went a bit mental, which was good fun once you got used to it. Had a bit of surging at low constant speeds, and could have done with a bit more oomph lower down the rev range - but still a nice engine though. I believe the later versions do have a much smoother transition.
 
the current GS has plenty of power for 95% of riders..i love the fact you can use all the power, taking it to the limiter when you want to do a bit of scratching ...140-160 BHP is not for an adventure bike with 19"-21" front wheels and skinny semi off road tyres

Rubbish!

Oh...did I say that out loud :-)


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6e7af8a6326e3099fd065a6c634bf08b.jpg


Wondering if this is an auto cruise/braking device. I’d have one...I love the one on the car. So long as it works of course.


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The VTEC on the VFRs is a different technology. It is not VVT (variable valve timing) nor is it variable valve lift. VTEC is just a way of changing from 2 valves per cylinder operation to 4 valves per cylinder at a specific engine speed. As such it doesn't have any potential for continuous variability to suit engine load/speed as the other two do, which is probably why Honda have found it quite difficult to engineer a smooth transition between the two operating modes.
Rubbish!

Oh...did I say that out loud :-)


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Yup you did :-)
 
6e7af8a6326e3099fd065a6c634bf08b.jpg


Wondering if this is an auto cruise/braking device. I’d have one...I love the one on the car. So long as it works of course.


Sent from my iPad using Tapatalk

It could be a garage door opener :D
 
What's a garage?

Its an air conditioned, often centrally heated, inviting and women free room (well, they’re allowed access to the freezer or you wont get dinner) where you keep your precious things. Everybody knows that.


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