Boxer Jap crusher...

DYNAMICS · Post by **DYNAMICS** » Sat Oct 06, 2007 5:22 am

Who has seen the new HP2 Sport?...

BMW Motorrad launches fastest, lightest, most advanced Boxer of all time

First production motorcycle with:
Ã¢â‚¬Â¢ Boxer engine with double overhead camshaft
Ã¢â‚¬Â¢ Quickshifter clutchless gear changes
Ã¢â‚¬Â¢ Self supporting carbon fibre seat unit

The dreams of many Boxer fans have become reality. The launch of the new BMW HP2 Sport sees the sportiest, most powerful and lightest Boxer of all time hit the roads.

Based on the R 1200 S Sports Boxer, that competed successfully in Endurance race events this season, the new HP2 Sport bristles with high-end, top-quality racing parts. The HP2 Sport is the third model in the BMW HP Ã¢â‚¬ËœHigh PerformanceÃ¢â‚¬â„¢ range. The HP series has been designed by engineers at the BMW factory to produce bikes that represent the ultimate in riding performance; with the skilful harmony of exceptionally high quality components resulting in a high-end range of motorcycles.

For the new model, BMW Motorrad has developed the most powerful Boxer engine ever. This has been achieved through the complete redesign of the cylinder heads to create the first Boxer engine with double overhead camshaft. This allows the engine to reach higher revs therefore generating more power.

Achieving over 128hp at 8750rpm and 115Nm of torque at 6000rpm, the engine really packs a punch. With a dry weight of just 178kg, the bikeÃ¢â‚¬â„¢s power to weight ratio promises impressive performance.

The HP2 Sport has been designed with racing components originally developed from lessons learnt in Endurance racing. For instance, the frame has been strengthened from the standard one fitted to the existing R 1200 S model. Also the HP2 Sport is the first production motorcycle to be available for road use with a quickshifter. This enables fast gear changes without easing off the throttle or operating the clutch, making for a smoother, faster ride. As well as this the bike has a close-ratio six-speed gearbox, for maximum acceleration. Continuing its race credentials the HP2 Sport comes complete with a light-weight carbon fibre fairing, including a self-supporting seat unit.

Further innovative sport design elements include a MotoGP-style dashboard, forged aluminium wheels, Brembo brakes with radially mounted calipers and specially developed Ãƒâ€“hlins front and rear suspension units, making the bike truly track ready.

The endurance racing features of this bike are clear. A first for a Boxer engine, the new stainless steel two-in-one exhaust system is placed under the oil sump, guaranteeing optimum lean angles. The HP2 Sport is also comes complete with adjustable footrests, brake and gear levers to allow for the optimum riding position for both racing and the road.

Although racing potential is clearly at the forefront of the design of the HP2 Sport, this does not mean forgoing safety design features such as ABS. Available on request, this sophisticated anti-lock system has been designed specifically for the model, and has been configured to be switched off for track use.

Tony Jakeman, BMW MotorradÃ¢â‚¬â„¢s Marketing Manager said, Ã¢â‚¬Å“The HP2 Sport is a bike designed for riders with an ultimate passion for sports riding. With numerous cutting-edge sports design features and a high performance engine this model is really leading the way for BMW sport production motorcycles. The bike is indicative of the brand shift that we have taken over recent years, whilst maintaining the uncompromising standards expected of BMW Motorrad.Ã¢â‚¬Â

The on-the-road price of the HP2 Sport is expected to be around Ã‚Â£14,500 (to be confirmed) when the bike becomes available at BMW Motorrad dealerships in Spring 2008.

I have pictures which I will try to upload later. (Which is the best/easiest image hosting site?)

Brian.

DYNAMICS · Post by **DYNAMICS** » Sat Oct 06, 2007 5:55 am

I hope this works...

DYNAMICS · Post by **DYNAMICS** » Sat Oct 06, 2007 6:00 am

DYNAMICS · Post by **DYNAMICS** » Sat Oct 06, 2007 6:04 am

DYNAMICS · Post by **DYNAMICS** » Sat Oct 06, 2007 6:07 am

DYNAMICS · Post by **DYNAMICS** » Sat Oct 06, 2007 6:09 am

Post by **DJ Downunder** » Sat Oct 06, 2007 8:30 am

I want one...I was hoping to see one today at our Motorcycle expo..But they were not there..Bugger!

They said they will cost about $35,000 Aussie..I guess that almost $30,000 US.

Worth it...IMO..

DJ

Post by **Shaman** » Sat Oct 06, 2007 9:50 am

No doubt for BMW fans it might be worth it.
But that money throws it against Ducati and Aprilia on the high high end market. I don't know that the looks will pull fans from the other Euro marquee brands.

Of course, if they start winning some races that will make all the difference.
Winning makes everyone 'look' better.

Post by **CycleRob** » Sat Oct 06, 2007 3:52 pm

Finally!!
A production DOHC BMW. I have been saying for years that a DOHC head is what they needed to get real broad rpm range, peak HP with long component life and reliability. It could even be changed at the new model year as a current shortblock retrofit. It would also bring BMW up to the power levels of Japanese bikes that have used DOHC cylinderheads since the early 1990's. I was disappointed and said so when the new HexHead 1200 Boxer STILL used the same valve gear and had not yet advanced to the DOHC design. I think BMW heard me. Typically, with DOHC, look for an extended valve adjust interval and/or easier owner servicing, unless it's (unlikely) a shim-under-bucket design that requires camshaft removal. More likely, it's common with the new F-800 BMW twin motor's slide-to-the-side rocker for tiny button shim replacement.

The benefits of a DOHC setup is smaller lighter reciprocating parts and thinner/lighter/weaker/smaller valve springs. Also, with (my favorite) Shim-Under-Bucket design, there are zero wear inducing valve stem side loads while also using the absolute minimum number of parts for any design. The DOHC-SUB design also allows the steepest camlobe acceleration/deceleration ramps needed for maximum volumetric efficiency. It's just like free HorsePower.

Lemme see the cylinderhead blueprints!

Post by **Boxer** » Sat Oct 06, 2007 6:22 pm

Robbie, you just gave me a headache.

That bike does look cool though!

Post by **toner87** » Sun Oct 07, 2007 12:23 pm

That is one flaming hot looking bike..... Drool...

Capt. Blackadder · Post by **Capt. Blackadder** » Mon Oct 08, 2007 12:25 pm

Crank up the volume and get a load of this video of the HP2 in action.

Ves · Post by **Ves** » Wed Dec 26, 2007 3:30 pm

Recent ride/review of the bike....

http://www.motorcycle-usa.com/Article_P ... 1827091563

Post by **JCsman** » Wed Dec 26, 2007 7:49 pm

http://www.webbikeworld.com/BMW-motorcy ... r-head.jpg
http://www.webbikeworld.com/BMW-motorcy ... -train.jpg
DOHC cylinder heads, valve actuated by drag lever

A complete redesign of the cylinder heads allowed the Boxer to reach higher revs. Extensive tests in endurance events followed in addition to the usual tests. Double overhead chain driven camshafts (DOHC) and valves actuated by very light drag lever now enable top revs of 9500 minÃ¢â‚¬â€œ1.

The four radially arranged valves ensure extremely compact combustion chambers so that there is no need for the second spark plugs as used in the R models until now.

The compression ratio is 12.5:1. Super Plus with 98 RON is recommended as the fuel for optimum performance although the motorcycle can also run on Super 98 RON.

The horizontal arrangement of the camshafts introduces two special features: Each of the shafts controls an intake and outlet valve and the cams are conically ground. For a higher gas throughput, the valve plate diameter was increased from 36 to 39 millimeters (intake) and from 31 to 33 millimeters (outlet) respectively.

The intake channels were machined for optimization. The operating technology with drag lever works with shims sitting on the valves as in the K 1200 engines. The cylinder head covers are made from carbon and fitted with easy-to-replace slip pads made from PA6 hard plastic.

Does that help?

Post by **OU812** » Thu Dec 27, 2007 12:16 am

Capt. Blackadder wrote:Crank up the volume and get a load of this video of the HP2 in action.

The dynamic rider hammered it!

Ian · Post by **Ian** » Thu Dec 27, 2007 4:45 am

DJ Downunder wrote:I want one...I was hoping to see one today at our Motorcycle expo..But they were not there..Bugger!
They said they will cost about $35,000 Aussie..I guess that almost $30,000 US.
Worth it...IMO..
DJ

i want one too!!!!!
Do u think i can trade a kidney for one!

Post by **CycleRob** » Thu Dec 27, 2007 8:03 pm

Interesting how this "New" DOHC engine looks like it was planned as a retrofit. The camchain uses the same low & narrow cylinder barrel chain tunnel. Easy for the factory to retrofit a R1200R HexHead engine with longer camchains and new DOHC heads. The crankcases do look different.

There was no mention of how the valve clearance is adjusted, but from the pics I see there are only 4 options:
1-- Captive shim change by slide-2-the-side of the drag lever (~Rockerarm).
2-- Eccentric pivot shaft adjustment (my choice).
3-- Hydraulic adjustment (Unlikely because they would be bragging bigtime).
4-- Some new and clever self adjusting ramped follower system. (They should be bragging about)

No matter how you look at it, owner serviceability will be cheap & really easy!! I am more than a little thrilled about this quantum leap in BMW Boxer engine development. I got the DOHC valvetrain I've been pleading for for years. The only thing left now is water cooling.

Here's the website with the whole story:
http://www.webbikeworld.com/BMW-motorcycles/hp-2-sport/

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