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xcel
09-10-2009, 03:57 PM
http://www.cleanmpg.com/photos/data/2/Canadian_Flag.jpg Canadian arrival is imminent although shorter gearing is not a welcome sign :( (cleanmpg.com/forums/showthread.php?p=232146)

http://www.cleanmpg.com/photos/data/501/2010_BMW_F_800_R.jpgWayne Gerdes - CleanMPG (cleanmpg.com) - Sept. 10, 2009

2010 BMW F 800 R - $9,990 to start. Rated at 65 and 49 mpg at 56 and 74 mph respectively.

BMW Motorrad Canada announce that the much anticipated F 800 R Sport Roadster will join the F 800 Series lineup this fall, arriving in BMW Motorrad retailer showrooms mid-September.

The BMW F800R will launch with an MSRP of $9,990 and be available with a compliment of factory options, including ABS brakes, Tire Pressure Control, On-board computer, Sport windshield, White turn Indicators, and an integral Anti-Theft Alarm system. Both low and high seat options are available at no charge on factory orders.

Launched in Europe in late 2008, the F 800 R Sport Roadster emulates the mighty K 1300 R Power Roadster in design and is the fourth model in the evolution of the F 800 Series lineup.

Technical Highlights
The heart of the new F 800 R is the now familiar 798cc parallel twin shared within the F 800 family, rated at 87 HP @ 8,000 rpm while delivering 63 Lb-Ft. of torque @ 6,000 rpm. The additional two horsepower, when compared to the other F 800 family members, is due to a redesigned exhaust system. The powerplant also features intake manifold fuel injection, electronic engine management, oxygen sensor and separate closed-loop 3-way catalytic convertor and secondary air system, for low fuel consumption and optimized emissions.


The F800R has a slightly longer swing double-sided arm (5 cm) cast in light alloy and shorter caster than its (now discontinued in Canada) F800S sibling and reduced spring clearance at both the front and rear, along with a fork stabilizer to provide even better stability and agility.


In keeping with its pure Sport Roadster nature, and unlike its F 800 S and ST brethren, the F 800 R incorporates an O-ring chain secondary drive.


With 12.6” brake discs and Brembo 4-piston fixed brake calipers at the front wheel, and a 10.4” rear discs with a single-piston floating caliper, the F 800 R brake systems emulates that of high-displacement sport bikes. The new F800R ABS system, engineered in cooperation with Bosch, has been further developed and it now also has an improved lift-off detection system for the rear wheel.


Gears ratios in the F 800 R gearbox are identical to the F 800 S and ST from first through third gear, with shorter gearing in fourth through sixth gears.


Contributing to the excellent handling dynamics of the F 800 R are balanced weight distribution and a fully-fueled weight of only 449 lb (unladen 400 lb.).


The F 800 R wears the same “Speed”-style wheels as the F 800 S – with a 3.5 x 17” front rim wearing a 120/70 ZR tire, with a 5.5 X 17” wheel sporting a 180/55 ZR 17 tire.


Asymmetrical H7 headlights echo the design of its K 1300 R Power Roadster sibling.


As introduced with the new K 1300 Series bikes, the F 800 R incorporates new compact MID (Moulded Interconnected Devices) technology, highlighted by a left-handlebar multifunction signal switch.


Three dynamic paint finishes are available for the F 800 R: White Aluminum Metallic, Flame Orange and Alpine White/Black Silk – all in combination with a black seat.

MrGutWrench
09-11-2009, 12:44 PM
Interesting. "Rated at 65 and 49 mpg at 56 and 74 mph respectively. " I'm about to roll up to 200K miles since I bought my first VW TDI; I've averaged almost 54 MPG overall, and about a third of that has been in a Jetta wagon. Why do motorcycles get such poor MPG? My '72 Norton with Amal carburretors would do 50 MPG at 70.

xcel
09-11-2009, 04:08 PM
Hi MrGutWrench:

___Mostly because bikes have ~ the same aerodynamic drag (~ twice the Cd and half the frontal area with rider) and are tuned to do 0 - 60 in less than 4-seconds. There are other items such as only one or two cylinders that are not able to put out an appreciable amount of torque at anything below 2,000 R's to get the bike and rider moving let alone idle. Additionally, gearing for 60 mph is usually in the 3.5 + K range. Far beyond that of an automobile and its a fuel economy killer. Whenever I review a bike, I am always looking for another two gears on top of fifth or sixth and they are always missing :(

___When the Bike manufacturers get with the FE program, they will bring us some really spectacular vehicles but right now, the average rider does not care or know what he or she is receiving on their bikes. Most think 50 + is really good... What they do not know :( Fortunately for us, the two 250's we have reviewed so far have both come in at over 100 mpg with the Honda really banging one out in stop light and stop sign to light and sign traffic of LA. I am hoping to take out a Kawasaki 250 this winter in LA for our final 250 review just to make sure but they are all surely capable of 100 + mpg and have 0 to 60 times of easily under 10 seconds :D

___Good Luck

___Wayne

Earthling
09-11-2009, 08:13 PM
Why do motorcycles get such poor MPG? My '72 Norton with Amal carburretors would do 50 MPG at 70.

Engine displacements are usually larger than necessary, with engines tuned for horsepower and acceleration.

Drag is a huge issue. Motorcycles are generally have much higher drag coefficients than cars.

Here are some exceptions:

http://www.craigvetter.com/pages/470MPG/Vetter%20Fuel%20Economy%20Contests.html

In a contest, one bike achieved 470 mpg.

Harry

alvaro84
09-12-2009, 07:44 AM
Hi MrGutWrench:

___Mostly because bikes have ~ the same aerodynamic drag (~ twice the Cd and half the frontal area with rider) and are tuned to do 0 - 60 in less than 4-seconds. There are other items such as only one or two cylinders that are not able to put out an appreciable amount of torque at anything below 2,000 R's to get the bike and rider moving let alone idle. Additionally, gearing for 60 mph is usually in the 3.5 + K range. Far beyond that of an automobile and its a fuel economy killer. Whenever I review a bike, I am always looking for another two gears on top of fifth or sixth and they are always missing :(

___When the Bike manufacturers get with the FE program, they will bring us some really spectacular vehicles but right now, the average rider does not care or know what he or she is receiving on their bikes. Most think 50 + is really good... What they do not know :( Fortunately for us, the two 250's we have reviewed so far have both come in at over 100 mpg with the Honda really banging one out in stop light and stop sign to light and sign traffic of LA. I am hoping to take out a Kawasaki 250 this winter in LA for our final 250 review just to make sure but they are all surely capable of 100 + mpg and have 0 to 60 times of easily under 10 seconds :D

___Good Luck

___Wayne

I miss the lower rpms and higher gear(s) too... strange that more cylinders are usually told to have worse FE, and now this claim about their rpm range - is it really impossible to tune a single to be able to work adequately under 2000rpm (under load)? If so, more cylinders could have an edge (if they were tuned for FE, not for top end performance)... Aerodynamic drag must be a serious problem - we own 2 bikes and I get better FE with the 650cc single than with the 250cc V-twin (93 vs 83 mpg best tank), and I suspect the problem must be their Cd (I know that the Hyosung 250cc V-twin can achieve better FE, the model with full fairing can get better numbers, even when not hypermiled). If you look at them you may agree.

http://i259.photobucket.com/albums/hh287/shiNIN666/motor/ketten.jpg

And of course the 250 should have longer gears too. It's nice to cruise in 5th at 40km/h, just under 3000rpm, but that shaft spins like crazy on the highway (7000 rpm at 100km/h while it's 4000 rpm with the 650. Still could be lower, but better nonetheless). Almost like a stock 250 Ninja, it's just V instead of a parallel twin.

xcel
09-12-2009, 02:17 PM
Hi Alvaro:

___Thank you for your own real world experiences with the 250 and 650!

___I found it surprising that the 09 Honda XR 650L we rode earlier this spring and the BMW F 800 GS came so close to one another with the BMW being much more powerful and feature full. When pushed, the 800 actually bested the big 650 (74.7 vs. 72.5 mpg) thanks to fuel injection more than likely?

___The two big bores, the single (Honda XR 650L) and dual (BMW F 800 GS), did not come anywhere near the Honda CRF 230L and Yamaha XT 250 we rode last year. In fact, both were behind by a rather large margin so the small bores still have a large advantage but that high RPM non-sense at 60 mph has got to be put to bed ASAP! Even on the XR 650 and 800 GS, I was always looking for another gear and it was never ever there :(

CleanMPG observed FE

Honda CRF 230L - 127.9 mpgUS
Yamaha XT 250 - 104.1 mpgUS
Honda XR 650L - 69.3 mpgUS
BMW F 800 GS - 68.4 mpgUS

___Good Luck

___Wayne

alvaro84
09-12-2009, 04:20 PM
Even on the XR 650 and 800 GS, I was always looking for another gear and it was never ever there :(

Well, at least Teresa prevents me from looking for a 6th gear under most circumstances, because her engine very clearly complains against any load under ~2800rpm in 5th gear, which means that this 5th begins at (or over) ~70km/h if I ever plan on accelerating or hill climbing. Should she have a 6th, it would probably be completely unusable under 90-100km/h (let's say 60mph). It would still be good for freeway riding, but it would also leave me with the question if it's worth to shift up to 6th and having to ride over ~95, or I'm better off with going at ~70-75 in 5th... (not unlike now - I'm not totally sure if 5th at 70-75km/h, 2.8-3k rpm is better than 4th at 50km/h, 2.5k rpm because glides feel much longer at lower speeds, but that's fine, those are very legal - albeit a bit slow - speeds outside freeways while it takes much longer to get anywhere at 50km/h. And 90->70 P&G seems to work quite well when I'm in the mood for it... and it makes my grip stronger :D)

(Note that she can effortlessly climb up in 5th somewhat under 2800rpm when close drafting big trucks, but that's not safe and not fun. Aerodynamics again...)

edit. One more thought about the two bikes: I can't prove it but I think that Ciliegia (the Hyosung GV250) can do better around town, but city riding is not my usual activity, so I don't have enough experience.



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