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Discussion in 'GS Boxers' started by Dorsicano, Feb 3, 2011.
Na ... it opens a new class of bikes: Sporkbikes.
I figured that might be the case. BMW tends to quote weights for bikes in a basic spec (no ABS or other goodies), and I suspect that the 229 kg weight of the GS on their website was optimistic in any case. Certainly when the GS has been independently weighed, it's around the 240 kg mark.
BMW's listed weights are optimistic. Someone at the link below weighed a fully fueled 1200GS and it was nearly 243kg. The GSA was 273.
The new WC/GS looks very, very promising (I really like it). However, whats its wheelbase and head angle? If BMW went to "sport" with these changes, I just might stay old school with the previous version, because of its near perfect balance of canyon carving/stay with sport bikes and ability to tour.
All the dimensions are on the BMW website.
Like Paladin said right behind you... the Camheads have the sight glass on the left and fill on the right.
Its really fun topping off the oil when you have to keep running around to the other side check the level :huh
Maybe there is a bit of (odd) German logic to this:
"Vell you tipp ze little bit of oil, and by ze time you have valked around ze motozikle to ze sight glass, ze oil level vill have settled out, zo you know PRECIZLEY! How much more oil it needz. Ya, this is good Cherman logic. Sure, it takes you 5 minutes to do thirty second job, but what price PRECIZION!"
Oh, I missed that! Why on earth would they have done that to the cam heads?
Because every doofus using the sight glass to judge oil top-offs on the oilheads ended up overfilling them. Oilhead hint: add 4 oz, check level. If still low, add 4 oz more. Stop.
For those wondering what a new ADV will look like, this early leaked post from Wunderlich pretty much nailed the look of the standard GS. It also has a view of an ADV model (looks like an ADV model, at least).
Gives me hope that the ADV will look less DB.
Hey!! I resemble that comment!!:fyyff
I am at home and don't have the 46 page tech specs in front of me.... But the LED headlight is an option. Halogen is standard. The pics I saw show what appears to be a full LED light assembly. I'll check when I get to work this morning.
+1 on what EJ_92606 said .....
Halogen with LED daytime running lights (below right of halogens):
Full LED option with daytime running light ring, high beam, low beam, etc:
The area taken by the halogen version daytime light is left open on the full LED version for cooling of the headlight assembly.
Wow looks like the LED headlight assembly needs an electric motor and fan to cool it....... engineering if so.
I am wondering how are they going to filter the air going into the headlight.
Yeah that has me scratching my head. LEDs use a lot less power and should run cooler. That's kind of the point!
True but the heat is at the rear of the LED module, usually large cooling fins required... front is cold. I read somewhere that there could be a problem in the winter with snow not melting, so the fan also brings the hot air from the rear to front of the glass....
Cooling problems is a large challenge of LED car lights
</HEADER>Normally, the light efficiency (photoelectric conversion rate) LED lights is no less than 80lm/W, but the light efficiency of HID lamps can reach up to 90lm/W, halogen lights have even higher light efficiency 201lm/W. According to a recent report, the latest LED technology can increase the light efficiency into a higher level of 161lm/W, which was treated as a breakthrough of LED lighting technology. It is also estimated that in the next 3-5 years, LED light efficiency can be improved by 50% within the same power consuming range. This will not only means that LED lamps will be brighter, but also consumed much less power.
However, lamps with higher light intensity will generate more heat. And the compact arrangement of LED car lights will exacerbate this problem. Even as semiconductor, LEDs produce much less heat than halogen lamps and HID lamps do. But the problem is, heat generated by halogen lamps and HID lamps is usually in the outside of lamps while the tiny heat generated by LED devices is concentrated within chips. Special cooling sections need to be used to conduct all these heat outwards.
Even ignorable heat concentrating onto the small-sized chips still dramatically increases the LED chip temperature due to the limited thermal capacity. The working temperature of LED should keep under 150℃. One solution for this problem is: using multiple LED chips within on lamp, reducing the thermal generation of single chip. Then arrange them in a relatively large space to help dissipating heat. It is an approach that adopted by Koito on Toyota Lexus LS600h series.
According to one manager of Hella, thermal dissipation is one of the most difficult parts of virtual design of LED car lights. The usual process is evaluation and optimization through related simulation software. The selection of simulation package must base on a large amount of experiment results. Challenges from thermal dissipation not only from heat conduction (transfer all heat outwards through “hot pool”, but also ventilation problems. Obviously, natural ventilation is far less enough, so designers from Hella decided to use built-in fans.
Valeo applied another set of thermal management strategy: they set a safe working mode for LED car lights. When the temperature raise to a predetermined value (alert), the control system will automatically turned into the safe mode by cutting the power by 20%. This will cause tiny influence to the brightness of LED lamps, but can effectively maintain the working temperature in a normal level.
Thanks for the images, Paul. I guess my confusion as to what we're getting in the U.S. arises from the fact that I don't see these listed under the Accessories tab for the New R 1200 GS on the BMW USA website
it only speaks to the auxiliary LED's. I certainly hope we'll see them.