F800GS 15 Tooth CS Impressions & Questions

Discussion in 'Parallel Universe' started by Desert Dave, Apr 24, 2009.

  1. Wildman

    Wildman In my castle

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    Blurb said:

    "SUPERSPROX TRI-METAL SPROCKET

    Part number – 6 - 45 (This fits standard 525 pitch, with 45 teeth)

    To Fit:

    BMW F800GS 08 > 09

    Brand new in the pack Supersprox Tri-Metal Sprocket

    These innovative sprockets have an anodised gold alloy centre to give a weight saving over standard with a carbon-steel outer to give the durability and longevity of a steel sprocket.

    · Saves weight over standard steel sprockets
    · Lasts more than 3 times longer than alloy sprockets - Up to 20,000 miles!
    · Stays looking great, as the chain’s running marks stay on the black steel part of the sprocket not the gold alloy part."
    #81
  2. bumbee800

    bumbee800 Adventurer

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    How many links did you need on your chain to get the 45t sprocket on? Did it fit with stock length?
    #82
  3. Wildman

    Wildman In my castle

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    116 links; same as the OEM chain although I've replaced it with a DID and bear in mind that I've come down a tooth on the front sprocket.
    #83
  4. bumbee800

    bumbee800 Adventurer

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    thanks

    What RPMs is the Engine running at in 6th gear at 60mph with you 15/45 combo? Can you cruise comfortably at highway speeds?
    #84
  5. a1fa

    a1fa Throttle Jockey™

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    What is this computer of which you speak of? :evil I threw mine away....

    actually, the BMW did me a favor and did not install it on the bike. :kat
    #85
  6. Wildman

    Wildman In my castle

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    Just off on a jaunt to France so will let you know later having given it a good run.
    #86
  7. Wildman

    Wildman In my castle

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    With me (210lbs), tank bag and Zega panniers loaded for a week away, 4250 rpm at 60 mph. Very comfortable.
    #87
  8. bumbee800

    bumbee800 Adventurer

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    thanks Wildman, sounds like a good combo.:clap
    #88
  9. Wildman

    Wildman In my castle

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    I love it. It's now the bike I wanted. A word of warning; it is affecting fuel consumption (by how much I don't know as I never measured before), the bars and pegs are a little more "zingy" during a long cruise and there is a noticeable lack of "zip" when accelerating in fourth gear. You need to change up quickly. The bike still goes like hell but you've got to make it. For me, I'll trade all of that for the control I now have at low speed. It's a truly phenomenal difference.

    [​IMG]

    [​IMG]
    #89
  10. Wildman

    Wildman In my castle

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    166 miles of riding between 50 and 60 mph (59 miles on national highways; two lane roads with roundabouts and a 90 kph/56 mph speed limit, a short city visit and 107 miles on an autoroute - read Interstate - into a stiff headwind) used 11.85 litres or 3.13 US gallons giving 53 mpg and a 224 mile tank range.

    How does that compare to "standard" fuel consumption?
    #90
  11. bumbee800

    bumbee800 Adventurer

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    That is very comparable with what I am getting with the stock setup. I get about 170 miles just before my fuel light comes on and usually requires 13.5 liters. If I run very close to empty I can get about 210 miles of slow off road riding.
    #91
  12. Karel

    Karel Been here awhile

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    #92
  13. ecce

    ecce Been here awhile

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    On a recent trip my brothers 8gs with 15t was having a noticeable lower consumption than mine running the stock 16t gear. I would say approximately 7% on a full tank.

    Attributed to different driving styles, even though we were driving the same speeds, as well as his bike having traveled faaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaar more kilometers than mine.

    We both have the laaaaaaaaaaatest software mapping from bmw.

    So I am hoping the 15t on my bike wont make that much of a fuel difference as I and my bike are gradually getting more mature..
    #93
  14. Trout

    Trout Been here awhile

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    Got my 15t yesterday - changed it out last night - soooo easy! Could probably be done at the trailhead if one were so inclined.
    #94
  15. WOLVERINE

    WOLVERINE Keep her pinned!

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    Anyone else notice the 15t sprocket from TT being rough cut? I haven't installed it yet to try out but it looks rough around the tooth edges or is that normal and will wear off in a few miles?
    #95
  16. Trout

    Trout Been here awhile

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    Which version did you get? The 048-0481 I ordered/received was finished nicely. I was kinda surprised considering how inexpensive it was.
    #96
  17. itsatdm

    itsatdm Long timer

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    I noticed that on mine too. Other than a ride check I haven't run it. I didn't know they made 2 versions until I ordered a 17 tooth. That one was nicely finished and much better quality. I think they only shipped it to me because they were out of the cheap ones.
    #97
  18. WOLVERINE

    WOLVERINE Keep her pinned!

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    I ordered the 048-0480. I guess I'll spend the 8$+ next time to get the better quality!
    #98
  19. GSThor

    GSThor Down & Dirty

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    Do you need to break the chain to install it?
    #99
  20. WOLVERINE

    WOLVERINE Keep her pinned!

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    Nope! Just loosen the chain adjuster to create slack and Voila!