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Bmw F800gs Q&A

Discussion in 'Parallel Universe' started by RTW Motorcycling, Aug 24, 2008.

  1. Wildman

    Wildman Long timer

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    Let me get this right because a mechanic really messed with my head last week when talking about this. Is that one tooth on the front i.e. from 16 to 15?
  2. Keystone

    Keystone Been here awhile

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    Yes. Reducing a tooth on the front means that the sprocket will turn fewer chain links per revolution, so groundspeed will be slower for a given engine speed.

    Similar effect can be had from increasing the size of the rear sprocket, in which case the same links are turned by the engine, but the rear wheel does less with them. Based on the gear ratio moving a tooth on the front sprocket is roughly equivalent to a three-tooth change in the opposite direction on the rear sprocket.

    Front sprockets are also easier to pack if you want the option of swapping back and forth on a trip with long highway punctuated by off-road riding. Don't forget your torque wrench.
  3. Lucky:)

    Lucky:) Been here awhile

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    Right, front from 16 to 15
  4. Wildman

    Wildman Long timer

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    Excellent. I guess going up on the back from 42 to 47 would take it even further.
  5. Lucky:)

    Lucky:) Been here awhile

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    up to 5,000
  6. Lucky:)

    Lucky:) Been here awhile

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    Does the stock chain has enough length for 47?
  7. MTrider16

    MTrider16 Ridin' in MT

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    Will you need a longer chain to make this work?

    Ratios for comparison:

    42/16 = 2.625

    42/15 = 2.8

    47/16 = 2.93

    David
  8. Lucky:)

    Lucky:) Been here awhile

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    I think for 47/16 you'll need longer chain.
  9. Keystone

    Keystone Been here awhile

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    It was more of a rhetorical question for dbOnIce...my break in period was 11,000 miles ago at this point. I generally consider the manual and sources who draw a check from BMW NA as being more authoritative than the average dealership employee.

    (Note: I said average -- there are outstanding people in the dealership network, but until I know that about them I don't feel I can trust what they tell me any more than I can a post from one of you.)
  10. Migs

    Migs Sometimes we cry with everything except tears.

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    Where are all the images in this thread? I'd like to see them but all I get is the text... :confused

    -Migs
  11. Migs

    Migs Sometimes we cry with everything except tears.

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    Dear RTW:

    Can you post a packing list of what was on your bike? How did you take the other stuff not on your bike? Do you have a list of that as well?

    Thanks amigo - because this is a very interesting thread!

    -Migs
  12. Wildman

    Wildman Long timer

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    I'm guessing that RTW's picture hosting deal has expired so his pic links aren't working anymore. He's still around so you may get an answer to your question and maybe even a new link to his pics.
  13. Lucky:)

    Lucky:) Been here awhile

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    the images definitely were here.
  14. browneye

    browneye PIN IT & BANG GEARS

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    I just read thru the whole thread, took a couple of hours. It's outstanding. Still trying to decide on whether to try and get a F800.

    Anyway, the thread died about a year ago, look at the post dates. Maybe we can get RTW to bring it current again. What a great read.
  15. Migs

    Migs Sometimes we cry with everything except tears.

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    Get one! I enjoyed this thread too and it would have been great to get some answers too.
    -Migs
  16. Lucky:)

    Lucky:) Been here awhile

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    What are your concerns about F800GS?
  17. inmate-n00b

    inmate-n00b Ciao, Marco

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    Hello RTW.
    Thanks for sharing so much information.

    You said that you created your own engine guards and luggage rack.
    Could you post photos of them? Maybe some comments on your design considerations.

    Thanks! You're awesome.
  18. browneye

    browneye PIN IT & BANG GEARS

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    $$
    weight

    Actually decided on a new KTM 450EXC and then decided to just keep what I've got for the time being. I have a great road bike and a great offroad bike. Not sure exactly how I would replace the two with one. :D
  19. Lucky:)

    Lucky:) Been here awhile

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    You right about $$, weight.

    F800GS can't combine good off/on road bikes. It's kind of adventure bike.
  20. Wildman

    Wildman Long timer

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    Missed this. Stock chain had enough length for the change I made which was from 16/42 to 15/45.