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Thread: Question on size of tank and travel for 750/850GS

  1. #1
    Registered User cowchip's Avatar
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    Question on size of tank and travel for 750/850GS

    I am close to selling my current R1200RT and moving down to a F750GS. Looking at a weight loss of about 75 pounds or so. Will it make a difference? Who knows. I am use to traveling on a full tank which is 6.2 gal. How does touring on a 4 gal bike work out? Still trying to get my head around daily chain oiling and adding a bunch of farkels to make the bike ready for comfortable touring.

    Thanks,
    Don
    2011 R1200RT
    Mar Vista, CA

  2. #2
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    Quote Originally Posted by cowchip View Post
    I am close to selling my current R1200RT and moving down to a F750GS. Looking at a weight loss of about 75 pounds or so. Will it make a difference? Who knows. I am use to traveling on a full tank which is 6.2 gal. How does touring on a 4 gal bike work out? Still trying to get my head around daily chain oiling and adding a bunch of farkels to make the bike ready for comfortable touring.

    Thanks,
    I don’t know about the gas capacity question buy on the “daily chain oiling”......?

    Maybe you haven’t had a chain in a while- they are very durable. Here is a recent thread on “chains”.

    https://forums.bmwmoa.org/showthread...ance-Questions

    Good luck.

    OM
    "You can do good or you can do well. Sooner or later they make you choose." MI5
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    2009 F800GS 1994 TW200

  3. #3
    I am not sure of the 750 details but would think you will have about a 200 mile range. All this means is you need to be a bit more careful about gas stops if touring in the plains and mountain west. I think chain lube every 500 miles or so; but you can always get that new maintenance free chain BMW has advertised. You still need to keep it clean though.

    Voni and I have been touring on our G310GS bikes with 2.9 gallon gas tanks and it was a fairly easy adjustment to get fueling stops right. We do carry a 1 liter MSR bottle of fuel on each bike.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
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  4. #4
    SURVIVOR akbeemer's Avatar
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    Annie and I made a three round trips between Alaska and Montana with her riding her F650GS (Twin) and me on either an 07RT or 08R. We always got fuel together and she did not carry any extra fuel. Range was never an issue for her on that bike. She still has a F800GS and again the range on that bike is not an issue when we ride together regarless of what I ride, except my R1200GSA. But even when I'm on the GSA her fuel range is much longer than my butt's range.
    Kevin Huddy
    Silver City, Montana
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  5. #5
    Registered User Motodan's Avatar
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    Four gallons is about right for these. I can tell you you'll no doubt get better MPG then on your RT. My personal experience was 54-57 MPG on both 750 and 850...with reasonable throttle control at 5-10 over highway speed limit. I was pushing a Madstad 20" windshield system and pulling Vario bags - solo. AND, be sure to get one with or add a center stand...will make chain maintenance 90% easier.
    '17 RT
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  6. #6
    Bluenoser
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    Smaller engine in most cases will get better mileage, unless being pushed, so the range shouldn't end up being a problem. In my case my butt needs a break before the bike needs fuel.

    If you find the chain oiling a chore, look into a chain oiler. I've had a couple on my chain bikes and once set up make chain oiling much easier. Not everybody likes them, like most things we put on our bikes. I like the electric oiler, as you can add or subtract oil activation or turn it off when in the dirt. Fairly expensive but work well. Other type use engine vacuum so harder to adjust to conditions.
    1986 K100RT

  7. #7
    Quote Originally Posted by cycleman2 View Post
    In my case my butt needs a break before the bike needs fuel.
    The issue is the spacing of gas stations in parts of the west. I live on a highway, Texas 118, where the gas stations are 79 miles apart: 54 miles to my north and 25 miles to my south. I can point to another dozen or so stretches in Texas, New Mexico, Montana, and other states. I keep on hand a supply of a few gallons fuel for self-stranding motorists.

    The range issue is one of planning and the mantra fuel early and often. Two hundred mile range means nothing if that 200 mile range gets you half way between fuel stations that are 80 or more miles apart. This is seldom an issue in Rhode Island. It is is Montana where not every spec on the map even has a gas station.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  8. #8
    Registered User drneo66's Avatar
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    Here's my write-up for my F800GS as to make it more comfortable for long distance touring

    I added a Camel Tank aux. gas tank (no option yet for the 850) to increase my range to a solid 200 miles at ~75 mph with my Madstad windshield and aluminum bags.

    Adding an electronic Scottoiler took care of my chain issues.

    I too have an RT and found that they are pretty similar as the 800, as the 800 gets that much better gas mileage. The weight is noticeable, but I think I'd also tie that to a different riding position, stance, and wider bars.
    Current: 2007 BMW R1200RT, 2013 F800GS
    Former: 1995 BMW K75S, 2009 BMW G650GS
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  9. #9
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    From the F750GS Manual:


    Manual states 57MPG so you can ride 228 miles in ideal conditions until you're pushing it.


    (sorry for this jerk comment, but why didn't anyone just look at the owners manual?)

  10. #10
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    Quote Originally Posted by adamchandler View Post
    From the F750GS Manual:


    Manual states 57MPG so you can ride 228 miles in ideal conditions until you're pushing it.


    (sorry for this jerk comment, but why didn't anyone just look at the owners manual?)
    Looked like only 1 person in the thread owned one. Seems like real world experience is better and realistic anyway.
    OM
    "You can do good or you can do well. Sooner or later they make you choose." MI5
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    2009 F800GS 1994 TW200

  11. #11
    Registered User cowchip's Avatar
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    F750GS fuel and comfort

    Quote Originally Posted by adamchandler View Post
    From the F750GS Manual:


    Manual states 57MPG so you can ride 228 miles in ideal conditions until you're pushing it.


    (sorry for this jerk comment, but why didn't anyone just look at the owners manual?)

    I downloaded the manual, and yes, I should have done that earlier. I also see I can use unleaded. That is good. I too need to stop well before my fuel is empty, especially if I have coffee in the morning. Just trying to convince myself that a new smaller bike will be easier for me to move around and be comfortable. Bar risers, a better seat and a real windshield is a must.
    Thanks everyone. The 2021 Blue is calling me.
    Don
    2011 R1200RT
    Mar Vista, CA

  12. #12
    Quote Originally Posted by adamchandler View Post

    (sorry for this jerk comment, but why didn't anyone just look at the owners manual?)
    Because I don't own that model bike or that model bike's owner's (with the apostrophe correctly denoting possessive) manual. But I do have experience touring all over the US with a 2.9 gallon tank.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  13. #13
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    Quote Originally Posted by cowchip View Post
    I downloaded the manual, and yes, I should have done that earlier. I also see I can use unleaded. That is good. I too need to stop well before my fuel is empty, especially if I have coffee in the morning. Just trying to convince myself that a new smaller bike will be easier for me to move around and be comfortable. Bar risers, a better seat and a real windshield is a must.
    Thanks everyone. The 2021 Blue is calling me.
    We love our F750GS. It's a very good bike. Minimum for touring would be windscreen, larger foot pegs, grip puppies and an aftermarket seat. Everything else is just extra fun stuff but off the floor, it's a great touring bike. We throw a duffel on the back seat and that's enough for an overnighter.

    Quote Originally Posted by PGlaves View Post
    Because I don't own that model bike or that model bike's owner's (with the apostrophe correctly denoting possessive) manual. But I do have experience touring all over the US with a 2.9 gallon tank.
    I knew my comment wouldn't go over well but data over guesswork is far more important. Like oil threads, let's start with what the spec is then allow for the '@ home engineers' to give their opinions but you gotta start at the real numbers. I just felt my head spin seeing a full page of guesses and no one referencing the specs. I thought at the very least, let's cite the manual.

    I don't want anyone here to feel attacked or feel they have to defend their post. I just was amazed so many posts went by that were guesses.

  14. #14
    Quote Originally Posted by adamchandler View Post
    We love our F750GS. It's a very good bike. Minimum for touring would be windscreen, larger foot pegs, grip puppies and an aftermarket seat. Everything else is just extra fun stuff but off the floor, it's a great touring bike. We throw a duffel on the back seat and that's enough for an overnighter.



    I knew my comment wouldn't go over well but data over guesswork is far more important. Like oil threads, let's start with what the spec is then allow for the '@ home engineers' to give their opinions but you gotta start at the real numbers. I just felt my head spin seeing a full page of guesses and no one referencing the specs. I thought at the very least, let's cite the manual.

    I don't want anyone here to feel attacked or feel they have to defend their post. I just was amazed so many posts went by that were guesses.
    I just looked at his original question: "How does touring on a 4 gal bike work out?"

    That is not exactly the same as what the expected MPG might be. And actually not a question easily answered in an Owner's Manual.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  15. #15
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    Quote Originally Posted by PGlaves View Post
    I just looked at his original question: "How does touring on a 4 gal bike work out?"

    That is not exactly the same as what the expected MPG might be. And actually not a question easily answered in an Owner's Manual.

    Understood. I'm also new to this forum so I don't know exactly what the tone / response is for a lot of things. I'll try not to step on anyone's toes going forward.

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