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Bought another bike! Yamaha xs850 special

This is a discussion on Bought another bike! Yamaha xs850 special within the General forums, part of the Caferacer.net Forums category; Agreed it won't ever make a good cafe racer with the emphasis on racer. It can be stripped down, restyled and with a few mods, ...

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Thread: Bought another bike! Yamaha xs850 special

  1. #11
    Senior Member drgonzo's Avatar
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    Agreed it won't ever make a good cafe racer with the emphasis on racer. It can be stripped down, restyled and with a few mods, better suspension and ultimately a bike more fun to ride. That should be the goal, make it yours, make it better and more fun.

  2. #12
    Senior Member thechief86's Avatar
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    Thanks for the thought. I guess I'll just be chasing the look, then. I've had an r1 and loved it, but now I
    have more important things to pay for that a $10k motorcycle. This is just to get me back in the wind,
    although I think the stock look of the bike is pretty ugly.
    oh well...
    It ain't easy bein' fat and greasy.

  3. #13
    Senior Member thechief86's Avatar
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    ok, so I have started removing stuff from the bike, and got it running. I am going the route of making it as light as I can, and improve handling the best I can. What would you guys suggest for an inexpensive upgrade? I can't afford a later fork setup just yet, but I did put a fork brace on it already. I also think I will go the route of something like dirtbike handlebars instead of clubmans, and keep the stock controls on it. If it will never fit into the realm of café racers, might as well give up on things that will make it less comfy for the sake of looking cool. I do think I want to cut the rear section of the frame and hoop it, though, for the look of the short tail, and to get rid of that enormous seat and taillight.
    It ain't easy bein' fat and greasy.

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  5. #14
    Senior Member Geeto67's Avatar
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    If you are really determined to cut the frame, get all other pieces first and make sure the bike is assembled with the custom parts you will use (even if just a mockup). That means if you are planning a wide tire have that already done. This way when you cut and begin to weld you can check for clearance as you go and your finished product can run tighter without guess work.

    Most people who put frame hoops on forget this and most I have seen have some clearance issue.
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  6. #15
    Senior Member thechief86's Avatar
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    thank you! that's why I'm here. For a heads up on the little things that I might overlook in my journey toward a better looking/riding version of the machine I have. Should I make my seat before the cut as well? Or do some measuring and make the seat, then make my hoop to fit? does the hoop do much to stiffen the frame, or is it just a way of tying up loose ends that will be exposed by a smaller seat?
    It ain't easy bein' fat and greasy.

  7. #16
    Senior Member o1marc's Avatar
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    Quote Originally Posted by thechief86 View Post
    thank you! that's why I'm here. For a heads up on the little things that I might overlook in my journey toward a better looking/riding version of the machine I have. Should I make my seat before the cut as well? Or do some measuring and make the seat, then make my hoop to fit? does the hoop do much to stiffen the frame, or is it just a way of tying up loose ends that will be exposed by a smaller seat?
    There is usually a "bridge" under the stock seat tying the 2 sides of the upper frame rails together between the shock mounts. This bridge is often cut off when modding frames and the hoop is welded onto the tail to bring the strength back lost from cutting it off. If you are going that route I would do the hoop first and then built the seat to fit.
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  8. #17
    Junior Member 68vistacruiser's Avatar
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    Quote Originally Posted by thechief86 View Post
    I thought the shaft drive was kind of cool. It never bothered me on my old guzzi. Do they suck on jap bikes?
    Would it make it handle like crap to just leave that part alone? Seems like the ring and pinion outlasts the
    average chain and sprocket set, but doesn't offer the option of changing ratios...
    I was thinking I'd get a smaller seat and a set of clubmans, and kind of strip it down to start.
    As time and money would allow I'd try to adapt some later crotch rocket forks and clip-ons to it. Is there anything wrong with gutting the
    stock megaphones until I can afford a 3 into 1?
    I personally own a 850 special, and I can tell you that "shaft jacking" is more a myth than a reality. When you accelerate extremely hard, the force on the swing-arm because of the drive shaft will raise the bike's rear end a little. Will you notice it? Probably not. Will you care? Absolutely not. If I was going to do what you're doing, I would get a larger rear wheel from a standard 750 or 850. The tire is smaller so the overall outside diameter will be about the same, but it will look better. Forget about chain drive as its not worth the trouble and especially not worth the price. Now you can get a big bore kit for these that will turn the stock 826cc into a true 900cc engine. That will run you around $400 or so for parts. Swap out the Hitachi carbs for Mukinis, get a 3-1 exhaust, pods for the carbs or even better a single filter like you see in this link... 1980 Yamaha 850
    Finally, after you're done cutting up the back and putting you custom seat on it, you can sell me your original seat, as I have need for it. Sign up at Yamaha-triples.org to get more ideas and parts for this bike, and you can PM me over there about your seat.
    binrocha likes this.

  9. #18
    Senior Member Joep7's Avatar
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    Depends a lot on the bike. My cb900c is as smooth as a belt or chain. M xs11....pretty bad shaft jack. Especially in town or parking lots.

  10. #19
    Junior Member 68vistacruiser's Avatar
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    Quote Originally Posted by Joep7 View Post
    Depends a lot on the bike. My cb900c is as smooth as a belt or chain. M xs11....pretty bad shaft jack. Especially in town or parking lots.
    Most of the complaints I hear about it has to do with the 1100. They have a slightly higher final drive ratio, and with all that engine mass and power it must be noticeable. On a 850, nope. I own a 850 triple and a 650 maxim four cylinder with shaft drive, and I personally don't notice it, or at least care about it.

  11. #20
    Senior Member mlinder's Avatar
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    The seca 650 I had for a while had no lash. That bike with a stage III dynojet did around 120, so made plenty of power, never had handling weirdness or jerky acceleration due to the shaft. Neither did my r75/5, though there was a bit of the bike wanting to lean a bit due to crank positioning, when nailing the throttle.

    The monster-torque of the xs1100, I'm sure, makes things a little different.
    Last edited by mlinder; 09-05-2013 at 08:27 AM.
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