My full custom 2008 TW250F
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  1. #1
    Senior Member zardoz's Avatar
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    OK ... so I'm looking for an "interesting bike" and I spot this 2008 TW200 for sale. It was advertised as a Custom 2008 Yamaha.



    I go and check it out and I like it. I take it for a ride and decide to buy it!







    This is what it looked like when the po/builder decided to transplant a freshly rebuilt 2003 YZ250F engine.



    He manufactured his own frame sections to accommodate the new power plant. I think he did a pretty dam good job



    z
    Full custom 2008 TW200/250 build pics of my bike... I call her TW (short for "Twice Wicked" for her almost doubled HP Hidden Content )



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    Newest member of the herd... 1987 Honda CBX250... this bike will become a board tracker this summer



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    Bought another bike last fall (2012) ... 1982 Kawasaki KZ305 it's a "mostly done" bobber project I got for practically nothing



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  2. #2
    Senior Member zardoz's Avatar
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    I have a notion to do something like this to it..







    The tank is a 5 gallon Harley Fatboy tank, looks reasonably easy to modify for my purposes. The seat is .. I believe the rear seat from a suzuki cruiser style bike. I'm open to options for a seat tho... but funds are a bit restricted just now.



    z
    Full custom 2008 TW200/250 build pics of my bike... I call her TW (short for "Twice Wicked" for her almost doubled HP Hidden Content )



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    Newest member of the herd... 1987 Honda CBX250... this bike will become a board tracker this summer



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    Bought another bike last fall (2012) ... 1982 Kawasaki KZ305 it's a "mostly done" bobber project I got for practically nothing



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  3. #3
    Senior Member zardoz's Avatar
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    I have a kickstart lever coming for the bike. The one that was provided with the bike was home made.. and to be honest it SUCKS! The factory one that I have coming will need to be modified to clear frame sections.. but it's do-able. I have a 6 inch 12 volt "Spall" pusher fan coming to help out the radiator in case of overheats, that rad is a lot further away from the water pump than was intended by Yamaha's design team.



    z
    Full custom 2008 TW200/250 build pics of my bike... I call her TW (short for "Twice Wicked" for her almost doubled HP Hidden Content )



    Hidden Content



    Newest member of the herd... 1987 Honda CBX250... this bike will become a board tracker this summer



    Hidden Content



    Bought another bike last fall (2012) ... 1982 Kawasaki KZ305 it's a "mostly done" bobber project I got for practically nothing



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  5. #4
    Senior Member zardoz's Avatar
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    I answered another thread on lowered seating position and got some good info from lizrdbrth and Flingwing. I don't want to thread poach the other thread so I'm gonna re-open the topic here.





    I'm curious... what would be the result on handling if the rear was lowered through the extra hole method and the forks left where they are from the factory? I suspect this would make the front wheel "less inclined" to turn? Kinda like the choppers of yesteryear..? I ask because my bike has a fair bit "more power to the ground" than most of your bikes... as a result the front end can get out of hand at speed... kinda "twitchy" if you know what I mean. I'm thinking that by lowering the rear and not the front this will induce more "rake" in the front end.



    Any thoughts?



    z
    Full custom 2008 TW200/250 build pics of my bike... I call her TW (short for "Twice Wicked" for her almost doubled HP Hidden Content )



    Hidden Content



    Newest member of the herd... 1987 Honda CBX250... this bike will become a board tracker this summer



    Hidden Content



    Bought another bike last fall (2012) ... 1982 Kawasaki KZ305 it's a "mostly done" bobber project I got for practically nothing



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  6. #5
    Senior Member lizrdbrth's Avatar
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    Rockin'.



    I partucularly like that you're taking it in your own direction.



    I can explain it to you, but I can't understand it for you.

    Powdercoated '87 frame, extended swingarm, YZ fork legs, ATV tire, 14/55, XT350 tank, spliced quick-release seat, disc brake conversion, beeg headlight, beeger rack, Lizrdcooler, Lizrdventz and bunch of other stuff all covered in invisible ink.

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  7. #6
    Senior Member zardoz's Avatar
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    lizrdbrth gave this answer and I'm gonna address them one by one the best I can



    "Your situarion is a bit unique. It might pay you to get your hands on a stock TW and ride it to get feel for whether what you consider "twitchiness" is normal, the result of nearly twice the horsepower or caused by mechanical issues.



    "Twitchy" being subjective, TW's are twitchy. A bit oversprung in the rear, and a 52 inch wheelbase is a 52 inch wheelbase. Add enough power to easily loft a front wheel and those alone could cause what you describe as "twitchiness". Just for comparison, the bike your motor came out of has 6 more inches of wheelbase. A hyperextended swingarm will put more weight on the front end.



    If the excess power is causing thr front end to lighten up lowering the rear may make things worse. Under power even more weight may be transfered rearward. Think "60's Gasser".



    But lowering the rear or lifting the front will definitely slow down the steering. Drnlling the swingarm shock pivot is a reversible mod. Just don't get carried away because a 3/4" difference does not equal 3/4" of lowering, but more on the order of 3".



    The other option is lifting the front. YZ80 fork tubes will allow a little over 2" more height.



    Proper fork oil level will help keep the forks from unloading as easily. Or at least more predictably. A few less teeth on the rear sprocket might dumb down the tendency, as well.



    If you mean "twitchy" at a given speed (like a high speed wobble) that indicates a mechanical issue.



    High speed wobble indicates loose or worn steering bearings or swingarm bushings, misaligned tires due to uneven snail adjusters or front ubes twisted in the triples, tire balance, wheel bearings, low or high fork oil, etc.



    Your bike has a fair amount more power. If it's worn swingarm bushings every time you twist on it your bike will tend to react more violently than a stocker, even at relatively low speeds. The swingarm will cock sideways under torque. When you back out of it or clutch to shift gears it will unload and cock the other way. Tail wagging the dog.





    Your bike has had a fair amount of frame modification. While it looks great and appears to have been done properly there's always the possibilty that the frame has a bit of misalignment. If you can't cure the twitchiness through handling adjustments I'd take a more critical look into that possibility. Even one degree from vertical on the steering head will give you issues you'll never sort out.



    Have you ever ridden a stock TW?"





    I'll do my best to answer here.



    #1 yes I think a longer swingarm will help a lot. I'm speaking with Trickstr about his extended swinger.



    #2 yes I think this is a direct result of added power, at speed it settles down somewhat.. under hard acceleration it gets a little squirrly



    #3 I will look into drilling a new lower shock mount hole, this is reversible easily.. I like that idea



    #4 I'm looking into another set of forks right now (does anyone know the length of inverted KX100 forks?)



    #5 ya know... I counted the teeth on my sprocket and I'll be damned if I can remember how many (raining now.. will check later)



    #6 the po/builder was meticulous with this build, ALL bearings and "wearable" items were replaced with new, as mentioned the problem shows up under hard power and settles down once you back off a little and aren't actively accelerating.



    #7 nope, I've never ridden a stock TW



    z
    Full custom 2008 TW200/250 build pics of my bike... I call her TW (short for "Twice Wicked" for her almost doubled HP Hidden Content )



    Hidden Content



    Newest member of the herd... 1987 Honda CBX250... this bike will become a board tracker this summer



    Hidden Content



    Bought another bike last fall (2012) ... 1982 Kawasaki KZ305 it's a "mostly done" bobber project I got for practically nothing



    Hidden Content

  8. #7
    Senior Member mrbracket's Avatar
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    That is one crazy TW, I like it!!



    You've got a friend in the Bracket Business! Hidden Content

    Get your TW200 Parts at ProCycle! Hidden Content

  9. #8
    Senior Member lizrdbrth's Avatar
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    Be careful choosing the USD forks. Those fatbobs may limit your options.



    I've never looked but a KX100 probably has better brakes



    I can explain it to you, but I can't understand it for you.

    Powdercoated '87 frame, extended swingarm, YZ fork legs, ATV tire, 14/55, XT350 tank, spliced quick-release seat, disc brake conversion, beeg headlight, beeger rack, Lizrdcooler, Lizrdventz and bunch of other stuff all covered in invisible ink.

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  10. #9
    Senior Member zardoz's Avatar
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    Quote Originally Posted by mrbracket View Post
    That is one crazy TW, I like it!!


    Thanks mrbracket



    Now wouldn't one of your moto-mules look awesome behind my bike



    z
    Full custom 2008 TW200/250 build pics of my bike... I call her TW (short for "Twice Wicked" for her almost doubled HP Hidden Content )



    Hidden Content



    Newest member of the herd... 1987 Honda CBX250... this bike will become a board tracker this summer



    Hidden Content



    Bought another bike last fall (2012) ... 1982 Kawasaki KZ305 it's a "mostly done" bobber project I got for practically nothing



    Hidden Content

  11. #10
    Senior Member zardoz's Avatar
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    Quote Originally Posted by lizrdbrth View Post
    Be careful choosing the USD forks. Those fatbobs may limit your options.



    I've never looked but a KX100 probably has better brakes


    Yes I agree 100% I'm not decided on the tank yet, I'd rather sort out the swinger and forks first then see how I like it before I decide on what direction to take with the tank. I'm not set on one look or another.. but I do like the harley tank.. although it is already showing that I'll have to re-do the fork stops as it sits.



    The inverted lx 100 forks apparently come with triples (top is a protaper) and (bottom is stock) and protaper fatbars . I'm not shy about pressing in/out a steering stem, I need to get into the stem head bearing chart and see how far apart they are in specs.



    z
    Full custom 2008 TW200/250 build pics of my bike... I call her TW (short for "Twice Wicked" for her almost doubled HP Hidden Content )



    Hidden Content



    Newest member of the herd... 1987 Honda CBX250... this bike will become a board tracker this summer



    Hidden Content



    Bought another bike last fall (2012) ... 1982 Kawasaki KZ305 it's a "mostly done" bobber project I got for practically nothing



    Hidden Content

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