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  1. Replies
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    Re: Dong Fang DF 250 RTB Bobber Information

    u can edit it to say nothing but as axa said , cant
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    Re: Dong Fang DF 250 RTB Bobber Information

    U will need to chop the battery box to accomidate the new batt termnals - I had same issue full voltage , but not enough amps to drive the starter

    got mine autozone
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    Re: Dong Fang DF 250 RTB Bobber Information

    so , sprocket washer size ?

    oh ya my rear brake switch also went out : \
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    Re: battery

    my sprocket started wobbling , or I noticed it , the day she called balling , not fixed or rode since

    votage regulator and turn signal relay from http://www.scooterparts4less.com/


    Found...
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    Re: battery

    did u miss me ? Im back , a girl friends man left her in middle of night I had to go "rescue her" , here 2 months later , my sprockets still wobbling , size washer ID ?
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    Re: Dong Fang DF 250 RTB Bobber Information

    man u seriously spamming bars thread , because I can . or claim, to be able to go 13-15 mph faster than u ?

    as for power to money , best buy would be a turbo , to add nuther 2-4hp , as...
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    Re: Dong Fang DF 250 RTB Bobber Information

    no no no ive already stated I geared for 80 but valve float around 75 (the greater the motor strain the easier to valve float) , with 5th havng near no pulling power at all , but will try get a vid...
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    Re: Dong Fang DF 250 RTB Bobber Information

    roadkill austn Is a lot of highways so im almost always on highway , when off highway indeed im in lower gears , never even touch 5th unless going over 60 mph , and hills cause me to down shift to...
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    Re: Anyone Know Of Dong Fang DF250RTB Bobber?

    70 in a 250cc isn't unheard of axa , u guys just havent geared high enough , just looked only c 1/2 my front sprocket , but looks like a 17 , but if I recall rear may be 33 not 35

    AND I ordered a...
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    Re: Anyone Know Of Dong Fang DF250RTB Bobber?

    hydrualic brake switch didn't fit :p

    need a threaded post about an inch longer
  11. Replies
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    Re: Dong Fang DF 250 RTB Bobber Information

    rear hydraulic brake switch failed on me since last check (2 weeks or so) : \

    ordered http://www.jpcycles.com/product/240-693#reviews will update fitment on delivery
  12. Replies
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    Re: Dong Fang DF 250 RTB Bobber Information

    so odd , at 60 , Im rich andfull throttle chokes the motor , but at 70-75 ,it doesntchoke out at all and goto full throttle without issue , that forward facining filter I bet
  13. Replies
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    Re: Dong Fang DF 250 RTB Bobber Information

    ouch Bowtie , and Axa your utter disbelief the bike can do 75 in near perfect conditions makes me smile , knowing it does and thinking I can get a little more , main a hair to big (I think) and acts...
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    Re: Dong Fang DF 250 RTB Bobber Information

    good to here your resolved roadkill , if ever heading to Austin shout out ill meet ya somewhere let ya see my moped in action
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    Re: Dong Fang DF 250 RTB Bobber Information

    1 more thing to concider , my butt is not even knee high off ground , with legs near straight out , thus about foot closer to the ground than u guys and thus less air resistance

    but im not...
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    Re: Dong Fang DF 250 RTB Bobber Information

    I agree axa a fat man buying this isn't gunna race the highways at 70 , I am 165 and its not usual to get perfect circumstances , but 60 attainable and sustainable , with bursts +15 depending on...
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    Re: Dong Fang DF 250 RTB Bobber Information

    even barnones 45 to 30 swap (right?) was/is only a 30% boost to stock

    mine has been faster than 60 , since 8 days after it arrived and I maxed front sprocket

    yes up an incline or stiff headwind...
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    Re: Dong Fang DF 250 RTB Bobber Information

    I didn't change chains , I drive a different model , with diff chain

    and I think y the higher attainable speed , is simply because no one else has DARED/or botherd to gear for 90, and accepted ...
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    Re: Dong Fang DF 250 RTB Bobber Information

    I didnr realize there was proof to smaller chain - better hp+torq , I thought it mearly the fact I was gearing 20% higher that any o u could was the issue :p
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    Re: Dong Fang DF 250 RTB Bobber Information

    and im not yanking chains , I wish someone wer near to verfy , what im able to get from her , simply by making it basically a 4 speed (to 65mph) then a overdrive gear (5th) that has very little power...
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    Re: Dong Fang DF 250 RTB Bobber Information

    no engine mods only added bigger mainjet and removed air inject

    maybe it is as simple as that , gearing for 90 , so your 4h gear will be AT LEAST as fast as 5th was stock

    let me break it down...
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    Re: Dong Fang DF 250 RTB Bobber Information

    I wish I knew , I geared for 90 , rear tire size + ratio to determin speed at 6000 rpm's

    I wish 1 single person was in Austin so we could go ride together

    and yes I have been tailed and...
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    Re: Dong Fang DF 250 RTB Bobber Information

    finally did my 1st real oil change , insteada drain stain and pour back in , yes cheap 10/40 car oil , still

    slightly tightened valves , and ran 65 all the way to work with a few 70-75 bursts from...
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    Re: Dong Fang DF 250 RTB Bobber Information

    its a 2 valve pushrod, everything it has is between 2500-5000 rpm , if u drag out more rpms great 4 u beating the soft springs I was givin , if u don't here your valves clicking away , either you...
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    Re: Dong Fang DF 250 RTB Bobber Information

    bowtie if engine spins , spray in carb cleaner , if it fires its your jets

    5 min to pull n clean


    in my news , built oversized fender brackets to accomidate larger front tire , making speedo...
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