Results 4,111 to 4,120 of 6337
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#4111 Re: Dong Fang DF 250 RTB Bobber Information
08-01-2013, 08:57 PM
Nick, I don't know but you need to tell us what model you have.
2010 DF250RTB, 2012 DF250RTB_A, or 2012 DF250RTB_B, it might make a difference.
I'm guessing under the tank but that is just a guess.Vince
2021 Ural cT
2022 Dong Fang DF250RTG
2021 Ice Bear 150cc scooter
2020 Ice Bear 150cc Scooter
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#4112 Re: Dong Fang DF 250 RTB Bobber Information
- Join Date
- Jul 2013
- Location
- Nebraska
- Posts
- 37
08-01-2013, 09:08 PM
Thanks Barnone. It's a 2010 DF250RTB.
2010 DF250RTB
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#4113 Re: Dong Fang DF 250 RTB Bobber Information
08-01-2013, 09:52 PM
if my tach is accurate, slight downhill yesterday, i got just a hair below 60 indicated at just a hair below 7k, and it wouldn't do any better.
Please do tell how the 30 tooth works out.
I must say im going to be a bit tweaked if i have to dump $ on another sprocket.
Against my better judgment, i took the advise of the collective which claimed your weight should determine the size sprocket you can go with... which appear to be a load of crap.
The bike is rev limited like none other ive ever ridden.
I had a 50cc (49cc) 2 stroke way back when that had a normal operating rpm from 5k up to 13k if you pushed it, and would easily achieve 65 no problem cuz apparently it was geared correctly.
On this bike I will top out about 6.5k when it begins to spudder, then shifting at that point brings me no lower than 4k
there is just no range...
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#4114 Re: Dong Fang DF 250 RTB Bobber Information
- Join Date
- Aug 2011
- Location
- texas
- Posts
- 266
08-02-2013, 05:23 AM
I went thru about 5 sprockets , until I figured out the only way I could get speed that wasn't RPM valve float capped (engine sputter @ WOThrottle) was to go with the 17 35 , which is stretching gears from 3 to 2 , id need a diff rear rim to make it geared any lower , Maxed front and rear both at the moment
I stretched front 2 teeth 20% faster , and Rear 10 teeth 33% faster than stock
and when cold . down hill . the wind with me and drafting Im still RPM limited at about 82 indicated (about 73-75 mph)
but my valves are VERY loose , like I set my 38 HPower 1974 VW beetle's valves IMG_2189.jpg , if I tighten em down I may drag a bit more from her just pics 053.jpgLast edited by DanDaMan; 08-02-2013 at 05:53 AM.
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#4115 Re: Finally Registered My Dong Fang DF250RTB Bobber In Florida
- Join Date
- Aug 2011
- Location
- texas
- Posts
- 266
08-02-2013, 07:17 AM
/cough , 13/45 that's a snowplow gear that gets about 6 mph ..... and I run a 17 35 :p and think 1st is now "just" short enough (73% shorter) shorter = higher speed , of all vehicles u want 1 that 1st gear is perfect for how u drive is the 1 u get , bikes 1 the only things u can do it yourself with ratio's , do I want a 1/4 mile bike or a cruiser
cruiser tan idler , tan main
racer - tan to black idle , slightly lean very tan 3/4 throttle
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#4116 Re: Dong Fang DF 250 RTB Bobber Information
- Join Date
- Apr 2012
- Location
- Central Texas
- Posts
- 161
08-02-2013, 07:26 AM
I have replaced my horn after 6 months. Had it a year now. And yes it was the horn. Got a french made quality replacement that is adjustable for tone. Didnt want a big ass horn on there as im of the old scholld K.I.S.S. class.
Picture 2557.jpg
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#4117 Re: Dong Fang DF 250 RTB Bobber Information
- Join Date
- Apr 2012
- Location
- Central Texas
- Posts
- 161
08-02-2013, 07:32 AM
Well no offense Dan and maybe you are the exception. But here in TX the speed limit is 75mhp and most do 80+. And I live in the hill country so I have inclines to deal with. And every biker I talked to thinks I was crazzy to take a 250 on the hwy. IMHO they have a valid point.
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#4118 Re: Dong Fang DF 250 RTB
08-02-2013, 10:02 AM
45/13 = 3.46 DF stock
41/15 = 2.73 Heist stock
30/13 = 2.31
33/13 = 2.53 my previous 2010
35/13 = 2.69 my current 2012
38/13 = 2.92
I'm going to try 30/13.
I would like to cruise at 55 - 60 MPH on level pavement at 4000 or so RPM.
Don't mind down shifting to 4th to accelerate or go up a grade.
Vince
2021 Ural cT
2022 Dong Fang DF250RTG
2021 Ice Bear 150cc scooter
2020 Ice Bear 150cc Scooter
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#4119 Re: Dong Fang DF 250 RTB Bobber Information
08-02-2013, 04:23 PM
Trouble isn't the horn itself, it is that little bracket that hold it to the bike, right where yours is.See it moves back and forth so much that it eventually just breaks off. I am going for a set of horns and looking at the car horns like Dan said. Louder is better, and hopefully can mount them on a bracket that will not move and break off.
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#4120 Re: Dong Fang DF 250 RTB Bobber Information
- Join Date
- Jul 2013
- Location
- Wilmington, NC
- Posts
- 5
08-02-2013, 05:50 PM
Barnone was it easy getting your 2012 DF250 legal to ride in North Carolina? Just wondering cause I'm interested in getting the DF250RTB_A in a couple of months! I found a shop here in Wilmington, NC that can order it for me!
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