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Re: Dong Fang DF 250 RTB Bobber Information
2axa
Somewhere in this forum, you can find explanation how engines are marked in China, plus here is some table I made few year ago, which shows displacements of CG clones you can find on the market (couple of those "strange" displacements are from "Lifan" catalog) and respectively, their bore and stroke.
Attachment 19513
Knowing those two things, nobody can tell you this or that engine is "probably 200 cc". You will instantly know what is in front of you.
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Re: Dong Fang DF 250 RTB Bobber Information
Hey everyone, So I am still having issues with getting my new turn signals to work on my 2012 DF-RTB-250-B. Not sure what the issue is. I bought these chrome ones off ebay. I have tried wiring them up in various ways and nothing. The turn signal indicator isnt blinking on the speedo either. I have checked the connections to everything and its good. But when I use the turn signal switch I just hear a click coming from this thing that is connected to my battery, have never seen one of these, not sure if it is part of the issue, any help would be awesome I am trying to get these to work to finally get my license, my old triumph chopper has no turn signals or horn which is a must if your taking license test ;)Attachment 19514
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
Zorge
2axa
Somewhere in this forum, you can find explanation how engines are marked in China, plus here is some table I made few year ago, which shows displacements of CG clones you can find on the market (couple of those "strange" displacements are from "Lifan" catalog) and respectively, their bore and stroke.
Attachment 19513
Knowing those two things, nobody can tell you this or that engine is "probably 200 cc". You will instantly know what is in front of you.
all I was saying was until recently, the seller didn't really know/care what he had, and as a result was actually selling them for a fair price...
but then since it seems he took the time to research and list, and subsequently raise the price...
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
heist222
Hey everyone, So I am still having issues with getting my new turn signals to work on my 2012 DF-RTB-250-B. Not sure what the issue is. I bought these chrome ones off ebay. I have tried wiring them up in various ways and nothing. The turn signal indicator isnt blinking on the speedo either. I have checked the connections to everything and its good. But when I use the turn signal switch I just hear a click coming from this thing that is connected to my battery, have never seen one of these, not sure if it is part of the issue, any help would be awesome I am trying to get these to work to finally get my license, my old triumph chopper has no turn signals or horn which is a must if your taking license test ;)
Attachment 19514
that thing is your turn signal relay/timer, not sure the correct name...
the click suggests it may well be working correctly but you need to test to be sure.
basically connect the input to ~12 volts and observe the output switching on/off in conjunction with the clicking sound...
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
heist222
Hey everyone, So I am still having issues with getting my new turn signals to work on my 2012 DF-RTB-250-B. Not sure what the issue is. I bought these chrome ones off ebay. I have tried wiring them up in various ways and nothing. The turn signal indicator isnt blinking on the speedo either. I have checked the connections to everything and its good. But when I use the turn signal switch I just hear a click coming from this thing that is connected to my battery, have never seen one of these, not sure if it is part of the issue, any help would be awesome I am trying to get these to work to finally get my license, my old triumph chopper has no turn signals or horn which is a must if your taking license test ;)
Attachment 19514
Are the replacement turn signal bulbs/lights LED ?
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
SR.MAILMAN
Are the replacement turn signal bulbs/lights LED ?
so what if?
the charge/discharge rate increases, not that all module impedances are the same but I've been using led with this very stock signal timer for years.
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Re: Dong Fang DF 250 RTB Bobber Information
Howdy gang, long time no post. My Dongfang DF250RTB has been sitting unused for nearly a year. Of course, the stale gas reeked havoc on the carb gumming it up.
The pilot jet was so clogged, that i could not pass a cleaning wire through. The float bowl needle was stuck so as to not allow fuel to enter.
So I jump on-line to find a rebuild kit, which I do for $12 plus $7 shipping. But before I pull the trigger, I searched "pz30 carburetor" on Amazon and found the whole carb for under $30 delivered (7-10 days). No-brainer decision to order a new carb.
The new carb has an elongated choke lever bracket so a remote choke cable can be used. You can leave it as-is (no cable/lever only) but it looks unsightly. So simply swap the short bracket for the long.
FYI, the stock pilot jet is a #42 and the main jet is a #125. You can order replacement jets at many locations including Honda dealers. The Keihin OEM part number for the pilot jet is: N424-21-42 (the last 3 digits being the size of the jet, #42 in this case). And the main jet is: 99101-393-125 (#125).
/Mike
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Re: Dong Fang DF 250 RTB Bobber Information
35 posts ago I listed where u can get a pz 30 WITH ACCELERATOR PUMP for 21.50$.
in the same post I listed a rebuild kit for like $3.50.
no brain(er) indeed...
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
axa
so what if?
the charge/discharge rate increases, not that all module impedances are the same but I've been using led with this very stock signal timer for years.
I would not know.. I pulled my turn signals off. They got in the way. I use hand signals, sometimes just a finger... Its a bobber .I don't need no stinkin turn signals.:icon10:
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
bowtiewagon
I would not know.. I pulled my turn signals off. They got in the way. I use hand signals, sometimes just a finger... Its a bobber .I don't need no stinkin turn signals.:icon10:
No state bike inspection in TX? I left Houston in 1974 and moved to FL. Luckily no state inspection in FL, not even auto.
On the Dragon (US 129 NC/TN).
Attachment 19595
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Re: Dong Fang DF 250 RTB Bobber Information
My DF exhaust was getting a bit rusty so some stell wool and high temp paint and she is ready to go again.
Attachment 19596Attachment 19597
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
barnone
No state bike inspection in TX? I left Houston in 1974 and moved to FL. Luckily no state inspection in FL, not even auto.
On the Dragon (US 129 NC/TN).
Attachment 19595
Awesome photo, this so much belongs to be the frontpage of some motorcycling magazine with a header like "back to basics" or "budget motorcycling" :)
How do you like the cT by the way?
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
barnone
No state bike inspection in TX? I left Houston in 1974 and moved to FL. Luckily no state inspection in FL, not even auto.
On the Dragon (US 129 NC/TN).
Attachment 19595
yes we have inspection, but turn signals not on the list. Headlights hi/low, tail/brake/ stopping distance horn. about it.
nice riding, would love to take that ride one day. keep the wheels on the ground. Enjoy.
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
moilami
Awesome photo, this so much belongs to be the frontpage of some motorcycling magazine with a header like "back to basics" or "budget motorcycling" :)
How do you like the cT by the way?
I really like my 2015 Ural cT but a sidecar is not for everyone. Many try them and don't like.
Me on the Dragon (US 129 NC/TN)
Attachment 19601
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Re: Dong Fang DF 250 RTB Bobber Information
Bought this bike in January! 2300$ from powersportsmax. Shipping took about a week to get to Illinois. It arrived pretty much in great shape other then the rear fender decal was peeling off but I just figured the stripe knew it was a gonner anyway! I've changed oil to 10w40 wet clutch motorcycle oil and replaced the weird spark plug with NGK! My carburetor came with a 98 main which I switchedAttachment 19602 out for a 107m. Not sure on pilot jet size because its not stamped so I haven't messed with it! I have put almost 500 miles on it over the summer! Maybe u guys can clear up my anxiety on a few things as this is my first true motorcycle! 1. Chain is damn tight still after 500 miles with no room for adjustment to give a c*** hair more slack! Maybe I'm just not patient enough to wait for it to stretch or should it have stretched a little after 500 miles? (2.) Rear wheel makes a clanking noise when rear wheel is spun by hand! Don't really notice any noise while riding or I just can't hear it over the exhaust! Could it just be the chain making noise while rotating around the sproket or should I look into wheel bearings? 3.) Gas cap is constantly leaking and does not screw in completely to make a tight seal!
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
slightwinner
Bought this bike in January! 2300$ from powersportsmax. Shipping took about a week to get to Illinois. It arrived pretty much in great shape other then the rear fender decal was peeling off but I just figured the stripe knew it was a gonner anyway! I've changed oil to 10w40 wet clutch motorcycle oil and replaced the weird spark plug with NGK! My carburetor came with a 98 main which I switched
Attachment 19602 out for a 107m. Not sure on pilot jet size because its not stamped so I haven't messed with it! I have put almost 500 miles on it over the summer! Maybe u guys can clear up my anxiety on a few things as this is my first true motorcycle! 1. Chain is damn tight still after 500 miles with no room for adjustment to give a c*** hair more slack! Maybe I'm just not patient enough to wait for it to stretch or should it have stretched a little after 500 miles? (2.) Rear wheel makes a clanking noise when rear wheel is spun by hand! Don't really notice any noise while riding or I just can't hear it over the exhaust! Could it just be the chain making noise while rotating around the sproket or should I look into wheel bearings? 3.) Gas cap is constantly leaking and does not screw in completely to make a tight seal!
Take a good look at the teeth while rotating the rear wheel as the chain rolls over it.I remember when I first had mine the chain was NOT seating on the teeth correctly. I was already going to change out the sprocket to another anyway, so I did. But as I sit here I cannot remember what size I went with. But if you check the pages in this long thread you will find many upgrades worthy of doing. One of which was also the chain itself. As well as the front sprocket. Remeber one thing that is really important when owning and maintaing this bike. You get what you pay for. I have over 25,000 miles on mine.But not without replacing many items.. easy stuff, typical of replacing, but for better quality. My first motor lasted over 20,000 miles before the Transmission blew up. Found a replacement not real happy with it but it does get me around.
Anyway. I also recommend a magnetic oil plug. Best thing for this bike as it breaks in. Better to collect the metal shavings than for them to gum up the innards.
Welcome to the show. I love my bike. I work on it alot, but it is by choice to maintain her. Have fun and ride safe.
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Re: Dong Fang DF 250 RTB Bobber Information
I found the chain shipped tight, not as much info on hardtail chain slack as there is on swing arm slack but there didn't seem to be any benefit to a tight chain. I'm happy with ¾" or so of play.
I actually still have the stock chain for better or probably worse, but I figured why not get at least a few thousand miles out of it.
I think a 30 tooth sprocket is a better upgrade off the bat.
and what you really need to loosen might be the valves as many find they come way way too tight even cold.
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Re: Dong Fang DF 250 RTB Bobber Information
I read some where that 30mm slack for the bobber.
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
slightwinner
Bought this bike in January! 2300$ from powersportsmax. Shipping took about a week to get to Illinois. It arrived pretty much in great shape other then the rear fender decal was peeling off but I just figured the stripe knew it was a gonner anyway! I've changed oil to 10w40 wet clutch motorcycle oil and replaced the weird spark plug with NGK! My carburetor came with a 98 main which I switched
Attachment 19602 out for a 107m. Not sure on pilot jet size because its not stamped so I haven't messed with it! I have put almost 500 miles on it over the summer! Maybe u guys can clear up my anxiety on a few things as this is my first true motorcycle! 1. Chain is damn tight still after 500 miles with no room for adjustment to give a c*** hair more slack! Maybe I'm just not patient enough to wait for it to stretch or should it have stretched a little after 500 miles? (2.) Rear wheel makes a clanking noise when rear wheel is spun by hand! Don't really notice any noise while riding or I just can't hear it over the exhaust! Could it just be the chain making noise while rotating around the sproket or should I look into wheel bearings? 3.) Gas cap is constantly leaking and does not screw in completely to make a tight seal!
Love that chromed cylinder head :)
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
moilami
Love that chromed cylinder head :)
Glad someone does! lol i hate the chrome! It doesnt flow with the army green paintjob. Im trying to find a way to get the chrome parts painted army green! Im also thinking maybe a ammo can for the electronics box! This bike would be sweet if it actually kept the army theme going all around the bike!
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Re: Dong Fang DF 250 RTB Bobber Information
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
bowtiewagon
You get what you pay for. I have over 25,000 miles on mine.But not without replacing many items.. easy stuff, typical of replacing, but for better quality. My first motor lasted over 20,000 miles before the Transmission blew up. Found a replacement not real happy with it but it does get me around.
Anyway. I also recommend a magnetic oil plug. Best thing for this bike as it breaks in. Better to collect the metal shavings than for them to gum up the innards.
Welcome to the show. I love my bike. I work on it alot, but it is by choice to maintain her. Have fun and ride safe.
and sometimes you don't get what you pay for...
I'm often perplexed you got 20k + before any real problems set in.
don't get me wrong I'm very glad for you, but I've had so many unrelated engine problems and just 3k miles that I'm genuinely surprised when I first heard you got that far...
dropped valve, bent rod, and all the damage that goes with at not 1000 miles, burnt valve (admittedly my fault) at 2500, and a blow by seize today.
each and everyone a top end rebuild required.
then there was the failed master cylinder that failed mid ride, and a myrad of other things,the bike has spent as much time out of commission as in.
I've genuinly enjoy working to improving things, it helps justify my basement machine shop, but I'm genuinely tired of it as well, things just gone wrong far too often for my liking...
and it's not like it's my daily driver, I have 5 other vehicles I drive a whole lot more often.
that said I love the piece of shit and looking forward to the day the engine is beyond my repair and have no choice but to investigate an upgrade
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
axa
and sometimes you don't get what you pay for...
I'm often perplexed you got 20k + before any real problems set in.
don't get me wrong I'm very glad for you, but I've had so many unrelated engine problems and just 3k miles that I'm genuinely surprised when I first heard you got that far...
dropped valve, bent rod, and all the damage that goes with at not 1000 miles, burnt valve (admittedly my fault) at 2500, and a blow by seize today.
each and everyone a top end rebuild required.
then there was the failed master cylinder that failed mid ride, and a myrad of other things,the bike has spent as much time out of commission as in.
I've genuinly enjoy working to improving things, it helps justify my basement machine shop, but I'm genuinely tired of it as well, things just gone wrong far too often for my liking...
and it's not like it's my daily driver, I have 5 other vehicles I drive a whole lot more often.
that said I love the piece of shit and looking forward to the day the engine is beyond my repair and have no choice but to investigate an upgrade
yeah I am amazed as well that I got 20k out of the first motor. I did not do anything out of the ordinary either. but still, this replacement motor has me on edge every time I ride.I hate this uneasy feeling about it. I am saving some cash up to hopefully get that balanced shaft motor. I am not sure if the original motor actually had a balanced shaft, but it seems to be a good idea. I am also looking at a shineray for way less. I may just go that route. Still wish there was a way to verify those two DF motors on ebay they are selling as parts. But wont take the chance on them if the seller doesnt want to.
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Re: Dong Fang DF 250 RTB Bobber Information
Great weather for riding here in the mountains of Western North Carolina and East Tennessee.
Stopped at the Cheoah Dam on the way to Deal's Gap and the Dragon.
Attachment 19654
Attachment 19653
Git 101 MPG today, probably a bit less as the odometer is a little optimistic.
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Re: Dong Fang DF 250 RTB Bobber Information
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
barnone
that place I purchased my new front shocks from, does not seem to come up anymore. Not sure why.
I noticed that this link as well. http://parts.powersportsbest.com/index.php/ doesnt seem to work either.
wonder what gives. Finally find a place that sells some parts and they disappear.
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Re: Dong Fang DF 250 RTB Bobber Information
I'm the new DF'er :goodtime:
Bowtiewagon, arent the parts for Tha Heist and the DF250 nearly identical?
I would'v thought they'd have suppliers you could purchase from somewhere "nearby "
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Re: Dong Fang DF 250 RTB Bobber Information
bow,
Wonder how a Honda Rebel engine would fit in a DF?
Here is one for sale.
http://www.ebay.com/itm/1986-honda-r...-/231316342083
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Re: Dong Fang DF 250 RTB Bobber Information
Im looking into fitting the water cooled version of our motor on the bike! I think it would be a better choice for a replacement and would allow for longer distance riding! Dont let anyone tool u around saying that honda is so much better quality! Ive had chinese motors outlast hondas. Remember about 20 years ago nobody in the U.S. would work on japanese bikes but now they work on them all day! What i have learned about chinese products is that some manufactures use strick quality control and others dont even know what that means! Once the demand is high enough just like the jap bikes then they start getting a little smarter about quality! So far this zongshen motor is right up there with honda quality!
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Re: Dong Fang DF 250 RTB Bobber Information
Quote:
Originally Posted by
barnone
I had considered that option as well, even a couple Kawi's were around to swap with. But looks like a bit of welding for mounts and then work fitting dual exhaust. Bike is great but not really worth that much trouble on the finacial side.