Dong Fang DF 250 RTB Bobber Information

**GUN ROD** · 05-05-2012, 02:58 AM

Originally Posted by ben2go

As you ride and the chain goes through heat cycles and it will stretch.Keep and eye on the slack.IF it stretches to much,it will slip on the sprockets and damage them.

Bow, even though you discounted the chain, I've heard/felt it too. That's why I keep my chain at 1/2". goes away.

**alleykat** · 05-05-2012, 12:29 PM

Originally Posted by GUN ROD

Barnone was tuff love but wise, I miss him too.

35 with 108 & 45, performance change?

I don't have any "real world" numbers. I feel like it has changed. Like Barnone used to say, change one thing at a time and see.
I feel the #45 slow jet helped a lot. No more "popping" on decel and better idle.

**alleykat** · 05-05-2012, 12:35 PM

One thing I feel I should point out is hang on the you stock parts like the air pump and jets. If you guys live in cities that stick a "sniffer" up the tail pipe during state inspection, you may not pass. The small jets and air pump lets the bike pass the emission standards.

**alleykat** · 05-05-2012, 12:40 PM

Originally Posted by GonzoX

OK I finally got mine as well. Not the color I wanted but Im happy with it so far. Need to still get my training and lic. Got it from killermotorsports. Only took a month to get it. Here are some pics:

Attachment 7056

Gonzo, Good looking bike, I like the silver...

**alleykat** · 05-05-2012, 12:41 PM

Originally Posted by DanDaMan

I installed a variable (spring loaded) chain roller (rollerskate wheel) lets me have slack n no chain slap/growl(when it drags across frame)

Pictures please, lol

**alleykat** · 05-05-2012, 12:43 PM

Hey guys, in the spirt of Barnone's thread... Please post mod pictures and a working link to the parts you used...

**GUN ROD** · 05-05-2012, 12:46 PM

Originally Posted by alleykat

One thing I feel I should point out is hang on the you stock parts like the air pump and jets. If you guys live in cities that stick a "sniffer" up the tail pipe during state inspection, you may not pass. The small jets and air pump lets the bike pass the emission standards.

Good point, I've save the air unit, never thought about the jets. I'm sure their somewhere. Will find & bag together. Thanks.

Where did you buy the 45 jet?

**alleykat** · 05-05-2012, 12:56 PM

Originally Posted by bowtiewagon

On to another question for you all who have a few miles on thias bike.
The roads around here are harsh.. bumps every ten feet,and serious ones at that...there isn't a smoothe road around here at all.. but you get used to it.Here is the thing.When I hit a bump,in any gear,I am usually aware before i hit it so I throttle down,hit the bump then throttle up.When i am throttled down,and hit the bump I hear some very annoying rattle inside the motor..like the clutch plates(do not know what else to call them) are rattling over the bumps.. it is quite load,and very uneasy to hear. Is this a common sound.. or is there an adjustment I need to do to the inner guts of the transmission? again,,it sounds like it is from the internal of the trans..but while riding it is really hard to tell..so I ask the experienced riders.. have you ever heard this sound.
At first i though maybe my chain was lashing somthing,but I checked everything near and around it,nothing to hit...then i thought maby it is a loose something..but everything is tight.so i am just speculating that it is internal on the trans.

Thanks for the cable update...I have heard a couple of times, a sound like a "marble" bouncing around in the case. I was leaning towards the chain striking the lower part of the rear fender, which is fiberglass and would produce a different sound. Again, i've only heard it twice and keeping and eye on this issue.

**alleykat** · 05-05-2012, 12:58 PM

Originally Posted by GUN ROD

Good point, I've save the air unit, never thought about the jets. I'm sure their somewhere. Will find & bag together. Thanks.

Where did you buy the 45 jet?

http://www.mychinamoto.com/forums/sh...ll=1#post41593

**bowtiewagon** · 05-05-2012, 02:55 PM

Originally Posted by alleykat

Thanks for the cable update...I have heard a couple of times, a sound like a "marble" bouncing around in the case. I was leaning towards the chain striking the lower part of the rear fender, which is fiberglass and would produce a different sound. Again, i've only heard it twice and keeping and eye on this issue.

Yeah thats what it sounds like..a marble rattling around in the trans.. I will check the chain a little and maybe have to take out a bit of the slack in it. I think I may have a bit too much.. but as they say loose is better than tight..at least as far as chains go...maybe not for other uhum..things..