Dong Fang DF 250 RTB Bobber Information

[AKAsam]

I got it new, right out of the create. I changed the jet just to see of it would make a little difference. I took it back out and the sprocket started rubbing again. I took it back in a realized that the sprocket was backwards also but then i notice that it looks like there is supposed to be some kind of clip that hold the sprocket to the rim and i do not seem to have it. Barnone can you check and see if your has a clip?

[barnone]

There is a very big c-clip that holds the sprocket on which the mechanic that changed your sprocket must have left off. You should be able to see the groove that the c-clip fits in when the wheel is off. That clip is a bitch to remove and replace without large c-clip pliers. Harbor Freight has an inexpensive set that will make the job easier.

Very dangerous to ride the bike with out the c-clip because the chain or sprocket could jam causing a rear wheel lockup.

Maybe you can go to his shop and find it?

Weird about you DF coming with a 105 main jet. TIC (this is China) at it's best.

[reporon]

when I changed out my sprocket there was only one large washer & one large c-clip

[barnone]

My DF came with a 88 main jet while AKAsam's had a 105.
Can any other DFers report on their stock main jet size?

Might be wise to check your stock size before ordering new jets.

Just a reminder that when you put the float bowl back on make sure the accelerator pump is set so that it still works.

[reporon]

if I remember my main jet was a 100

[Babyswiss]

Barnone:

I saw you mentioned a chain breaker. Can't you get the rear tire and sprocket off the bike without seperating the chain?

[AKAsam]

When you drop a sprocket 10t like I did the chain will be way to long

[Babyswiss]

What is the final decision on the rear sprocket? 33,35, or 38 tooth? I weigh about 240 lbs.

[barnone]

Barnone:

I saw you mentioned a chain breaker. Can't you get the rear tire and sprocket off the bike without seperating the chain?

AKAsam answered the question. The chain breaker is for shorting the chain.

There is a master link in the chain so it is easy to remove for cleaning/oiling.

[barnone]

What is the final decision on the rear sprocket? 33,35, or 38 tooth? I weigh about 240 lbs.

I tried a 33 but it was too tall and then I went for a 38 for here in the mountains but I think the 35 is probably a good choice.