Dong Fang DF250RTG

[Barnone]

Originally Posted by Mister104

I have owned several Honda CG and CB bikes over the past 10 years and it’s not uncommon for the rear wheel alignment to need regular adjustments.

The DF250RTG is not a clone of the Honda CG or CB motorcycles. The engine is a Honda semi clone called the 165FMM.

Look at the photos I posted of the rear wheel and tell me how the wheel can become misaligned if properly adjusted and tightened?

Certainly the wheel could become misaligned if damaged in a crash or if the owner messed up the parts.

I have two other motorcycles (and many more in the past) with the same type rear wheel attachment and never have a problem with the wheel getting out of alignment.

EDIT. Do remember owning a CB125 back in 1974 but don't remember having rear wheel alignment problems.

[Barnone]

Originally Posted by JerryHawk250

It has a centrifugal filter just like the CG engine.

Did find a reference to clean the centrifugal oil filter on the CG125 every 7200 miles (12,000 km) so am not going to worry about it for a while.

[JerryHawk250]

Originally Posted by Barnone

Did find a reference to clean the centrifugal oil filter on the CG125 every 7200 miles (12,000 km) so am not going to worry about it for a while.

I remember checking mine on my Hawk around 2500 miles. It was pretty clean. At 7200 miles it shouldn't be too bad if you do regular oil changes which i think you probably do.

[franque]

I was just saying after the first 1k miles because with the reputation of Chinese machining, it's better to be safe than sorry. It's just cheap insurance.

[Barnone]

Originally Posted by franque

I was just saying after the first 1k miles because with the reputation of Chinese machining, it's better to be safe than sorry. It's just cheap insurance.

I have had very good luck with my Chinese bikes over the years with no engine problems. I keep magnetic drain plugs in all my bikes except the DF and get very little or no metal on them. Can't find a magnetic drain plug for the DF.

[franque]

The slinger will largely do the same thing, but removes particles centrifugally, even non-ferrous particles. I'm not saying Chinese stuff is always/usually bad, it's more that surface finish isn't as fine equivalent Japanese stuff, which leads to more particles; Honda wouldn't have included it in the original design if it wasn't needed. You could probably get a thread gauge on the drain plug and find one that will work, or else cut the threads to something that'll work.

[Geaux-T]

I started a DF250RTG Club group on Facebook if any of y'all like to join

[Barnone]

Originally Posted by franque

The slinger will largely do the same thing, but removes particles centrifugally, even non-ferrous particles. I'm not saying Chinese stuff is always/usually bad, it's more that surface finish isn't as fine equivalent Japanese stuff, which leads to more particles; Honda wouldn't have included it in the original design if it wasn't needed. You could probably get a thread gauge on the drain plug and find one that will work, or else cut the threads to something that'll work.

I am sure Honda copied the oil slinger from someone like BMW and others who who used them way before WWII.

Remember that was an idea used a long time ago before oil filters as we know them today.

I am very familiar with magnetic drain plugs as I have been using them for years in my tractors, trucks, autos,motorcycles,etc.

The problem with finding one for the DF's engine is that the only oil drain is the large fitting that cover the area of the filter screen. There is no other drain plug which is fine since you can drain the oil and clean the filter just by removing the one bolt. I might have found one on Ebay but am waiting for a reply from the seller. Have some other ideas but will wait on the Ebay seller.

Or something like this small enough to fit there underneath the spring.
https://www.amazon.com/Motion-Pro-Oi.../dp/B007GM1JKA

[franque]

Yes, the slinger is an old idea, though it's usually based in the crankshaft itself (and if I remember correctly, it only cleans what it whips up from the crankcase), while Honda's idea is a little different in that it driven by the crank, with the oil it receives pushed through by the pump. I can post up a picture of the oil circulation circuit from Honda if you're interested.

[JerryHawk250]

Originally Posted by Barnone

The problem with finding one for the DF's engine is that the only oil drain is the large fitting that cover the area of the filter screen. There is no other drain plug which is fine since you can drain the oil and clean the filter just by removing the one bolt. I might have found one on Ebay but am waiting for a reply from the seller. Have some other ideas but will wait on the Ebay seller.

Yeah, i discovered the same thing on my first oil change. I was crawling all around the bike looking for the drain plug. lol

[Geaux-T]

Has anyone ordered their bike from Redbox Powersports? If so how long did it take to get your bill of sale. I still haven't got mine and it seems impossible to contact anyone over there.

[JerryHawk250]

Originally Posted by Geaux-T

Has anyone ordered their bike from Redbox Powersports? If so how long did it take to get your bill of sale. I still haven't got mine and it seems impossible to contact anyone over there.

I've read some bad review on them. Hope you don't have any issues getting it.

[KyzoSoupz]

Hey guys guess what, I found a 6 speed gear set near for the Chinese version of the cb250. Idk if it will work, I hope it does fit the cb250 Chinese engine.

https://m.alibaba.com/product/608059..._140x140xz.jpg

[franque]

There's a chance it'll work, but you'll have to get rid of the kickstarter at the very least, if it will work. I'm fairly certain no one has taken the chance on a 6-speed gear set on this forum, but swapping a transmission is a complicated affair, since you're relatively new to wrenching, I'd get an extra motor before attempting this, so you don't turn your bike into an expensive paperweight. You'd also need a new shift drum, shifter star, and shift forks, along with everything to split the cases, too.

[Barnone]

Originally Posted by franque

There's a chance it'll work, but you'll have to get rid of the kickstarter at the very least, if it will work. I'm fairly certain no one has taken the chance on a 6-speed gear set on this forum, but swapping a transmission is a complicated affair, since you're relatively new to wrenching, I'd get an extra motor before attempting this, so you don't turn your bike into an expensive paperweight. You'd also need a new shift drum, shifter star, and shift forks, along with everything to split the cases, too.

What kickstarter? I do agree that adding a sixth gear would be a waste of time trying to solve a problem that doesn't exist.