ChinaV's new Yingang YG250NF (YG250-6)

Hi V,

correct the HiFlo Filter HF112 fits perfect. Its available on Taobao http://item.taobao.com/item.htm?id=8470335355
But quiete expensive there, I bought in Germany and it was less then 2EUR, I remember.

For the airbox - have a look at the Airbox of the X2, it looks quiete decent. I will take some pictures.
It's "copy", mean inspired by some KTM, so the filter can be replaced with decent european stuff, if needed.

Yes this engine has "pep", mine has pep also in lower revs, probably due to the gearing.
What sprockets are on the bike? I hardly get over 100km/h, I guess they are geared totally different.
I dont have a tachometer, so not sure what revs I run.

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Originally Posted by felix

Looks way better already! How about flipping those bars upside down to make the riding position even sportier?

I like the clocks. How accurate are they?

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I'm too old for low bars. :wheelchair: The height of the new ones is pretty good, wish they had a little more space before the bend, as the switches and levers barely fit.

The console/gauges are great. Easy to read, with no flutter, it's nice to have a gear indicator. Unfortunately the speedo is way out. I tested with GPS yesterday. 100km/h = GPS 84km/h ... High speed run at 145 km/h = GPS 128 km/h. She didn't have much left, and I don't think you will get much more than 130km/h out of her.

http://www.contactdi.com/Processed/1080853.jpg

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Originally Posted by td_ref

BTW, someone managed to replace stock carb with a larger 34mm one. With aftermarket air filter, engine breath better should unleash more power at high rev.

Mr. V, does “Serious pep” means lack of engine power (or torque?) in that rev range?

Cheers.
TD

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As Felix mentioned, serious pep means it is making good power. Thanks for sharing the info on the 34mm carb and air filter, I might look into those changes later. For now, I would like to find more low end power. The air cooled bikes I've had seemed to have much more torque.

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Originally Posted by andre555

Hi V,

correct the HiFlo Filter HF112 fits perfect. Its available on Taobao http://item.taobao.com/item.htm?id=8470335355
But quiete expensive there, I bought in Germany and it was less then 2EUR, I remember.

For the airbox - have a look at the Airbox of the X2, it looks quiete decent. I will take some pictures.
It's "copy", mean inspired by some KTM, so the filter can be replaced with decent european stuff, if needed.

Yes this engine has "pep", mine has pep also in lower revs, probably due to the gearing.
What sprockets are on the bike? I hardly get over 100km/h, I guess they are geared totally different.
I dont have a tachometer, so not sure what revs I run.

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Hi André, thanks for Taobao link… ¥66.00 :eekers:, is stupid expensive. Those filters should cost ¥15.00 at most. Think I will wait until my next trip to Hong Kong to get some.

http://www.contactdi.com/Processed/1080742.jpg

A couple MCM members from Shenzhen were hanging at my house for the last few days and we had some good rides. Still a lot of things I want to do with the bike, but too busy :riding:.

Cheers!
ChinaV

Bike Bandit sells filters for a NX250 engine, they sell everything for that engine in it 1989 version.

568439 (199555-001) $6.50

Quote:

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Originally Posted by andre555

Yes this engine has "pep", mine has pep also in lower revs, probably due to the gearing.
What sprockets are on the bike? I hardly get over 100km/h, I guess they are geared totally different.

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Sorry André, I missed your question.

520 Chain
13 Tooth Front Sprocket
44 Tooth Rear Sprocket.

Cheers!
ChinaV

So Lorne, you going to drop that rear cog back a bit and fly along faster? Or is it better to have the gearing set up like that in China?

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Originally Posted by jape

So Lorne, you going to drop that rear cog back a bit and fly along faster? Or is it better to have the gearing set up like that in China?

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Of corse there's chinese product (quality still a big ?) BUT familiar brands in West that made in Thailand can esaily bought in Hongkong (ChinaV's distance to HK is shorter than ur "next big town" trip:lol8: ).

I meant, is it better to stay with the original set up, riding in China on Chinese roads, set up as is with the lower speed torque rather than top speed, (especially as China V has faster bikes already lol).

But I know what you mean, if I had my life all over again, I probably would choose to live in China somewhere down that way! I love toys, spend my pension on them all the time instead of paying bills, catching up with not having things when younger (they didn't even exist then); just finally got an Mp3/4 player (Chinese) for $30 including speakers, and a little HD TV, 12volt for if I go camping (also Chinese) and a generator and all my cloths and just about everything I own is Chinese made and I love them! I have all sorts of things I don't need like GPS and knives and swords and walkie talkies and bluetooth headsets and so on, all made in or exported from HK or Shanghai. Thats not the only reason I would like to live there of course but the child in me responds to all that stuff. Sorry, off topic.

Quote:

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Originally Posted by jape

I meant, is it better to stay with the original set up, riding in China on Chinese roads, set up as is with the lower speed torque rather than top speed.

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Jape, the bike seems to be geared just fine as it is. It's only a commuter for me, so running over 120km/h will probably never happen. Given the complexity of sprocket hunting for Chinese bikes, I think I will leave it as is.

Cheers!
ChinaV

Decided to dig in and get rid of the smog pump (S.A.I. secondary air injection). Not really a performance mod, as all it does is inject air into the exhaust to burn off excess gasses, but it was part of the mess of hoses and holes in the shroud covering the air filter. The SAI valve unit is circled in red in the upper left hand corner, the vacuum operated fuel petcock is circled in green in the center, and the air intake shroud is circled in red in the lower right hand corner. Quite a mess of hoses, and the air box shroud is total shit.

http://www.contactdi.com/Processed/1080868.jpg

On the front of the engine, next to the exhaust pipe, you will find the intake point for the SAI.

http://www.contactdi.com/Processed/1080874.jpg

Fortunately I already have a block off plate, gasket and screws.

http://www.contactdi.com/Processed/1080882.jpg

Next I wanted to tidy up all the hoses and relocate the fuel filter.

http://www.contactdi.com/Processed/1080883.jpg

Don't forget to block off the suction point once you've removed the SAI. You can trim a small piece of fuel line and put a screw in it.

http://www.contactdi.com/Processed/1080892.jpg

Vroom, Vroom... go riding.

http://www.contactdi.com/Processed/1080686.jpg

http://www.contactdi.com/Processed/1080782.jpg

Bike is running better without the shroud surrounding the pod air filter. I see no need for jetting changes, maybe a couple percent improvement in power. I'm not a competent engine tuner, I would like opinions on replacing the pod filter with a smaller or larger K&N unit. Bottom end is where the bike suffers the most, but it's getting better :thumbsup:.

Cheers!
ChinaV

Seems you are getting to like it! I like the looks of it more and more, especially from the front, more retro. with that round headlamp and paired dials. If it had drop handlebars it could almost be a Norton or Triumph.

You don't think the air filter is now too exposed to dust and moisture and crap that near the back wheel? Is it open frame there or is there a cover below? If not I would put the shroud back (in winter at least), and maybe just drill the upward facing half into a colander for air flow!

As it is just for commuting, you won't change that front mudguard either then? I got a DVD with a bike magazine recently and watched it, trying out a new super expensive, highly desired Tenere or BMW or something large and fancy in the ADV bike line across Australia alongside a bunch of other bikes. First mud-hole it jammed to a halt, then got jammed up, cleared, towed a few times, then a couple of miles up the road when they got back on fast tarmac, what crap was left under the mudguard compacted and heated up and exploded the front tyre ending up in nasty outback trip to Hospital for the rider and it could have been much worse. So it isn't just a story. It is very bad and dangerous design for any bike going into mud with sticks, gravel and loose soil, ever.

Every time I see your bike and all those JH600's that Herr Pfaelzer didn't get his competent hands on now, I shudder. Just a thought :lol8:.

http://www.youtube.com/watch?v=DkNVhtOCcrE

You are such a fruitloop MJH! It would be great if the YINGYANG Faktory Kombine had these machines eh? So sophisticated, a precise dance but with raw fountains of sparks and red-hot metal. Thank you.

Time marches on and winter has finally graced us with her presence down here in Guangdong. Although we don't get snow, it's been a bit wet and cold (5-7ºC), but I'm still riding the Yingang to work each day. Couple pics before starting in on some new farkles.

http://www.contactdi.com/Processed/1080849.jpg

http://www.contactdi.com/Processed/1080817.jpg

Yesterday, I visited the motorcycle market in Guangzhou to see what kind of farkles I could find.

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Originally Posted by jape

If it had drop handlebars it could almost be a Norton or Triumph.

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Originally Posted by felix

How about flipping those bars upside down to make the riding position even sportier?

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I hear you guys, but I couldn't find a decent set of straight 7/8" bars at any of the shops. Everyone is selling the large diameter 1-1/8" stuff, and adding them would require adapters which act as risers. I also tried rotating the bars, but that causes the controls to smack the gas tank, not really something I want to do. So if you can't get what you want, you might as well change color. ¥30 later and I had some nice black handlebars.

Handguards look like ass on this style of bike, and me fingers be getting cold on my ride to work. ¥60 for some handwarmers that work great. I found some of those trick controls with the adjustable CNC levers. ¥280 ain't cheap, but that includes everything (perches, brake reservoir & master cylinder). Also found some little bar end mirrors ¥60, still undecided if I like the look, but they appear to work pretty good.

http://www.contactdi.com/Processed/1080896.jpg

http://www.contactdi.com/Processed/1080898.jpg

Thats all for the current farkle report...

Cheers!
ChinaV

ChinaV,
I have the same bar end mirrors on my Qlink XF200. They work very well for me.
http://i182.photobucket.com/albums/x...endmirror1.jpg
http://i182.photobucket.com/albums/x...kah/XF2001.jpg
Can I be picky and correct the master?
I believe that the green circled device in post #39 is a vacuum operated fuel petcock and not a fuel pump.

Good stuff ChinaV, those levers looks very nice. Does the adjustability help with your issues of the brake lever not biting soon enough?

Would like to see a pic of whole front end with the bar end mirrors. From the pic above they seem cool. Good thing you don't have to weave through tight traffic on your way to work, here in shanghai they would last about a day...

felix,
You might consider this type of bar end mirror that would tuck under the bars for your lane splitting.
http://i182.photobucket.com/albums/x...kah/M010_1.jpg
Only $15.00 USD off ebay shipped.

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Originally Posted by barnone

I have the same bar end mirrors on my Qlink XF200. They work very well for me.

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Yes, I'm surprised at how wide the field of view is and how little they vibrate.

Quote:

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Originally Posted by barnone

Can I be picky and correct the master? I believe that the green circled device in post #39 is a vacuum operated fuel petcock and not a fuel pump.

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:right

Isn't that what I wrote? :lol8: :thumbsup:

Thanks...owe you a beer.

Cheers!
ChinaV

Great new commute ChinaV, :thumbsup:
and a great report too. :thumbsup:

Quote:

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Originally Posted by barnone

felix,
You might consider this type of bar end mirror that would tuck under the bars for your lane splitting.
http://i182.photobucket.com/albums/x...kah/M010_1.jpg
Only $15.00 USD off ebay shipped.

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I agree to barnone - your mirrors wouldn't last long when filtering traffic in Hong Kong or trying to park the bike at one of those over-crowded motorcycle parking spaces. I tried some similar mirrors once, but couldn't get used to looking down into mirrors instead of straight ahead.

Finally a matter of space and taste... The bike looks great already with the regular mirrors to me.

AW.

Barnone, had never seen those before, pretty clever.

I'm not gonna get any though, i like the big handguards on my bike and not planning to remove them for some mirrors!

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Originally Posted by felix

...i like the big handguards on my bike and not planning to remove them for some mirrors!

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Felix, when was the last time you saw a motorbike in China with mirrors?? When in Rome...

cheers

Quote:

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Originally Posted by felix

Good stuff ChinaV, those levers looks very nice. Does the adjustability help with your issues of the brake lever not biting soon enough?.

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No, the brakes work good, but the feel at the lever sucks. So far I tried three different master cylinder/lever setups and completely flushed the system with good DOT4 fluid. Still need too much pull before they start to react. Not sure if it's the lines or the calipers.

Quote:

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Originally Posted by felix

Would like to see a pic of whole front end with the bar end mirrors. From the pic above they seem cool. Good thing you don't have to weave through tight traffic on your way to work, here in shanghai they would last about a day...

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Total width is only 95 cm, about the same as having luggage on the bike. Bike is 82 cm with stock bars and weights on the ends.

Pics...just for you Felix.

http://www.contactdi.com/Processed/1080915.jpg

http://www.contactdi.com/Processed/1080910.jpg

http://www.contactdi.com/Processed/1080903.jpg

Cheers!
ChinaV

Bike is looking prettier by the day. :thumbsup:

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No, the brakes work good, but the feel at the lever sucks. So far I tried three different master cylinder/lever setups and completely flushed the system with good DOT4 fluid. Still need too much pull before they start to react. Not sure if it's the lines or the calipers.

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Maybe better imported brake pads? Brake pads look similar to mine, I modified some jap pads to fit and they worked well. might improve power and modulation.

Cheers for the pics, that bike is just lovely. The bar end mirrors work for me!

Looking at your tyres, it seems your pussy stripes aren't any smaller than mine on the XTR. How long do you reckon before you reach the edge? How far can you go before the pedals scrape?

The bike looks really good with those bar end mirrors! Plus the clear turn signals, black levers and bars... starting to look pretty mean!

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How far can you go before the pedals scrape?

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From the front view of the bike, looks like you'll be scraping the side stand before you get the pegs to touch (plus you;ll still get a bit of deflection and compression from the tire, putting the side stand that much farther out there)

Attachment 2941

The pegs sit awfully high on the Yingang as well... I like it, feels like a good 'ol street bike should. The whole side stand assembly looks a little chunky and "out there"... maybe the next upgrade / tweek ChinaV?

http://www.contactdi.com/Processed/1080853.jpg


Very Similar gauges to the GN250 gauges.
http://i784.photobucket.com/albums/y...zuki/GN250.jpg

Hello. Pete here.
I'm a new member to this site but I've been viewing it a while.
For the past 18 months I have been riding a piece of crap, Chinese excuse for a motorbike and for the past 17 months I've been looking for good replacement.

I've finally decided to get a YG250-6 due to your review which I have read over and over. I will buy one in the next few months. It's a great looking bike (apart from the welding but my JD150-15 is nowhere near as good) and I'm already sold...

...I just want to ask, has the torque issue improved over time since your initial tweaks? You said that it suffered a lot down low.

Holy shit -- there's now an MCM quorum in Zibo!

Welcome to the forum, Pete. Have you connected yet with ZMC888? You've surely seen him screaming around town on his RR 250.

Stay sober (at least while riding)!

cheers

Howdy Pete,

Nice to see you here on the forum. Now that you've gone public with your moto status, we expect lots of details of your China adventures.

So far I've clocked about 1500 kilometers on the Yingang and the bike has performed well. I bought it as a commuter, and she does a great job of making my ride to work an enjoyable experience. The bike is a little on the small side, if you're over 180cm tall, it can be a tad cramped, which makes long distance touring a bit painful. The suspension is fine for twisty pavement, but suffers on the bad roads, she's not an adventure bike, but does well as a canyon carver.

The power issue seems to be a simple matter of carburetion. China doesn't have any companies making large bore carburetors, so everyone slaps the same PZ30 carb on almost all the bikes and sends them on their way. Since the whole industry is heading towards fuel injection, I doubt they're going to invest in producing new models of carburetors. If you want power out of the Yingang, you have to keep the RPM's above 5000, she's got plenty of juice up there. Given some time to tinker, I think there's plenty of gain to be made in the low end with jetting changes or swapping to a larger carb size.

If you have nice twisty roads with good pavement around, I think you will be very happy with the YG250-6. The Yamaha YBR250 is probably a bit nicer, but it's a lot more money.

Cheers!
ChinaV

Note to self...Honda NX-250 Specs (May also be the same as the Honda AX-1)

The Honda NX-250 came stock with a Keihin 32mm PD 6BA Carburetor

The transmission of the NX-250:
Primary reduction 2.7272 (60/22)
Final reduction 3.1538 (41/13)
Gear ratio: 1 = 2.8461 (37/13)
Gear ratio: 2 = 1.7777 (32/18)
Gear ratio: 3 = 1.3333 (28/21)
Gear ratio: 4 = 1.0416 (25/24)
Gear ratio: 5 = 0.8846 (23/26)
Gear ratio: 6 = 0.7857 (22/28)

Spark plug = NGK CR9EH-9

Intake Valve clearance = 0.23mm (0.009in)
Exhaust Valve clearance = 0.23mm (0.009in)
* Interesting to note that the inspection interval is at 1000 kilometers and then 36,000 kilometers.

Oil Capacity 1.3 Liters

I will see what the Yingang factory has to say about how their engine specs against the original Honda.

Cheers!
ChinaV

Honda NX250 = Honda AX1 just different markets as I understood...The Chinese Code for the engine is 170MM.

ADVRIDER has a NX250 owners group with heaps of information on that bike, engine and drivetrain.

Following are the specs of the Shineray X2 withs same/similar? engine (170MM):

Gear ratio:
Primary reduction 2.727 (same)
Final reduction 3.286
Gear ratio: 1 = 2.846
Gear ratio: 2 = 1.882
Gear ratio: 3 = 1.389
Gear ratio: 4 = 1.143
Gear ratio: 5 = 0.957
Gear ratio: 6 = 0.833

Spark Plug is identical, Oil Capacity is 1.4l

Intake Valve clearance = 0.15mm +/-0.03
Exhaust Valve clearance = 0.20mm +/-0.03

Installed Carb is a PZ30

Fuel Consumption 2.4L/100km --> nope!