XGJAO 重庆新感觉摩托车有限公司

These are assembled in Vietnam under the Brand name "VISITORS" as a R125, R175, R250 Phoenix.

I really wonder about the engines in these?
The rated output represent that Vietnam has no emission regulations at all?
23HP for the 250 and 19 hp for the 175. Content is all in Vietnamese, I am reading the 175cc is a twin 4-Valve, water cooled too. (all twins have four valves)

http://thibanglaixeoto.com/wp-conten...oenix-R250.jpg

You can see the twin exhaust in the Bios 175 and yes it looks like a Lifeng engine.
http://s1.storage.2banh.vn/image/201...54b4575fd3.JPG

I would assume that both of these Vietnamese brands; REBEL USA and VISITOR are State Enterprises in Vietnam.
They look to be working cooperatively with Chinese suppliers; Loncin, XGJAO and Lifeng.

The Vietnamese ones are CKD's I do think possibly the 250 twin is only available in Vietnam then looking at the specs of the 250 in China very low power output.

one source is claiming 30.36BHP from the Liquid cooled 250 twin I know there is a lower rated oil cooled twin

The largest displacement of that engine is 320cc and when tuned to meet modern emission standards it only generates 24hp. That’s with it set up with a Delphi EFI.
That’s not to say that the engines could not be configured without regard to emissions. Also somebody contributed a bad translations into google, it translate power in kW into HP, HP does not translate to Kw it converts, so the claimed 23kw rating is likely mistranslated from what is hp. However it is not impossible to get 30hp out of a 250 twin but not if emissions are regulated, it could be tuned up but would not meet any modern standards for emissions, also if you add water cooling that really brings more potential. If we go back to Honda air cooled twins before 1976 you see their real potential.
The CB350 was really 325cc and offered up 36hp (27kW) water cooling that engine would not reduce emissions output but certainly would reduce overheating.
I am just theorizing, it is more likely that they simply are making exaggerated claims or the real numbers are getting lost in translation, the 250cc is likely getting 23hp and not restricted for emissions.

They claim 19kW for the 175cc twin, more likely 19hp and only if it is unrestricted for emissions.

I really think that somebody is just grossly overrating the specs.

Rebel USA is offering a 170 version of the engine they are claiming 13 bhp for it? Since none that take pen to paper seem to have any real consideration to accuracy, it's really difficult to reference anything as factual.

bhp is the braking hp apposed to what is coming off the crank, its read on a dyno off the rear wheel.

It depends most manufacturers rate the engine power not how much it puts down to the ground plus a lot of Dyno's for over estimate by a degree of error. The reason why manufacturers rate engine power off the crank is down to engine Dyno's in which they test the parameters of the engines and get values depending on tune that will be used on the road.

here is the companies website. http://www.visitor.com.vn/

The error is in translation as mã lực translates to horsepower not kilowatts.
23 hp for the 249cc twin.

That is their claim, which in itself is liberal as the engine in the NAC25 is rated at 20hp.

It looks like they intend to put the 350 (320cc) twin in both of the XGJAO frames.

The website is under construction, you may or may not get a glimpse of it or get redirected to http://www.motorock.vn/

it all a dogs dinner.

https://2brk.files.wordpress.com/201...sitor-bios.jpg
Engine: 2-cylinder, 4-stroke, air-cooled
Displacement: 174cc
Max Power: 10.8 KW / (8000 ± 5%) 14.7hp
Max Torque: 13.0 N.M / (7000 ± 5%)
Transmission Type: 2-step, 5 numbers (the hand)
Ignition Type: D.C.D.I (Digital CDI)
Front Suspension: springs, hydraulic shock absorbers
Rear Suspension: monoshock
Front Brake: Disc 1
Rear Brake: Disc 1
Weight: 146 kg
Top Speed​​:> 120km / h
Front Tire Size: 110/70-17
Rear Tire Size: 140/70-17

ahh good catch MJH never thought yo look at the Vietnamese words if it was in Chinese it would sound the same.

Quote:

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Originally Posted by Kennon

ahh good catch MJH never thought yo look at the Vietnamese words if it was in Chinese it would sound the same.

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The emission standards for motorbikes are at Euro 2 in Vietnam today, however they will raise the standards to Euro3 as of 2017. Since these are for sale in China with the 250 @ 20hp and the 320 @ 24hp those would be the outputs of the bikes in 2017. For now they could be a bit better tuned and that would explain the marginally better numbers.