New Zongshen RX3 (ZS250GY-3) Dual Sport

[SpudRider]

Add Turkey to the list of countries selling the Zongshen RX3. The bike is being rebadged the Mondial RX3i Evo in Turkey.

http://mondialmotor.com.tr/model/enduro/rx3i-evo

[katflap]

Nice find spud,

I notice in one of the smaller images under the main bike pic.

It shows the throttle body upside down

[SpudRider]

Originally Posted by katflap

Nice find spud,

I notice in one of the smaller images under the main bike pic.

It shows the throttle body upside down

That is how the throttle body is mounted on my U.S. bike, Kat.

[detours]

Originally Posted by SpudRider

Detours,

Thanks for posting your impressions, and welcome to The Cult of The Zong.

Thanks, glad to be here! I've wanted to join ever since I found out about this bike.

[katflap]

Originally Posted by SpudRider

That is how the throttle body is mounted on my U.S. bike, Kat.

Thanks for letting me know spud

This had me head scratching for a while but I think I have got to the bottom of it.

It seems the early Honley RX3 had the throttle body like this.



You can see the cast lug on the throttle body located in the cut out slot of the rubber manifold bit. (arrowed).

At some point they must of decided it was better the other way up.

Out with the spanners I go to turn it around.

Unfortunately my throttle cable wasn't long enough to reach

Fortunately I had ordered a spare from Taobao which was longer

Harmony restored

[Weldangrind]

Aside from the cast lug, I presume there is no upside-down for a dry-flow throttle body. It's only moving air.

[SpudRider]

Originally Posted by katflap

Thanks for letting me know spud ...

Harmony restored

[SpudRider]

I weigh over 200 pounds, and I ride at elevations of 4,400 to 10,400 feet above sea level. Yesterday I replaced my 14T C/S sprocket with a 13T C/S sprocket, and I like the lower gearing very much. The engine is far less likely to stall while starting out in first gear, and the engine holds its power better going up long inclines above 5,000 feet of elevation. I like the response of the engine better in all gears, and at all rpms. If you are a heavier rider, or you ride at elevations over 5,000 feet, I suggest you might like the 13T C/S sprocket better than the stock, 14T C/S sprocket.

[detours]

Registered my bike this morning and got several compliments on the bike in the parking lot. No one could believe when I told them I got the early bird price of $2895. And they all said it was cheap at $3495. I told everyone to check out CSC online.

[SpudRider]

Good for you. I also get many compliments regarding my RX3.

[MattyBoy1976]

Originally Posted by SpudRider

I weigh over 200 pounds, and I ride at elevations of 4,400 to 10,400 feet above sea level. Yesterday I replaced my 14T C/S sprocket with a 13T C/S sprocket, and I like the lower gearing very much. The engine is far less likely to stall while starting out in first gear, and the engine holds its power better going up long inclines above 5,000 feet of elevation. I like the response of the engine better in all gears, and at all rpms. If you are a heavier rider, or you ride at elevations over 5,000 feet, I suggest you might like the 13T C/S sprocket better than the stock, 14T C/S sprocket.

Hey Spud (and anyone else who might offer advice), forgive a rookie question, but does lowering the gearing affect the top end and cruising speed? I ask because I just added a slightly smaller rear sprocket to my TW200 in order to lower my RPMs at highway speed, and get a little less buzzing. It worked (mostly-I may get an even smaller sprocket). When I get my RX3, I too will be riding a pretty large range of elevations (5400-12,000 feet, likely), but I have to do some highway riding to get to the good stuff.

[Jay In Milpitas]

Matty, short answer is "Yes."

Dropping the front sprocket one tooth will cause the engine to rev higher at the same speed for the stock 14 tooth.

In other words, since the engine can easily pull redline with stock gearing, the lower gearing will allow it to reach peak rpm quicker although mph will be lower.

It's a compromise you will have to decide on.

Jay.

[SpudRider]

Originally Posted by MattyBoy1976

Hey Spud (and anyone else who might offer advice), forgive a rookie question, but does lowering the gearing affect the top end and cruising speed? I ask because I just added a slightly smaller rear sprocket to my TW200 in order to lower my RPMs at highway speed, and get a little less buzzing. It worked (mostly-I may get an even smaller sprocket). When I get my RX3, I too will be riding a pretty large range of elevations (5400-12,000 feet, likely), but I have to do some highway riding to get to the good stuff.

Originally Posted by Jay In Milpitas

Matty, short answer is "Yes."

Dropping the front sprocket one tooth will cause the engine to rev higher at the same speed for the stock 14 tooth.

In other words, since the engine can easily pull redline with stock gearing, the lower gearing will allow it to reach peak rpm quicker although mph will be lower.

It's a compromise you will have to decide on.

Jay.

In theory, Jay's short answer is correct. However, in this instance, I can actually go faster with the smaller, 13T C/S sprocket. This might not hold true for riders weighing 150 pounds, and living in Florida, Indiana, Illinois, et cetera. However, riding at high elevations, the smaller, 13T sprocket holds its speed much better while climbing long inclines above 5,000 feet in elevation. Therefore, I don't have shift as much, and I actually end up going faster.

Also, the bike doesn't want to stall while pulling away from stop lights in first gear. The bike accelerates better, and preforms better in all gears at all rpms. In my instance I can't find a single downside for switching to the smaller, 13T C/S sprocket. If you weight little, travel light, and live in the flatlands at sea level, you might want to keep the stock, 14T C/S sprocket. However, if you weigh more than 200 pounds, carry stuff in the luggage, carry a passenger, and/or regularly ride about 5,000 feet in elevation, I highly recommend the smaller, 13T C/S sprocket. Once you make the change, you will never want to go back.

[SpudRider]

I bought my 13T C/S sprocket at Taobao while I was placing an order for other items. I called CSC today, and talked to Ryan. CSC only has the 14T C/S sprocket in stock at this time. I strongly encouraged them to also acquire the 13T C/S sprocket.

[katflap]

Originally Posted by Weldangrind

Aside from the cast lug, I presume there is no upside-down for a dry-flow throttle body. It's only moving air.

Yeah, it shouldn't really make any difference.

I just wonder why Zongshen bothered especially as this required fitting a longer throttle cable.