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-   -   New Zongshen RX3 (ZS250GY-3) Dual Sport (http://www.chinariders.net/showthread.php?t=13440)

SpudRider 09-30-2014 12:52 AM

Quote:

Originally Posted by Weldangrind (Post 173424)
Thanks. Those are nice looking, but I'm hoping for the rubber inserts.

Really? Okay. ;) Here are links to the pegs.

http://item.taobao.com/item.htm?spm=...48&ns=1#detail

http://item.taobao.com/item.htm?spm=...10&ns=1#detail

http://item.taobao.com/item.htm?spm=...31&ns=1#detail

I couldn't find the rubber inserts. :shrug:

SpudRider 09-30-2014 12:57 AM

Quote:

Originally Posted by Weldangrind (Post 173425)
That is a decent tread. I'm looking forward to your impressions, once you ride it.

For a street tire, it does have a decent tread. In fact, the tread on this tire is much nicer than the tread on any tire its size available in North America. :) It's too bad it must be imported from China. :hmm:

Weldangrind 09-30-2014 01:19 AM

If CSC doesn't import a tire that suits you, maybe you should import a small container. You'd certainly sell them.

SpudRider 09-30-2014 01:47 AM

Quote:

Originally Posted by Weldangrind (Post 173445)
If CSC doesn't import a tire that suits you, maybe you should import a small container. You'd certainly sell them.

I'd rather lace a larger hub to the rear wheel. ;) I'm starting to think the Russians were correct; a 17-inch rim is the answer. :) I'm hoping I can keep the upgraded, rear cush hub, and still get a rear sprocket large enough to keep the correct, final drive ratio to the rear wheel. There are many wonderful choices for good, 17-inch knobby tires. :tup:

Even the stock, 15-inch, CST C6017 tire greatly outshines the best alternative, 15-inch tires available in North America. :ohno:

http://www.csttires.com/int/wp-conte...73-285x592.png

Weldangrind 09-30-2014 02:03 AM

I'm sure that we'll sort out the sprocket options, even if that means a custom sprocket.

That said, many riders would rather just buy a decent tire than modify the wheel.

Wolftrax 09-30-2014 07:06 AM

Why can't you change the countershaft sprocket to compensate for the rim change?

SpudRider 09-30-2014 08:12 AM

Quote:

Originally Posted by Wolftrax (Post 173467)
Why can't you change the countershaft sprocket to compensate for the rim change?

That's a good question. ;) I might be wrong, but I believe the RX3 is equipped from the factory with a 13T, counter shaft sprocket. If so, this is the smallest C/S sprocket available. If you wish to change the sprocket ratio for a larger rear wheel, you have two options. You can either install a smaller C/S sprocket, or a larger rear sprocket. If a smaller C/S sprocket isn't available, your only option is to install a larger rear sprocket.

SpudRider 09-30-2014 08:13 AM

Quote:

Originally Posted by Weldangrind (Post 173454)
I'm sure that we'll sort out the sprocket options, even if that means a custom sprocket.

That said, many riders would rather just buy a decent tire than modify the wheel.

I agree on both points. ;)

SpudRider 09-30-2014 08:42 AM

Quote:

Originally Posted by Wolftrax (Post 173467)
Why can't you change the countershaft sprocket to compensate for the rim change?

The 17-inch rear wheel on the Minsk TRX 300i must have a suitable, larger rear sprocket. Therefore, the optional, 17-inch rear wheel offered by CSC will undoubtedly do likewise. The Russian rear wheel doesn't utilize the upgraded cush hub, but it probably isn't necessary.

If larger rear sprockets are not available for the cush hub, we will have two, acceptable choices. Stick with the cush hub, and a 15-inch rear wheel, or switch to a larger rear wheel sans cush hub. ;)

SpudRider 09-30-2014 09:26 AM

Quote:

Originally Posted by Weldangrind (Post 172444)
If that's the case, then the 17" wheels are surely available directly from China, which certainly takes work out of the equation.

It appears you are correct once again, Mr. Weldangrind. ;) Here's a link to the original wheel at Taobao.

http://item.taobao.com/item.htm?spm=...id=38663884322

I could be wrong, but that looks like a 17-inch rim to me. :tup:

katoranger 09-30-2014 09:36 AM

When is the boat suppose to arrive with these?

SpudRider 09-30-2014 09:45 AM

Here is a nice review of the Minsk TRX 300i. :tup:

http://www.abw.by/news/155795/

This photograph gives a closer view of the 17-inch rear wheel, and the nice aggressive tire. :)

http://www.abw.by/temp/news_photo/11112013/0736.jpg

SpudRider 09-30-2014 09:47 AM

Quote:

Originally Posted by katoranger (Post 173485)
When is the boat suppose to arrive with these?

Tentatively, the bikes are supposed to arrive early next year, perhaps in January. The arrival date is primarily dependent upon final EPA approval of the bikes. ;)

katoranger 09-30-2014 09:54 AM

So we have lots of time to do virtual builds.

SpudRider 09-30-2014 09:57 AM

Quote:

Originally Posted by katoranger (Post 173490)
So we have lots of time to do virtual builds.

Yes, we do. ;)

katoranger 09-30-2014 10:06 AM

Maybe CSC will remove a rear wheel and take some measurements.

SpudRider 09-30-2014 10:09 AM

Here are some nice photos from the Minsk TRX 300i review. :)

http://www.abw.by/temp/news_photo/11112013/0586.jpg

http://www.abw.by/temp/news_photo/11112013/0997.jpg

If you are going to ride in any mud, you definitely want a front tire with an aggressive tread. ;)

http://www.abw.by/temp/news_photo/11112013/0529.jpg

http://www.abw.by/temp/news_photo/11112013/0513.jpg

SpudRider 09-30-2014 10:11 AM

Quote:

Originally Posted by katoranger (Post 173496)
Maybe CSC will remove a rear wheel and take some measurements.

I hope they do; that would be very nice. :)

Weldangrind 09-30-2014 11:12 AM

Quote:

Originally Posted by katoranger (Post 173485)
When is the boat suppose to arrive with these?

I was wondering the same thing. I wonder how much excitement will be generated by then.

I'm excited vicariously. I know that if this bike hits Canada, it'll be ridiculously priced.

Weldangrind 09-30-2014 11:14 AM

Quote:

Originally Posted by SpudRider (Post 173469)
That's a good question. ;) I might be wrong, but I believe the RX3 is equipped from the factory with a 13T, counter shaft sprocket. If so, this is the smallest C/S sprocket available.

Once we get our hands on one of the CS sprockets, we'll likely be able to source a 12 tooth. It's not wise to go any less than 12, because the chain must follow a radius that's very small.

Weldangrind 09-30-2014 11:15 AM

Quote:

Originally Posted by SpudRider (Post 173473)
The 17-inch rear wheel on the Minsk TRX 300i must have a suitable, larger rear sprocket. Therefore, the optional, 17-inch rear wheel offered by CSC will undoubtedly do likewise. The Russian rear wheel doesn't utilize the upgraded cush hub, but it probably isn't necessary.

If larger rear sprockets are not available for the cush hub, we will have two, acceptable choices. Stick with the cush hub, and a 15-inch rear wheel, or switch to a larger rear wheel sans cush hub. ;)

I like your line of thinking I read in another post. Your BRP could benefit from a cush drive, but it's not needed at this power level.

Weldangrind 09-30-2014 11:17 AM

Quote:

Originally Posted by katoranger (Post 173496)
Maybe CSC will remove a rear wheel and take some measurements.

That's not the feeling I get so far. I suspect they'll measure spare parts for us, though.

Weldangrind 09-30-2014 11:19 AM

Quote:

Originally Posted by SpudRider (Post 173497)
Here are some nice photos from the Minsk TRX 300i review. :)

http://www.abw.by/temp/news_photo/11112013/0997.jpg


His jacket matches the bike! :D

Wolftrax 09-30-2014 04:07 PM

Quote:

Originally Posted by Weldangrind (Post 173514)
Once we get our hands on one of the CS sprockets, we'll likely be able to source a 12 tooth. It's not wise to go any less than 12, because the chain must follow a radius that's very small.

Yeah you're absolutely right about that. I think 13 is about as small as I would go. Damn it comes stock with a 13t, Master Spud is definately on the right track with the rear sprocket.

SpudRider 10-01-2014 02:06 AM

As I suspected, the NC250 engine in the Zongshen RX3 is not a copy of an existing engine. According to Minsk, this engine is an original design by an Italian company which also designs engines for Beta motorcycles.

http://forum.onliner.by/viewtopic.ph...37264&start=60

SpudRider 10-01-2014 02:22 AM

Here is a photograph which details the digital dashboard of the RX3.

http://mototek.com.ua/components/com...Y-3_RX-3_1.JPG

The digital dashboard utilizes a Siemens microprocessor which can be set for either U.S., or metric measurements. It has a fuel gauge on the left, and an engine coolant gauge on the right. It also includes a trip odometer, clock, gear indicator, and digital speedometer.

The top of the dashboard features an analog tachometer.

http://content.onliner.by/forum/1bd/...7df2a6bdd5.jpg

G19Tony 10-01-2014 02:26 AM

Quote:

Originally Posted by SpudRider (Post 173591)
Here is a photograph which details the digital dashboard on the RX3.

http://mototek.com.ua/components/com...Y-3_RX-3_1.JPG

The digital dashboard utilizes a Siemens microprocessor which can be set for either U.S., or metric measurements. It has a fuel gauge on the left, and an engine coolant gauge on the right. It also includes a trip odometer, clock, gear indicator, and digital speedometer.

The top of the dashboard features an analog tachometer.

The more I'm learning about this bike, the more I like it. :)

SpudRider 10-01-2014 02:33 AM

I agree; the more I learn, the better I like this motorcycle. :) I believe Zongshen has established itself as a formidable manufacturer with the arrival of the RX3.

SpudRider 10-01-2014 02:38 AM

Quote:

Originally Posted by Wolftrax (Post 173541)
Yeah you're absolutely right about that. I think 13 is about as small as I would go. Damn it comes stock with a 13t, Master Spud is definately on the right track with the rear sprocket.

After the bike is delivered, I am confident we will quickly get the gearing, and the rear wheel figured out. :) I am also considering a 21-inch, front wheel for this bike. ;)

SpudRider 10-01-2014 03:16 AM

The Italians created a very nice design for the Zongshen NC250 engine. :)

The camshaft is supported by two ball bearings.

http://attachments.motorfans.com.cn/...8p8yt19260.jpg

http://item.taobao.com/item.htm?spm=...71&ns=1#detail

The valve lash is adjusted by screw tappets on the roller rocker arms. The tappets are easily accessible by means of two, large ports in the cylinder head cover. :tup:

http://attachments.motorfans.com.cn/...gLhpKQ7301.jpg

http://attachments.motorfans.com.cn/...J3r2kL2580.jpg

http://gd4.alicdn.com/imgextra/i4/68...!685373388.jpg

The spark plug is easily accessible from the right side of the bike, so you don't need to remove the fuel tank to inspect, or change the spark plug. This is a very convenient feature if you are having ignition problems during a trip. :tup:

http://attachments.motorfans.com.cn/...CNtqkd1252.jpg

http://remcakram.files.wordpress.com...800d.jpg?w=630

SpudRider 10-01-2014 05:57 AM

I found some fork and shock absorber specifications in the following thread. :)

http://forum.onliner.by/viewtopic.ph...7264&start=240

Fork Diameter: 37mm
Fork Length: 795mm
Fork Stroke: 200mm

The fork diameter and fork length seem accurate to me. If the fork stroke is also accurate, fork travel is 7.9 inches, which is excellent for Chinese forks. :tup: Standard, 37mm Chinese forks have a travel of 6.5 inches. ;)

https://public.blu.livefilestore.com...iOS.jpg?psid=1

Shock Absorber:
Length: 390mm
Stroke: 60mm

These are very nice specifications for the shock absorber. The RX3 shock has a progressive, lower shock linkage, spring preload and rebound damping. :tup:

https://public.by3301.livefilestore....iOS.jpg?psid=1

https://public.by3301.livefilestore....iOS.jpg?psid=1

Minsk TRX 300i reviews state the bike has a very good suspension. I was very pleased to discover these specifications for the suspension; I hope they are accurate. :)

Wolftrax 10-01-2014 06:15 AM

Quote:

Originally Posted by SpudRider (Post 173597)
After the bike is delivered, I am confident we will quickly get the gearing, and the rear wheel figured out. :) I am also considering a 21-inch, front wheel for this bike. ;)

'
I'm with you on this. I think an 18" rear nd 21" front would be perfect for those of us that may stray off the pavement. More ground clearence and a big hoop up front to roll over obstacles. I ran a 21" up front on my Tenere and it made a huge difference in the soft stuff. Should keep the bike geometry pretty close to stock as well.:clap:

Wolftrax 10-01-2014 08:32 AM

We may be seeing the RX-3 sooner tha later. Copied from the CSC front page:


When the bike completes the US certification process (expected to occur within the next several weeks), we’ll call you and ask for a $500 deposit. You pay the balance when the bike is delivered.

rtking 10-01-2014 09:38 AM

Wolftrax - thanks for posting the update. I'm anxious to take delivery. Heck, I've even put away funds for the $500 deposit! :tup:

Spud - I may have missed this in another thread, but were you able to find oil capacity? And I wonder what weight is recommended? I understand that there are two oil pumps in this engine… one for the cylinder and to spray the piston, and the other for the transmission (so the trans won't have to rely on oil splash for lubrication.)

Thanks for the great photos of the top end. It really does look like servicing this bike will be straight forward and without having to remove much (if any) tupperware. If I read correctly, the only plastic that might need to come off is on the left side to service the air filter or reach the battery, but otherwise it's almost all accessible.

Weldangrind 10-01-2014 10:47 AM

Quote:

Originally Posted by SpudRider (Post 173589)
As I suspected, the NC250 engine in the Zongshen RX3 is not a copy of an existing engine. According to Minsk, this engine is an original design by an Italian company which also designs engines for Beta motorcycles.

http://forum.onliner.by/viewtopic.ph...37264&start=60

Tough to read, but I get the point. The actual designer has still not been named.

While I'm excited about this new bike, I'd rather see a known platform copy, rather than a clean slate design.

Weldangrind 10-01-2014 10:54 AM

Quote:

Originally Posted by SpudRider (Post 173591)

The digital dashboard utilizes a Siemens microprocessor which can be set for either U.S., or metric measurements. It has a fuel gauge on the left, and an engine coolant gauge on the right. It also includes a trip odometer, clock, gear indicator, and digital speedometer.

The top of the dashboard features an analog tachometer.

http://content.onliner.by/forum/1bd/...7df2a6bdd5.jpg

That's a sharp look. If I had to choose which instrument would be digital, it would be the speedometer. A digital tach jumps around too much and is a distraction for me.

I like how the entire cluster is mounted to the frame, but the igntion is mounted to the steering.

Weldangrind 10-01-2014 10:56 AM

Quote:

Originally Posted by SpudRider (Post 173597)
After the bike is delivered, I am confident we will quickly get the gearing, and the rear wheel figured out. :) I am also considering a 21-inch, front wheel for this bike. ;)

Since this will not be the agressive dual sport style that you're accustomed to, I suspect that the 18" front wheel will meet your needs nicely. It really is a nice blend of dual sport, adventure bike and SM.

Weldangrind 10-01-2014 11:15 AM

Quote:

Originally Posted by SpudRider (Post 173599)

The camshaft is support by two ball bearings.

http://item.taobao.com/item.htm?spm=...71&ns=1#detail

That's good news.

I looked at the link, and the cam also appears to have a ramp that is typical of automatic decompressor devices. That would be good to know for sure.

Weldangrind 10-01-2014 11:18 AM

Quote:

Originally Posted by SpudRider (Post 173600)
I found some fork and shock absorber specifications in the following thread. :)

http://forum.onliner.by/viewtopic.ph...7264&start=240

Fork Diameter: 37mm
Fork Length: 795mm
Fork Stroke: 200mm

The fork diameter and fork length seem accurate to me. If the fork stroke is also accurate, fork travel is 7.9 inches, which is excellent for Chinese forks. :tup: Standard, 37mm Chinese forks have a travel of 6.5 inches. ;)

Shock Absorber:
Length: 390mm
Stroke: 60mm

These are very nice specifications for the shock absorber. The RX3 shock has a progressive, lower shock linkage, spring preload and rebound damping. :tup:

Minsk TRX 300i reviews state the bike has a very good suspension. I was very pleased to discover these specifications for the suspension; I hope they are accurate. :)

Indeed. A true 7.9" travel would be a nice surprise. If it turns out to be fact, I can see buying a set for Lifanda.

I wonder if the rear shock is also equipped with a schraeder valve for charging with Nitrogen.

Weldangrind 10-01-2014 11:24 AM

Quote:

Originally Posted by Wolftrax (Post 173601)
'
I'm with you on this. I think an 18" rear nd 21" front would be perfect for those of us that may stray off the pavement. More ground clearence and a big hoop up front to roll over obstacles. I ran a 21" up front on my Tenere and it made a huge difference in the soft stuff. Should keep the bike geometry pretty close to stock as well.:clap:

I agree with that logic. I had an old XL250S with the rare 23" front wheel, and it was unstoppable. That said, the RX3 has a lot of "stuff" on it that might be shaken to bits if ridden too aggressively off road. I can certainly see fire road or logging road use, but I wouldn't take it on a single track ride.


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