Trying to determine the model of a recently acquired large pocket bike - Pocket Bike Forum - Mini Bikes
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post #1 of 133 (permalink) Old 07-21-2019 Thread Starter
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Trying to determine the model of a recently acquired large pocket bike

I am not new to scooters, quads, dirt bikes, and so on, but the Chinese Pocket Bike format is definitely mind boggling. Too many chiefs, not enough Indians when it came to manufacturing. Wiring is a mess. Tracking down parts is hit or miss. Hope to eventually get it going.
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Re: Trying to determine the model of a recently acquired large pocket bike

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Originally Posted by nerdydaddyo View Post
I am not new to scooters, quads, dirt bikes, and so on, but the Chinese Pocket Bike format is definitely mind boggling. Too many chiefs, not enough Indians when it came to manufacturing. Wiring is a mess. Tracking down parts is hit or miss. Hope to eventually get it going.
Posting a pic of your recently acquired Chinese made bike will help alot in getting an identification..

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post #3 of 133 (permalink) Old 07-21-2019 Thread Starter
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I don't seem to have the option to post photos in the forums. I even tried to post a request for help in the help forums and that wasn't an option either. Guess I'm too new still. 🤣
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Upload the Pic on a file sharing site and post the link.

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Re: Trying to determine the model of a recently acquired large pocket bike

You need 6 posts I believe, You might stay on the Intro section to get more posts. You might pick up more if you reply to other members post. 5 per post, 512Kb or less, ( 1/2 Meg. ).

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post #6 of 133 (permalink) Old 07-23-2019 Thread Starter
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OK. I'm posting a few photos here. Need help identifying these parts. Someone has either wired something wrong or removed things altogether. It's a mess. 😂







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Re: Trying to determine the model of a recently acquired large pocket bike

It looks like an X super pocket bike, It looks like its setup for racing. I don't have any of what's shown there on my X18.
Looks like someone I believe put a different CDI electric setup on it because of the yellow wire come out of it, which I think goes to the stator plate that makes electricity for the CDI and the battery etc.. I would get the .com address off that black box and see where it takes you. Here is the stator plate and CDI & wiring for on X18, 110cc, 4 stroke honda clone engine.
Attached Images
File Type: jpg X18.JPG (498.8 KB, 5 views)
File Type: jpg X18-1.JPG (505.6 KB, 2 views)
File Type: jpg X18-2.JPG (381.4 KB, 2 views)
File Type: jpg 4 Stroke Stators & CDIs and Wiring3.jpg (173.6 KB, 3 views)
File Type: gif X18 Wiring Dia1..gif (34.6 KB, 3 views)

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post #8 of 133 (permalink) Old 07-24-2019 Thread Starter
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I'm not sure if it's set up for racing since it's only a 2 stroke motor. That much I knew from the start. The box address is sanhua.com.cn which is a very legitimate site but none of the photos match the part. I would really just like to put in a different CDI and have it run close to stock, but I don't know if it's worth investing much without seeing it run. I still can't get it started yet because of the wiring. The biggest issue with the wiring is that I can't use any wiring diagram because the colors are mismatched and there seems to be a weird fifth wire split on the ignition switch, which also had to be replaced because the former owner busted it up to bypass it. Looks like I may have to pull the whole harness to trace it. If you look at the throttle, it has a green push button. Is that a start button or kill switch (what they refer to as Flameout)? And the right side also has a green button, I'm assuming that's headlights. It's just below the horn. Two black wires coming out of the top of the motor from the spark plug, can't seem to map those correctly. Heck, I have a good battery and can't even get lights to turn on. Crazy that they didn't stick to a color coded wiring setup. What labels any connections did have have fallen off from age. The body panels were in OK shape, I was able to use rubbing compound and wax to get them to shine back up. If I can get any of it to work, I'll work on the metal surface rust spots and restore the headlight acrylic clarity, but right now I'm just stuck. Wanting to see it work, already put the newer style carb and air filter on it. Already replaced the gas tank lines and filter. You name it. Identifying the parts makes identifying wiring worse. I assume the bike is over a decade old, but I have no reliable way of knowing. It's labeled Y N B Motors. 49cc. The motor has a plate that says Turbo 49CCPB. But all of that has been a dead end. It also has no charge port of any kind. Any help identifying the bike or parts enough to get it running would be fantastic.
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Re: Trying to determine the model of a recently acquired large pocket bike

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Originally Posted by nerdydaddyo View Post
I'm not sure if it's set up for racing since it's only a 2 stroke motor. That much I knew from the start. The box address is sanhua.com.cn which is a very legitimate site but none of the photos match the part. I would really just like to put in a different CDI and have it run close to stock, but I don't know if it's worth investing much without seeing it run. I still can't get it started yet because of the wiring. The biggest issue with the wiring is that I can't use any wiring diagram because the colors are mismatched and there seems to be a weird fifth wire split on the ignition switch, which also had to be replaced because the former owner busted it up to bypass it. Looks like I may have to pull the whole harness to trace it. If you look at the throttle, it has a green push button. Is that a start button or kill switch (what they refer to as Flameout)? And the right side also has a green button, I'm assuming that's headlights. It's just below the horn. Two black wires coming out of the top of the motor from the spark plug, can't seem to map those correctly. Heck, I have a good battery and can't even get lights to turn on. Crazy that they didn't stick to a color coded wiring setup. What labels any connections did have have fallen off from age. The body panels were in OK shape, I was able to use rubbing compound and wax to get them to shine back up. If I can get any of it to work, I'll work on the metal surface rust spots and restore the headlight acrylic clarity, but right now I'm just stuck. Wanting to see it work, already put the newer style carb and air filter on it. Already replaced the gas tank lines and filter. You name it. Identifying the parts makes identifying wiring worse. I assume the bike is over a decade old, but I have no reliable way of knowing. It's labeled Y N B Motors. 49cc. The motor has a plate that says Turbo 49CCPB. But all of that has been a dead end. It also has no charge port of any kind. Any help identifying the bike or parts enough to get it running would be fantastic.

Sounds like either an X2 or an X3 2 stroke model....It could even be an X6 or X8....Any 2 stroke midbike with a CVT trsbsmisdion is considered a 49cc Turbo model.....

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Last edited by CAM2; 07-24-2019 at 07:28 PM.
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post #10 of 133 (permalink) Old 07-24-2019 Thread Starter
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That's great. Definitely helps to have a jump off point so I can get rolling in the right direction. I will start researching those models, and in the meantime I guess my only immediate option for the wiring mess is to pull the whole spider web harness out and rebuild it wire by wire. I doubt very seriously if that Sanhua box, which I assume is a CDI (first time I've ever seen one where the wiring comes out of the box vs plugs in to it), is even made anymore so replacing it is out of the question. I'm gonna have to wire for an aftermarket CDI like I I have on the Quad for sure. I was thinking about using the Quads wiring as a template to rewire the pocket bike. Any other suggestions would be greatly appreciated. Thanks. 😎
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post #11 of 133 (permalink) Old 07-24-2019 Thread Starter
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For fun, I did email Sanhua at the email address they had on the website for support, but I'm not holding my breath for a response from them.🤣 It's like wiring a car stereo if anyone here is familiar in that regard. You just need to know the pinout and you can rewire from there.
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you may be working on someone's failed attempt to get some random CDI box working on that engine.

If it were me I would get a factory style CDI box wire it properly and get spark then go from there.

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post #13 of 133 (permalink) Old 07-25-2019 Thread Starter
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you may be working on someone's failed attempt to get some random CDI box working on that engine.

If it were me I would get a factory style CDI box wire it properly and get spark then go from there.
That's definitely the way I want to go. My question is this: how to I go about selecting a different CDI? Do I base it off the amount of accessories (horn, lights), type of motor, etc?
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post #14 of 133 (permalink) Old 07-25-2019 Thread Starter
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Going back to this, can anyone identify this part so I know whether or not to scrap it or attempt to replace it?

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Re: Trying to determine the model of a recently acquired large pocket bike

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Originally Posted by nerdydaddyo View Post
Going back to this, can anyone identify this part so I know whether or not to scrap it or attempt to replace it?


Now that I'm on a different mode of viewing I can see you have an X7 FS529....

FYI that bike has alot of wiring connections for just a 2 stroke too..It might be a 70cc 4 stroker as 2 stroker models DON'T have a CDI.

Post up pics of the motor...

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Last edited by CAM2; 07-25-2019 at 07:36 AM.
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post #16 of 133 (permalink) Old 07-25-2019 Thread Starter
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Here's a whole bunch of photos (including the carb upgrade kit I added). It's definitely a 49cc 2 stroke because no oil injector.












The more I look at it, the more I'm thinking it's not an electric start and the green button on the throttle grip is a kill switch and not a start button.
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post #17 of 133 (permalink) Old 07-25-2019 Thread Starter
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Throttle grip with green button.

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post #18 of 133 (permalink) Old 07-25-2019 Thread Starter
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With the pull start cover removed, it does resemble an electric starter. 😆

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post #19 of 133 (permalink) Old 07-25-2019 Thread Starter
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Last two photos for the day. This is of the 3 wire controller box. First shows the wiring diagram on the box. Second shows actual wiring in bike. The yellow wire states MOTOR, but as you can see, it is wired to the same post (on what I figure is the starter solenoid) as the red wire from the controller box which is labeled BATTERY +, which makes no sense to me. Seems like the yellow motor wire should go elsewhere. I thought maybe the controller box would be the first step in tracing the wiring issues, so if anyone notices anything off in the image, please let me know. The fuse holder is to the top right, has the red and braided wires running to it.



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Re: Trying to determine the model of a recently acquired large pocket bike

It's an X7 fs-529 2 stroker. ..you don't need wiring to get it to run you just need the ring,shim and pullstarter...

What you don't realize is that engine is an industrial based tool engine used on backpack blowers,augers, trash pumps and brushcutters...

The wiring is just a problematic novelty along with the e-starter/generator combo...

https://www.pocketbikeplanet.com/82-...ke-engine.html

Good luck with it....

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Last edited by CAM2; 07-25-2019 at 10:57 AM.
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