Hi-Bird QH-125-10
 

Greetings all,

First post and not sure if it's in the right place.

I recently purchased a 2007 Hi-Bird motorcycle and need the rear sprocket hub as the one that was on there is shattered. Also need the rubber thingies that go inside the wheel (dampeners?) oh and the bearings that were inside the hub were scratched. I could tell it had been moving around for a while.
As you can probably tell I am somewhat new to having to fix my ride.

thanks in advance.

Chuck

forgot to add a picture of what is left after hub was off.

That wheel is similar to 90s CB125T. U can compare it @ http://www.impex-jp.com/catalogs/mot.../11kc1fj7.html
Mark down what u need, we can find the compatible

I apologize I could not read it and google wouldn't translate that site.

I have been able to grab the larger parts that formed the hub for the sprocket in the back. I would need that piece the rubber dampeners and the bearings. Here are a couple pictures of them.

It's the F12-1 in that link.
http://www.impex-jp.com/assets/image...012_F-12-1.png
http://www.impex-jp.com/assets/image...013_F-12-1.png
---
http://www.bike-parts-honda.com/moto...125TP-680.html

I looked at both of those pictures and I am unsure which part was the whole hub assembly. Its possible it would be number 8 on there as that looks like it is the entire wheel and bearings. Again I am showing how much I need to learn about these.

I appreciate your assistance for this part.

Update: Ok, So I have been looking around and reading some other posts, they mentioned a site called http://www.china-parts.co.uk/ and I think I may have found the part that seems to match fairly well.
Rear Wheel Hub - CG Ref: WH008004
Currently they are out of stock.

Welcome!

What type of bike do you have? Street? Dual Sport? Dirt?

Thank you for the welcome.

The bike is a Hi-Bird QH-125-10. I think its a street only bike. On the hi-bird site it shows something completely different that what I have. Mine is more like a scooter type with the gas tank under the seat. It looks like the one in the thread here. http://chinariders.net/showthread.ph...hlight=Hi-bird. Going to the Honda dealer tomorrow to see if they have something that would help.

Those are neat machines; the remind me of the old Honda Cub.

Be careful going into the dealer. As soon as they learn it is a China bike, they'll likely give you the silent treatment.

ok so I purchased a Honda CT90K1 Trail 90 Rear sprocket hub from ebay since it most closely matched in specs the one that had broken and it came with a 45 tooth rear sprocket. The original sprocket is a 42 tooth. What would be the difference if I used the 45 rear instead of the 42. I am not sure what is on the front as of yet since I have not opened that hatch at this time.

The 45 will be a little lower geared. Depending on the front sprocket you may find that you need to shift earlier and loose alittle top speed.

that makes sense. I will see if I can get the 42 on there and see what the front is. Thank you for the info.

Without changing anything else, the 45 tooth rear will help you accelerate more quickly.

Is there a way to get that acceleration and also keep a good top end? The top end on the bike I have is pretty low already, supposed to be around 65 but more like 40 to 45. I am still attempting to get information on gearing for the bike. Ascot500 is the only other user I have seen with the exact bike I have.

You can keep playing with gearing until you find the sweet spot. Use math to determine the ratio you're working with, and then move the ratio up or down, according to your needs. You can also look at JT's chart here: http://www.jtsprockets.com/fileadmin...tgearratio.pdf

Once you have the acceleration and top speed you can work with (it's always a balance), the next step would be "stage one mods" to help the bike breathe better and flow a little more fuel to compensate.

Chuck, I no longer have my QH-125, but I do have some sprockets left
Ping me if you still need them
Ascot500@hotmail.com

Ok, so I have been working on the bike for a while now. It is on the road but who knows how safe.

Thanks to Ascot500 I have some new shiny sprockets to play with. I am putting in the 17T front sprocket and the size of it gets in the way of the cover plate. I will be grinding down the curved section you see on the left side. http://i1168.photobucket.com/albums/...psgxxhvcd5.jpg
Here is the 17T installed and you can see how much room is left in that area.
http://i1168.photobucket.com/albums/...psb9de7u6v.jpg
It doesn't appear to be rubbing on anything at the moment but I will be checking that regularly.

As I had previously noted I used an old 69 Honda CT90 Trail rear hub. I do not think its doing the job safely. Here is a pic of it, just looks like its not mating right. I can feel a slip and wobble in the rear around corners and while riding at times. the slip or wobble doesnt happen often but I can feel it when it does. http://i1168.photobucket.com/albums/...pscnhv2lka.jpg
Does anyone have suggestion on where I can get new wheels and tires.
Front: wheel- 17x1.4 tire- 2.5x17 Rear: wheel- 17x1.85 tire 2.75x17.

Last piece is my speedo jumps by large amounts while I am riding. Doesnt matter if I am accelerating or cruising. I jumps around then settles down. seems to accurately get 35mph but anything lower or higher it bounces like mad. Not sure what I can do to calm that. I have replaced cable since the old was was missing. greased the cable. Will check the gears in the front wheel hub. Also it seems to jump more or less in different gears. Not sure how to explain it.


Any advice is greatly appreciated.