after a chain for my Chinese pitbike

[slickncghia]

G'day guys

I've had this little play bike in the shed for a long time

It's seen better days but the engine is new

It didnt have a chain when I acquired it. I tried to purchase one online once and found it was completely the wrong size.

Can anyone point me in the direction for a chain for this type of bike with this style gearbox /sprockets

I can grab the exact measurements if this isn't an easy question.
This is the type since I can't upload pics

Thanks for any replies.

m.made-in-china.com/product/710935525

 

[Snaptrax]

Gmx dirt bikes sell them mate.

 

[slickncghia]

Thanks for that. Do you know what chain size it is?

 

[xLOCOx]

most likley a 420 pitch... or a 428 pitch

 

[slickncghia]

Really? for a little 49cc bike?

 

[Blender]

420 and 428 pitched chains are used on pretty much all chinese pitbikes. iirc, that bike runs a 420 ?

 

[Snaptrax]

These little bikes run a tiny little chain.
http://www.gmxmotorbikes.com.au/gmx-49cc-quad-pocket-bike-chain-8mm-x-820mm?search=Chain
They are around a 220 chain. Even smaller then a push bike chain.

 

[my67xr]

it will be a 25H chain most likely
but for the length, you'll need to know what size sprockets are you running, front and rear
and does the bike have a gearbox on the clutch, or is there just a small gear ?

http://www.ebay.com.au/sch/i.html?_...570.l1313&_nkw=25h+pocket+bike+chain&_sacat=0



btw welcome to Miniriders too.

don't forget to drop by into our Introduce Yourself thread too

cheers, craig

 

[slickncghia]

There's a gearbox. By which I mean one of those 3 to 1 reducers. Its from what I understand a "CAG " engine if that helps

 

[slickncghia]

16tooth front sprocket

 

[slickncghia]

It's this bike exactly
https://www.youtube.com/watch?v=R4Y4B0YJK14&feature=youtube_gdata_player

Just with some bonus rust and no chain.

 

[my67xr]

do you have a bike chain breaker ?
or have you ever had to grind the head off one of the link pins to shorten a chain ?

if your answer is yes to either question, i would just buy a 138 link chain and cut it down to suit.

just make sure your wheel is adjusted as far forward as possible, before you go to measure it.

 

[slickncghia]

I've replaced chains on full sized motorbikes before. Using angle grinder and either master link or ball peen hammer

I'm mostly unsure of the width of the chain rather than how many links. the width /link size is what I'm unsure of

 

[my67xr]

have a look here to work out what style chain you need
http://www.sprocketsunlimited.com/Chainspecifications.html
with the length, can you measure around the sprockets with a piece of string ?

 

[slickncghia]

Thanks to all the responses I measured it as aT8FChain.
Needing ~126 links. So I jumped on eBay and grabbed a 128 (which will fit if the Axel is back a little) and a couple of masterlinks incase I need to shorten it.

Thanks again for the tips. I'll post it running when the chain arrives

 

[slickncghia]

FYI. Just cleaning my garage as I'm getting ready to move house and I found the old chain that I incorrectly purchased
it was a 25h. Too small in every way