Easy build self balancing electric skateboard

Step 15 Chain

Chain is ASA 25-1 chain 
I bought 2m of it from "Bearing Boys" UK. Also on rght is connecting link for when you shorten it.

If unsure how to shorten a chain, bike shops will do it for you.

Comments

[miaoichi]

Hi, John

Could you tell me who to change the chain length ?
What tool should I use ?

Thanks.
Best regards,
Jack

[XenonJohn]

I learned by trial and error:

Get a vice and open the jaws about 3mm.
Put chain on its side with one of the pins linking between links of the chain exactly above the gap. Use tape or a helper to stop it all sliding off onto the floor!
I used a 2.5 mm broken drill bit (the shaft part) as a drift to tap out the pin so it drops out downwards between the gap in the jaws of the vice. Gap should be only just a tiny bit wider than width of the pin else the sides of chain will get bent.

When I say "tap" I actually mean hit it hard with a big hammer. A nail is too soft, it will just bend. That is why I used a broken drill bit. Hold drill bit tightly in pliers or locking pliers from the side and hit top with the hammer.

This is very fiddly to do. Do some trial runs with some spare chain.

Assembly is reverse of this and slightly easier.

You can get proper devices for splitting a chain, and a special removable link that is used to join the shortened ends back together again (this link is visible in one of the chain photos in the instructable but in the end I didn't use it).

I would ask a bike shop to help you out possibly.

John