ejism

Hello. New to forum. I am looking for a chain replacement for Multitrek 750 21 speed. Current chain is Shimono IG30, link count is 106. Bike was purchased in early 1990's so I'm pretty sure original chain is no longer available. I understand that HG chains will work, but will harder. Can anyone recommend a good replacement? I was looking at VGEBY 116 link. Current chain is not broken, I would just like to have one available/with me for when it does.
thanks

Iride01

Generally just go by the number of cogs on the rear and chose a brand of chain that you wish to try. KMC, Shimano and many others are all good chains.

7 speed rear, I don't remember if it's 8 speed or less is all the same, or 9 speed or less is all the same. But whatever is the least speed you can find close to yours will work. Make sure you know how to break the chain to size it to your bike. Otherwise go to a bike shop and just let them deal with it.

If your chain is a popular size, then there is still a inventory shortage ya' know.

alcjphil

If you keep going until the chain breaks, you will probably be replacing more than just the chain. Cassette/freewheel cogs will be badly worn, possibly chainrings as well

ejism

Thanks for info and quick response.

John Valuk

You might want to learn how to measure elongation of your chain so that you can get a better idea of when it needs to be replaced. You can have a shop do it, of course, but if you're taking care of lubricating the chain yourself, then checking the condition of it is a good thing to be able to do, too.

For a replacement, you might look at the Wippermann Connex 8-speed chains (800 / 804 / 808).

KerryIrons

And yet you didn't explain this extremely simple task. For the OP, chains are 1/2 inch pitch. That means 24 links = 12 inches for a new chain. For something like a 7 speed, you should replace the chain when you reach 1% elongation, which will be 12 & 1/8 inches in 24 links. When you install a new 7 spd chain (any 7 spd chain will do) you might experience the chain "jumping" when you pedal hard in certain gears. That means the cogs on the back wheel (the cassette) need to be replaced as well.

dedhed

Just go get a $10 8 speed chain (6/7/8 all the same) with a quick link available almost anywhere, and replace it now rather than waiting for it to break and hurt yourself or be stranded. You'll need a chain tool to shorten the new chain to fit. Plenty of videos on how to size and install a new chain.

https://www.rei.com/product/198978/s...E&gclsrc=aw.ds

John Valuk

Do you think that scolding me constitutes a positive contribution to the discussion?

ejism

thanks

ejism

thanks. first i heard of connex. all "best of" lists contain same 5 or 6 chains and go straight to amazon. will check it out.

ejism

thanks for instruction. elongation measures right at 12 inches. i purchased bike new, but don't have a lot of miles on bike. just being proactive so i don't get stuck on the road.

KerryIrons

Consider it coaching on how to directly help a poster instead of offering only broad comment.