Can i lengthen a shimano chain?

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dezzie
Posts: 31
Joined: 18 Aug 2015, 2:59pm

Can i lengthen a shimano chain?

Postby dezzie » 29 Nov 2018, 12:00pm

My Conundrum is i am rebuilding an old F frame Moulton with modern components, it now has an 8 speed sturmey hub and a modern pista crank/chainwheel, i wanted a nice bling chain and got a Shimano nx01 oval link chain but its to short, so i bought another hoping to be able to remove the amount i need to lengthen it by quite a bit, is it just a case of easing a pin out and adding the length needed? I dont want normal looking chain links added so let me know if anyone has done it, until the bikes complete and gearing is worked out and tested i am not settled on an exact length yet but it my be 6 inches plus.
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dezzie
Posts: 31
Joined: 18 Aug 2015, 2:59pm

Re: Can i lengthen a shimano chain?

Postby dezzie » 29 Nov 2018, 12:01pm

This type of chain.
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NATURAL ANKLING
Posts: 12504
Joined: 24 Oct 2012, 10:43pm
Location: English Riviera

Re: Can i lengthen a shimano chain?

Postby NATURAL ANKLING » 29 Nov 2018, 12:43pm

Hi,
Nice heavy swaging of those pin ends means that, I would probably grind off pin head where you want to split the chain before using a pin extractor (chain splitter / rivet tool), to save opening up / damaging the pin bushing hole.
Then I am afraid you will have to use standard looking link magic links.

Its possible to bodge the whole affair, but you would need to be confident at metal work.
I say that grind off both pin heads on spare length of chain, and after joining the chain with original oval outer links you have removed earlier, on rear of chain use a conventional plain outer plate, but you would need to match up a plate that with push back on the pins to give a good tight fit.
Not easy but not impossible, the aesthetics would from the front be a joinerless chain.
NA Thinks Just End 2 End Return + Bivvy
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Brucey
Posts: 42890
Joined: 4 Jan 2012, 6:25pm

Re: Can i lengthen a shimano chain?

Postby Brucey » 29 Nov 2018, 2:42pm

you can lengthen any 1/8" chain by installing an extra length of chain with a pair of joining links. If in doubt, try that; nothing lost...

cheers
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