I've been using a surly singulator for numerous years on my singlespeed. However, I have just put a new drivetrain on using a wider chain than usual (1/8th"). Because I have vertical dropouts I have to use a chain tensioner (half link no use unfortunately) and the singulator has been great. But it seems that the gap between the guides on the singulator is not quite wide enough for a 1/8th chain as it rubs slightly (yes have tried re-aligning).

So – what other options in terms of chain tensioner are there for me? Want it to be as quiet as possible as I hate bike noise!

Cheers,
STS.

You can flip round the chain guide plates to create more internal room for a wider chain* – So no need for a new tensioner.

Clicky

* well you could on the last Singulator I had

That is a good idea – I will see if that's possible…