Anyone know of a good chain tensioner?

[Mgbv8]

I'm using a single rear cog onto a nuvinci 360 - so my chain is single cog to single cog, I've shortened the chain as much as I can, but it still has a bit of play

So need some sort of chain guide / tensioner , and need some recommendations.

Thanks

 

[peter.c]

Alfine chain tensioner works well have used several with geared hubs
Shimano CT-S510 Alfine Chain Tensioner - £26.99 | Chain Tensioners | Cyclestore

 

[Mgbv8]

Alfine chain tensioner works well have used several with geared hubs
Shimano CT-S510 Alfine Chain Tensioner - £26.99 | Chain Tensioners | Cyclestore

Cool, this is exactly what I was after, thanks

 

[Bikes4two]

Alfine chain tensioner works well have used several with geared hubs
Shimano CT-S510 Alfine Chain Tensioner - £26.99 | Chain Tensioners | Cyclestore

A good spot - I wish I'd known about the Alfine before I bought a Rohloff one at more than twice that price

 

[Mgbv8]

Great suggestion @peter.c was able to find a good deal on a new one on eBay for under £20 and it fits perfectly