I have an old vertical dropout frame with a knackered mech hanger, I want to run it singlespeed but will need a chain tensioner. Most I can find bolt onto the mech hanger which is, as I say, knackered.

So what are my options for a tensioner, does anybody still do chainstay mounted tensioners?

Could try something like a Blackspire Stinger that mounts to the BB, not sure how well it would work.

Bolts into your vertical dropout

ghost chain ring? 🙂

Trickstuff Excenticker?

http://www.singlespeed.nl/catalog/product_info.php?manufacturers_id=65&products_id=216

Forward Components version

http://www.forwardcomponents.blogspot.com/

Although I think this is proper better value 🙂
Kore Chain reactor

http://www.chainreactioncycles.com/Models.aspx?ModelID=17621

Thanks all. That Kore one looks cheap and cheerful enough for me 🙂