i have used the dmr tensioner on both on road and off road ss bikes i found it to be quite reliable but found a better solution with http://www.wiggle.co.uk/surly-singleator-chain-tensioner/ because there isnt a sprocket on the dmr just a runner i found if there is too much abuse it can still skip out accidently whereas while i had it i never managed to loose tension with the surly, although i do still keep a spare dmr tensioner just in case because they are sooo simple
i have used the dmr tensioner on both on road and off road ss bikes i found it to be quite reliable but found a better solution with http://www.wiggle.co.uk/surly-singleator-chain-tensioner/ because there isnt a sprocket on the dmr just a runner i found if there is too much abuse it can still skip out accidently whereas while i had it i never managed to loose tension with the surly, although i do still keep a spare dmr tensioner just in case because they are sooo simple