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I have recently replaced my old Gusset Bachelor SS tensioner for a new Gusset sprung tensioner with a jockey wheel (https://www.gussetcomponents.com/shop/chains-and-chain-devices/squire-ss-tensioner/). However I can't seem to tighten the bolt into the mount (the hole next to the drop out, where the tensioner attaches). I'll add some pictures to make it clearer. When I tighten the bolt with a hex key it just keeps spinning and will be loose, however if I take the spring mechanism out of the housing the bolts tightens just fine, so the spring is blocking part of the bolt to be tightened maybe. I'd appreciate any advice.

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  • Question on the side: why do you need a tensioner? Shorten the chain to 1-1.5cm slack, use a re-usable master link and leave the tensioner away.
    – Carel
    Aug 1, 2019 at 20:01
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    Because the drop outs are vertical, unlike horizontal drop outs you can't adjust the wheel position to create more tension/slack in the chain
    – Sean2148
    Aug 1, 2019 at 20:22
  • Check the threads on the derailleur hanger and the bolt to be undamaged. Check if the spring can be rotated to be put in a better position relative to the hanger or the arm.
    – Grigory Rechistov
    Aug 2, 2019 at 12:22
  • Did you have the chain on when installing the tensioner?
    – ojs
    Aug 3, 2019 at 9:28

1 Answer 1

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Is it a push up or pull down spring? As far as I know, the chain can be put in tension both ways, but a specific tensioner will work only in one direction (either pulling up or pushing down, therefore the chain should run above or below the jockey wheel.

Emergency fix: run the chain above the jockey wheel and zip tie the tensioner to the frame.

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  • Good idea - pushing up at the bottom would give more chain/tooth engagement on the sprocket and chainring.
    – Criggie ♦
    Aug 2, 2019 at 22:49

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