|   spot rings offcenter? | icegeek
Feb 1, 2003 4:38 PM | | I just put a new Spot 32t ring on my Surly and its F'd up. The bolt drilling is off center enough that I can't adjust the chain tension properly. Turning the cranks it varies between too loose and too tight. A friend of mine has the same problem with his ring that he bought at the same time, just not as bad. So what are others experiences with Spot rings? Do you think I just got a bad one and should try and exchange it, or should I just chuck it and go with a different brand? |
| re: spot rings offcenter? | wertico
Feb 1, 2003 4:55 PM | | I have spots on both of My bikes and have no problems. I love the quality and the long wear I get.(over a year on one of them and hardly any noticeable wear) I would call spot and let them know. They have been good to work with in My opinion. |
| They can be adjusted. | shiggy
Feb 1, 2003 5:16 PM | | I stole this from the fixed gear section of Sheldon Brown's site. I have been using his method for years and it works very well. If This does not make enough difference rotate the ring one position on the crank and try it again.
I have have no real trouble with the Spot rings.
...Set the rear axle so that the chain pulls taut at the tightest part of the cranks' rotation. One at a time, loosen up each of the stack bolts, and tighten it back just finger tight. Spin the crank slowly and watch for the chain to get to its tightest point. Strike the taut chain lightly with a convenient tool to make the chain ring move a bit on its spider. Then rotate the crank some more, finding the new tightest spot, and repeat as necessary.
This takes a little bit of your hands learning how hard to hit the chain, and how loose to set the stack bolts, but it is really quite easy to learn.
Tighten up the stack bolts a bit and re-check. Tighten the stack bolts in a regular pattern, like the lug nuts on a car wheel. My standard pattern is to start by tightening the bolt opposite the crank, then move clockwise 2 bolts (144 degrees), tighten that one, clockwise 2 more, and so on. Never tighten two neighboring bolts in a row. You may prefer to go counterclockwise, but try to get in the habit of always starting at the same place and always going the same way. This reduces the chances of accidentally missing a bolt.
Once you have the chainrings centered and secured, adjust the position of the rear axle to make the chain as nearly tight as possible without binding. Notice how freely the drive train turns when the chain is too loose. That is how freely it should turn when you are done, but with as little chain droop as possible. |
| They can be adjusted. | icegeek
Feb 2, 2003 3:38 PM | | Good advice, thanks Shiggy. But unfortunately I did that already on first assembly. Guess I'll give Spot a ring, so to speak. |
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