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Spring tension adjuster on Tektro Oryx

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Spring tension adjuster on Tektro Oryx

Old 07-22-11, 12:08 PM
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Earl Grey
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Spring tension adjuster on Tektro Oryx

I was reattaching the cable to my front brake while unlocking my bike, and noticed a definite 'snap' sound from one of the cantilever arms.

The 'butt' end of the spring, which is supposed to ride on the head of the spring tension adjustment screw, had slipped behind the adjustment screw. This is effectively the minimum tension position. Consequently, the brake pad moved in to full contact with the rim.

One other thing I noticed is that little L-shaped plate that holds the adjustment screw isn't bent to exactly 90 degrees - it's a little more obtuse, so the screw actually points forward a bit rather than moving in parallel to the spring's range of motion. If it was actually 90 degrees, there probably wouldn't be enough of a gap for the spring to slip into. This is the same on all four arms, so presumably just the way they're made.

I am thinking I will remove the spring and try to bend it so that it doesn't try to slip behind the screw. That or try to bend the little plate that holds the adjustment screw so that it is at 90 degrees. Or both.

Any thoughts? If this happens while in motion it'll apply the front brake, so I thought it worth asking for advice.

I can probably get photos if my description is incomprehensible.

Thanks!
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Old 07-22-11, 11:12 PM
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xenologer
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my own oryx don't have the gap issue. perhaps yours are defective? i wouldn't worry about it occurring on road , may cause pads to rub but that won't be at all near the same strength as actually pulling the brake lever
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Old 07-23-11, 07:11 AM
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Earl Grey
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Thanks for the response! I gave the spring and the plate some 'attention' with a pair of pliers, and I think it's made enough of a difference to prevent recurrence.

When I say there's a 'gap', it really is only just big enough, but that's an interesting observation re your set. I will have to check out some other bikes with Oryx and see if mine look significantly different.

Great point about the pads only rubbing, rather than being applied with force. I should have thought of that.
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