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Shimano Sora BR-3400

Old 08-25-10, 12:35 PM
  #1  
thomamueller
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Shimano Sora BR-3400

I have a 89 Trek 400 and I upgraded the handle bar and replaced the brake levers with Shimano Sora BR-3400. Went for my first test ride and the damn brake levers rattle. Brakes are on tight, wrap is down, and tighten the head set just in case bearing were loose. Besides replacing and ideas what is going on?
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Old 08-25-10, 02:05 PM
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They shouldn't.

Are they stopping you?
Is it both levers?
Can you move them easily when underway?
Calipers adjusted well?
Cable tight?

Can you replicate the rattle at rest?

Sometimes, when you mount the levers, the cable housing hangs up on either the barrel adjuster or the insertion point on the lever/shifter body. Also, the cable bell end isn't seated properly when you adjust the cable tension and calipers. Check these first by loosening the cable and making sure the assembly is tight and right on the bar. After that, check your cable housing at each end. After that, pull on the open end and make sure the bell end is seated in the brake lever, and the piece it fits into is also seated. Keep tension on the cable and clamp it down, even if it's not adjusted perfectly, and ride it to see if it rattles.

This is better corrected in person. Other than above, I can't seem to visualize what may be wrong.
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Old 08-25-10, 06:28 PM
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thomamueller
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Okay here is my theory. Went for a 30 mile ride later and got to listen to it for a long time. Drove me crazy. I think I did not set the casing far enough in. It sound like the wire vibrating again the handle bar or brake. So I will tear down and re-do after tomorrow's ride. Will remove the cable and take for test ride. If no rattle, then it was my cabling causing the problem.
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Old 08-25-10, 08:33 PM
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wrk101
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Good theory. Cable housing not fully seated up into the lever.
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Old 08-26-10, 08:02 PM
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Its the brakes. Removed the cable and brake wire and it still rattles. Ordered new SRAM 500s. They will match up nicely to the new SRAM Rival calipers.
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