What caused my DS cup to loosen on my BB?
#1
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What caused my DS cup to loosen on my BB?
Italian bike (Mondonico).
Phil BB.
10K miles.
I was having f der problems - not shifting into the large ring. I brought it into my LBS and he pointed out that the drive side cup had unthreaded about 1 cm. I had not noticed this as I tried to debug the problem.
I already have a crank puller, so I bought the phil cup nut for future problems. But I was wondering...
Is this a common problem for Italian threaded bikes? This has never happend to me in 35 years of cycling.
Phil BB.
10K miles.
I was having f der problems - not shifting into the large ring. I brought it into my LBS and he pointed out that the drive side cup had unthreaded about 1 cm. I had not noticed this as I tried to debug the problem.
I already have a crank puller, so I bought the phil cup nut for future problems. But I was wondering...
Is this a common problem for Italian threaded bikes? This has never happend to me in 35 years of cycling.
#2
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They have standard right hand threads, so they may come loose while riding
Originally Posted by Sheldon's Site
Italian bottom brackets, like the French, use a right-hand thread on both sides, so the fixed cup is prone to loosening up unless very securely tightened.
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i jam my thumbs up and back into the tubes. this way i can point my fingers straight out in front to split the wind and attain an even more aero profile, and the usual fixed gear - zen - connectedness feeling through the drivetrain is multiplied ten fold because my thumbs become one with the tubing.
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use locktite on the ds threads as it is an italian BB.
second, are you installing the bb with two phil tools or just one?
second, are you installing the bb with two phil tools or just one?
#5
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I bought just one phil tool because the bike wrench said I could get by with one. Did I need two? I could see where having two would be nice, but is it essential?
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Yes. I mean the tools are expensive, unless you really are doing a lot of phil wood bb installs i'd let you LBS handle it (assuming they know what they're doing).