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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 08-10-15, 02:55 AM   #1
amirinisrael
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Broken Bag Mount Bolts

My wife and I have have toured on our Bromptons, mostly on paved roads, without any problems.
Our daughter, on the other hand, had to ride over gravel for many miles on her recent Eurovelo ride.

After two weeks on her bike, The bolts holding her bag mount snapped.
see https://www.flickr.com/photos/mamas_...n/20188826358/
A bit of forensics indicate that the bolt may not have been tightened enough or may have loosened on route.

Has anybody else had this problem?
If so, are there any ways to "improve" the design?

Amir
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Old 08-10-15, 06:16 AM   #2
jur
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Wow. Makes me wonder if the bag was loaded beyond the spec. 10kg if memory serves? But a long bumpy road would do it I guess.

I would get some high-tensile steel bolts to replace the sheared off ones which were probably plain steel.
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Old 08-10-15, 01:46 PM   #3
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Take the fork out and you can probably continue screwing then in and they will fall out, to the inside,
or EZ outs are used to unscrew broken bolts .. auto mechanics break off bolts too , Auto parts stores will be a place to look .

No mine have not broken off, though I may be prompted to look for heat treated steel replacement bolts of higher strength .

Agree, there may have been some bracket looseness , flexing those bolts to the fatigue limit, it happens.
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