Thursday, December 18, 2014

Don't Get Cut - Use an Acorn Nut (Fender Repair 3)

My home made bicycle fenders have been holding up pretty well for the last two years warranting only minor repairs.  There was one major flaw in the design that I was aware of from the start, yet never did anything about it until now.  The metal struts holding the end of the front fender to the fork have threaded ends that protrude outwards from either side of the fender.  This proved to be a danger since they are in the perfect location to accidentally cut my legs while dismounting or walking along side the bike which happened at least 3 times.
exposed sharp threaded fender mounts
The solution, which I admit should've been done much earlier, was to switch out the regular nuts with acorn nuts.
try not to place sharp protruding objects within close proximity of moving body parts
Note to self: try not to place sharp protruding objects within close proximity of moving body parts.
Acorn nuts offer the advantage of not snagging the sharp threaded end on objects and human flesh in addition to protecting the threads from getting damaged or more rusty than they already are.  The downside is the need to cut the threads short enough to fit inside the acorn, also they cost 8x more than a regular nut.  So make sure to put some Lōc-Tite on them so you don't lose them.
acorn nut close up

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