+1 to the good advice above. I have never had a patched tube fail at the patch--BUT you must use good patches and vulcanizing fluid! I use Rema. The Park patches that just stick on are total junk.
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1964 JRJ (Bob Jackson), 1973 Wes Mason, 1974 Raleigh Gran Sport, 1986 Schwinn High Sierra, 2000ish Colian (Colin Laing), 2011 Dick Chafe, 2013 Velo Orange Pass Hunter