Breaking rear spokes on gun drive

I've done the task of replacing each spoke, one at a time to match them up the same. Then I had a good wheel guy do the truing. This was a common bmx wheel though. No dishing or any other fancy stuff. I imagine a hub drive with a cassette would be harder. But that is a option (I guess).
 
I went to bike mechanic school in 2009 to get my certification. My thoughts.

Machine-built wheels are generally inferior to their handbuilt counterparts, not because of any inherent differences, but in the amount of time the wheel is built. Failing to pre-stress metal components is key.

We were taught to bring spokes up to some tension, leave them a few minutes, then detension them fully, and only then begin the dish / true / tension loop until finished.

We were pre-stressing all components first and then taking our time during the build. This allows the metal to settle in easier - less "muscle memory" - and maintain a more constant tension than anything built in a hurry.

I can't ever remember having to retrue a set of wheels I built. Not even a little, and I was quite fastidious about truing spec - within 0.5mm lateral and 1mm vertical. So every wheel I built stayed true for the rest of its life.
 
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I've had spoke trouble on the last four Trek conventional bikes I've owned. I'm 250 and sometimes carry 50+ pounds of gear. I also ride rough trails and have broken 12 gauge spokes on 36 hole rims. All the bikes had a 300# rating, but I managed to break spokes anyway.

When e-bike shopping, I wanted a hub drive, but was concerned about the spoke issue and the difficulty of repair. To eliminate the problem, I chose bikes with mag wheels rated at 450#. I've had no problems in 8 years now.

I realize these are extreme conditions and not something the average rider needs to consider, but mag wheels have been a problem solver for me. Unfortunately, this limits the selection of bikes, since only a few have mag options. Conversions are possible but difficult for hub drives since the rear mag needs an integrated motor. YMMV.
 
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