@green dragon How did you store the J125? Any trouble getting it to light? Makes me wonder if I should remove the charge on this circa 1990 I65W and give it a go.
Nothing special storage wise - been in my storage magazine in unheated garage. No way to really scuff up the grains on single use motor, so we just used a daveyfire and short thermalite piece - took a few seconds to light up but flew fine.
Older Aerotech motors are notorious for the 'bonus delay' syndrome, so if you have electronics, I would say dump the powder out and light it up
. On ours, no plugging the delay well with epoxy or anything, we dumped the powder out, put an Estes igniter plug in the touch hole, packed to the top with dogbarf wadding and taped over the top.
NO reason most older motors should not fly fine - I've had a few reloads that rains swelled enough to be unusable ( or need to be cut down ),but single use where the case keeps grains from swelling too much should be fine.
Since getting active again flying with my boys, we burned quite a few old motors, including some Kosdon E40s I;ve had since early 90's,couple Ellis Mountain motors. We did try to fly an older E15w and could not get it to light,probably oxidized and the nozzle is so small it's hard to get much of an igniter in there - we'll try it again with straight thermalite and see what happens.