I know this is old but thought id add in. I actually had similar experience with the mini arrow ive now built a 3rd and 2 spares. Although im not a new flyer im stil inexperienced I come from helis and have flew trainer fixed wing before. Stillmanaged to break 2 mini arrows very quickly.
Fu nily enough mines did exactly what yours did, suddenly took a nose dive to thje ground and broke the same way even on soft grass, tjheres a week point in the wing that breakns in nose crashes.
Anyway i think its pretty much down to CG. I had nothing but trouble getting mine to fly until i made sure it was bang on the 1.75 mark, and then it flew fairly well. i got mayb e 6 or 7 flights out of myu wing then it suddenly did it (think the battery might jhave sjhifted)> So i build a 2nd. it did the same thing in its maiden flight but i was sure the CG was ok however it did not fly like it was.
anyway i build a 3rd, (and 4th and 5th as spares) double made sure it was balanced and hey presto it flew no hasles witjh just a few clicks of down elevator and landed with ease 6 minutes later.
Coming from helis i found it really odd to fly without rudder, i have a profile 3d foamie i built and i used rudder automatically to keep the plane level during the turn. takes a while to get used to, dont try to get too low as things get bad really quick.
Fu nily enough mines did exactly what yours did, suddenly took a nose dive to thje ground and broke the same way even on soft grass, tjheres a week point in the wing that breakns in nose crashes.
Anyway i think its pretty much down to CG. I had nothing but trouble getting mine to fly until i made sure it was bang on the 1.75 mark, and then it flew fairly well. i got mayb e 6 or 7 flights out of myu wing then it suddenly did it (think the battery might jhave sjhifted)> So i build a 2nd. it did the same thing in its maiden flight but i was sure the CG was ok however it did not fly like it was.
anyway i build a 3rd, (and 4th and 5th as spares) double made sure it was balanced and hey presto it flew no hasles witjh just a few clicks of down elevator and landed with ease 6 minutes later.
Coming from helis i found it really odd to fly without rudder, i have a profile 3d foamie i built and i used rudder automatically to keep the plane level during the turn. takes a while to get used to, dont try to get too low as things get bad really quick.