- Joined
- Jul 7, 2013
- Messages
- 82
- Reaction score
- 15
Hi
Not long ago tried to find out AN bolts for my Laser spar atach. From the maker of the wing (one of most respected acro builders in the US) was told I had originally a grade 9 bolt and replaced with that.
I have studied the specs and 125000 vs 180000 of a grade 9 for tensile strength. They are cheap, and when I installed my mechanics told me the marks on the bolt show it is good for shear strength. That is what it will work on the spar of a monoplane.
Someone told me that are harder and as that, if they fail they will snap, not bent as a AN. But as masive as an AN10 is and with 50% more strenght I know I will not bracke them...
Am I missing something? Are you guys using them in other parts or the complete plane build? For small AN3 and 4 would make sense to stay with AN but for biger aplications (gear, engine mount, wings, etc) it can be good to use grade 9?
Not long ago tried to find out AN bolts for my Laser spar atach. From the maker of the wing (one of most respected acro builders in the US) was told I had originally a grade 9 bolt and replaced with that.
I have studied the specs and 125000 vs 180000 of a grade 9 for tensile strength. They are cheap, and when I installed my mechanics told me the marks on the bolt show it is good for shear strength. That is what it will work on the spar of a monoplane.
Someone told me that are harder and as that, if they fail they will snap, not bent as a AN. But as masive as an AN10 is and with 50% more strenght I know I will not bracke them...
Am I missing something? Are you guys using them in other parts or the complete plane build? For small AN3 and 4 would make sense to stay with AN but for biger aplications (gear, engine mount, wings, etc) it can be good to use grade 9?
