I'm scratch building my 1500 as I had a lot of the material already available to me. However, I'm having difficulty locating the 6061-T6 Aluminum channel (3/4 x 3/4 x 1/8 x 6") called for when building the empennage ( RS-302, Page 8 ). I can find it in 6063-T52 from Wicks and Aircraft Spruce, but not in 6061-T6. I believe the 6061 is a stronger alloy, so I'm reluctant to make the substitution. What has everyone else used if scratch building?
6063-T52 is more than adequate for the tail strut fittings. The tail loads are relatively small. While 6063-t52 is about half the strength of 6061-t6, a fitting made from 6061-t6 would be about 8 times stronger than necessary so the 6063-t52 fitting would be only four times stronger than necessary or about double the bearing strength of the spar wood to which they are bolted. My 1100R plans specify either alloy.
6063-T52 is more than adequate for the tail strut fittings. The tail loads are relatively small. While 6063-t52 is about half the strength of 6061-t6, a fitting made from 6061-t6 would be about 8 times stronger than necessary so the 6063-t52 fitting would be only four times stronger than necessary or about double the bearing strength of the spar wood to which they are bolted. My 1100R plans specify either alloy.
Hello Bob, Can you tell me if the 6063-t52 is also appropriate for the wing carry through channel (1”x1”x1/8”)? Because I am building a himax and it is almost impossible to find this channel, or even square tube, in aluminum T6-6061. Thank you!
Hello Bob, Can you tell me if the 6063-t52 is also appropriate for the wing carry through channel (1”x1”x1/8”)? Because I am building a himax and it is almost impossible to find this channel, or even square tube, in aluminum T6-6061. Thank you!
For that one I would just use a steel tube. Yeah, it might be overkill, but why not?
Hello Bob, Can you tell me if the 6063-t52 is also appropriate for the wing carry through channel (1”x1”x1/8”)? Because I am building a himax and it is almost impossible to find this channel, or even square tube, in aluminum T6-6061. Thank you!
I emailed david at team about using 6063 for the wing carry through channel and he said it would be fine. On the himax that channel is glued to large wood blocks and the wing spar pin bolts pass through the channel and the wood so the wood is taking some of the compression loads there. More importantly is what your wing strut attach brackets are made of at the bottom of the fuselage, team put out a ad that these should be made of a solid chunk of 6061 t6 aluminum so thats what I did.
Hello, This is the 6062 T52, which has half the strength of the 6061-t6, so: better think twice before using this diferent alloy. I really don’t understand why aircraft spruce sells this weak alloy channel instead of 6061-t6
Hello Bob, Can you tell me if the 6063-t52 is also appropriate for the wing carry through channel (1”x1”x1/8”)? Because I am building a himax and it is almost impossible to find this channel, or even square tube, in aluminum T6-6061. Thank you!
My R1100 plans specify either alloy for the carry-through as well. The Team stress analysis quotes the bearing strength for 6061t6 as 69 kpsi. If 6063t52 is 60% as strong, the bearing strength should be 41 kpsi. The bearing area is .0625 in2 and the load is 2200 lbs in compression so the stress is 35 kpsi.
My R1100 plans specify either alloy for the carry-through as well. The Team stress analysis quotes the bearing strength for 6061t6 as 69 kpsi. If 6063t52 is 60% as strong, the bearing strength should be 41 kpsi. The bearing area is .0625 in2 and the load is 2200 lbs in compression so the stress is 35 kpsi.
I took a look at the 1030R manual, which complies with far 103 (and probably the lightest minimax project) and the RS300 channel is in alloy 6061. I am curious where you found that this channel can be made with 6063-t52 alloy. Best regards Raphael
I took a look at the 1030R manual, which complies with far 103 (and probably the lightest minimax project) and the RS300 channel is in alloy 6061. I am curious where you found that this channel can be made with 6063-t52 alloy. Best regards Raphael
My R1100 plans of 1994. The R1100 has a design gross weight of 560 lbs, the same as the R1500 I believe. If you wanted to increase the bearing strength of the carry-through pin hole, you could rivet a pair of aluminum bars to the insides of the channel flanges thus increasing the bearing area. A bit fiddly but lighter than going to steel for the whole carry-through.
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