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CA-AB Sched 40 Aluminium Pipe

Alberta
Type
Supplies
DPittman said:
Rats. Thanks for looking tho.
Click to expand...

Just a thought…….

After you weld the 6061-T6 it will lose it’s temper/yield strength so that might point you toward where you could acquire something more readily formed like some 5052 plate which is common in H32 temper and weldable.

You would have to check the eventual (theoretical) yield strength of the 5052 once welded to see if it’s enough for your purpose.

From flat you could form it to the shape you need and go ahead and weld the channel to it to get the bracket you want.

D 😎
 
Tecnico said:
Just a thought…….

After you weld the 6061-T6 it will lose it’s temper/yield strength so that might point you toward where you could acquire something more readily formed like some 5052 plate which is common in H32 temper and weldable.

You would have to check the eventual (theoretical) yield strength of the 5052 once welded to see if it’s enough for your purpose.

From flat you could form it to the shape you need and go ahead and weld the channel to it to get the bracket you want.

D 😎
Click to expand...
Thanks for the advice.
If it is not already apparent...I am totally "flying by the seat of my pants" on this modification. I don't know exactly what is needed in terms of strength and design. I am opting to use heavier material than what is possibly needed to cover up some of those inadequacies. I do however have to keep weight in mind.
 
DPittman said:
Thanks for the advice.
If it is not already apparent...I am totally "flying by the seat of my pants" on this modification.
Click to expand...
OK, then you might not mind me opening my trap. I can't say that I have seen aluminum welding used in such an application, rivets, bolts, screws etc yes, welding no. Even on floats they prefer to drill 10,000 holes in them. Now my memory is not as good as it was, and it never was very good in the first place, but I got my CPL 46 years ago so I have seen a fair few a/c.
 
jorogi said:
OK, then you might not mind me opening my trap. I can't say that I have seen aluminum welding used in such an application, rivets, bolts, screws etc yes, welding no. Even on floats they prefer to drill 10,000 holes in them. Now my memory is not as good as it was, and it never was very good in the first place, but I got my CPL 46 years ago so I have seen a fair few a/c.
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Yes all comments welcome. Welding was the only way I figured I could attach the components I figured I would be working with. I am still debating all options I can think of.
 
Just out of curiosity, what does the OEM provide for the spring mount?

I’m assuming you’re using a different spring hence the redesigned mount but their bracket might bring out some (hopefully) useful brainstorming?

D 😎
 
Tecnico said:
Just out of curiosity, what does the OEM provide for the spring mount?

I’m assuming you’re using a different spring hence the redesigned mount but their bracket might bring out some (hopefully) useful brainstorming?

D 😎
Click to expand...
OEM setup was completely different. Only suspension it provided was thru a pneumatic tire.
20261114_140640.jpg
 
jorogi said:
The answer is so simple and it's staring you right in the face. Floats.
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Well believe it or not they do put floats on these things. I don't exactly live in the land of lakes so that's not going to happen while I own it. Besides, I'm afraid of any more water than can fit in a bath tub.
 
Well damn you Mr DPittman, you woke me up at 03:00 h with plan B simply because you lack enough sense of adventure to embrace my brilliant suggestion of floats.

Guessing at sizes here but you have mentioned 8"-12" (haven't we all at some point ?) I'll use my idea of size here and as you live in Ag ville I'd suggest you'd probably John Deere things in the design department (NOI). Tail wheel spring of 1" x 1/4" x 7" for the fuselage mounting portion plus whatever is necessary for the tail wheel portion. Three 1/4" holes on the center line of the spring, one 1" from the end, the third hole 6" from the end and the third midway in between (I'm sleep deprived so I won't do the math). Matching holes in the bottom of the fuselage tube. From a 2" round bar of aluminum, bore a 1/4" hole down the center and using 4" hole saw cut a convex "washer" off the bar. Then part off a concave "washer". Rinse and repeat 2 more times. Use the washer pairs to sandwich the fuselage tube. Fender washers under the bolt heads inside the fuselage and nylocs nuts and washers under the spring.
 
jorogi said:
Well damn you Mr DPittman, you woke me up at 03:00 h with plan B simply because you lack enough sense of adventure to embrace my brilliant suggestion of floats.

Guessing at sizes here but you have mentioned 8"-12" (haven't we all at some point ?) I'll use my idea of size here and as you live in Ag ville I'd suggest you'd probably John Deere things in the design department (NOI). Tail wheel spring of 1" x 1/4" x 7" for the fuselage mounting portion plus whatever is necessary for the tail wheel portion. Three 1/4" holes on the center line of the spring, one 1" from the end, the third hole 6" from the end and the third midway in between (I'm sleep deprived so I won't do the math). Matching holes in the bottom of the fuselage tube. From a 2" round bar of aluminum, bore a 1/4" hole down the center and using 4" hole saw cut a convex "washer" off the bar. Then part off a concave "washer". Rinse and repeat 2 more times. Use the washer pairs to sandwich the fuselage tube. Fender washers under the bolt heads inside the fuselage and nylocs nuts and washers under the spring.
Click to expand...
Sorry to cause you unrest! But thank you for your input. I have to come back to this suggestion and think about it. Right now I have other priorities but I do appreciate your effort.🙂
 
i cant imagine how under powered one of those chinook's are on floats. I know its done, but boy it must be firewalled the whole time.

I believe it was a chinook +2 on floats that a guy in Manitoba crashed and died in recently (last year or two), stall spin accident iirc
 
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