care to hazard a guess what this might be turned into?

VAP · 04-03-2003, 01:54 PM

Hint: It's 3" O.D. 6061 series seamless aluminum tubing with a .049" wall thickness and 3 ft long and I have 7 more just like it.

Mr D: you already know so don't even think about it;-)

rtking · 04-03-2003, 02:03 PM

VAP · 04-03-2003, 02:28 PM

Turns out 6061 aluminum doesn't like to be cold-swaged to this extreme. I split 4 of em right down the side before I gave up trying to get the angle I wanted. And since so much hand holding of the part is neccsary I cant do em hot either. So I annealed em with a torch to about 800-900 degrees and let em cool on their own without quenching. That seems to work just fine, making them far more maleable.

You can see how the oxy/acet torch soots em up and heat discolors em with the O2 turned off when torch annealing. I'll fire up my plating oven later when I have a number of them cut to size so I can do 30-40 at a time.

Next I'll true em up on the lathe and get the exact inlet contour and flat base then de-burr and high-speed finish them on the lathe with rouge until they appear like liquid mercury and everyone should be pleased with the fit/finish.

Dead · 04-03-2003, 02:46 PM

rtking · 04-03-2003, 03:14 PM

... that you were going to put eight 3" tailpipes on your A4! I figured you'd look like Super-Rice or a mini-scale Patriot missile launcher! ;-)

Bob K.

VAP · 04-03-2003, 03:26 PM

that had a reinforced breech area 6" thick tapered to a 2.5" barrel. Thing launched potatoes over a mile at 3270 feet per second at a 4,700 psi compressed air charge. Was a fun project but the air pressures are a little scarey to deal with. And I still lost the distance contest by over 700 meters. Win some lose some. The secret is good ammo. Most spuds disintegrate 18" outta the muzzle.

VAP · 04-03-2003, 03:29 PM

Outside lightly polished while the business side is polished to a high lustre.

rtking · 04-03-2003, 03:50 PM

rtking · 04-03-2003, 03:51 PM

Dead · 04-03-2003, 04:58 PM

04-03-2003, 02:03 PM	#2
rtking Junior Member Garage is empty, add now Join Date: Sep 2001 Posts: 877	You're making a whole slew of Velocity Stacks for us poor souls w/o one?

04-03-2003, 02:28 PM	#3
VAP AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,990	Bingo!! But it aint turning out to be any picnic... Turns out 6061 aluminum doesn't like to be cold-swaged to this extreme. I split 4 of em right down the side before I gave up trying to get the angle I wanted. And since so much hand holding of the part is neccsary I cant do em hot either. So I annealed em with a torch to about 800-900 degrees and let em cool on their own without quenching. That seems to work just fine, making them far more maleable. You can see how the oxy/acet torch soots em up and heat discolors em with the O2 turned off when torch annealing. I'll fire up my plating oven later when I have a number of them cut to size so I can do 30-40 at a time. Next I'll true em up on the lathe and get the exact inlet contour and flat base then de-burr and high-speed finish them on the lathe with rouge until they appear like liquid mercury and everyone should be pleased with the fit/finish.

04-03-2003, 02:46 PM	#4
Dead Elder Member Garage is empty, add now Join Date: Jul 2000 Posts: 23,171	Gutter down spout

04-03-2003, 03:14 PM	#5
rtking Junior Member Garage is empty, add now Join Date: Sep 2001 Posts: 877	Thank goodness! My next guess was... ... that you were going to put eight 3" tailpipes on your A4! I figured you'd look like Super-Rice or a mini-scale Patriot missile launcher! ;-) Bob K.

04-03-2003, 03:26 PM	#6
VAP AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,990	Close... I actually made a potato gun last summer out of some aluminum that had a reinforced breech area 6" thick tapered to a 2.5" barrel. Thing launched potatoes over a mile at 3270 feet per second at a 4,700 psi compressed air charge. Was a fun project but the air pressures are a little scarey to deal with. And I still lost the distance contest by over 700 meters. Win some lose some. The secret is good ammo. Most spuds disintegrate 18" outta the muzzle.

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04-03-2003, 03:29 PM	#7
VAP AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,990	Pic 3: Polished downspout Outside lightly polished while the business side is polished to a high lustre.

04-03-2003, 03:50 PM	#8
rtking Junior Member Garage is empty, add now Join Date: Sep 2001 Posts: 877	BUWAHAHAHA!!! You should apply to be on "Monster Garage" w/Jesse James!

04-03-2003, 03:51 PM	#9
rtking Junior Member Garage is empty, add now Join Date: Sep 2001 Posts: 877	I want!!!! How much?

04-03-2003, 04:58 PM	#10
Dead Elder Member Garage is empty, add now Join Date: Jul 2000 Posts: 23,171	Kinda short.

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04-03-2003, 04:58 PM
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