If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Gauge of tubing???
I"m familiar with the use of 'gauge' when describing sheetmetal.
I'm looking at 43.13 where it discusses welded patch repair. It says make the patch out of material one gauge greater than that of the base metal. So I measure the base metal tubing (.035), go to the Inet and look up a gauge chart and find that .035 lies between two gauge measurements. And of course tubing suppliers talk in decimals, not gauge. Faced with this difference in units of measurement, what approach do you take? - Mike |
#2
|
|||
|
|||
Gauge of tubing???
Michael Horowitz wrote:
I"m familiar with the use of 'gauge' when describing sheetmetal. I'm looking at 43.13 where it discusses welded patch repair. It says make the patch out of material one gauge greater than that of the base metal. So I measure the base metal tubing (.035), go to the Inet and look up a gauge chart and find that .035 lies between two gauge measurements. And of course tubing suppliers talk in decimals, not gauge. Faced with this difference in units of measurement, what approach do you take? - Mike I can't answer your question for certain (I'm not qualified). But- I want to point out sheet metal gauge depends on the material (steel, aluminum, etc). In other words, there are different charts for different kinds of sheet metal (which is entirely different from wire gauge sizes). I figure you know this, not everyone does. The Aircraft Spruce catalog has this material referenced at the front of the metal section. AC43.13 doesn't seem to have this info. Anyway, I know what I'd do- to be conservative I'd pick the larger measurement and go up one size higher than that. Of course that would add even more weight |
#3
|
|||
|
|||
Gauge of tubing???
Michael Horowitz wrote: Faced with this difference in units of measurement, what approach do you take? - Mike --------------------------------------------------------------------------------------- You fall back on the 'accepted practices' rule. 'Gauge' as applied to SEAMLESS TUBING was usually defined as follows: 11ga = .125" wall thickness 13ga = .093" 16ga = .063" 18ga = .047" 20ga = .035" 22ga = .028" As applied to your situation, you would select tubing having a wall thickness of .047" for the repair. ------------------------------------------------------------------------- The table offered above does NOT agree with various gauge-vs-thickness charts in several particulars; some list 12ga as equal to .093 and 18ga is often shown as .050. Unfortunetely, many historic definitions of seamless tubing pre-date the availability of SAE 4130 and cite diameter & wall for MILD STEEL tubing that is no longer available, such as half-inch x .0375" wall (ie, '20 ga' according to a seamless tubing manufacturer of that era). -R.S.Hoover |
#4
|
|||
|
|||
Gauge of tubing???
|
#5
|
|||
|
|||
Gauge of tubing???
|
#7
|
|||
|
|||
Gauge of tubing???
Stealth Pilot wrote:
On Sun, 04 Jun 2006 22:52:50 GMT, cavelamb wrote: Michael Horowitz wrote: On 4 Jun 2006 14:13:29 -0700, wrote: Michael Horowitz wrote: Faced with this difference in units of measurement, what approach do you take? - Mike --------------------------------------------------------------------------------------- You fall back on the 'accepted practices' rule. 'Gauge' as applied to SEAMLESS TUBING was usually defined as follows: 11ga = .125" wall thickness 13ga = .093" 16ga = .063" 18ga = .047" 20ga = .035" 22ga = .028" As applied to your situation, you would select tubing having a wall thickness of .047" for the repair. ------------------------------------------------------------------------- The table offered above does NOT agree with various gauge-vs-thickness charts in several particulars; some list 12ga as equal to .093 and 18ga is often shown as .050. Unfortunetely, many historic definitions of seamless tubing pre-date the availability of SAE 4130 and cite diameter & wall for MILD STEEL tubing that is no longer available, such as half-inch x .0375" wall (ie, '20 ga' according to a seamless tubing manufacturer of that era). -R.S.Hoover ---------- Just what I needed - Thanks - Mike Just for the record, that's Thanks, VeeDubber... no it is thanks - mike mike was the guy saying thanks. perfectly plain to me. ....and no doubt veedubber and mike. if you do a search and replace to put a newline in place of the hyphen I'm sure the penny will drop for you as well. Stealth Pilot :-) Oh **** off. |
#8
|
|||
|
|||
Gauge of tubing???
wrote: Michael Horowitz wrote: Faced with this difference in units of measurement, what approach do you take? - Mike --------------------------------------------------------------------------------------- You fall back on the 'accepted practices' rule. 'Gauge' as applied to SEAMLESS TUBING was usually defined as follows: 11ga = .125" wall thickness 13ga = .093" 16ga = .063" 18ga = .047" 20ga = .035" 22ga = .028" As applied to your situation, you would select tubing having a wall thickness of .047" for the repair. ------------------------------------------------------------------------- The table offered above does NOT agree with various gauge-vs-thickness charts in several particulars; some list 12ga as equal to .093 and 18ga is often shown as .050. Unfortunetely, many historic definitions of seamless tubing pre-date the availability of SAE 4130 and cite diameter & wall for MILD STEEL tubing that is no longer available, such as half-inch x .0375" wall (ie, '20 ga' according to a seamless tubing manufacturer of that era). -R.S.Hoover There are a number of different gauge systems and they have differing ideas as to thickness vs. gauge number. Six of them he http://www.constructionwork.com/reso...17bc2a4aac71b0 Aluminum gauges: http://www.engineersedge.com/gauge.htm Dan |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Oil Pressure Gauge Troubleshooting | Kyle Boatright | Home Built | 10 | October 19th 05 04:04 AM |
Cherokee Fuel Gauge | Mike Spera | Owning | 6 | July 15th 05 05:30 AM |
Any sources of thin walled 4130 tubing in northern CA? | mike | Home Built | 3 | February 6th 05 03:20 PM |
Carb Temperature Gauge | fly_the_skies | Home Built | 6 | January 14th 04 03:32 PM |
Regarding Oil Temp Gauge and Line Repairable | rkane33 | Owning | 0 | September 14th 03 09:54 PM |