Tube calculator/

[abendx]

[url=https://www.roguefab.com/calculator.php]Tube Calculator[/url].

Some guy on JKO posted this "software" they produced to calculate tube requirements.

Looks to be a very ice thing to have in your tool belt of you are fabricating.

Joshy... please have a look.

[Lake_v2]

Saw that on pirate last night havent looked at actual program yet but did see coments fron an engineer that stated it is nowhere near actual fea specs or analysis...

Wonder if there is any more comments that are constructive yet

Hopefully it turns out as good as triaged's link calculator

[robnoxious1]

Didnt mess with it too much but some of their material specs look off at a glance. For A53 pipe anyways.

[abendx]

Well.... that is disappointing.

[robnoxious1]

[quote="abendx"]Well.... that is disappointing.[/quote]

Might still be usable if you get the actual yields of the material you intend to use and compensate. Your best bet would be to find someone who has solidworks and have them analyze your design.

Rob

[RogueFab]

[quote="Lake_v2"]Saw that on pirate last night havent looked at actual program yet but did see coments fron an engineer that stated it is nowhere near actual fea specs or analysis...

Wonder if there is any more comments that are constructive yet

Hopefully it turns out as good as triaged's link calculator[/quote]

The guy who made it is also an engineer (me). And it isn't meant to be an FEA package. It is a "tube calculator". It calculates stress in single tubes. Nothing more.


[quote="robnoxious1"]Didnt mess with it too much but some of their material specs look off at a glance. For A53 pipe anyways.[/quote]

This is directly from ASTM A53 1999. Type F or E, Grade A. Grade B is slightly higher, but that is not a safe assumption to program in for the general public. Our material data in the calculator, results, and table EXACTLY match ASTM specs.

[img]http://i7.photobucket.com/albums/y256/turbocabby/A53_zps68831597.jpg[/img]

[Uncle Cracker]

hey sunshine,,,,,, don't make it harder then it already is

you planning on competing somewhere?

[abendx]

[quote="Uncle Cracker"]hey sunshine,,,,,, don't make it harder then it already is

you planning on competing somewhere?[/quote]

Only with you and Josh.

[Uncle Cracker]

hurry, hurry, hurry

i'm ready to go

[Desert Dog]

[quote="Uncle Cracker"]hey sunshine,,,,,, don't make it harder then it already is [/quote]
Yep, 99.9999% of buggies are made with no tubing calculator. Just use it, and if you come up short, buy more tubing. You don't plan on doing the whole thing in one day.

[robnoxious1]

[quote="RogueFab"][quote="Lake_v2"]Saw that on pirate last night havent looked at actual program yet but did see coments fron an engineer that stated it is nowhere near actual fea specs or analysis...

Wonder if there is any more comments that are constructive yet

Hopefully it turns out as good as triaged's link calculator[/quote]

The guy who made it is also an engineer (me). And it isn't meant to be an FEA package. It is a "tube calculator". It calculates stress in single tubes. Nothing more.


[quote="robnoxious1"]Didnt mess with it too much but some of their material specs look off at a glance. For A53 pipe anyways.[/quote]

This is directly from ASTM A53 1999. Type F or E, Grade A. Grade B is slightly higher, but that is not a safe assumption to program in for the general public. Our material data in the calculator, results, and table EXACTLY match ASTM specs.

[img]http://i7.photobucket.com/albums/y256/turbocabby/A53_zps68831597.jpg[/img][/quote]


Might want to fix this table then:
[attachment=0]tablex.jpg[/attachment]

[RogueFab]

[quote="robnoxious1"]
Might want to fix this table then:
[/quote]

Oh Damn. Good Catch. Updated the table and added the missing citation (ASTM) on 1/3/2013 at 1pm.

Thank you for bringing it to our attention. Sorry we were too thick to get it on the first pass

[robnoxious1]

[quote="RogueFab"][quote="robnoxious1"]
Might want to fix this table then:
[/quote]

Oh Damn. Good Catch. Updated the table and added the missing citation (ASTM) on 1/3/2013 at 1pm.

Thank you for bringing it to our attention. Sorry we were too thick to get it on the first pass [/quote]

LOL I work in an engineering office too, not uncommon for my drawings to come back from a checker looking like theyve been bled on.

[Loki XJ]

the oilfield engineers out here are kind of useless... their measurements are typically used as rough estimates, just like the other day, they didnt account for the roll of a 90 and because we followed their measurements assuming because their engineers that they were accurate and they were actually off by a little over 8" and that's kind of a big mistake on a 10" pipe when its 20 feet over your head and it is a time sensitive job

[robnoxious1]

[quote="Mikeys_cougar"]the oilfield engineers out here are kind of useless... their measurements are typically used as rough estimates, just like the other day, they didnt account for the roll of a 90 and because we followed their measurements assuming because their engineers that they were accurate and they were actually off by a little over 8" and that's kind of a big mistake on a 10" pipe when its 20 feet over your head and it is a time sensitive job[/quote]

Time to get out the pipe stretcher .

[RogueFab]

We just added descriptions/explanations for every material in the calculator. We put this information near the end of the page, so readers can gain an understanding for the materials in the calculator if they are not familiar with them already. Here is an example; this is what we used to describe 1020 HREW tube:

HREW 1020: Hot Rolled Electric Welded tube, 1020 steel alloy. This tube is formed through rollers from flat strips into round tubes and welded into a solid piece. The outside is smooth, and the inside may have slight flashing. A seam is visible, usually a blue/grey stripe. 1000 series steels are known as plain carbon steels, and are limited to 1% manganese content maximum. The last two digits are the nominal carbon content in hundredths of a percent. 1020 has 0.20% carbon content, and 0.45% manganese. It is very weldable and forms/bends easily.

Check out the calculator for the rest of them, it would be a long post to copy and paste them all here.