Need help reading a Bill of materials

[Dan]

Looking at a bill of materials for a motorcycle frame and am unsure of some of the info. An example:

TS., (a lower case o with a slash goin diagnonal across it) 2 3/16 x 7 3/8 x 3/16w 1026 DOM.

-What does TS mean? (tubular steel???)
-What does the symbol before 2 3/16 mean??
-1026 DOM = 1026 drawn over mandrel???

Thanks-

[MrHavard]

T.S. = Tube Steel
O with a slah = Diameter
dom im not sure about but the 3/16 should be the thickness.

[Unkl Ian]

[ QUOTE ]
(a lower case o with a slash goin diagnonal across it)

[/ QUOTE ]

That's a European convention,used in geometric tolerancing,it means Diameter.

1026 is the alloy. 1010 is mild steel,1026 would have a little extra Carbon.
4130 or 4140 would be Chrome Moly,you don't want that.

DOM means Drawn Over Mandrel. Also known as Seamless.


Sounds like your making a steering head.
If your only doing one,and you have access to the equipment,
you could carve it out of a solid if you can't find the exact size tube at a reasonable price.
You can also buy them premachined.

[Unkl Ian]

Also check out: http://autos.groups.yahoo.com/group/bikebuilders/

[Dan]

It is in fact a steering head, I thought maybe that symbol meant diameter but the 2 3/16 threw me off. Do they sell 2 3/16 diamter tubing or would I have to have one machined like Unkl Ian said. If I was to use this frame for a mini-bike sorta deal (3-5 horse engine) would I have to use 1026 DOM or could I get away with just regular seamed tubing...Thanks for excellent responses-

Oh yeah, the back bone calls for 1 1/4 diameter tubing, again, can I purchase that size??

[Hotroddder]

FYI... the slash through the circle indicates round tubing..........

[Dan]

whats A-36 signify in terms of plate ????

[38Chevy454]

Dan, welded (seamed) tubing will be fine for a mini-bike. Like the others said, the drawing nomenclature has been explained. You do not need to use the medium carbon grade, the low carbon 1010 or similar is just fine.

FYI, on my mini-bike I used 3/4 inch schedule 40 pipe (approx 1 inch welded tubing) for the frame, and a bicycle neck for the steering head. It was much thinner than 3/16 inch. The neck and tubing were each about 1/8 or slightly less wall thickness. I would guess that 1 inch schedule 40 would be close to 1.25 inch OD.

A-36 is a reference to the specification for the plate, which is ASTM A-36. You can use just about any steel, I guess that is for the engine mounting plate or frame gussets? I would just use whatever cold rolled that your local steel supplier has, it will work just fine.

[Unkl Ian]

A-36 ?


No idea.
Mart would probably know.

[Paul]

[ QUOTE ]
whats A-36 signify in terms of plate ????

[/ QUOTE ]

that mean collumn A, meal number uh 36,

is for Happy Family Plate in Chinese Resturant http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif