Author Topic: Brass tubing with 1/16" ID  (Read 481 times)

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drgw0579

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Brass tubing with 1/16" ID
« on: January 07, 2017, 06:23:20 PM »
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I need to make a sleeve for a locomotive driveshaft, and it appears I cam use a short piece of brass tubing with a 1/16" inside diameter.  While K&S Metals lists their tubing on their website, they don't show what the ID is.  Does anyone have a selection of brass tubing they can look at and tell me what the OD might be that has a 1/16" ID or smaller ?  K&S tubing would be preferred as that is at my local Ace Hardware and probably at the local hobby shop when it opens later this month.

Bill Kepner

narrowminded

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Re: Brass tubing with 1/16" ID
« Reply #1 on: January 07, 2017, 06:31:35 PM »
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Most if not all of their tube sizes have a .014" wall.  So diameter - .028" should get you there.   8)

Their website will list your sizes, I'm sure.
Mark G.

PGE_Modeller

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Re: Brass tubing with 1/16" ID
« Reply #2 on: January 07, 2017, 06:36:07 PM »
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Their 3/32" tubing shows the previously stated wall thickness of 0.014", so that gives an inside diameter of 0.06575 which is .00325 larger than 1/16".

narrowminded

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Re: Brass tubing with 1/16" ID
« Reply #3 on: January 07, 2017, 06:51:13 PM »
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Their 3/32" tubing shows the previously stated wall thickness of 0.014", so that gives an inside diameter of 0.06575 which is .00325 larger than 1/16".

And if you're sleeving flywheels or something of mass the .003" + clearance could introduce enough wobble to be troublesome.  As far as staying in place, Loctite would probably hold it just fine at that clearance even though it's a little beyond what they will promise.  Blue, and if that doesn't hold, red should.  Be very careful if you use Loctite so you don't loctite the bearing to the shaft.  A little grease right at the bearing to shaft transition can help as a barrier, then careful application of the loctite.
Mark G.

mmagliaro

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Re: Brass tubing with 1/16" ID
« Reply #4 on: January 07, 2017, 06:52:56 PM »
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Depending on how exactly close to 1/16" you need to be, and whether you'd be happier with a little over or a little under, another option is the K&S thin wall metric 2mm.

Outer diam 2mm (.078")  Wall thickness 0.225mm (.0088)
So the inner diameter is .0604  (vs 1/16 = .0625")  so it's about 2 thou under.

peteski

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Re: Brass tubing with 1/16" ID
« Reply #5 on: January 07, 2017, 07:05:07 PM »
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While K&S Metals lists their tubing on their website, they don't show what the ID is.  Does anyone have a selection of brass tubing they can look at and tell me what the OD might be that has a 1/16" ID or smaller ?  K&S tubing would be preferred as that is at my local Ace Hardware and probably at the local hobby shop when it opens later this month.

Bill Kepner

Bill, while your question has been answered, for the future here is an easy to remember way to figure out the ID of K&S (or any other brand) telescoping tubing. Since the smaller diameter tube fits fairly snugly in the next larger size, you can use the OD of the smaller tube as the ID of the next consecutive size tube.
--- Peteski de Snarkski

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garethashenden

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Re: Brass tubing with 1/16" ID
« Reply #6 on: January 07, 2017, 07:34:32 PM »
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And if you're sleeving flywheels or something of mass the .003" + clearance could introduce enough wobble to be troublesome.  As far as staying in place, Loctite would probably hold it just fine at that clearance even though it's a little beyond what they will promise.  Blue, and if that doesn't hold, red should.  Be very careful if you use Loctite so you don't loctite the bearing to the shaft.  A little grease right at the bearing to shaft transition can help as a barrier, then careful application of the loctite.

You really should use Loctite 609 rather than one of the thread lock Loctites. This is designed for shafts and bearings and other concentric things.