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Science Forum Index » Engineering - Joining (Welding) Forum » Interesting item I found in trailer parts catalog
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| John L. Weatherly |
 Posted: Mon Apr 28, 2008 8:12 am |
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glyford@gmail.com wrote:
Quote: Why didn't I, or why was I worried about it?
Why were you worried. I've heard of a lot of people flipping the head
over to get the height (and center of gravity for easier trailering)
down. If the trailer is stable and you don't need the height to get
under a door or whatever, why worry?
I could see, though, if you were worried about the forces on the
knuckles of a regular J-head. But even then, I think it's mostly a
judgement call thing. Some people support the head with a piece of
wood between the head and table. Others say that puts too much
pressure on the table jack mechanism.
Was out driving one day and saw a flatbed truck with a 1/2 dozen J-
heads on it. All had the heads on, upright, unsupported.
--Glenn Lyford
Damn. I was feeling like a cavalier badass by flouting convention, too.
Oh, well, we got home safely. I was suprise that there wasn't the
slightest bit of settling/relaxing of the rigging.
This is the first time I have moved machine tools with my trailer. Forklift
to load and forklift to unload. NOT like the good old days of gantry and
pickup truck. This is getting too easy...
--
John L. Weatherly
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| Gunner Asch |
| Posted: Mon Apr 28, 2008 1:38 pm |
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On Mon, 28 Apr 2008 09:12:02 -0400, "John L. Weatherly"
<johnnytorchXXX@XXXcomcast.net> wrote:
Quote: glyford@gmail.com wrote:
Why didn't I, or why was I worried about it?
Why were you worried. I've heard of a lot of people flipping the head
over to get the height (and center of gravity for easier trailering)
down. If the trailer is stable and you don't need the height to get
under a door or whatever, why worry?
I could see, though, if you were worried about the forces on the
knuckles of a regular J-head. But even then, I think it's mostly a
judgement call thing. Some people support the head with a piece of
wood between the head and table. Others say that puts too much
pressure on the table jack mechanism.
Was out driving one day and saw a flatbed truck with a 1/2 dozen J-
heads on it. All had the heads on, upright, unsupported.
--Glenn Lyford
Damn. I was feeling like a cavalier badass by flouting convention, too.
Oh, well, we got home safely. I was suprise that there wasn't the
slightest bit of settling/relaxing of the rigging.
This is the first time I have moved machine tools with my trailer. Forklift
to load and forklift to unload. NOT like the good old days of gantry and
pickup truck. This is getting too easy...
Always put a block of wood under the knee. and lock the knee.
The possiblity exists that the bouncing will blow out the acme nut
holding up the knee, particularly if its an older machine with a well
worn knee acme screw and nut.
I saw this happen one time. Drove the knee screw through the top of
the trailer deck. Very rare, but a chunk of wood is cheap.
Gunner
Political Correctness is a doctrine fostered by a delusional,
illogical liberal minority, and rabidly promoted by an
unscrupulous mainstream media, which holds forth the
proposition that it is entirely possible to pick up a turd by the clean end. |
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| John L. Weatherly |
| Posted: Tue Apr 29, 2008 8:07 am |
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Gunner Asch wrote:
Quote: The possiblity exists that the bouncing will blow out the acme nut
holding up the knee, particularly if its an older machine with a well
worn knee acme screw and nut.
I saw this happen one time. Drove the knee screw through the top of
the trailer deck. Very rare, but a chunk of wood is cheap.
Yikes! I'll do that next time, for sure. Unloading yesterday was
uneventful, but the shaper is much heavier than I had estimated. I guessed
2500#, but after feeling the load on the lift, I would say 4000# easy.
They stacked that little machine tight!
--
John L. Weatherly
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