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Posted by stryped on April 26, 2008, 8:43 am
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Is there a way to identify the pundage rating on one? I am going to an
auction and saw they have one with the bubs and everythign on it. The
spring centers are 6 feet. But how can I tell the poundage and if it
is designed for springs over/under the axle?
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Posted by Tim Wescott on April 26, 2008, 11:50 am
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On Sat, 26 Apr 2008 05:43:56 -0700, stryped wrote:
> Is there a way to identify the pundage rating on one? I am going to an
> auction and saw they have one with the bubs and everythign on it. The
> spring centers are 6 feet. But how can I tell the poundage and if it is
> designed for springs over/under the axle?
You could make a guess at the loading by looking at the construction and
bearings, I suppose. The wheel mounting would also give a general clue.
If it's a trailer axle the springs going over/under probably don't
matter, unless you end up with hydraulic brakes dripping fluid everywhere.
--
Tim Wescott
Control systems and communications consulting
http://www.wescottdesign.com
Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes, http://www.wescottdesign.com/actfes/actfes.html
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Posted by stryped on April 28, 2008, 8:10 am
Please log in for more thread options > On Sat, 26 Apr 2008 05:43:56 -0700, stryped wrote:
> > Is there a way to identify the pundage rating on one? I am going to an
> > auction and saw they have one with the bubs and everythign on it. The
> > spring centers are 6 feet. But how can I tell the poundage and if it is
> > designed for springs over/under the axle?
>
> You could make a guess at the loading by looking at the construction and
> bearings, I suppose. =A0The wheel mounting would also give a general clue.=
>
> If it's a trailer axle the springs going over/under probably don't
> matter, unless you end up with hydraulic brakes dripping fluid everywhere.=
>
> --
> Tim Wescott
> Control systems and communications consultinghttp://www.wescottdesign.com
>
> Need to learn how to apply control theory in your embedded system?
> "Applied Control Theory for Embedded Systems" by Tim Wescott
> Elsevier/Newnes,http://www.wescottdesign.com/actfes/actfes.html
I thought that an axle with springs under it would make the ride
height of the trailer lower? Wouldn't it?
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Posted by Bruce L. Bergman on April 26, 2008, 1:16 pm
Please log in for more thread options On Sat, 26 Apr 2008 05:43:56 -0700 (PDT), stryped
>Is there a way to identify the pundage rating on one? I am going to an
>auction and saw they have one with the bubs and everythign on it. The
>spring centers are 6 feet. But how can I tell the poundage and if it
>is designed for springs over/under the axle?
If it's a mass produced axle it will have a tag with name and model.
Perhaps even a production date and serial number, too. Look at the
ends near the spring perches, sometimes it's a little 1"X2" stamped
steel tag held on with baling wire, then painted black with the rest
of the axle.
For design clues, get a copy of the Dexter Axle catalog, or another
mass producer. Once you know the design details you can identify
them, even if someone else made the one you are investigating. It's
not rocket science, they all crib engineering cues off each other.
If it's a 5-lug or 6-lug hub it will be a 2000# or 3500# most
likely. If it's a 8-lug hub it could be 3500# to 6000#. The hubs and
bearings used will tell the tale.
I can't guess at more than that - do your homework and follow your
gut instincts. And know what the axle is supposed to cost new,
because auctions sometimes bid stuff up to ridiculous prices for the
thrill - and after the gavel drops and you won, you realize you could
have ordered two new axles (with the spring kits and hangers and a
warranty) for what you paid for one AS-IS. (Too late.)
When the price approaches ~75% of new, STOP BIDDING - let some other
fool who doesn't know what it's worth (and where to buy it any day)
get suckered by the auctioneer.
--<< Bruce >>--
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Posted by stryped on April 28, 2008, 8:13 am
Please log in for more thread options On Apr 26, 12:16=A0pm, Bruce L. Bergman
> On Sat, 26 Apr 2008 05:43:56 -0700 (PDT), stryped
>
> >Is there a way to identify the pundage rating on one? I am going to an
> >auction and saw they have one with the bubs and everythign on it. The
> >spring centers are 6 feet. But how can I tell the poundage and if it
> >is designed for springs over/under the axle?
>
> =A0 If it's a mass produced axle it will have a tag with name and model.
> Perhaps even a production date and serial number, too. =A0Look at the
> ends near the spring perches, sometimes it's a little 1"X2" stamped
> steel tag held on with baling wire, then painted black with the rest
> of the axle.
>
> =A0 For design clues, get a copy of the Dexter Axle catalog, or another
> mass producer. =A0Once you know the design details you can identify
> them, even if someone else made the one you are investigating. =A0It's
> not rocket science, they all crib engineering cues off each other.
>
> =A0 If it's a 5-lug or 6-lug hub it will be a 2000# or 3500# most
> likely. =A0If it's a 8-lug hub it could be 3500# to 6000#. =A0The hubs and=
> bearings used will tell the tale.
>
> =A0 I can't guess at more than that - do your homework and follow your
> gut instincts. =A0And know what the axle is supposed to cost new,
> because auctions sometimes bid stuff up to ridiculous prices for the
> thrill - and after the gavel drops and you won, you realize you could
> have ordered two new axles (with the spring kits and hangers and a
> warranty) for what you paid for one AS-IS. =A0(Too late.)
>
> =A0 When the price approaches ~75% of new, STOP BIDDING - let some other
> fool who doesn't know what it's worth (and where to buy it any day)
> get suckered by the auctioneer.
>
> =A0 =A0 =A0 --<< Bruce >>--
Update: I did not buy it for 2 reasons: 1. I found out the axle was on
a trailer hauling a pontoon boat that had been rear ended, 2. The
price went to 70 bucks. I can get a new axle locally with hubs and
springs for 100.
It was a disappointing day at the auction. Did not get the disc for my
8n. There was a dual axle trailer there that went cheap enough and I
almost bid on it but I chickened out. It went for only 375, but was
made with trailer axles which I dont mind but the thing was 2inch
square tubing and looked like it was warped or twisted. I guess I just
chickened out.
So I cam ehome with nothing:(
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> auction and saw they have one with the bubs and everythign on it. The
> spring centers are 6 feet. But how can I tell the poundage and if it is
> designed for springs over/under the axle?