[DeTomaso] Bay Area Guys!: Tubing bender for water pipes 1-3/8" ?????
Guido deTomaso
guido_detomaso at prodigy.net
Fri Oct 13 03:46:42 EDT 2017
Not sure what you're asking, and couldn't find the original post, but:
Looking inside thin-wall tube like exhaust pipe or metal water pipes, sometimes/usually I can see where a mandrel dragged along inside the pipe making scratches during the bending process. I've come to understand with the thinner wall tube a mandrel inside is necessary otherwise the tube collapses. Used to be "mandrel bent" meant "bent with an inside mandrel" but today has lost its meaning.
I tried Proto-Pipe on Lincoln but the guy promptly squashed the last of my 1.5 tube stash ( expensive, came from Tube Service in Milpitas ) and said "well, after 5 or 6 I could get this set up to not collapse the tube". This was using an inside mandrel, just not positioned exactly where it needed to be. Expect PP is long gone now.
Next ( bought more tube ) I tried a guy near the OSH near Bird, he did a much better job and honestly I don't remember if he used a mandrel or not. I do remember getting a parking ticket, and that whole block is project housing now anyway.
But ... going into any shop and asking for a 90 bend to be changed by one or two degrees ... that's not going to be me. Heat + bending a little ?
The old Tech Shop location in San Jose ( across the street from Camera 3 ) had a Hossfeld or a Hossfeld type bender, I reckon they just moved it to their new location.
GD
From: Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
To: Steve Liebenow <steven.liebenow at att.net>
Cc: DeTomaso List <detomaso at server.detomasolist.com>
Sent: Tuesday, October 10, 2017 5:31 PM
Subject: Re: [DeTomaso] Bay Area Guys!: Tubing bender for water pipes 1-3/8" ?????
Steve,
Since it appears to be defective it is not YOUR responsibility to fix it!!!!
Normally these things exit the block and turn to run just about parallel to the valve cover. If yours isn't doing that, see about exchanging it.
There was once a bad batch of headers that looked fine to the naked eye, but if installed the collector would be in the middle of the chassis rail. Stuff happens.....
Mike
Sent from my iPad
> On Oct 10, 2017, at 16:34, Steve Liebenow <steven.liebenow at att.net> wrote:
>
> OK, youse Bay area guys........I need to find someone with a 1-3/8" set
> of dies for a tubing bender.....hopefully the person with the dies has
> the tubing bender also!!! I've called all the shops I know of or that
> are still in biz......everyone starts at 1-1/2" dies and goes
> up.....roll bars etc.
> I have a new stainless thermostat housing pipe which looks like it
> should work just fine. Well, that's a matter of opinion..... It
> apparently is not an exact copy of the original. It fits on the
> engine just fine, but the outlet where it connects to the pressure tank
> is pointing off into another dimension. If I installed enough rubber
> hose, it would work......problem is that it would be crooked.....and
> I'm not into crooked.....then the pressure tank needs to be crooked,
> and the connection to the lower pipe is crooked......and so on and so
> on......
> SO, I seek a shop with the ability to tweek this sucker just a little
> bit at the 90 bend. I need it to be about an 88 or 89 degree bend so
> that it parallels the valve cover instead of heading off for the sail
> panel!
> I can't rotate it on the two mounting bolts as it is already up against
> the dipstick tube.
> Next choice, is notch it and weld it up again......not my preference
> either....but may need to go this way.......
> Lemmeno!!!!
> Thanks!
> Steve
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>
>
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-------------- next part --------------
Not sure what you're asking, and couldn't find the original post, but:
Looking inside thin-wall tube like exhaust pipe or metal water pipes,
sometimes/usually I can see where a mandrel dragged along inside the
pipe making scratches during the bending process. I've come to
understand with the thinner wall tube a mandrel inside is necessary
otherwise the tube collapses. Used to be "mandrel bent" meant "bent
with an inside mandrel" but today has lost its meaning.
I tried Proto-Pipe on Lincoln but the guy promptly squashed the last of
my 1.5 tube stash ( expensive, came from Tube Service in Milpitas ) and
said "well, after 5 or 6 I could get this set up to not collapse the
tube". This was using an inside mandrel, just not positioned exactly
where it needed to be. Expect PP is long gone now.
Next ( bought more tube ) I tried a guy near the OSH near Bird, he did
a much better job and honestly I don't remember if he used a mandrel or
not. I do remember getting a parking ticket, and that whole block is
project housing now anyway.
But ... going into any shop and asking for a 90 bend to be changed by
one or two degrees ... that's not going to be me. Heat + bending a
little ?
The old Tech Shop location in San Jose ( across the street from Camera
3 ) had a Hossfeld or a Hossfeld type bender, I reckon they just moved
it to their new location.
GD
__________________________________________________________________
From: Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
To: Steve Liebenow <steven.liebenow at att.net>
Cc: DeTomaso List <detomaso at server.detomasolist.com>
Sent: Tuesday, October 10, 2017 5:31 PM
Subject: Re: [DeTomaso] Bay Area Guys!: Tubing bender for water pipes
1-3/8" ?????
Steve,
Since it appears to be defective it is not YOUR responsibility to fix
it!!!!
Normally these things exit the block and turn to run just about
parallel to the valve cover. If yours isn't doing that, see about
exchanging it.
There was once a bad batch of headers that looked fine to the naked
eye, but if installed the collector would be in the middle of the
chassis rail. Stuff happens.....
Mike
Sent from my iPad
> On Oct 10, 2017, at 16:34, Steve Liebenow
<[1]steven.liebenow at att.net> wrote:
>
> OK, youse Bay area guys........I need to find someone with a 1-3/8"
set
> of dies for a tubing bender.....hopefully the person with the dies
has
> the tubing bender also!!! I've called all the shops I know of or
that
> are still in biz......everyone starts at 1-1/2" dies and goes
> up.....roll bars etc.
> I have a new stainless thermostat housing pipe which looks like it
> should work just fine. Well, that's a matter of opinion..... It
> apparently is not an exact copy of the original. It fits on the
> engine just fine, but the outlet where it connects to the pressure
tank
> is pointing off into another dimension. If I installed enough
rubber
> hose, it would work......problem is that it would be crooked.....and
> I'm not into crooked.....then the pressure tank needs to be crooked,
> and the connection to the lower pipe is crooked......and so on and
so
> on......
> SO, I seek a shop with the ability to tweek this sucker just a
little
> bit at the 90 bend. I need it to be about an 88 or 89 degree bend so
> that it parallels the valve cover instead of heading off for the
sail
> panel!
> I can't rotate it on the two mounting bolts as it is already up
against
> the dipstick tube.
> Next choice, is notch it and weld it up again......not my preference
> either....but may need to go this way.......
> Lemmeno!!!!
> Thanks!
> Steve
> _______________________________________________
>
>
> Detomaso Email List is not managed by POCA
> Posted emails must not exceed 1.5 Megabytes
> DeTomaso mailing list
> [2]DeTomaso at server.detomasolist.com
> [3]http://server.detomasolist.com/mailman/listinfo/detomaso
>
> To manage your subscription (change email address, unsubscribe, etc.)
use the links above.
>
> Members who post to this list grant license to the list to forward
any message posted here to all past, current, or future members of the
list. They also grant the list owner permission to maintain an archive
or approve the archiving of list messages.
_______________________________________________
Detomaso Email List is not managed by POCA
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References
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