I need to make a couple boat trailers... Of course I can pie slice
and weld, but I'd prefer to bend. Professional trailer members are
bent (well except the really small stuff or the really big stuff).Â
Setting up a hydraulic system with bending dies is an option, but its
a more than a few cents and a fair bit of work for what will likely be
a dozen bends ever.
I need to make two types of bends. Inwards towards the hollow of the
C, and downwards from flange to flange.
Tube is actually much easier to bend than C channel, but tube frame
trailers tend to rust out from the inside. You don't even know how
bad it is until you are at the failure point. C channel frame
trailers rust very slowly if at all because all the water runs right off.
I've got a small/medium OA torch, 20 ton jack style press, and a
little bit of machining equipment.
On 03/10/2023 00:43, Bob La Londe wrote:
I need to make a couple boat trailers... Of course I can pie sliceKnowing what size material you're trying to bend would be helpful. I've
and weld, but I'd prefer to bend. Professional trailer members are
bent (well except the really small stuff or the really big stuff).
Setting up a hydraulic system with bending dies is an option, but its
a more than a few cents and a fair bit of work for what will likely be
a dozen bends ever.
I need to make two types of bends. Inwards towards the hollow of the
C, and downwards from flange to flange.
Tube is actually much easier to bend than C channel, but tube frame
trailers tend to rust out from the inside. You don't even know how
bad it is until you are at the failure point. C channel frame
trailers rust very slowly if at all because all the water runs right off.
I've got a small/medium OA torch, 20 ton jack style press, and a
little bit of machining equipment.
bent smaller 1/2" x 1/2" x 1/16" in a home made rotary draw bender and
got really good results on either axis but I did use a sacrificial close fitting filler piece to support it during bending.
On 10/2/2023 5:08 PM, David Billington wrote:
On 03/10/2023 00:43, Bob La Londe wrote:
I need to make a couple boat trailers... Of course I can pie sliceKnowing what size material you're trying to bend would be helpful.
and weld, but I'd prefer to bend. Professional trailer members are
bent (well except the really small stuff or the really big stuff).
Setting up a hydraulic system with bending dies is an option, but
its a more than a few cents and a fair bit of work for what will
likely be a dozen bends ever.
I need to make two types of bends. Inwards towards the hollow of
the C, and downwards from flange to flange.
Tube is actually much easier to bend than C channel, but tube frame
trailers tend to rust out from the inside. You don't even know how
bad it is until you are at the failure point. C channel frame
trailers rust very slowly if at all because all the water runs right
off.
I've got a small/medium OA torch, 20 ton jack style press, and a
little bit of machining equipment.
I've bent smaller 1/2" x 1/2" x 1/16" in a home made rotary draw
bender and got really good results on either axis but I did use a
sacrificial close fitting filler piece to support it during bending.
We are talking trailers here so 3" and/or 4" steel channel. For small
stuff like you are talking about I might just make some single use
dies out of scrap aluminum. I have a lot of it.
On 03/10/2023 01:22, Bob La Londe wrote:
On 10/2/2023 5:08 PM, David Billington wrote:
On 03/10/2023 00:43, Bob La Londe wrote:
I need to make a couple boat trailers... Of course I can pie sliceKnowing what size material you're trying to bend would be helpful.
and weld, but I'd prefer to bend. Professional trailer members are
bent (well except the really small stuff or the really big stuff).
Setting up a hydraulic system with bending dies is an option, but
its a more than a few cents and a fair bit of work for what will
likely be a dozen bends ever.
I need to make two types of bends. Inwards towards the hollow of
the C, and downwards from flange to flange.
Tube is actually much easier to bend than C channel, but tube frame
trailers tend to rust out from the inside. You don't even know how
bad it is until you are at the failure point. C channel frame
trailers rust very slowly if at all because all the water runs right
off.
I've got a small/medium OA torch, 20 ton jack style press, and a
little bit of machining equipment.
I've bent smaller 1/2" x 1/2" x 1/16" in a home made rotary draw
bender and got really good results on either axis but I did use a
sacrificial close fitting filler piece to support it during bending.
We are talking trailers here so 3" and/or 4" steel channel. For small
stuff like you are talking about I might just make some single use
dies out of scrap aluminum. I have a lot of it.
OK you're building a trailer and I saw boat and assumed it was the Al
boat you're working on, my bad. Still with a 20 ton press I would expect
the first bending requirement to be doable given you can get supports
and constraints into your press similar to a hydraulic pipe bender,
bending that section depth wise is likely to be another matter. What
about fabricating from box section and galvanising it if you're worried
about rust. Galvanising is a cheap bulk process if you have a galvaniser locally and IIRC in non salt environment can be good for 70 years and
more, less in salt environment but still a good time.
We are talking trailers here so 3" and/or 4" steel channel. For small
I need to make two types of bends. Inwards towards the hollow of the C,
and downwards from flange to flange.
I need to make a couple boat trailers... Of course I can pie slice and
weld, but I'd prefer to bend. Professional trailer members are bent
(well except the really small stuff or the really big stuff). Setting
up a hydraulic system with bending dies is an option, but its a more
than a few cents and a fair bit of work for what will likely be a dozen
bends ever.
I need to make two types of bends. Inwards towards the hollow of the C,
and downwards from flange to flange.
Tube is actually much easier to bend than C channel, but tube frame
trailers tend to rust out from the inside. You don't even know how bad
it is until you are at the failure point. C channel frame trailers rust
very slowly if at all because all the water runs right off.
On 10/2/2023 6:19 PM, David Billington wrote:The only way to use tube for a boat trailer is to hot dip galvanize
On 03/10/2023 01:22, Bob La Londe wrote:
On 10/2/2023 5:08 PM, David Billington wrote:
On 03/10/2023 00:43, Bob La Londe wrote:
I need to make a couple boat trailers... Of course I can pie sliceKnowing what size material you're trying to bend would be helpful.
and weld, but I'd prefer to bend. Professional trailer members are
bent (well except the really small stuff or the really big stuff).
Setting up a hydraulic system with bending dies is an option, but
its a more than a few cents and a fair bit of work for what will
likely be a dozen bends ever.
I need to make two types of bends. Inwards towards the hollow of
the C, and downwards from flange to flange.
Tube is actually much easier to bend than C channel, but tube frame
trailers tend to rust out from the inside. You don't even know how
bad it is until you are at the failure point. C channel frame
trailers rust very slowly if at all because all the water runs right >>>>> off.
I've got a small/medium OA torch, 20 ton jack style press, and a
little bit of machining equipment.
I've bent smaller 1/2" x 1/2" x 1/16" in a home made rotary draw
bender and got really good results on either axis but I did use a
sacrificial close fitting filler piece to support it during bending.
We are talking trailers here so 3" and/or 4" steel channel. For small
stuff like you are talking about I might just make some single use
dies out of scrap aluminum. I have a lot of it.
OK you're building a trailer and I saw boat and assumed it was the Al
boat you're working on, my bad. Still with a 20 ton press I would expect
the first bending requirement to be doable given you can get supports
and constraints into your press similar to a hydraulic pipe bender,
bending that section depth wise is likely to be another matter. What
about fabricating from box section and galvanising it if you're worried
about rust. Galvanising is a cheap bulk process if you have a galvaniser
locally and IIRC in non salt environment can be good for 70 years and
more, less in salt environment but still a good time.
From what I have seen no matter what you do moisture gets inside tube
frames, and it rusts out from the inside. I've repaired a few
commercially built tube frame trailers and seen many more with the same >problem.
The boat I am working on right now is likely around 1000lbs with
outboard. A little more with fuel, and rigging. It has a rusted out
factory tube frame trailer. I welded scabs on it to keep the cross
members from breaking many year ago for the previous owner. In return he >colluded with my wife to give me my first auto dark welding helmet for
my birthday. Thank you Gary. That made a world of difference in my
welding over the years.
My last glass boat was closer to 3500 and came on a 4" C-channel frame >trailer.
All fresh water for me, but I've seen what happens to trailers used in
salt. Its not pretty.
I would prefer not to pie cut and weld, but if I have to I have to. I
DO NOT want to use tube.
--
Bob La Londe
CNC Molds N Stuff
I need to make a couple boat trailers... Of course I can pie slice andI'd be fabbing, not bending, Cut the flanges off the channel where
weld, but I'd prefer to bend. Professional trailer members are bent
(well except the really small stuff or the really big stuff). Setting
up a hydraulic system with bending dies is an option, but its a more
than a few cents and a fair bit of work for what will likely be a dozen
bends ever.
I need to make two types of bends. Inwards towards the hollow of the C,
and downwards from flange to flange.
Tube is actually much easier to bend than C channel, but tube frame
trailers tend to rust out from the inside. You don't even know how bad
it is until you are at the failure point. C channel frame trailers rust
very slowly if at all because all the water runs right off.
I've got a small/medium OA torch, 20 ton jack style press, and a little
bit of machining equipment.
--
Bob La Londe
CNC Molds N Stuff
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