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06-20-2021, 02:25 PM
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#1
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Member
Join Date: Oct 2020
Posts: 30
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Holes in frame flange - would you be concerned?
So it looks like the stabilizing jacks on my trailer were replaced, and to add the new ones, they drilled some new holes, leaving excess empty holes in the bottom flange of the I-beam. I'm assuming extra holes aren't good, but are they a concern? There's 2-3 extra empty holes on each corner, some 1/4" some 3/8.
Should I see if a welder can fix this? Or is it really not a concern?
https://imgur.com/a/S0qUKj6
Thanks!
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06-20-2021, 04:32 PM
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#2
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Cousins
Join Date: May 2021
Posts: 103
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Me personally, the tiny holes wouldn’t bother me. If they bother you, have they filled. Welding on the frame may be as bad as the holes, due to the heat.
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2015 Forest River Cherokee Grey Wolf Limited
2011 F150 Supercrew Ecoboost Lariat 4WD
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06-20-2021, 07:13 PM
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#3
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Senior Member
Join Date: Aug 2019
Posts: 1,052
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prime and paint
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06-20-2021, 07:18 PM
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#4
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,327
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Holes at the ends of a frame rail are rather inconsequential. Very little weight out of the total is carried there. Also, the bottom frame flange is in "compression" while the top flange is in "tension" while carrying the load. Holes are less problematic on the bottom.
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2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change  )
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06-20-2021, 07:32 PM
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#5
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Senior Member
Join Date: Jul 2017
Location: Zephyrhills FL
Posts: 1,107
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Quote:
Originally Posted by Thomas ho
prime and paint
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Yep.
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06-21-2021, 01:00 PM
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#6
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Senior Member
Join Date: Apr 2017
Location: Florida
Posts: 492
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I'd at least caulk the holes to keep water out of them.
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06-21-2021, 02:59 PM
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#7
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Member
Join Date: May 2012
Location: Dixon, IL
Posts: 89
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Quote:
Originally Posted by Thomas ho
prime and paint
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X2
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2017 Montana HC 353RL added Disc Brakes, Progressive SURGE PROTECTOR.
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PAST- 2012 Coachman Leprechaun 319DSF w/TOAD -2011 Chevrolet Equinox 4-cyl. AWD, 2008 Springdale 266RL, 2002 Outback 25FB
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06-22-2021, 06:30 AM
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#8
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Senior Member
Join Date: Jun 2016
Location: Maurice, LA
Posts: 4,095
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Quote:
Originally Posted by TitanMike
.............the bottom frame flange is in "compression" while the top flange is in "tension" while carrying the load. ..............
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I think that is backwards Mike, the top being pushed on is trying to get smaller, so it is in compression. The bottom, when bending downwards is trying to stretch so it is in tension.
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06-22-2021, 08:06 AM
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#9
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Senior Member
Join Date: May 2019
Location: Central Alabama
Posts: 256
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Quote:
Originally Posted by DouglasReid
I think that is backwards Mike, the top being pushed on is trying to get smaller, so it is in compression. The bottom, when bending downwards is trying to stretch so it is in tension.
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Correct
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06-22-2021, 08:14 AM
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#10
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Senior Member
Join Date: Aug 2018
Location: Richmond VA
Posts: 4,544
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They're lightening holes and since the trailer now weighs less it will tow better.
-- Chuck
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2006 Roo 23SS behind a 2017 Ford Expedition
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06-22-2021, 09:01 AM
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#11
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Member
Join Date: Oct 2020
Posts: 30
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Quote:
Originally Posted by DouglasReid
I think that is backwards Mike, the top being pushed on is trying to get smaller, so it is in compression. The bottom, when bending downwards is trying to stretch so it is in tension.
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I would think it would be both, depending where on the frame. Ie, between the hitch and the wheels, the top would be compression and the bottom would be tension as both "ends" of that segment are being supported. But behind the wheels would be the opposite as the hanging end is pulling down, making the top tension, bottom compression, no? But I'm no engineer.
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06-22-2021, 09:09 AM
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#12
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Senior Member
Join Date: Apr 2019
Posts: 648
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Quote:
Originally Posted by boogiejack75
Correct
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I think you are both right
When looking at the weight on top of the frame
top could stretch and bottom could compress
When looking at the force of the jacks on the bottom of frame
bottom could stretch and top could compress
I am dizzy now and have a sick headache. 
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06-22-2021, 09:30 AM
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#13
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Senior Member
Join Date: Oct 2015
Location: Wisconsin/Florida
Posts: 1,905
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The holes you have circled are the result of sloppy work. The bolts have been removed at some point. Take a caulk gun and force a sealer into those holes to prevent moisture penetration. The holes in the metal plates are for multiple purpose applications.
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