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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > DIY project for Generator rack

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Sponsored By:
Snomas

Sedona, AZ

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Joined: 01/28/2001

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Posted: 09/10/19 09:20am Link  |  Quote  |  Print  |  Notify Moderator

I like 12ga Angle for a 2'X4 'platform. It is light wt and strong enough for what I need to carry. A 2x2 x 1/8" steel angle across the bottom of the 4" bumper tube will also be strong enough and lighter than 1/4" angle. IMHO.

Note: My trailer is brand new. No rust yet!

What do you guys think!


2018 F150 Lariat Crew Cab, 5.0 L V8, RWD.
2019 Flagstaff micro mini 21DS
Anderson WDH

Lynnmor

Red Lion

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Posted: 09/10/19 09:30am Link  |  Quote  |  Print  |  Notify Moderator

Bert Ackerman wrote:



What is the criteria that determines that a manufactured beam is flimsy and somehow weaker than a rolled beam of the exact same dimensions? Why, because its welded together from 3 pieces of sheet? Personal opinion or did someone run the structural calculations.


I did my calculating while I was running weld beads over my four frame cracks.





Bert Ackerman

Palm Beach

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Posted: 09/11/19 03:41am Link  |  Quote  |  Print  |  Notify Moderator

Lynnmor wrote:

Bert Ackerman wrote:



What is the criteria that determines that a manufactured beam is flimsy and somehow weaker than a rolled beam of the exact same dimensions? Why, because its welded together from 3 pieces of sheet? Personal opinion or did someone run the structural calculations.


I did my calculating while I was running weld beads over my four frame cracks.


You had four frame cracks at the continuous machine welds where the flange was welded to the web of the main frame rail?

Lynnmor

Red Lion

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Posted: 09/11/19 06:27am Link  |  Quote  |  Print  |  Notify Moderator

Bert Ackerman wrote:



You had four frame cracks at the continuous machine welds where the flange was welded to the web of the main frame rail?


Actually the cracks were where the cross members joined the flimsy web of the "I-beam". The flimsy flanges have little resistance to lateral movement and that flexing causes cracks at stress points.

Yes, welded I-beams could be made strong enough to do the job, but in the RV industry it is all about cheap and light weight, thus the use of this marginal product.

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