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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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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!


2006 WINNEBAGO ASPECT 29H Ford E450 Super Duty
2018 F150 Lariat Crew Cab, Coyote 5.0 L RWD

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

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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.

vtraudt

Brighton, MI

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Posted: 08/22/21 02:42pm Link  |  Quote  |  Print  |  Notify Moderator

I know the WORST place to add mass (= weight, inertia) is far away from the center of the trailer.

So adding a generator rack at the end of the trailer is certainly a BAD idea (if concerned about trailer sway, stability, etc).

The A frame seems to be a good spot on the trailer, but I need to relocate battery (maybe buy sealed battery and put under floor; does not need to be accessed often). And do something with the 2x 20lb propane bottles (get rid of one), replace the other with stationary, cylindrical placed under floor, or a horizontal, smaller diameter.
Then make mount/platform for generators (2x 2000W)?

Ideally: make custom FRONT BUMPER mount for towing vehicle!!! The added weight on the front (steering) tires will actually HELP with sway, stability, etc.

Just need to find the time to take the front bumper off and find where the 'hard' points are (here: 2004 VW Touareg towing 7000 lb trailer).

capacitor

California

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Posted: 08/22/21 05:39pm Link  |  Quote  |  Print  |  Notify Moderator

As of its first generation, the Touareg was developed together with the Porsche Cayenne and the Audi Q7, sharing platforms and much technology. The vehicles were developed as unibody SUVs with independent suspension. The initial generation (2002–2010) offered five-, six-, eight-, ten- and twelve-cylinder engine choices.

Interesting, it pulls the trailer just fine?

vtraudt

Brighton, MI

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Posted: 08/23/21 10:10am Link  |  Quote  |  Print  |  Notify Moderator

capacitor wrote:

As of its first generation, the Touareg was developed together with the Porsche Cayenne and the Audi Q7, sharing platforms and much technology. The vehicles were developed as unibody SUVs with independent suspension. The initial generation (2002–2010) offered five-, six-, eight-, ten- and twelve-cylinder engine choices.

Interesting, it pulls the trailer just fine?


Modern, firm suspension, stiff sidewall tires, independent suspenion, etc are an excellent basis for towing. Sway is caused by trailer motion pushing towing vehicle side to side. So low tech, soft, imprecise suspensions (think tractors and trucks) have a disadvantage.

Sway is actually tested and measured as increased understeer (front tires not able to turn as desired).

Very high tongue weight further unloads the front tires, making weight distribution hitches a necessity.

The Touareg (First gen; mine even has air suspension, allowing me to select sport (stiffer springs/more damping) tows phantastic. I run under 500 lbs tonque weight, heavy/compact items go in the car (behind driver seat, forward in trunk). In the future, I will put more weight on the A frame (currently battery, 2x LP bottles). Heavy items in forward storage box in trailer. Heavy other (food, drinks, etc) in storage above/near axle. I tow with fresh water tank full (weight is on axles). No heavy items at rear of trailer (=sway), not even bike rack.

Gas mileage sucks (but I only manage to get 13 mpg without trailer, so 9-10 is really no surprise at all).

My next towing vehicle will be either the T3 (3rd gen) Touareg TDI (3.0 liter turbo diesel, 8 spd auto, no air suspension avaible) or the Cayenne Diesel (same engine/trans/chassis, but optional air suspension). The Q7 is too long for me.

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