Private, Removed.

[jqattan56]

Thank you​

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[BayouCityBob]

IMO, the future of pull-behind trailers will be electric assist.

https://www.motortrend.com/news/airstream-estream-electric-drivetrain-trailer/

Nio has the solution for people who do not wish to invest in the trailer battery pack but only want to rent that.

Obvious combination is an e-assist trailed and a rentable battery pack:
• When going long distance rent a pack
• when going short distance pull behind and do not worry about range hit
• enables vehicles with extremely little tow capacity to tow big loads which reduced towing requirements. A 10,000lb load = ~2.500lb load with e-assist.

 

[Deleted member 3316]

The 30,000 Lbs. Solution​

Tesla, Presently, does not have a fully functional, light to medium capacity Trailer design division, and with the introduction of the CyberTruck, I believe it is the most opportune time to bring in the New CyberTrailer with self-steer system equipped trailer, as seen below. (Photoshop of original rendering)

View attachment 18357

Please visit YouTube “getafix56” channel for an old design from 2002 example of Front self-steer system in action.

The question to answer is “How can we make the 30,000 Lbs. towing by a CyberTruck a possibility, and also improving the towing efficiency?”

The most common Tow vehicle/Trailer combination, below, shows that most general-purpose trailers loading, consist of a load bearing axle or axles located on the trailer to carry ~ 88 to 92% of Gross Trailer weight rating (GTWR), while 8 to 12% is tongue loading. This is carried on the Tow vehicle hitch. The added hitch loading is passed on to the vehicle’s rear axle loading, robbing it from useful vehicle payload.

View attachment 18358
View attachment 18359

The Tow vehicle weight limitations are attributed by:

• Tow vehicle traction, such as heavy, battery laden Tesla such as with Models S, X and CyberTruck.
• Standard Trailer Gross Trailer Weight (GTW = 5,000 Lbs.), when hitched to a tow vehicle, will result in weight transfer of up to ~ 12% to the tow Vehicle Hitch.

So, if say, model X, has a GVW of ~ 5,800 Lbs., with Rear Drive Axle loading at about 50% = 2,900 Lbs. This means that the Model X will experience extra hitch load of ~ 700 Lbs. which is also, Model X payload loss. This is the case with Standard Trailer design. Also, the Rear Axle Tires rolling Resistance is 24% higher.

In Pulling the plane scenario, not towing, it was only possible, with a Zero Hitch load setup. There would be no drawbar hitch load exerted on the rear suspension system, tires or axle components in the Tesla or any electric tow vehicle.

To allow electric cars, trucks and SUVs to take advantage of their true towing capabilities, trailers with Zero Tongue/Hitch Load is needed, such as the dolly Pop-trailers, (Wagon hitch set-up), or Self-steer zero tongue/ Hitch Loading trailers, as will be shown later.

Zero Tongue weight = Zero Tongue Load = Zero Hitch Load.

This also eliminates extra Tow vehicle Tires rolling resistance due to typical drawbar load transfer. This will produce a more efficient tow.

View attachment 18360
View attachment 18361

The Tow Bar pull, shown above; is the kind you usually see. The Plane Tow is a Zero Hitch Load setup, and the other image is of a bumper mount tow bar setup. The steer axle, of towed vehicle, is self-steering, forward caster, and hence, must always travel forward, and the driver must have an exit plan when parking.

A patented Reversible Caster, Self-Steer Axle Equipped Trailers can be maneuvered in both forward and reverse directions, while maintaining tow vehicle tracking, with zero transfer load to tow vehicle.

View attachment 18362
View attachment 18363
The forward mounted reversible caster Self-Steer System eliminates:

• Fishtailing / Porpoising, Crosswind instability,
• Jackknifing, in both forward and reverse is greatly reduced.
• The Light Duty trailers, shown above, can be rated between 5K to 10K approximately, and all AWD Electric Vehicles can Pull/Tow twice their GVWR. Such as, TESLA, Models 3, S, X, and later the Tesla`s Cyber Truck.

The Heavy-duty Trailer Design would rate between 10K to 30 K. for use with CyberTruck and heavier.

Thank you for reading of this material. 20 year journey.

How much does the extra complexity add to the cost of the setup.

 

[Ehninger1212]

IMO, the future of pull-behind trailers will be electric assist.

Agreed. Put some hub style electric motors on the ends of the axles, a battery pack of some size integrated as the floor/under the floor. Regen for trailer braking.. would be sick. You wouldn't have to connect the pack the the EV either just run them separate. Have some sort of Bluetooth connection to the vehicle to monitor the state of charge in the trailer pack.

 

[cvalue13]

 

[cvalue13]

Wait, did you delete the other thread, and then come repost the same thread?

Could you help us understand why you’d do that?

 

[ÆCIII]

The previously mentioned 'Electric Assist' in the trailer which I do think is viable, is also in the Lightship L1 which was on display in Austin recently. This was also posted in previous threads, but I thought I'd mention it again here:




I believe Electric Assist could be implemented in most other large trailer designs as well.

- ÆCIII

 

[jqattan56]

Wait, did you delete the other thread, and then come repost the same thread?

Could you help us understand why you’d do that?

To reach more eyes. This concept had been forgotten for years, and wish to resurrect it. One hopes.

 

[Bill906]

When I was a kid I worked on my uncle's farm for a couple of summers. Hay wagons are 4 wheeled like this. It was somewhat of a right of passage when you were able to back up a hay wagon correctly the first time without having to pull forward to reset.

My uncle could back up a string of two haywagons linked together. It was fun to watch him.

 

[jqattan56]

Mu good man, you are talking about Wagon style trailers. Also dolly based, all have two hitch points. Makes them jackknife both in forward and reverse, but a self-steer leading trailer is quite stable. Please read the attached file and review the video clip carefully. There are dozens of units used in North west texas utility company ONCORE supplied by Altec back afew years. This is not a 5th wheel setup, not even close.

 

[jqattan56]

IMO, the future of pull-behind trailers will be electric assist.

https://www.motortrend.com/news/airstream-estream-electric-drivetrain-trailer/

Nio has the solution for people who do not wish to invest in the trailer battery pack but only want to rent that.

Obvious combination is an e-assist trailed and a rentable battery pack:
• When going long distance rent a pack
• when going short distance pull behind and do not worry about range hit
• enables vehicles with extremely little tow capacity to tow big loads which reduced towing requirements. A 10,000lb load = ~2.500lb load with e-assist.

 

[jqattan56]

The dolly and 5th wheel based, have two hitch points. Makes them jackknife both in forward and reverse, but a self-steer leading trailer is quite stable. Please read the attached file and review the video clip carefully. There are dozens of units used in North west Texas utility company ONCORE supplied by Altec back afew years. This is not a 5th wheel setup, not even close.
They are very stable, and they are rated at 18K Lbs. run at highway speeds with no issues.

 

[cvalue13]

To reach more eyes. This concept had been forgotten for years, and wish to resurrect it. One hopes.

did you delete the other thread?

I don’t see it

 

[Deleted member 3316]

This is just like towing a car with an A-frame.
Dog trailers have been around for quite a few years they require a different strategy for backing but significantly less complicated solution than A-frame.

There has to be a reason dog trailers are not popular for amateur use. I hazard a guess the extra complexity and rolling resistance has something to do with it.

This is an interesting solution also.

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