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We used to pull our 19' boat or 84 CJ7 (on a towbar not trailer) behind our travel trailer, the sway control and load equalizer bars on the first trailer helped tremendously. I don't know about your state, but in CA you are required to have a 'locking hitch mechanisim', not specifically a 5th or gooseneck hitch. Used to carry a copy of the CVC with us but never needed it.
Here is what I'm thinking, legal or not. If what ever you are towing does not have enough tongue weight (even single trailer) it will cause you to whip on braking or deceleration. If the second trailer has to much tongue weight it will counter the first trailers tongue weight causing this problem. If each trailer is loaded just right as to have the correct amount of tongue weight on each of them the out of control whipping should be under control. Understanding that all turns and corrections are magnified on the second trailer, using a little common sense and taking it slower say 55 mph max. (if I'm lucky) It should work ok.
I think using a load equalizer on the second trailer may help to adjust both trailers tongue weights and help with sway control on the second trailer.
I pull a TT and an ATV trailer behind that. You are going about it in the right way. Just stay comfortable with your capabilities and correctly load your trailers. I use and equalizer hitch on the TT. I also have anti sway devices, 2 on my TT and one on the ATV trailer. As long as you stay in control there is nothing to worry about.
Also I think that as long as your under 73ft bumper to bumper your legal in Idaho.
I thought he hardest part of the whole installation was not melting the insulation under the trailer while welding the hitch on the back of the TT. But nothing a little Idaho Engineering couldn't handle. I bought some beer and borrowed a hood and another set of leathers for a friend to hold up a wet towel to prevent it from melting.
I have all winter now to get all this done so I should be OK.......Ya right I'll probably wait until a week before it's time to go before I get working on it. Thanks for the info guys it's all been helpful.
The advise given so far has been pretty good. I tow a 28ft TT and an older 17ft Boat in tandem on a regular basis. it's perfectly legal in ND up to 75ft (I'm at 73ft). The whole key is the balence of tongue weights, the levelness of the whole rig, braking power wether it be on the trailers or pickup, and of course the weight ratio of the second trailer vs the first trailer. My camper weighs over 8k loaded so my 2k lb boat isn't even noticed behind the trailer. now I'm a little concerned as I will be upgrading to a 19ft glass boat this summer which will weigh close to half what the camper does, it'll be a little trial and error but it ultimatly comes down to the weight scale!
Pictures of my rig can be found in my gallery (both the new camper and the old one)
Thats sweet.... Looks like I should be able to get it done with my little set up. My weight ratios between the two trailers is going to be a little closer though. If that screws me up maybe I'll get some street tires for my Jap Jeep and flat tow it.
Before I bought a Toy Hauler, I used to tow a ATV trailer behind my TT.
I did not want to cut into my TT wiring to hook up the ATV trailer wiring , so I ran a cord under the TT that plugs into the 4- wire connector on the truck and plugs into the ATV trailer on the rear of the TT.
Hook the the TT plug to the 7 wire plug and the ATV trailer cord to the 4 wire plug and away you go....
The only thing I did not like about pulling doubles was that I could not see the ATV trailer in my mirrors, so I had to stop a little more often to put my mind at ease that all was well on the rear trailer.
.....I did not want to cut into my TT wiring to hook up the ATV trailer wiring , so I ran a cord under the TT that plugs into the 4- wire connector on the truck and plugs into the ATV trailer on the rear of the TT.
Hook the the TT plug to the 7 wire plug and the ATV trailer cord to the 4 wire plug and away you go....
We pull a ATV trailer with 2 bikes and a quad behind a 10k 5er. In the past it has been with a goose neck adaptor on a Chev 2500. Tha ATV trailer is 8.5 ft wide so I can see it around the 5er. This setup works good as long as the tounge weight on the second trailer is kept light. It will whip a little bit on rough highway but you can't feel it in the pickup. Panic stops are no problem.(That got a good test last summer)
Next year it will all go behind a SD with a fifth wheel hitch and I'm hoping for even better results.
A good friend pulls a 3 rail bike trailer behind a 24 ft TT. Said he can't tell the second trailer is back there. Bike trailer only weighs about 1200-1500 lb.
I pull 21 ft. TT and 14 ft. fishing boat behind 04 F250 4x4. Here in Colorado it is perfectly legal. Have reciever hitch on TT and wired to 4 prong on boat trailer. I go all over the place you just need to stop once in awhile to check boat as you can't see it unless you turn a corner. Backing up Not allowed. Never had a problem, as I check and double check everything all the time. Tows great, never feel bad about it.
I have an 05 F350 SRW LWB 4X4 diesel. I pull a 26' tandem axle 5er and a 14' ball hitch flat deck (loaded with 3 to 4 ATV's). The 5er has tandem axle brakes and the flat deck is tandem axle with only one braking axle. When I set up the 5er brakes the way I like it is too high for the flatdeck brakes (smoke show). I currently have a REESE brakeman. Any suggestions on different set ups? I really like the idea of having brake power to both trailers. Thanks!
I have an 05 F350 SRW LWB 4X4 diesel. I pull a 26' tandem axle 5er and a 14' ball hitch flat deck (loaded with 3 to 4 ATV's). The 5er has tandem axle brakes and the flat deck is tandem axle with only one braking axle. When I set up the 5er brakes the way I like it is too high for the flatdeck brakes (smoke show). I currently have a REESE brakeman. Any suggestions on different set ups? I really like the idea of having brake power to both trailers. Thanks!
Assuming you are running all 3 axles from the same controller? Would suggest you add a small series resistor in the brake line to the flat deck trailer to cut down the current to it. Might take a little experimenting to find the right value...probably wind up with a wirewound one.. going to look something like this:
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