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Old 03-26-2019, 07:03 PM   #1
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Hydraulic tongue jack

Ok so..... I’m looking at a new project with QUADRA manufacturing which makes Bigfoot leveling systems for RV’s. I installed one of there systems on my Dads 30’ LazyDaze Class C and it has worked flawlessly.

They have developed a hydraulic tongue jack for larger trailers based on there RV leveling system pump and cylinder. See link.
https://www.shop.thebigfootleveler.c...16-QT8K-16.htm

I’m working with there tech guys to design a system that will work for our Airstream.
This system will include a 8000lb cylinder with the base plate welded approx 6” from the cylinder base. This will allow the bottom of the cylinder to be approx 1” below the bottom of the tongue a frame. No other brackets will be welded to the cylinder which will keep things very clean.
The electric pump will be remotely mounted under the trailer in the back Streetside corner of the spare tire well. (It will not hang down below the spare tire)
Two hydraulic lines approx 7’ in length will be routed to the cylinder along the inside of the a-frame.
I will have to work out a toggle switch enclosure and mounting location but after that this tongue jack will be AWESOME.
I know there will not be a manual override or a way to manually operate the system without battery power but I don’t think that will be a problem for me.
WHAT DO YOU GUYS THINK?

Here is a YouTube video of their current system. We will utilize the same pump and cylinder, but will remotely mount the pump to clean things up a bit.
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Old 03-26-2019, 09:31 PM   #2
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What happens when I lose power and have to raise or lower the Jack under that condition?

Reminds me about the time our aircraft carrier rolled an A-7 onto the helipad of a tanker alongside when the guy riding the aircraft brakes lost hydraulic pressure. He thought he was going down into the water, but the guys lounging on the helipad threw chocks at the A-7 and got it secured in the nick of time. I’m sure the kid in the cockpit had a laundry problem after that wild ride.

Worse, it cost us a pallet load of ice cream to get the airplane back when both ships made port...
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Old 03-26-2019, 09:38 PM   #3
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Why?

My jack has a switch. One direction raises the jack, the other direction lowers the jack. When I let go of the switch, it stops. If I loose power, I can crank it by hand with the jack tool.

What else do you want?
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Old 03-26-2019, 10:26 PM   #4
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Hydraulic tongue jack

Precisely. On an Airstream the standard electric jack works ‘just fine’. It works, or it breaks and you can crank it by hand, or just unbolt it and toss it into the TV to fix/replace later. No huhu.
Stuck down, break out the bottle jack, unbolt as before. Simplicity personified...

Sorta like the very old Volkswagen Beetle commercials on Television.

“It goes forward, it goes backwards, it goes slow, it goes fast. It turns left, it turns right. What more do you need?”
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Old 03-27-2019, 06:51 AM   #5
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I'm not sure I'm a player, but here's my feedback. The head unit must be smaller. (remote components???). The foot design must be smaller and cleaner. I believe it would interfere with a Hensley and maybe a PP hitch.
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Old 03-27-2019, 08:34 AM   #6
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To each their own I guess. I like the fact the system mounted to the tongue would be very compact.
The bottle jack backup plan is what I was thinking would work. I carry one for the truck all the time.
With the hydraulic lift on the front there would be very little binding while lifting the back of the truck up some to install WD bars.
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Old 03-27-2019, 08:38 AM   #7
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Since you asked, I'm wondering what the advantage of a hydraulic system is?
I can understand if the tongue weight is so large as to require hydraulics, but that's not us.
Maybe I'm missing something?
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Old 03-27-2019, 08:54 AM   #8
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Quote:
Originally Posted by Mollysdad View Post
Since you asked, I'm wondering what the advantage of a hydraulic system is?
I can understand if the tongue weight is so large as to require hydraulics, but that's not us.
Maybe I'm missing something?
My guess is...noise reduction??
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Old 03-27-2019, 08:55 AM   #9
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Originally Posted by dznf0g View Post
My guess is...noise reduction??
Could be a solution in search of a need or problem.
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Old 03-27-2019, 09:26 AM   #10
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The video doesn't give much confidence in their quality control.
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Old 03-27-2019, 03:06 PM   #11
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You are probably correct guys. Solution in search of a Problem would sum it up. Less noise would be the biggest benefit. Speed and strength also would be a benefit in my book. I believe that the system would be very low maintenance based on the demands you would place on it.

I’ve installed their RV four pump leveling system and the video does not represent the quality I’ve seen. Construction of the system I installed was good and system worked great. The pump assembly covers do leave a little to desire, but there are normally mounted under an RV so they are not out in plain view.

This company also offers 24hr customer service to those who need it.
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