Author Topic: hydraulic camper lift design  (Read 567 times)

0 Members and 1 Guest are viewing this topic.

Offline kmehr

  • RCC Rookie
  • **
  • Posts: 470
  • Cummins diesel forever
hydraulic camper lift design
« on: July 2, 2020, 05:39:21 pm »
Looking at improving my camper loading and removal experience.  I have a 2005 Dodge ram 2500 and a slide in camper that weighs about 1200lbs dry.  It has 4 old school hand crank jacks that are just too sketchy for our taste.  I'm looking to design a new lift setup that makes things much easier, safer and stable.  The Rieco titan 4 wireless jack kit at $2,300 is kind of my benchmark for cost.  If I can design something significantly cheaper that would be ideal.  I'll buy those jacks if I have to.

My idea is this- metal cradle with four hydraulic cylinders to lift each corner.  The metal cradle isn't important because it'll have to be made either way to support a corner jack like the Reico or this hydraulic setup.

My problem is that I've never really messed with hydraulics, so the single acting vs double acting and correct type pump are a bit of a mystery.  I'm thinking that a hydraulic pump like:

https://www.amazon.com/BestEquip-Electric-Hydraulic-Single-Solenoid/dp/B06XSZ6N66/ref=pd_di_sccai_1/134-2055900-7183131?_encoding=UTF8&pd_rd_i=B06XSZ6N66&pd_rd_r=aa0b0beb-c252-495e-8c01-49b0c2a28794&pd_rd_w=PFH6f&pd_rd_wg=4362q&pf_rd_p=7d91b49a-6b22-4dfd-8a2a-1555d90a4698&pf_rd_r=NZC763HDXN2NN64PED35&psc=1&refRID=NZC763HDXN2NN64PED35

With 4 of these:
https://www.amazon.com/dp/B081RGMWDL/ref=sspa_dk_detail_2?psc=1&pd_rd_i=B081RGMWDL&pd_rd_w=qaRik&pf_rd_p=48d372c1-f7e1-4b8b-9d02-4bd86f5158c5&pd_rd_wg=tN5Uc&pf_rd_r=JNQPQ3JQC4Q4AR9AVRFF&pd_rd_r=19b97780-3f55-4939-aa20-1f7cda701efa&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExRUhORk1FUlVVRlhBJmVuY3J5cHRlZElkPUEwNDA1OTAzNjczNTNIQjlZWTkyJmVuY3J5cHRlZEFkSWQ9QTA2MjYzMTgyUzRGT1cxUE5HT0JEJndpZGdldE5hbWU9c3BfZGV0YWlsJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

From the pump I would need to run a flow splitter valve like this?:
https://www.amazon.com/Hydraulic-Pump-Flow-Divider-Combiner/dp/B074CN4JK9/ref=sr_1_2?dchild=1&keywords=hydraulic+flow+divider&qid=1593729491&sr=8-2

The idea is to have the pump raise all 4 cylinders equally, despite them having a different weight load to that the camper stays level.

Any help appreciated.
1984 W350 CC 6bt NV4500, dana 60/80 SOLD
2010 Audi Q5 3.2 V6- the Lady's
2005 Dodge 2500 QCSB NV5600 4x4
2015 Toyota Corolla- 100 mile a day commuter

RamChargerCentral

  • Advertisement
  • ***

    Offline RedneckInTraining

    • Sr. Member
    • *****
    • Posts: 2970
    • Gender: Male
    • Don't believe what "THEY" tell you!
    1994 Dodge Ram 2500 CTD
    1987 Dodge Dakota 3.9 V6

                          RON PAUL- 2012
    Governments control people. Who CONTROLS the GOVERNMENTS of the people?

    Offline RedneckInTraining

    • Sr. Member
    • *****
    • Posts: 2970
    • Gender: Male
    • Don't believe what "THEY" tell you!
    Re: hydraulic camper lift design
    « Reply #2 on: July 9, 2020, 10:55:05 am »
    a single acting hydraulic ram extends or retracts in one direction with fluid power,the other side uses a spring to extend or retract the ram. For your application your gonna want a double acting cylinder so that lifting and lowering is controlled by fluid flow.

    Although, honestly, how often are you planning on taking the camper on and off?
    1994 Dodge Ram 2500 CTD
    1987 Dodge Dakota 3.9 V6

                          RON PAUL- 2012
    Governments control people. Who CONTROLS the GOVERNMENTS of the people?

    Offline RCCADMAN

    • Jr. Member
    • ***
    • Posts: 612
    • Gender: Male
    • The Tinkering Nerd
      • 1974 Ramcharger Owner Galleries
    Re: hydraulic camper lift design
    « Reply #3 on: July 9, 2020, 11:46:22 am »
    74 RC SE 4X4
    77 RC HD 2WD
    74 RC rust bucket Parts truck
    78 Trailduster Body
    99 Durango SLT 360
    93 F350 Dually Centurian 460 4X4 Crew

    Offline KG5JXO

    • Newbie
    • *
    • Posts: 126
    • Gender: Male
    Re: hydraulic camper lift design
    « Reply #4 on: August 27, 2020, 10:28:46 am »
    with single acting (which I would use) simply regulate the speed fluid flows out of the cylinder. You won't need power down, that's what gravity is for. not sure what valve is on that pump but you'll want one with three ports (pressure, tank, and whats normally labelled "A" which will run to your cylinders) three positions with a blocked center spring centered. you will probably want 4 flow control valves, the valve you liked has 2 in it, also I'm not really sure that one is designed to work with flow in both directions which you would want. Worth noting is also that un-level ground might be an issue as all 4 cylinders extend the same amount with that set up not much leveling capability and if ones in a low spot it may cause an issue with stability. Also you need a flow control valve in the line returning fluid to tank or it will try to come down far to fast.
    « Last Edit: August 27, 2020, 10:30:58 am by KG5JXO »
    1975 W100 Power Wagon Adventurer Sport
    318 727 NP203 3.55

    Offline Killerbee

    • RCC Rookie
    • **
    • Posts: 319
    • MoPaR
    Re: hydraulic camper lift design
    « Reply #5 on: August 29, 2020, 12:37:51 pm »
    As remarked above...  A hydraulic 'splitter' or 'valve' will not evenly distribute hydraulic fluid.  I think hydraulic would be a real tough thing to get 'right'.  There's a reason why nobody does that from a single pump.

    I'd get four electric jacks.  You can use them without an extra pump or setting up hydraulic lines.  It's true that three will work... but if it goes wrong you won't get a second chance to save it.  Get four.

    A friend has four and he just unloads the camper at the camp site to get it lower (easier to get in and out of) and to free up the truck to go into town w/o the camper on it....  It's pretty easy to load and unload with just one person, and very easy with two.

    Be sure to factor in that you can pretty easily get one of the four jacks unloaded (not toughing the ground or any weight on it).  So it's a good idea to go with the ones you refered to or a similar size.  You can get al LOT of the wieht on one of the front jacks pretty easy.  You'll undoubtedly end up loading or unloading the camper when it's packed at some point.

    -Ben

     

    email