Page 2 of 3 FirstFirst 123 LastLast
Results 26 to 50 of 51

Thread: Mobile Welding Trailer w/crane

  1. #26
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Quote Originally Posted by walker View Post
    I have been working with heavy equipment and welding for over 30 years. I can tell you definitively that your plan sucks. Any trailer less than 10k is absolutely worthless for any professional purpose in the construction industry (no I am not talking about framers generators or cement mixers, I am talking about hauling stuff). You can make excuses all you want for it, but in the end you are going to do whatever you want to do. A little 4” TT frame is probably worthy of hauling a motorcycle or two, but will not tolerate having a crane mounted to it. At the very least your tongue weight is going to be a bugger to get anywhere near correct with no load or fully loaded. I can watch the bowing of doubled 6” channel on my 10k trailer bow when loading, you 4” won’t tolerate walking on it without deflection. Whatever you do, when it fails, just hope you are not on a commercial jobsite, because OSHA will be called, and their fines are huge.

    Really though, go ahead and do what you want to do, we need more material in the funny section as well as the welding fails section.
    10k? For a trailer with a SMALL crane, a welder and some tools? I gotta disagree with ya there. I think you also missed the part where the trailer will be purpose built. So yes it will handle the crane. 4" channel has its limits, yes. Lucky for me those limits are easily overcome by good engineering. Unless you want to buy me some "better" material? Stop trying to convince me I'm wrong because I'm not wrong here. I have encountered many folks like you who tell me I'm not doing it the way of perfect standards. So thank you. Your "kind" keeps my fire going!

    Unfortunately, you expect a safety margin of obtuse levels. Mind you I am in the foothills of Appalachia. OSHA? Commercial job site? Non existent. I deal with farmers, loggers and down home excavation companies. They get "tickled" over me wearing a hardhat and reflective safety vest onto a state bridge job site.

    Also, apparently you have never seen one of these on a little utility trailer or a small truck. Or you did and demanded it be mounted on a 5 ton trailer.


    Sent from my moto e6 using Tapatalk

  2. #27
    Join Date
    Sep 2013
    Location
    central Wis.
    Posts
    5,660
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Quote Originally Posted by liberty_metal_worx View Post
    10k? For a trailer with a SMALL crane, a welder and some tools? I gotta disagree with ya there. I think you also missed the part where the trailer will be purpose built. So yes it will handle the crane. 4" channel has its limits, yes. Lucky for me those limits are easily overcome by good engineering. Unless you want to buy me some "better" material? Stop trying to convince me I'm wrong because I'm not wrong here. I have encountered many folks like you who tell me I'm not doing it the way of perfect standards. So thank you. Your "kind" keeps my fire going!

    Unfortunately, you expect a safety margin of obtuse levels. Mind you I am in the foothills of Appalachia. OSHA? Commercial job site? Non existent. I deal with farmers, loggers and down home excavation companies. They get "tickled" over me wearing a hardhat and reflective safety vest onto a state bridge job site.

    Also, apparently you have never seen one of these on a little utility trailer or a small truck. Or you did and demanded it be mounted on a 5 ton trailer.


    Sent from my moto e6 using Tapatalk
    Why ask the questions if your not prepared for answers you don't want to hear. If you want "way to go" and " attaboys" youtube would be a better platform especially if you can throw in a clickbait hottie.

  3. #28
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    You are correct. Asking questions to a large group of different walks of life gets many different answers. What exactly are you saying though? I'm not here whining about someone telling me my plan just plain sucks. But if I disagree that my project should be built to skyscraper standards, this is suddenly not the place for me.

    Just what are you getting at? Why do you feel so compelled to nudge me into your way of thinking with your weak passive agressive comments? I am simply keeping the wheat separated from the chaff in this thread.

    Anyway, I'm hoping to get started this week. I've got some excavator work to do today or I would be harvesting my undersized channel from a weak camper frame. And please don't call OSHA because I won't have safety watch or a foreman on the "job site" today. And I didn't call 811. And I won't have a pilot service escorting me down the road while tramming the machine. And I don't even have a strobe on the machine. Dang. How do I sleep at night?

    Sent from my moto e6 using Tapatalk

  4. #29
    Join Date
    Sep 2013
    Location
    central Wis.
    Posts
    5,660
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    First of all no one mentioned " skyscraper standards" just real life concerns based on real life experiences. Most light duty cranes are typically mounted near the rear axle on a truck for a reason. Obviously there are exceptions but they use a heavy frame and heavy outriggers for a reason. The very front of a trailer near the tounge is not only the most unstable part of a trailer but generally the weakest as well. In all honesty I could care less what you do since in the end it very well could make out to be some good entertainment. I'm not trying to get anyone to agree with me if they have a differing opinion but coming off as a complete dckhead when someone tells you your idea is anywhere from flawed to fcked. I've dealt with many like you in the past and as I told them," do what you want, your going to do it anyways". One free bit of advice I will give is try to incorporate an X shape into the frame as it will do the most to eliminate twist without adding a lot of weight.

  5. #30
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    I like "X" brace. I was thinking of doing one from the front of the axle to the wrapped-style tongue.

    As far as the reason for mounting locations on a service body, it is mounted on the rear corner for practical reasons. And it isn't just bolted on the box. You have to build a sub frame because guess what! The service body is not ridgid enough to support a crane.

    Let's just pretend this trailer won't have an axle. I've decided to install hover pods on all four corners. They are powered by a hyper-lithium warp drive and are rated for 20 kajillitons of multi-directional gravitational torsion. I'm still using the old Bobcat for welding power out of nostalgia. And I like hyphenated words.

    Here is the outrigger suggested for my crane model. Note that it is far from substantial.

    Sent from my moto e6 using Tapatalk

  6. #31
    Join Date
    Mar 2015
    Posts
    206
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Well I am not very smart but comments like you made in your last paragraph will probably limit the amount of constructive suggestions you could have had so good luck

  7. Likes liberty_metal_worx liked this post
  8. #32
    Join Date
    Sep 2005
    Location
    Cave Creek AZ
    Posts
    3,256
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    That harbor freight crane you pictured ain’t no Venturo that you said you had. 2500 pounds at 14’ reach is a heck of a lot more crane than that. Should be an ET8K, but older. If what you really have is what you pictured then this whole thread is void, because it is not what you said you had.
    Attached Images Attached Images  

  9. #33
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Like I said. 2200lbs max ET6KR

    Sent from my moto e6 using Tapatalk

  10. #34
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Boom

    Sent from my moto e6 using Tapatalk

  11. #35
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Quote Originally Posted by Leogl View Post
    Well I am not very smart but comments like you made in your last paragraph will probably limit the amount of constructive suggestions you could have had so good luck
    Sarcasm:

    "Sarcasm is the use of words usually used to either mock or annoy someone, or for humorous purposes.[1] Sarcasm may employ ambivalence,[2] although it is not necessarily ironic.[3] Most noticeable in spoken word, sarcasm is mainly distinguished by the inflection with which it is spoken[4] and is largely context-dependent."

    "Understanding the subtlety of this usage requires second-order interpretation of the speaker's or writer's intentions; different parts of the brain must work together to understand sarcasm. This sophisticated understanding can be lacking in some people with certain forms of brain damage, dementia and sometimes autism, and this perception has been located by MRI in the right parahippocampal gyrus. Research has shown that people with damage in the prefrontal cortex have difficulty understanding non-verbal aspects of language like tone....."

    (https://en.wikipedia.org/wiki/Sarcasm)

    Sent from my moto e6 using Tapatalk

  12. #36
    Join Date
    Apr 2006
    Location
    Soda springs,Id
    Posts
    5,379
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    I've come to the conclusion the OP came here looking, not for advice, but an argument. Upon reading his qualifications he shouldn't need advice anyway.
    Ol' Stonebreaker
    "Experience is the name everyone gives to their mistakes"
    Hobart G-213 portable
    Miller 175 mig
    Miller thunderbolt ac/dc stick
    Victor O/A setup
    Makita chop saw

  13. Likes Dave66 liked this post
  14. #37
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Did anyone read the first post? Asking for a friend........

    Sent from my moto e6 using Tapatalk

  15. #38
    Join Date
    Jun 2012
    Location
    Sebeka and Bemidji MN
    Posts
    14,835
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Quote Originally Posted by liberty_metal_worx View Post
    Has anyone mounted a crane on their welding trailer? I've got a Venturo 6'/10'/14' 2200lbs capacity crane with power rotation. I was going to put it on my flatbed but that truck is currently down and I'm building a trailer for mobile welding. Really just going after general repair and such. I get mostly equipment repairs and want to keep it away from the shop if I can help it. I just bought a Bobcat 225 and serviced it. Now it's time for a trailer build.

    I have a stripped frame with axle from a '76 Wilderness 5th wheel. It has a single 5k axle. What I like about it is it has a 4" channel frame and the two leg landing gear. I'm wondering if I mount the crane up front on a pedestal built into the landing gear bulkhead if the landing gear would be strong enough to serve as an outrigger. The manual only calls for a drop down style support. It's not really an actual outrigger I guess. My other worry is tongue weight. I would like to have the welder behind the landing gear as well with the control panel on the driver's side. The battery(s) and tanks on the front side of the bulkhead. I will build this trailer as a bumper pull. I have two bed side boxes and a couple trailer boxes for storage. I need space on the trailer to transport bulk items and materials. I would also like to incorporate a material rack of sorts but I don't like the possibility of interference with the cranes full range of motion. It will be a balancing act in need of a good floor plan. I need to be able to pull this trailer with an suv if I have to. Should be doable.

    Any pics out there of a similar build?
    Quote Originally Posted by liberty_metal_worx View Post
    Some food for thought for sure.

    First, let's consider that my qualifications and training are up to par. I have received formal training in overhead cranes, heavy wreckers, and rigging. Ive hauled heavy steel with B trains and sleds. Operated overhead cranes, mobiles and wreckers. A 2200lbs max cap service crane is a tinker toy for me. However I always respect equipment and use safe working practices. I will also properly balance the load out on this trailer. It will not be overloaded. My SUV can tow a max of 6000lbs. The welder is 600+/-, crane is 545, tool boxes are aluminum, I estimate no more than 200lbs in tools as I like to pick light. Then the oxy and fuel tanks. Max loaded should be around 2k. Trailer will be about 5x8-10. I think. So let's say 3k tare weight on a 5k axle. That leaves me plenty for material or whatever. As for being heavy enough for the crane, that won't be a problem. The crane sub frame will be built according to specs in the manual. No ballast is required when the proper rigging is deployed. Which in this case, the manual calls for a drop leg on the outboard side of the crane. No extended outrigger required. I'm trying to figure if the landing gear leg is up to snuff. The trailer is going to be cut down for the channel, axle, and landing gear. A new trailer will be built for the purpose. I would have elaborated in my first post but I didnt realize this forum was so technically qualified.

    Im hoping to make this a build thread if I can get my pics up. And if I have the time to keep it up. I've always wanted to share a build. I've been planning a mobile setup for years now. My truck is out of service needing a head gasket and cab swap. So a trailer is my best option. I have been very sick for about 3 years and am behind on everything. Trying to get back going now that I'm "on the mend" so to say.
    A few thoughts. Trailers with cranes are handy, though limited compared to truck mounted (in my opinion).
    Your flat bed is a much better platform for it. Having welded from my trailer, I found I didn't really like it that much since it was harder to get into tight areas. Fortunately it wasn't wider than the truck, so that helped.

    Receiving training in operation of cranes is not qualifications to design and build a trailer to mount one.
    I always keep in mind that what I do is a "best guess" based on experience and some math - which is not the same as engineering.
    The fact that the manual has specs for the sub-frame is super handy though.

    There are several welders on this website who can help you fine-tune your design once you have one. You may need "thick skin" during that process - lol.
    I would not discount their opinions immediately - I know I don't

    I mounted a hand operated crane on my small trailer once. It was kind of nice, but the weight was limited to lifting vehicle engines, generators and such.
    Even with that small amount of weight, the trailer enjoyed quite a range of motion...and being hand operated, the crane didn't like rotating, and then would rotate wildly. Fortunately yours is power rotation.

    Good luck with your build
    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

    Syncro 350
    Invertec v250-s
    Thermal Arc 161 and 300
    MM210
    Dialarc
    Tried being normal once, didn't take....I think it was a Tuesday.

  16. Likes liberty_metal_worx liked this post
  17. #39
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Quote Originally Posted by MinnesotaDave View Post
    A few thoughts. Trailers with cranes are handy, though limited compared to truck mounted (in my opinion).
    Your flat bed is a much better platform for it. Having welded from my trailer, I found I didn't really like it that much since it was harder to get into tight areas. Fortunately it wasn't wider than the truck, so that helped.

    Receiving training in operation of cranes is not qualifications to design and build a trailer to mount one.
    I always keep in mind that what I do is a "best guess" based on experience and some math - which is not the same as engineering.
    The fact that the manual has specs for the sub-frame is super handy though.

    There are several welders on this website who can help you fine-tune your design once you have one. You may need "thick skin" during that process - lol.
    I would not discount their opinions immediately - I know I don't

    I mounted a hand operated crane on my small trailer once. It was kind of nice, but the weight was limited to lifting vehicle engines, generators and such.
    Even with that small amount of weight, the trailer enjoyed quite a range of motion...and being hand operated, the crane didn't like rotating, and then would rotate wildly. Fortunately yours is power rotation.

    Good luck with your build
    Thanks for your awesome reply!

    I am sarcastic and overall a light hearted person. Very thick skinned. I certainly don't mean to "offend" anyone but I do let things fly.

    By "qualified" I was referring to the operation of equipment only. I am professionally qualified to operate a myriad of different kinds of equipment on and off road.

    I was holding out for the truck because I don't want a welding trailer. But I don't have a foothold in mobile work yet even though there is not one person doing it in the whole county. I can get this trailer going quicker than my truck. And it can be pulled by any of my other vehicles. I gotta have the crane. I have nerve damage in my back, legs, and foot. As I get older it's getting worse. I can't do the things I could just a few years ago and I'm still young. And I'm stubborn and hard headed.


    About the trailer:

    The deck will be 5x8. There is a bulkhead built for the landing gear that I'm keeping. The tongue will be 3'6" from the ball to the bulkhead. The axle where it sits now is 77" on center from the bulkhead which is the base measurement for the deck length.

    I'm thinking about keeping the axle where it is. I can mount the crane on the passenger side centered over the axle and the welder on the driver side with the control panel facing rearward. The crane will rest on the bulkhead when in its stowed position. The bottles, toolboxes, and other gear will be in front of or behind the bulkhead. I will adjust the position of the welder and other things to help gain some tongue weight and balance.

    With the crane at the rear most passenger corner it has the best working range of motion. I can pull alongside or back up to the work area. That leaves a platform to work from on the side of the deck between the crane and bulkhead. Simple outriggers shall be devised. The welder will be on the driver's side to leave room for material to be loaded down the center. I can overhang materials off the rear by 5'(or is it 4'?) so that gives me 16' from front of tongue to the legal overhang allowance. With appropriate flagging of course. Most importantly I can fit a full 4x8 sheet or sign if you will.

    If the axle needs to be moved forward I will do that last. I want to see if I can get it balanced out with the way it is first. I am skeptical myself, but it won't hurt to try.

    Okay, the artillery range is hot. Let it fly

    Sent from my moto e6 using Tapatalk

  18. #40
    Join Date
    Apr 2006
    Location
    Soda springs,Id
    Posts
    5,379
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Like minnesota dave I have a small hand built crane mounted on the back of my 5'x8' tlr. It has a long reach hyd jack to attain boom angle and a hand crank winch with an optional snatch block. I have a spacer and a small bottle jack to put under the crane swivel to apply the crane load to the ground. The most I've picked with it is my 700 lb portable welder and IMO that was the limit. It does the job for me and I know it's limitations.
    Ol' Stonebreaker
    "Experience is the name everyone gives to their mistakes"
    Hobart G-213 portable
    Miller 175 mig
    Miller thunderbolt ac/dc stick
    Victor O/A setup
    Makita chop saw

  19. Likes liberty_metal_worx liked this post
  20. #41
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Here is a little doodle I did on Qcad. It is a pic taken with my phone as I'm not at the shop and only have my phone for internet access. The yellow lines if you can discern them indicate weight center of the machines and axle to tongue center point. The bottom sample is with the axle centered under the deck. I would probably turn the welder 90* in that configuration. But I like the top better. I just have to wait and see on the axle location.

    Sent from my moto e6 using Tapatalk

  21. #42
    Join Date
    Sep 2013
    Location
    central Wis.
    Posts
    5,660
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    You mentioned travel trailer landing gear. Where are they in relation to this? A foot or so in from the outside front? Or something that can be installed elsewhere? Obviously if using the RR mount you will need to the strongest outrigger at that point, and then some way to level and stabilize the trailer at opposing points.

  22. Likes liberty_metal_worx liked this post
  23. #43
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Quote Originally Posted by M J D View Post
    You mentioned travel trailer landing gear. Where are they in relation to this? A foot or so in from the outside front? Or something that can be installed elsewhere? Obviously if using the RR mount you will need to the strongest outrigger at that point, and then some way to level and stabilize the trailer at opposing points.
    The landing gear is at the front bulkhead where the tongue meets the deck outboard the bulkhead channel frame. It is comprised of two legs with one handle that controls them simultaneously. They are rated between 2000-2500 each according to what information I've gathered.

    I think I can tie the rear outrigger mounts into the crane subframe. Which it is a pseudo subframe as it will be built into the trailer frame itself. I plan to use some angle or channel across the bottom to tie it all together. I will have plenty of clearance between the axle and trailer frame. I just don't want to get too terribly heavy but enough to prevent over stressing the frame. Some flex is fine with me.

    Sent from my moto e6 using Tapatalk

  24. #44
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    I think I will be lowering the landing gear. I am flipping the drop axle and mounting it under the springs. The dealerships would do this back in the day because these campers sat so low.

    Sent from my moto e6 using Tapatalk

  25. #45
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Name:  WeldingTrailer.jpeg
Views: 168
Size:  70.8 KB

    Here is a completed sketch of the construction. I just have the back two crossmembers to tack in. Then I will bring it in the shop and weld it up. Im leaving the axle where it is for now. It should be balanced well enough where it will pull nice without too much tongue weight.

  26. #46
    Join Date
    Sep 2013
    Location
    central Wis.
    Posts
    5,660
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Not ideal for tounge weight but really good as far as crane placement. Always better to have more tounge weight than less than, provided it's not too drastic.

  27. #47
    Join Date
    Mar 2015
    Posts
    206
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    I am going to say if you move that axle all the way back like that picture you better have a good truck to pull it cause you are going to be tongue heavy ! I have had a couple of welding trailers so be prepared if you move that axle all the way back .

  28. #48
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Thanks. I have calculated the the weight fore and aft of the axle. This includes the frame and equipment. The only thing I did not account for is the weight of the landing gear which is moot IMO. It won't exceed the limitations of my vehicles, but it's on the hefty side.

    Sent from my moto e6 using Tapatalk

  29. #49
    Join Date
    Apr 2021
    Posts
    54
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Oh and that is where the axle is already mounted on the frame. If I don't like the location I plan to move it. But no sense in moving it if I don't have to.

    Sent from my moto e6 using Tapatalk

  30. #50
    Join Date
    Sep 2013
    Location
    central Wis.
    Posts
    5,660
    Post Thanks / Like

    Re: Mobile Welding Trailer w/crane

    Yeah might as well see how it works.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Page generated in 1,628,094,153.14831 seconds with 13 queries