Block for bottle Jack July 22, 2018, 06:35:37 pm Planning a trip in a couple of weeks that has 30 miles of dirt road with no cell phone reception so this LD newbie is getting flat ready. My 23.5 doesn't have lots of outside storage and putting a chunk of 4x6 for the jack to sit on and maybe a 1x6 or two was taking up lots of valuable space. It occurred to me why not just use the square interlocking wheel blocks I have with a piece of 3/4 inch plywood on top for the jack to sit on. Then all I need extra in my storage area is the plywood. Anybody do this or know any reason it wouldn't work?
Re: Block for bottle Jack Reply #1 – July 22, 2018, 07:00:51 pm Just curious...What are your plans for the bottle jack? To level your rig?Kent
Re: Block for bottle Jack Reply #2 – July 22, 2018, 07:05:21 pm Quote from: Kent Heckethorn - July 22, 2018, 07:00:51 pmJust curious...What are your plans for the bottle jack? To level your rig?KentTo change a tire. Don't think the jack would crush the plastic blocks with a piece of plywood on top but I'm not entirely sure.
Re: Block for bottle Jack Reply #3 – July 22, 2018, 07:14:07 pm Interesting. The rig can sure be heavy. You may want to consider two thick pieces of plywood and then place the jack on that if needs be. Plastic leveling blocks may not be very stable and could collapse. That would really stink and you may find yourself in a heap of hurt. 😖I’m sure the others here will chime in soon.Kent
Re: Block for bottle Jack Reply #4 – July 22, 2018, 07:15:51 pm Quote from: Kent Heckethorn - July 22, 2018, 07:14:07 pmInteresting. The rig can sure be heavy. You may want to consider two thick pieces of plywood and then place the jack on that if needs be. Plastic leveling blocks may not be very stable and could collapse. That would really stink and you may find yourself in a heap of hurt. 😖I’m sure the others here will chime in soon.KentThat's my concern too and why I'm curious if anyone has tried this.
Re: Block for bottle Jack Reply #5 – July 22, 2018, 07:42:23 pm Here’s something to consider...https://youtu.be/a7xxo-O-S-oKent 1 Likes
Re: Block for bottle Jack Reply #6 – July 22, 2018, 07:48:57 pm Just thinking out loud here!Locking blocks were likely designed to take the rated load under the tires at standard tire pressures upto say 100 psi spread over the tire contact area. So if I put a 2x6 on top of the locking blocks that is the length of tire contact length, or two for the duals and one 2x6 x10 across the pair, then the bottle jack on top. Shouldn't this spread the load on the locking blocks enough for the locking block to survive the jacking event? Note: LT215 /85 R 16 contact width is about 6" wide.And the LT225/85 R 16 contact width is about 7" wide.Fortunately my 1988 MB came with 2x6 mother ship leveling blocks and plastic locking blocks if needed.
Re: Block for bottle Jack Reply #7 – July 23, 2018, 12:22:59 am Quote from: Sawyer - July 22, 2018, 06:35:37 pm My 23.5 doesn't have lots of outside storage and putting a chunk of 4x6 for the jack to sit on and maybe a 1x6 or two was taking up lots of valuable space. It occurred to me why not just use the square interlocking wheel blocks I have with a piece of 3/4 inch plywood on top for the jack to sit on. Our 23.5' LD doesn't have extra storage either but there is enough room for all the essentials, with careful planning and packing.. I have used Lynx blocks, with plywood topper severals times, as jacking points. True Lynx blocks, not the cheap copies, are very strong and, when used properly, can support a lot of weight .Along with Lynx leveling blocks, 2 pieces of 3/4" plywood , 12" X 18" each, are carried and can be use on top of Lynx blocks. When leveling on soft soil, the plywood boards can be used under the Lynx blocks or just under the tires . They are good for parking on grass.When changing a tire, the 12" x 18" boards allow two Lynx blocks to be used, side by side, at the same time. On top the board, two hydraulic jacks are used. The extra jack is the the extra layer of safety normally provided by a jack stand .The two jacks carried in our LD jacks are tall enough to normally do not require lifting the base the jack, to lift a wheel off the ground. Unless jacking on level concrete, placing a plywood board under the jack(s) helps eliminates shifting, due to settling of the jack in the soil. This is a good practice, along with the blocking of the other wheels.Larry 2 Likes
Re: Block for bottle Jack Reply #8 – July 23, 2018, 08:14:08 am Quote from: rodneyhelfrich - July 22, 2018, 07:48:57 pmJust thinking out loud here!Locking blocks were likely designed to take the rated load under the tires at standard tire pressures upto say 100 psi spread over the tire contact area. So if I put a 2x6 on top of the locking blocks that is the length of tire contact length, or two for the duals and one 2x6 x10 across the pair, then the bottle jack on top. Shouldn't this spread the load on the locking blocks enough for the locking block to survive the jacking event? Note: LT215 /85 R 16 contact width is about 6" wide.And the LT225/85 R 16 contact width is about 7" wide.Fortunately my 1988 MB came with 2x6 mother ship leveling blocks and plastic locking blocks if needed.Your math makes sense to me and follows my line of thinking on this.
Re: Block for bottle Jack Reply #9 – July 23, 2018, 08:20:52 am Quote from: Larry W - July 23, 2018, 12:22:59 amOur 23.5' LD doesn't have extra storage either but there is enough room for all the essentials, with careful planning and packing.. I have used Lynx blocks, with plywood topper severals times, as jacking points. True Lynx blocks, not the cheap copies, are very strong and, when used properly, can support a lot of weight .Along with Lynx leveling blocks, 2 pieces of 3/4" plywood , 12" X 18" each, are carried and can be use on top of Lynx blocks. When leveling on soft soil, the plywood boards can be used under the Lynx blocks or just under the tires . They are good for parking on grass.When changing a tire, the 12" x 18" boards allow two Lynx blocks to be used, side by side, at the same time. On top the board, two hydraulic jacks are used. The extra jack is the the extra layer of safety normally provided by a jack stand .The two jacks carried in our LD jacks are tall enough to normally do not require lifting the base the jack, to lift a wheel off the ground. Unless jacking on level concrete, placing a plywood board under the jack(s) helps eliminates shifting, due to settling of the jack in the soil. This is a good practice, along with the blocking of the other wheels.LarryI have lynx blocks so I think this plan is coming together. I haven't bought the jack yet and just assumed it would not be tall enough when I did because that was an issue on my pickup but maybe the heavier duty jacks are taller or I should shop for a tall one specifically. Might eliminate this whole problem. The one Kent linked to looked like a good one
Re: Block for bottle Jack Reply #10 – July 26, 2018, 06:32:38 pm I use the system you describe, but be careful, the wood on top of the Lynx Levelers can slide if there is an angle. The Lynx Leveler will want to dig into the ground if you have to use them on some dirt surfaces, but that provides nice stability when it reaches maximum depression into the ground. 1 Likes
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