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Author Topic: Log Loading Arch out of timbers.  (Read 4799 times)

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Offline firefighter ontheside

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Log Loading Arch out of timbers.
« on: July 18, 2018, 09:00:54 AM »
Has anyone builtor seen one built out of timbers instead of steel.  I feel like I could mill some yellow pine 4x4ís and put together a V shaped loader.  I would make it fairly tall(8feet) to avoid having to lower it down so far.  I would possibly even hang a chain hoist from it so I could raise or lower the log independent of the winch thatís pulling on the loader.  Iím a woodworker/carpenter and not a metal worker, so Iím just thinking of something I can build and not have someone else weld it for me, plus I can cut timbers, but Iíd have to buy steel.  Thanks for any input.
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Re: Log Loading Arch out of timbers.
« Reply #1 on: July 18, 2018, 01:24:27 PM »
Iíve got most of a plan worked out.  I bought bolts and just milled some yellow pine 5x5ís so Iím gonna go out it together.  Hopefully pics later.
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Re: Log Loading Arch out of timbers.
« Reply #2 on: July 18, 2018, 05:51:08 PM »
I have more work to do, but I have the arch together and had it on the trailer.  Iím just gonna use load straps to hang the chain hoist.



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Re: Log Loading Arch out of timbers.
« Reply #3 on: July 18, 2018, 08:57:37 PM »
Why not. Back in the old days of cutting with cross cut and horses they used big wood cranes and yarder towers.

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Re: Log Loading Arch out of timbers.
« Reply #4 on: July 19, 2018, 09:38:29 PM »
Nothing wrong with that 8)

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Re: Log Loading Arch out of timbers.
« Reply #5 on: July 29, 2018, 12:10:11 PM »
This was proof of concept, but my little 1 ton winch didnít have the guts to do the job.  So, tomorrow I will go get a bigger winch, instead of going to get logs on the trailer.


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Offline ljohnsaw

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Re: Log Loading Arch out of timbers.
« Reply #6 on: July 29, 2018, 04:24:12 PM »
If you put a snatch block on the arch you would have doubled your winch power.  Might even need to do that with your new winch depending on what you spend.
John Sawicky

Just North-East of Sacramento...

SkyTrak 9038, Davis Little Monster backhoe, Case 16+4 Trencher, Home Built 42" capacity/32" cut Bandmill up to 54' long - using it all to build a timber frame cabin.

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Re: Log Loading Arch out of timbers.
« Reply #7 on: July 29, 2018, 04:30:20 PM »
I talked about a pulley, but if I do that I lose half of the length of my cable which is only about 30 feet on my little winch.  The cable wouldnít be long enough.  Iím planning to pick up a harbor freight 9000 winch tomorrow.
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Re: Log Loading Arch out of timbers.
« Reply #8 on: July 29, 2018, 04:42:36 PM »
IF the measurements work out, you extend your cable all the way and have a little (5-10'?) past the snatch block.  Then use more cable or chain to come back towards the winch.  You need the most lifting power at the beginning and the snatch block will give you double.  If the winch hook starts to catch when the arch is at the top, that's ok since you don't need much power at that point.  Make sense?  Also, the less wire rope on the winch spool, the better.  The winch rating will give you a table that says the winch is good for the rated amount for the first wrap layer.  Then it drops off considerably for each additional layer of wire rope.  My cheapo HF 1,500# winch dropped down to less than 800# when it has 3 layers.
John Sawicky

Just North-East of Sacramento...

SkyTrak 9038, Davis Little Monster backhoe, Case 16+4 Trencher, Home Built 42" capacity/32" cut Bandmill up to 54' long - using it all to build a timber frame cabin.

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Re: Log Loading Arch out of timbers.
« Reply #9 on: July 29, 2018, 05:59:17 PM »
Thanks John.  Iím pretty well familiar with mechanical advantage systems.  We have to know how to build all kinds with rope and pulleys and other hardware on the FEMAtask Force Iím on.  

Iím gonna go ahead and get the 9000 so I donít have to deal with more setup.  Iím trying to save time when Iím picking up logs on site.  Iíd really like to be able to load a 20í log in one fell swoop instead of cutting it in sections.  At home I can use my tractor to move stuff around.
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Re: Log Loading Arch out of timbers.
« Reply #10 on: July 29, 2018, 06:16:21 PM »
OK, good.  Meant no disrespect to your knowledge.  I didn't know your background.  A 20' oak is going to be mighty heavy!!!
John Sawicky

Just North-East of Sacramento...

SkyTrak 9038, Davis Little Monster backhoe, Case 16+4 Trencher, Home Built 42" capacity/32" cut Bandmill up to 54' long - using it all to build a timber frame cabin.

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Re: Log Loading Arch out of timbers.
« Reply #11 on: July 29, 2018, 06:35:02 PM »
None taken John.  Thanks for your suggestions.
PS....Iíve been following your build.  Hope youíre safe from fires.
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Re: Log Loading Arch out of timbers.
« Reply #12 on: August 01, 2018, 09:52:45 PM »
I decided to get the 5000 lb winch and not the 9000.  Iím glad I did, because I saved myself about $100 and it worked perfectly today.  I loaded a silver maple log that was about 13í long and 24Ē diameter.  Didnít even slow the winch down.  Hereís a video of loading a smaller elm log.
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Re: Log Loading Arch out of timbers.
« Reply #13 on: August 02, 2018, 07:45:48 AM »
are you just grabbing the log on the frame then using the winch to pull the frame?

Doesn't the frame slam to the bed like that?
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Re: Log Loading Arch out of timbers.
« Reply #14 on: August 02, 2018, 08:35:34 AM »
Looks like its gettin the job done
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Re: Log Loading Arch out of timbers.
« Reply #15 on: August 02, 2018, 10:38:20 AM »
That went nice and quick.  What winch did you end up getting?  From HF?
John Sawicky

Just North-East of Sacramento...

SkyTrak 9038, Davis Little Monster backhoe, Case 16+4 Trencher, Home Built 42" capacity/32" cut Bandmill up to 54' long - using it all to build a timber frame cabin.

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Re: Log Loading Arch out of timbers.
« Reply #16 on: August 02, 2018, 11:20:30 AM »
Crusarius, yes thatís what Iím doing.  On small logs that can happen.  I only pick up one end of any log so that the other end drags, but the small logs donít have enough friction to slow it down.  On those, I stop the A frame at vertical and then just drag the log the rest of the way with the winch.  
On large logs there is enough friction that the winch has to pull the frame down.  Definitely donít want the frame slamming down.  Might even make some kind of support that stops the frame at about 45 deg.

John, I got the 5000 lbs winch.  It was on sale for 179 I believe and with a coupon I paid about 145.
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Re: Log Loading Arch out of timbers.
« Reply #17 on: August 02, 2018, 11:26:58 AM »
ok here is an idea that may be hard to explain. Put a set of legs off the back side of the frame. but instead of making them rigid to the frame connect them using something that acts like a hinge. then get a pair of gas charged shocks to connect to the frame and the end of the leg. Cheapest Monroe ones you can get. then as it cams over the leg will make contact with the trailer then start to compress the shock and slow the fall. The leg setup should look like a triangle when your done.

wammo. Fix to camming over and slamming the deck. Just make sure if you want to lay it down flat again you have some type of quick release. Or you need to figure the geometry out to make it lay flat.

and when you figure it out I want pics and measurements :) save me the time of engineering it. :)

After thought, you may need more than 1 shock but I would start with 1 per side.
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Re: Log Loading Arch out of timbers.
« Reply #18 on: August 02, 2018, 04:32:39 PM »
Might even make some kind of support that stops the frame at about 45 deg. John, I got the 5000 lbs winch. It was on sale for 179 I believe and with a coupon I paid about 145.

Great price.  My old Propane log arch had an ancient winch on it.  Slow and kind of strong.  Might have to upgrade to this one.  Let us know how well it keeps performing, or not.  Does it have a free spool so its easy to let out?  Mine doesn't. :-\

I forget who, but they used a chain on both sides.  Leave enough slack to stop the arch at about 45 degrees both over the trailer and over the tail.  Maybe a little higher over the trailer.  He had the winch cable running free through a snatch block on the arch.  He would let out his line to retrieve the log (if he couldn't back up to it all the way) and chain/choke the log.  Then, retrieve and when the hook hit the snatch block, the arch would raise - never had to stop and re-hook between the retrieve and the lift.
John Sawicky

Just North-East of Sacramento...

SkyTrak 9038, Davis Little Monster backhoe, Case 16+4 Trencher, Home Built 42" capacity/32" cut Bandmill up to 54' long - using it all to build a timber frame cabin.

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Re: Log Loading Arch out of timbers.
« Reply #19 on: August 02, 2018, 04:57:34 PM »
Interesting idea Crusarius.  Iíll see if thatís a possibility.  Iím afraid the legs will land right on my fenders.  Iím not sure if that will be a good thing.  They are fairly strong, but I donít want to smash them.  

Johns idea with the chains could work too.  Could attach a spring and also cushion the landing if it falls.

The HF winch seems weíll made and does have free spool option that is nice for resetting everything.  After a while I could feel that cable was warm as I pulled it out telling me the winch was heating up.
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Stihl 025 and MS291
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