This article shows an experiment I did to create a small DIY log arch out of black iron pipe.
In order to move logs around by hand and by myself I needed some mechanical advantage.
Within the sawmill and timber industries log arches are a pretty common way to move logs. At it’s simplest a log arch is just a fulcrum on wheels.
It is rolled over a log and the log is winched up into it so that one 9or both ends) are suspended allowing less friction on the ground.
Log arches tend to cost $1000 or more so DIY arches are common. However, large arches the size I really need require welding skills I simply do not have yet.
Looking at what was available I decided I would build a small log arch using black iron pipe to see if it was feasible to do so before investing in the larger pipe to make the log arch I needed.
- I found that I could piece together fittings and that 3/4 bolts would screw into pipe elbows.
- So I bolted two wheels into two elbows
- I then screwed those elbows into 1 foot pipe nipples
- Next, I ran them into 90 degree elbows and connected the two sides with a T.
- In the T went another 1 foot pipe elbow that I could slide a large piece of conduit into to give leverage.
Just screwing the pipes together did not work, as when weight was put on the contraction all the connections twisted.
I went back to the house and used my cheap harbor freight welder to tack all the connections together.
The welding helped and I could use this to pull logs around the homestead.
I haven’t tried this with large logs and I haven’t got around to doing it with the larger pipe.
In all honesty I really want to either learn how to really weld or find a friend who has a shop so I can build a true log arch.
Until then my small DIY log arch will have to do.