This video shows us packing out our very first tire in about 5 minutes with a pneumatic backfill tamper:
- It is fast as you can shovel dirt;
- Not as tiring as the sledge hammer method.
- Sides were a little softer than hand pounding. Two sledge laps pound the tire to totally firm – about 20 hits – under 2 minutes of hand pounding.
In the background there is a 9 hp air compressor. The compressor is big enough to drive about any air tool – concrete sprayer, jack hammer, insulation sprayer etc. It was $1K at Harbor Freight, the tamper was $250 on ebay.
If you’ve never pounded a tire with a sledge hammer. The sledges are about 8 lbs and it takes about 150-200 hits to properly firm a tire. For most humans this many hits take about 10-30 minutes – and each tire is quite tiring. Two strong people can pound 20-40 tires per day. Most Earthships use 800+ tires. This method brings that number to 150+ tires/day for a 2 person team.