Re: Air-spade I've had an air spade for almost 12 years and found that it paid for itself in less than 30 days of use.
Root collar exams by hand would take two men 6 to 8 hours - with an air spade, 1 man 15 to 30 minutes - 2 hours for really tough ones.
We rented a compressor (185 cfm) at first for about $45.00 per day. We bought a used compressor after about a year of renting one and found that we use the air spade even more often now that we own a compressor. (Used compressors work fine and are considerably cheaper than new. )
Going behind our competitors we find that they stop as soon as they find and remove a single girdling root (GR). They leave behind another dozen or more GR's that continue on down the root collar or out the root flares. |