sierratree
TreeHouser
- Joined
- Aug 14, 2011
- Messages
- 171
Feedback, ideas, successes, failures, pitfalls, with 20 ton hydraulic bottle jacks (with steel plate). Thanks.
Wonder if you could tap for a gauge with your jack, Burnham?
Burnham's input re: wind and pressure fluctuations makes real sense. also, would be important to have a pressure guage to read differences as they occur.....lift, etc. a buddy of mine told me yesterday that a silvey has a safety feature that if the jack fails, the plate will lock and won't retract. A good thing to keep the tree upright, but he also said, it makes it quite difficult to remove the jack until you can continue to wedge to get the pressure off of it.
Yesterday we did use a 20 ton with a welded steel plate to convince a roadside haz tree to head off into the woods instead over the roadway..........no cleanup. But my better judgement says if we plan on using a jack more often, just get the Silvey.........
A jack is just a little cylinder that pumps into a larger cylinder with a couple of ball check valves .
How most get blown out is if the load gets so much instead of using the standard jack handle they either stick a cheater pipe on it or the end of a 6 foot spud bar .