Posted by Billy NY on May 15, 2013 at 13:58:51 from (188.8.131.52):
In Reply to: Re: roto tiller posted by Hal/ Eastern WA on May 14, 2013 at 14:42:37:
I would agree. The problem with rocks are that the ones in the subsoil under the top soil you are working, being embedded and held firmly in that subsoil, tines will grab or leverage quite a bit off them. In that case, its better to raise the depth up, tines won't hit so hard. Another thing is being smart with the throttle, the 7HP kohler K161 in my horse is just perfect, it has enough torque at lower RPM's to cut just fine, slower but so much easier on the operator. Once you have that soil worked up, or you have cleaned or excavated out the rocky soil, replaced with clean top soil, they work flawlessly. I moldboard plow first for more than one reason here, one is to displace large rocks underneath, part of one garden was loaded with them, the other side you can run full depth and full throttle if you like, soil was deeper, and cleaner. Favoring the throttle per the conditions is one of the secrets of using these in less desirable soils. I would state that using one of these to break new ground, that is sod bound with rocks, will be a long tedious endeavor, with lots of jerking and pulling, but even with the rock laden soils I can run it with one hand, just not at full throttle or depth in some areas. Soil with moisture, like the clay/loam/gravel here are a lot easier to till, let it dry out too much, its a chore, best left to a plow or similar if can be done. We have a patch of soil at the other place that is literally old horse manure and bedding broke down, 4 feet thick or so, and its like walking on a soft sponge, roots take no time to go deep, the other Troy Bilt in our family, a 8Hp kohler magnum, is so easy to use in a patch like that, almost hard to get traction, just sinks in, sure as heck wish my garden plots at home were like that, you can easily hand cultivate it to remove weeds.
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