![]() ![]() ![]() I was operating an O&K G350 grader, a 380 hp, 42-ton machine with a 20-foot blade and 4 X almost D7-sized ripper shanks across the back end. yd bowls running, being push-loaded by a 'Kummagutsa' D455A dozer. On one job, building a retention basin for irrigation water, we had 3 X Cat 660B scrapers with 58 cu. And, even though both machines can dig the ground without ripping, if the ripper-equipped machine rips the excavation area before trying to dig it and/or between successive layers, it will be further ahead of the bare machine again, sometimes quite substantially. I have seen it demo-ed time after time, a bare-assed dozer Vs an equivalent dozer with rippers in the same ground - the ripper-equipped will out-perform the bare machine even without using the rippers. To elaborate on Wombat's comments re rippers, a LOTTTA people have the notion that if you can dig it with the blade alone, you don't need rippers. ![]()
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