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Nice pics Tim. Thanks for sharing.
Kyle C
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Can these machines actually operate fully submerged, provided the operator was wearing proper equipment?
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Cool pictures, I've never understood this machine, is it operated externally by R/C or is the operator on board? I was also wondering what size dozer this would equate to in their regular range? One of the old D155's ? Rowan.
1:25th scale CAT 375L excavator
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Ryanwtod wrote:Can these machines actually operate fully submerged, provided the operator was wearing proper equipment? Yes and they are remote controlled. Kerst
 http://forums.dhsdiecast.com/default.aspx?g=posts&m=1096251
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Quote:kerst Posted: Tuesday, January 08, 2008 1:49:40 PM
Ryanwtod wrote:
Can these machines actually operate fully submerged, provided the operator was wearing proper equipment?
Yes and they are remote controlled.
Kerst
One slight correction... They are radio (Not remote) controlled......Remote controlled uses a wire to connect with the vehicle. 
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Cool pictures, that's a nice machine. Red
 redscustomscalemodels.com
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Cool! I have seen the die-cast model but never actually seen the real machine before. I wonder how the operators "see" what they are doozing. This would be a good application for GPS. Just put an attenna at the top of the snorkel and watch a lcd screen on dry land. Thanks for the pics Tim.
Chris
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That would be fun operating one of those things. a real big rc dozer. jason
NIkl Scale Models
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wow those are awesome, i like how it has a combination bucket/blade... thats a really good idea, and what is that huge thing sticking out the top of it?
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DeWoc19, that's a snorkel! Fresh air in and exhaust out, plus a cool looking amber strobe light and an air horn. And I guess it simply serves for locating the bulldozer.
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That tall tube is the air intake for the engine this controls the deapth of water the machine can work in machine is radio controled the operatpr can view the job by cameras mounted on the machine . I have also heard that the machine can be operated in the conventional manner by a diver. I believe the maching was origonally designed for work in the oyster beds in Japan .The machine was built a the requestof the ministry of construction first machine could work in only 3 metres depth .Machine was redesigned to work in water up to 60 metres in 1970 the newer machine was A.C. electric drive.
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snorkel for the...... engine? since there isnt an operator in there from what im understanding?
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Quote:snorkel for the...... engine? since there isnt an operator in there from what im understanding? The engine needs air becuase the fuel won't burn with out it & it probably has a turbo witch needs a fresh air supply.
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yeah thats what i thought i wasnt sure if there was an operator but then i read there wasnt right after i posted my comment
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Interesting - I've seen stock pics from Komatsu of these machines but never actual working shots of them before.
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Thanks Kerst, does anyone know round about how many of these machines were produced and or how many are still operating? Rowan.
1:25th scale CAT 375L excavator
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Very cool looking machine I recall Shinsi had a small model of this !
Regards
Chet
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I found an old ad of this machine. Unfortunately my scanner died, I would have posted the ad here otherwise. The type is D155W and it is indeed remote RC, but there are also diver-operated direct wire controls. Max working depth is 7m or 23'. It has proven itself since 1968 according to the ad. An optional 7-ton crane attachment can be added. Kerst
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