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FREEDGUY 
Orange Level Access
Joined: 15 Apr 2017
Location: South West Mich
Points: 5396
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 Topic: Concrete Mixer ?
Posted: 13 Aug 2021 at 7:23pm |
In our area, the concrete trucks have loading/discharge apparatus above the operators cab. While down in Florida earlier this summer, I saw old school rear discharge trucks along the roadways  . Just curious as to why the "ass end" system is still considered feasible as far as getting into a job site ?
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Lars(wi)
Orange Level Access
Joined: 14 Sep 2009
Location: Permian Basin
Points: 8147
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Posted: 13 Aug 2021 at 7:52pm |
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You either drive in then back out, or you back in then drive out. Both probably have their advantages. Around here all the cement companies use overwhelming majority of the the rear-discharge mixers.
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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Stan IL&TN
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Joined: 13 Sep 2009
Location: Elvis Land
Points: 6730
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Posted: 13 Aug 2021 at 8:23pm |
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It may have to do with competition in the area or it could be economics as I bet the rear discharge type is cheaper to purchase?
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1957 WD45 dad's first AC
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 13 Aug 2021 at 9:20pm |
Small local guys use the cheaper , older rear dump...... Larger, bigger jobs use the front dump. Operator runs chute / dump from the cab, watching what he is doing.. Cost more $$.
Rear dump may be preferred on a road job where you back up, then dump as you pull forward and GO.
Edited by steve(ill) - 13 Aug 2021 at 9:22pm
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Like them all, but love the "B"s.
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Kiwi
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Joined: 23 Jan 2018
Location: New zealand
Points: 390
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Posted: 13 Aug 2021 at 11:36pm |
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All rear discharge concrete trucks here but everyone uses a concrete pump to get the concrete to where it’s needed
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
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Posted: 14 Aug 2021 at 5:58am |
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same as Kiwi ,here in Ontario though I'm led to believe the few 'drum over driver' rigs will carry more concrete ,as they have 4 steering tires ??
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 34297
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Posted: 14 Aug 2021 at 6:12am |
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Know of only two companies in MO using front discharge trucks bought on a chance were better but proved expensive and unnecessary. Work well back east in narrower confine city zones where driver can visually ‘see’ better to get into a tight point of discharge otherwise rear discharge are running similarly sized drums.
Nearly every mixer today is a 10-12 yd drum filled to legal limits for the area of use, older equipment of thirty years ago stayed under 10yd most at that time being 8yd
As I started as a mechanic a 6-7 yard mixer with a pony engine and not on hydraulics drive was huge.
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plummerscarin
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Joined: 22 Jun 2015
Location: ia
Points: 3975
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Posted: 14 Aug 2021 at 6:59am |
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Seems each has an advantage in the area they work/designed for. Wouldn't know the myself. All this talk reminds me of a mixer dad brought home from auction decades ago. Ford F3 with open top. Rear and side discharge with a big crank to tilt the tub. Mom wouldn't talk to him for week
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Thad in AR.
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Joined: 12 Sep 2009
Location: Arkansas
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Posted: 14 Aug 2021 at 7:19am |
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All the trucks here in the Ozarks are rear discharge. The bigger trucks have a tag axle that sticks way back. It can be raised above the chute for pouring. They don’t use these in tight places.
Most trucks here have to run a yard or more shy of full to keep from spilling on the steep hills.
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NEVER green
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Joined: 28 Feb 2013
Location: MN.
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Posted: 16 Aug 2021 at 5:15pm |
 Kiwi wrote:
All rear discharge concrete trucks here but everyone uses a concrete pump to get the concrete to where it’s needed |
What???? We still push buggies, cept up big hills.
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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thendrix
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Joined: 04 Feb 2013
Location: Fairmount GA
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Posted: 16 Aug 2021 at 5:20pm |
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Ernst is the only company that uses front discharge trucks here that I know of. The rest are still rear discharge. See some pumpers here and there in the subdivisions. I figure they're mostly where people are building pools or water and sewer is already in place.
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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan
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tadams(OH)
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Joined: 17 Sep 2009
Location: Jeromesville, O
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Posted: 17 Aug 2021 at 2:18pm |
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Most around this area in Ohio are rear, my son said the front are more expensive upkeep and are down more
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Thad in AR.
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Posted: 18 Aug 2021 at 5:06pm |
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Wow one of the new Pete’s with that rear tag trailer/axle showed on our job. I told the driver what a nice new truck.
Soon as we started pouring the hydraulics for the chute quit. We were laying chutes and plywood on the ground and drug 9 yards of concrete. What should have been an easy pour turned to a real chore.
I’m wore out.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 34297
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Posted: 18 Aug 2021 at 5:13pm |
tadams(OH) wrote:
Most around this area in Ohio are rear, my son said the front are more expensive upkeep and are down more |
Front Discharge are a mess, Engine AT the rear, extremely complicated drive train, ONLY automatic Transmissions, all the slop at the discharge end winds up ON the Cab and cab glass.
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