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  #1  
Old 02-24-2014, 09:36 AM
Rimrock Rimrock is offline
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Default Akerman H14b

Hi, I like to publish some pictures of one of my current projects, an Akerman H14b (~30 tons) excavator in scale 1:Tamiya. I am a bit nostalgic concerning the look of the 70's & 80's machines, which I find more interesting than the current 'wind tunnel optimized' machines of to day

I mainly use aluminium and steel, and put it together useing screws and Loctite 330 'heavy duty' glue. The hydraulics will be from Premacon, but cylinders will be of own production. Will run at 20-22 bar pressure. The shape of the Akerman boom/dipper and under carrige is a bit 'tricky' to re-produce, but I like to make it pretty scale true on the exterior, so I just will put in the extra hours concerning both production and planning. I use a 2D/3D CAD software to create the drawings. Did create the 'machine house' during August 2012, and now has continued work on the machine in the start of 2014.

The Akerman company of Sweden produced excavators from the late 30's to the late 90's when the current owner, VME group (Volvo) from 1991, shut down the production. The VME group purchased the Samsung excavator factory in South Korea instead, at a good price after the financial crises in Asia in the late 90's, and started development of the current Volvo EC series.
Akerman had a large marked share in Northern Europe and the machines where rather advanced for their time periode. They were mainly constructed to have a high capasity regarding moving rocks/heavy material, at low cost/ton, with their rather robuste construction and 'oversized' Volvo Penta Industrial engines. The hydraulic system was said not to be perfectly intended for 'fine leveling' concerning the earlier models. In 1981 Akerman purchased the Hein-Werner excavator plant in Wisconsin US, and several hundred machines were produced there until Volvo took over, and shut down the production.
The last 2-3 years Volvo put their logo on the machines, and the H14 was during the 90's renamed EC300. Many of the newer models from the 90's are still in daily operation, and the older models are popular among farmers. A local company have both a 16 ton and a 40 ton machine from the 80's in operation, both close to 30.000 hours)
Attached Images
File Type: jpg 8600311_720x0.jpg (97.2 KB, 77 views)
File Type: jpg A_H14B_566x228.jpg (30.8 KB, 91 views)

Last edited by Rimrock; 02-24-2014 at 09:47 AM.
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  #2  
Old 02-24-2014, 09:38 AM
Rimrock Rimrock is offline
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Default Re: Akerman H14b

Machine house
Attached Images
File Type: jpg IMG_2702.jpg (68.5 KB, 75 views)
File Type: jpg IMG_2703.jpg (57.0 KB, 68 views)
File Type: jpg IMG_2704.jpg (61.4 KB, 64 views)
File Type: jpg IMG_2705.jpg (81.2 KB, 77 views)
File Type: jpg Aug%202013%20004.jpg (62.2 KB, 75 views)
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  #3  
Old 02-24-2014, 09:42 AM
Rimrock Rimrock is offline
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Default Re: Akerman H14b

Counter weight, 'slewing ring pillar' etc.
Attached Images
File Type: jpg Jan%202014%20maskin%20039.jpg (3.4 KB, 378 views)
File Type: jpg Jan%202014%20maskin%20041.jpg (69.0 KB, 102 views)
File Type: jpg Jan%202014%20maskin%20043.jpg (45.5 KB, 87 views)
File Type: jpg Jan%202014%20maskin%20048.jpg (32.8 KB, 80 views)
File Type: jpg Jan%202014%20maskin%20049.jpg (33.6 KB, 81 views)
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Old 02-24-2014, 09:45 AM
Rimrock Rimrock is offline
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Default Re: Akerman H14b

More pictures from the 'lab'..I will use a internal gear on the slewing pillar, Module 1. Will get a rotaing speed of about 7 rpm, as the original. The postion og the gearmotor can be 'finetuned' from above to reduce play, and can also be pulled out from above for maintenence. Will use 2 bearings on the pillar, that can be tighten towards eachother to reduce play.
Attached Images
File Type: jpg Jan%202014%20maskin%20051.jpg (38.3 KB, 108 views)
File Type: jpg SVING.jpg (44.3 KB, 91 views)
File Type: jpg screen1.jpg (26.4 KB, 94 views)
File Type: jpg Jan%202014%20maskin%20053.jpg (97.3 KB, 95 views)
File Type: jpg Jan%202014%20maskin%20056.jpg (55.7 KB, 99 views)

Last edited by Rimrock; 02-24-2014 at 10:00 AM.
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  #5  
Old 02-24-2014, 10:34 AM
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Rvjimd Rvjimd is offline
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Default Re: Akerman H14b

Very Nice! I like the look of the old machines also, your workmanship looks very good!

Jim
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Old 02-24-2014, 05:10 PM
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Default Re: Akerman H14b

Awesome build skills sir !! , Going to be a great looking excavator..
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Old 03-17-2014, 05:33 PM
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Default Re: Akerman H14b

Hi all, thanks for the comments) Have some more pictures from the progress, I have concentrated mostly on the boom and stick the last periode. Been milling out the end brackets on the boom/stick. Have glued it all together, but will ad a few screws in addition.
Attached Images
File Type: jpg Jan 2014 maskin 060.jpg (86.8 KB, 34 views)
File Type: jpg Jan 2014 maskin 062.jpg (90.3 KB, 32 views)
File Type: jpg Jan 2014 maskin 064.jpg (91.9 KB, 32 views)
File Type: jpg Jan 2014 maskin 065.jpg (94.0 KB, 35 views)
File Type: jpg Jan 2014 maskin 069.jpg (97.8 KB, 37 views)
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Old 03-17-2014, 05:37 PM
Rimrock Rimrock is offline
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Default Re: Akerman H14b

More pictures..
Attached Images
File Type: jpg Jan 2014 maskin 071.jpg (97.6 KB, 42 views)
File Type: jpg Jan 2014 maskin 072.jpg (91.7 KB, 49 views)
File Type: jpg Jan 2014 maskin 076.jpg (92.1 KB, 45 views)
File Type: jpg Jan 2014 maskin 077.jpg (91.0 KB, 44 views)
File Type: jpg Jan 2014 maskin 083.jpg (90.4 KB, 48 views)
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  #9  
Old 03-17-2014, 07:45 PM
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Default Re: Akerman H14b

Rimrock,

You are very talented. I am very impressed. Also thank you for the history lesson to go along with your build. It is great to know these things and helps give the build the character it deserves.

Michael
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  #10  
Old 03-20-2014, 05:33 AM
Rimrock Rimrock is offline
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Default Re: Akerman H14b

Thanks for your inspiring comments, Michael This is my second scratch-build, and hopefully won't be the last) I have built a truck based on Tamiya components earlier on. I look forward to finish the excavator, and to get started moving some gravel..

Have nearly completed the stick and boom now. I did discover that I have used a bit too thick plates in the construction so the items got about 25% heavier than 'to scale'. Well, it's about 0.5 kg/1 lbs 'overweight, but there will be no lack of hydraulic power anyway with my pump setup
Attached Images
File Type: jpg Jan 2014 maskin 088.jpg (93.5 KB, 21 views)
File Type: jpg Jan 2014 maskin 101.jpg (90.2 KB, 22 views)
File Type: jpg Jan 2014 maskin 096.jpg (89.8 KB, 22 views)
File Type: jpg Jan 2014 maskin 100.jpg (88.1 KB, 29 views)
File Type: jpg Jan 2014 maskin 108.jpg (88.3 KB, 29 views)
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Old 03-20-2014, 08:02 AM
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Default Re: Akerman H14b

Nice build, especialy interesting since Åkermans was quite close to where if lived, did also work a couple of summers at their office. Wounder where all drawings did go when they closed office, maybee to some Volvo archive.
It looks like you have a Optimum CNC milling machine, are you happy with this?

/Dan
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Old 03-20-2014, 08:27 AM
ricm ricm is offline
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Default Re: Akerman H14b

great project, looking forward to more pics
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