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Old 11-21-2019, 05:08 AM
ron_van_sommeren is offline
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uomo ludens modellesticus
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near Nijmegen, Netherlands
Joined Apr 2009
120 Posts
Video
Heilemann 2×9cyl.×39cm³ radial

Heilemann videos
www.heilemann-sternmotoren.de (de&eng)



18-Zylinder Doppelstern mit 700 ccm, Probelauf (4 min 26 sec)



With 2:1 reduction
Test 18 Zylinder mit Getriebe (3 min 14 sec)
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Last edited by ron_van_sommeren; 11-27-2019 at 05:09 AM.
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Old 11-21-2019, 04:01 PM
Hinckley Bill is offline
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Hinckley Illinois
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2,202 Posts
What a beautiful piece of machinery!
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Old 11-21-2019, 05:40 PM
wyo69cowboy is offline
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Gettin better 1 [email protected] a time!
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Cody WY
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1,525 Posts
46x50 propeller!
Awesome!
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Old 11-21-2019, 06:05 PM
earlwb is offline
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Grapevine, Texas USA
Joined Oct 2009
188 Posts
WOW! It sort of leaves one speechless and in awe. You could actually build a light plane to fly in with a engine like that.
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Old 11-21-2019, 10:03 PM
airboss/oc is offline
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desert racer
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United States, CA, Orange County
Joined Aug 2007
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wish they had a shroud or at least paint the prop tips , all I could think about is what happens next
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Old 11-21-2019, 10:26 PM
orthobird is online now
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I hammer at 1500 feet
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United States, LA, Shreveport
Joined Apr 2012
8,234 Posts
Silky smooth! What a show of engineering. Whoever designed it and manufactured it is a top dog in my book! WOW.

Seems that a monster motor like that would be fit for a real aircraft, a one seater of sorts. Not for a model airplane? What model airplane would require a 700 CC engine?
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Old 11-22-2019, 09:54 AM
Kiva Flyer is offline
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New Mexico
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1/2 scale P47, mayhaps...?
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Old 11-22-2019, 11:45 AM
ponyboy082662 is offline
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wrongwayfeldman
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United States, AL, Florence
Joined Mar 2010
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I'm curious what that engine cost??
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Old 11-22-2019, 12:46 PM
closetguy is offline
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United States, OH, Berlin Heights
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German engineering and machining what else can be said.
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