HEILEMANN STERNMOTOREN
Feinmechanik in Perfektion - handmade in Germany
  • 180ccm SM
  • 350ccm SM
  • 700ccm SM
  • 1. Generation | 9-Zylinder 180 ccm
  • 2. Generation | 9-Zylinder 350 ccm
  • 3. Generation | 18-Zylinder Doppelstern 700 ccm
 

February 2013 - Construction Phase 7

Finishing exhausts and manifolds

 

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New starter with 18V in the picture on the left (on the right the old 12V model)

The new model has a ventilated engine case (exhaust air)

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Drilling the ring muffler. 9 holes on the left, 9 holes on the right.

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Fitting the outlet pipes into the radius of the ring muffler

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Filing down the holes for the outlet pipes. Everything has to be custom-fit.

Otherwise you can’t weld it (0,5 mm wall thickness).

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Bent exhaust manifold for the front cylinders. These still have to be cut or adjusted to the right length.

Somehow it’s getting tighter and tighter.

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Fitting the outlet manifolds in/into the ring muffler

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Here the flange sleeves are welded to the outlet manifolds.

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Customized clip-on outlet pipes and then completely welded.

Variation for the test bench. These still have to be fitted to the right model or replaced.

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The finished welded manifolds with flange sleeves are waiting for assembly.

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After everything is fitted and in its place, the manifolds are stapled in the mounted state.

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After stapling everything is disassembled once again and welded completely.

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Adjustment work once again after welding.

The manifolds are annealed tension-free, so they don’t tear later.

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Now the tail pipes (4) are fitted and also welded.

Then the ring muffler is expanded completely and the plating with nickel is prepared.

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