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
 

October 2012- Construction Phase 3

Completing the cylinder heads

 

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We decided to coat our rocker arms in red.

The brass sockets for the rocker arms are degreased and cleaned. They are now ready for pressing-in.

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Pressing-in device with guide pin to position the brass sockets precisely into the rocker arms.

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To improve the heat dissipation to the cylinder our sockets are chemically coated with a layer of nickel on the outside.

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In two steps the sockets are pressed into the cylinders and then honed.

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Here the balls are fitted into the rocker arms that later press on the valve stem.

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Mounting the rocker arms into the cylinder heads. Not a chance without a magnifying glass.

The rocker arm shafts are made of CrNi steal, case-hardened and ground center less.

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Here are the fully mounted rocker arms.

The cylinder heads are screwed together with the cylinder tubes and ready to be mounted into the engine cases.

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