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Can anybody tell me the approx. length and diameter of the drum in an Alpenrost? I'm thinking of making a drum roaster, and was wondering what size drum is needed for 1/2 pound batches. homeroast mailing listhttp://lists.sweetmarias.com/mailman/listinfo/homeroast |

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I read somewhere that in general good tumbling action in process drums is to load them to 1/6th volume. Dan < |

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Dan-this is something I too have been curious about-er what is the formula for determining vol in a drum. Been a long time since I worked on problems like this at PU. Thanks |

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--- floyd burton wrote: < |

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David, The drum is @ 9 3/4" long overall by 4 3/4" in diameter The straight cylinder portion is @ 6 3/4" long The open cone-shaped end piece is @ 2 3/4" long and tapers to 3 5/16" at the mouth The closed end is @ 1" long and tapers to @ 4" in diameter Bob Trancho < |

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It has been several decades since I've had to recall this but I think it is pi*r-squared * h. Where pi is 3.14-something r is half the diameter of your drum and h is height, or in this case the length of the drum. Jim gundlach On Tuesday, February 04, 2003, at 02:20PM, floyd burton wrote: < |

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--- Dan Bollinger wrote: < |

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David, Total length is ~250 mm, diameter of perforated portion is 120 mm. Perfd. part of cylinder is 143 mm. Open end taper is 60 mm long, close end taper is 30 mm long. So the roasting volume (perforated portion of cylinder) is about 143 x 60 x 60 x pi mm^3, less a bit for the vanes. Dave Westerville, OH < |

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Sometime around 11:59 2/4/2003, David Westebbe typed: < |