RESTORATION HAMANN / MERCEDES-EUKLID 38 MS

HAMANN / MERCEDES-EUKLID 38 MS

S N A P - S H O T S from the PROCESS of RESTORATION
****************************************************************
1 & 1/2 disassembled »38MS« from a former repair shop in Dresden
was the gift of a friend: "Make a working one - Challenge! ..."

... After weeks of work there was success ...

Dissasembling as far as necessary shows:
The counter-error is due to a broken tooth...

November 2005 No Operator's Manual - No Service-Manual available... ------------------------------------------------------------------------------ o Opened the machine - Cleaned - Repaired input devices & Carriage cover Made tools for manual-operation... o Unlocked the [X] key by removing temporary a critical lever - Saw that the machine was not adjusted correctly... o Made the appropriate adjustments... o ADD, SUBTRACT, CLEAR works manually & with motor power! o Bent levers - removed rust - oiled - filed... o MULT, DIV works manually & with motor power too... o MEMORY (Write & Read) works too - o Restored case parts with permanent marker and painted symbols... o Restored dials too... February 2006 NEW PROBLEM = fixed ----------------------------------------------------------------------------- o DIV-ERROR 22/7 =?= 3.0828571 2 decimals are wrong == 10sCarry in COUNTER defect ? o YES! Tooth broken / Replacement part installed... 22/7 = 3.1428571 Division OK now o 2 missing DECIMAL-MARKERS hand-made from brass and aluminum: above the keyboard for division (eg.) and below the keyboard for multiplication (eg.)

The replacement part was available...

Details of the hand-made decimal markers...

November 2006 ... ----------------------------------------------------------------------------- o DIV 6-8-4 Lever had no effect ... February 2008 PROBLEM SOLVED Observation of a friend's working Me-Eu-38MS I got the insight: Associated levers in the carriage were minimal bent: THANKS to Rainer Bruns! I am also grateful to Prof. Erhard Anthes for his help with valuable informations! Back to the MERCEDES-EUKLID 38 MS Main Page impressum: ***************************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 03/02/08