OMAS "Big Sliding"
Main Photo
Category:  Cranksets
Name:  OMAS "Big Sliding"
Brand:  OMAS
Primary Group:  'Big Sliding" Grouppo
Model:  800 / 900
Years:  1970's - 1980's
Country:  Italy
Weight:  603 grams (Actual),
both arms with 52/42 CRs and AL bolts
Added By: vxpro on 04/28/08
Updated By: Minga88 on 10/17/16
Additional Photos - click for full size
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Chainring CountDoubleBCD 144mm
BB StyleSquare TaperPedal Threads9/16" x 20 (English)
BB Length 112 mmFlutes Crank Arm; Spider
Lengths 170Arm/Spider MaterialAluminum Alloy
Front MarkingsO.M.A.S. - ITALYBack Markings170
Extractor Threading 22x1mm (Standard)  
General Information

Designated as "Art. 800" or "Art. 900" in the 78 catalog, from what I can tell the difference was only the the BB spindle material, Titanium or Steel.

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Additional Resources
Resources:Reference & ChartsCatalogsGear Calculator
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
"Big Sliding" Grouppo OMASView 4 Components
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