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The Serrurier truss was designed to allow for lighter tube assemblies to be utilised with very large professional telescopes where the weight of materials required to make a fully rigid truss or tube would have been too onerous.
With piddling little amateur scopes, the physics of flexure are much less demanding - even with my 20" Dob, there is no discernible deflection in the position of the OTA at any position. I think the CF trusses on the RC will be more than adequate.
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