hrvatski

Materijali za izradu veslačkog čamca

Rowing racing boat is limited by FISA's rules. For the material selection, the most important rule is rule number 34 which limits the boat minimum weight depending on the rowing discipline. Materials used for rowing racing boats, except for shoes, ball and number holder, have to be stiff, strong and must have small density. The hull is mostly made of sandwich composite including aramid honeycomb in the middle, and aramid fibres on both sides of the sandwich. Matrix used for this composite is epoxy resin. Where needed, the hull is strengthened with carbon fibres and the ribs are made from woodreinforced with carbon fibres. Wing-riggers and rigger are also made of carbon fibres in epoxy matrix. There are many types of riggers and materials that are mostly used for making riggers are aluminium and carbon fibres in epoxy matrix. Plastic oarlock with stainless steel or aluminium pivot is placed on the end of the rigger. Oarlock holds the oar and transfersthe force from the oar to the hull trough the rigger. The moving saddle, in most cases made of cedar or carbon fibres in epoxy matrix is standing on an aluminium stand, on which plastic wheels with ball bearings are fixed with the bolt.Wheels are rolling on aluminium slides. Besides the saddle, the contact point between the rower and his boat are the shoes. In most cases they are made of synthetic leather and cloth and are fixed to an aluminium sheet, which is fixed to the shoe carriers. Shoe carriersare made of aluminium profile or plywood plate reinforced with carbon fibres. Shoe carriers position can be adjusted by moving on the plastic rack which is fixed to the hull by wooden or carbon fibrereinforced stands. A rubber ball and a plastic number holder are fixed on the bow of the boat. Direction is held by fin and in some cases by rudder. The fin and the rudder are in most cases made from aluminium or carbon fibre composites with epoxy matrix. Boat’s weight limit allows the development of the boat to accept also the ecological character and the use of recyclable materials in the future.

veslanje; natjecateljski veslački čamac; ugljična vlakna; aramid; saće; sendvič-konstrukcija; aluminij; epoksidna smola; recikliranje; kompoziti; trup čamca; izbočnici; materijali; povijest

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