£25.80
Harken, Carbo block - 29mm single
Sheave diameter - 29mm
Length overall - 43mm
Max working load - 150 Kg
Break load - 454 Kg
Max line diameter - 8mm
Weight - 12g
This is one of an excellent range of ball bearing block designed to be both light & strong.
However its design relies upon being correctly rigged & care needs to be taken with:
1) That the attachment lines hold the cheeks of the block together & do not pull them apart.
2) That the attachment lines hold the block at the correct attitude & that the leads are straight.
3) That the blocks are kept clean & not subject to undue rough treatment.
In addition it should be noted that:
1) Splices are better than knots.
2) Blocks with bigger sheave diameters tend to be more efficient than blocks with smaller sheave diameters.