Adjusting cars replace separate blocks, and connecting ring or shackle Tandem sheaves eliminate severe backstay wire flexing. For maximum car release, use a 1.5 to 1 ratio between backstay base width and car height (click on image for full diagram).
The 38 Series car with Delrin sheaves are for boats up to 30ft. The 39 Series car with aluminum sheaves for boats up to 40ft. Match with Harken 40mm or 57mm Carbo Blocks.
|Part #||Max. Wire||Downhaul|
|JH38203||3/16"||Sheave & Becket|
|JH39203||1/4"||Sheave & Becket|
|JH38213||38 series replacement sheaves (4)|
|JH39213||39 series replacement sheave (1)|