Which genoa track and cars are typically fitted on a Hallberg-Rassy 37?
I want to replace the genoa cars on my Hallberg-Rassy 37, which has control lines running back to the cockpit. Which make and size of track was normally fitted, and how can I identify compatible replacement cars?
Answer
The Hallberg-Rassy 37 was supplied with genoa tracks and lead blocks adjustable from the cockpit, but the standard technical description does not name the track manufacturer, profile or car model. Check the markings and cross-section of the fitted track before ordering replacements, as the boat model alone cannot establish compatibility.
Original genoa lead specification
The specification describes a genoa sheet lead on each side, with adjustment led back to the cockpit. It also names Lewmar 48 CST self-tailing genoa winches, but this does not establish that the tracks and cars are Lewmar.
That specification provides no reliable basis for assigning a particular brand or nominal size to every HR37 installation. Previous owners may also have replaced equipment, so identifying the hardware aboard matters more than matching a photograph of another HR37.
Start with the car and its end fittings. Check the block cheeks, car body and track end stops for an engraved name, moulded logo, casting number or label. Record each separately: a replacement block may carry a different manufacturer's name from the car beneath it.
Identify the track profile
Ease the genoa sheet completely and secure the sail before inspecting or removing a lead car. Clean a short section of track, then use vernier callipers rather than a tape measure to record:
- The maximum width across the track head.
- The overall height and the width of the narrower neck beneath the head.
- The cross-section: a projecting T-shaped head or a profile with bearing grooves.
- The fixing-hole spacing, measured centre to centre, and whether the bolt heads are exposed or concealed.
- Any stop-pin holes, including their spacing and approximate diameter.
Take one photograph looking directly at the track end and another showing the complete car, block and control-line attachments. Include a ruler in the photographs, but supply the calliper measurements separately.
A nominal width such as 32 mm is only a starting point. Cars advertised with similar widths can differ in their bearing surfaces, clearances and retention arrangements. They are not automatically interchangeable across brands or product generations.
Match the cockpit adjustment
A replacement must fit the rail and reproduce the working arrangement. Check whether the car slides on plain bearing inserts or runs on ball bearings. Establish whether a control-line purchase, a stop pin or a combination of fittings holds it in position.