Which genoa track and cars are typically fitted on a Rasmus 35?
I want to replace the genoa cars on my Hallberg-Rassy Rasmus 35, preferably keeping the existing tracks. Which make and size were normally fitted, and how do I check that replacement cars will fit?
Answer
The usual fitting is a T-section genoa track with sliding, pin-stop lead cars, though no single factory brand or size is confirmed for the Rasmus 35. Check the track profile and existing car before buying replacements: cars must match the section, and older boats may have had their hardware changed.
Identify the existing hardware
Look underneath the car, on the cheek plates around its sheave and at both ends of the track for a maker's name, casting number or stamped size. Clean off salt and dirt before ruling out markings; start with a nylon brush and fresh water.
Photograph the complete installation, the underside of the car if it can be removed, and the exposed track end. The end view shows the profile that the car must slide around.
Do not assume that dimensions quoted for another Hallberg-Rassy apply. A reported HR36 Mk1 installation had track measuring 32 mm across the top, 20 mm across the base and 12 mm overall height, with 100 mm fixing centres. These measurements help identify that boat's track; they are not a confirmed Rasmus 35 specification.
Measure the track section
Use vernier callipers, ideally reading to 0.1 mm. A tape measure will distinguish broad sizes but miss differences that determine whether a car slides freely or jams.
- Top width: measure across the widest part of the track head.
- Overall height: measure from the track base to its upper surface, excluding any separate mounting strip.
- Head thickness and neck width: these determine the clearance beneath the car's retaining lips.
- Locking holes: record their diameter and spacing, and whether they are centred or offset.
- Fixings: record bolt spacing, head shape and track length if you are considering replacement track.
Nominal widths such as 25 mm and 32 mm give you a starting point for a catalogue search, but do not prove compatibility. Tracks with the same top width can have different head thicknesses, corner radii and locking arrangements.
Check fit and working load
Check Barton, Lewmar and other deck-hardware suppliers once you have the dimensions, but do not rely on the brand name to establish compatibility. Ask the supplier to confirm the exact track section the proposed car accepts, preferably against a dimensioned drawing.