This jammer block is for situations where a fixed foot block can’t help: peeling spinnakers, or changing a sheet winch.
Details:
- Controlled spinnaker handling
- Attached with webbing strop, positioned on a toe rail or padeye
- No drilling and no clutter on deck
- Plain bearing sheave provides smooth running at low loads
- Excellent durability at high loads
- Strop allows fullest rotation for spinnaker sheet use
- CAM has three distinct operating modes
Especifications:
Sheave Diameter / TypeBRS/50 – 50mm (2″) composite
BRS/63 – 63mm (2 1/2″) AlloySWL (Safe Working Load) SheaveBRS/50 – 800kg (1760lbs)
BRS/63 – 1200kg (2640lbs)Safe Cam LoadBRS/50 – 160kg (352lbs)
BRS/63 – 240kg (528lbs)Line DiameterBRS/50 – 6-10mm (1/4-3/8″)
BRS/63 – 8-12mm (5/16-1/2)
FAQs
No drilling is required; the product is positioned using the webbing strop to avoid deck clutter.
SWL Sheave for BRS/50 is 800kg (1760lbs).
Safe Cam Load for BRS/50 is 160kg (352lbs).
The sheave uses a plain bearing to provide smooth running at low loads.
BRS/63 has a 63mm alloy sheave, SWL sheave 1200kg (2640lbs), safe cam load 240kg (528lbs), line dia 8–12mm (5/16–1/2″).
BRS/50 uses a 50mm (2″) composite sheave.
BRS/50 accepts line diameters 6–10mm (1/4–3/8″).
The block is attached with a webbing strop and positioned on a toe rail or padeye.
Contact the SailRACE team — as certified marine experts we’re happy to help with product selection, installation and after-sales servicing, before and after your purchase.








