Ronstan RF72900 Two-speed Mainsheet System Ratchet – 2 Speed 8:1 4:1

Two-speed mainsheet systems allow both coarse and fine tuning in a
single purchase system. The system allows fine tuning of the
mainsheet when sailing upwind by using one of the sheet tails and
keeping the other cleated. Using both the sheets at once allows the
trimmer to blow off the main quickly when rounding the top mark and
trim on quickly when hardening up after rounding the bottom mark.
When fitting to traveller cars, ensure adequate support for the
bottom block and use stand-up spring kit RF324-1 or RF324-2. (Refer
to traveller section for more information).

Applications

• Mainsheets on sportsboats and keel boats to 12m (40ft)
• Mainsheets on sportsboats and keelboats to 12m (40′)
• Max. mainsail area, END boom sheeting = 42sq m (452 sq ft)
• Max. mainsail area, MID boom sheeting = 27sq m (290 sq ft)

Materials

• Carbon Black Acetal ball bearings
• U.V. stabilised Acetal sheaves, alloy ratchet sheaves
• Alloy cheeks
• Torlon ratchet pawl
• Adjustable cleat arms

Spare Parts

Product No.	Description
RF324	Springs,

Features:

• Coarse and and fine tuning purchase system
• Unrivalled 18:1 holding power
• Dual sided On-Off switch
• Low friction ball bearing system
• Lightweight
• Cheek cut-outs for easy bearing maintenance

Specifications:

Sheave diameter	75 + 50 mm
Max. Rope diameter	10 mm
Max. Cable diameter	– mm
Pin diameter	– mm
M.W.L.	1100 kg
B. L.	2300 kg
Weight	1535 g