Ronstan RF72900T Two-speed Mainsheet System Top Blocks Only
Deliver to:
Auckland 0626,
NZ
Estimated:
$5.99
2-hour Click & Collect:
(order before 3pm, in-stock products only)
Our Auckland Shop
Free
Buy now, pay later & Finance Options
Find Local Store

Report incorrect product information
The item you're looking at is currently unavailable or has limited stock, how about this one instead?
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).
Features:
Specifications:
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
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 | 575 g |
Some of our product deals are strictly limited - once they're gone, they're gone! Secure yourself this amazing deal while stocks last...by clicking the Add to Order button above.