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CL247 Compact Twin Sheave Cleat
Use the CL247 for a 6:1 ratio downhaul. Fits any mast extension.
| Technical Details | Metric | Imperial | |
|---|---|---|---|
| Rope Diameter |  |
3 - 5mm | 1/8 - 3/16" |
| Material |  |
Aluminium & Nylon | Aluminium & Nylon |
| Hole Centres |  |
31mm | 1 1/4" |
| Length |  |
53mm | 2 1/16" |
| Width |  |
40mm | 1 9/16" |
| Height |  |
24mm | 1 |
| Bolt Size |  |
M5 | #10-24. 3/16" |
| Screw Size |  |
4.8 | No 10 |
| Weight |  |
40gms | 1.4oz |
Availability:
In stock
SKU
Clamcleat-CL247
CL247 is manufactured from high pressure die-cast aluminium to give a light weight yet durable cleat. The rollers are manufactured from a composite plastic designed to withstand coral sand. It can be fitted onto any mast extension, or tube,using rivets or screws.
To increase your pulling power when tensioning, use a CL261 Power Grip in one hand.
For 2 handed pulling power, use a CL262 Power Grip 2.
You may also want to consider the CL250, because, when tensioned, it allows the sail to sit lower down the mast than the CL247.
Another combination for tensioning a 6:1 advantage is the CL708 rivet-on fitting, plus CL248 Hook/cleat.
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Q: Does Clamcleat® make cleats for windsurfers?
Ans: Clamcleat® make a range of cleats for windsurfers including CL247 twin sheave cleat, CL248 cleat with hook and 3 sheaves, CL250 gap closer, CL253 trapeze cleat, CL708 Rivet-on fitting for 8:1 cleat and a range of boom cleat and clamp for booms from 20-43mm.
Q: What diameter of boom will the boom CL244 Boom cleat fit?
Ans: CL243/S5 = 20-21mm tube
CL244+CL105 = 30-32mm tube
CL244+CL111 = 32-35mm tube
CL244+CL115 = 35-37mm tube
CL244+CL134 = 42-43mm rube
CL265AN with stainless steel clamp = 25-31mm
Q: What can I use to tension my outhaul or downhaul?
Ans: Clamcleat® make a range of power grip cleats for hand tensioning the outhaul or downhaul. The power cleats include CL249 Tug cleat, CL261 power grip 1 (single hand) and the CL262 power grip 2 (two handed cleat) all for 3-6mm rope.
Q: Does Clamcleat® make a range of insert cleats which are integrated into windsurfer booms and masts?
Ans: Clamcleat® make a range of aluminum insert cleats which include 3 sizes which are used for windsurfers CL712, CL715 and CL716.
Q: What can I use to tension my outhaul or downhaul?
Ans: Clamcleat® make a range of power grip cleats for hand tensioning the outhaul or downhaul. The power cleats include CL249 Tug cleat, CL261 power grip 1 (single hand) and the CL262 power grip 2 (two handed cleat) all for 3-6mm rope.
Q: Does Clamcleat® make a range of insert cleats which are integrated into windsurfer booms and masts?
Ans: Clamcleat® make a range of aluminum insert cleats which include 3 sizes which are used for windsurfers CL712, CL715 and CL716.
Q: Why does Clamcleat® not publish safe working loads (SWL) or break loads for its cleats?
Ans: The quality, type and style of the rope or cord plays a major role in the performance of the cleat. Normally the better the quality of the rope the greater holding power, also some cleats are designed to slip once they exceed the desired holding load as a safety feature including securing fabrics such as sunshades or covers.
Q: Do you get a better performance with an Aluminum cleat?
Ans: Aluminum cleats do not improve the performance of the cleat, but they can achieve higher holding loads and they also might improve the lifespan of the cleat especially if the rope will be in contact with the teeth whilst the rope is being pulled through during adjustment.
Q: What different coating are there for the Aluminum cleats?
Ans: The standard coating for the cleat is a Stoving Aluminum silver enamel coating. For extra protection from corrosion and a high-tech appearance the cleats are also available in a dark grey Hard anodized finish. The part no in suffixed with “AN” to identify the hard anodized finish.
Q: What is the best way to fix an aluminum cleat into a carbon fiber spar?
Ans: You need to create a barrier between the aluminum cleat and the carbon fiber surface to stop electrolytic de-composition. The barrier can be created by cutting a thin shim of plastic to the shape of the cleat and drill the fixing holes (the retail card the cleat is sold on is ideal to use as the shim), also use aa inhibitor or anti corrosive jointing compound such as Duralac on the fixing.
Q: Do you need to put a barrier between the Aluminum cleat and the stainless-steel fixing?
Ans: You need to add a inhibitor or barrier compound between the fixings, the Aluminum cleat and the mast or boom. For example, Daralac anti corrosive jointing compound.
Q: How long should an Aluminum cleat last?
Ans: This really depends on the usage, the quality and age of the rope used etc. so is very difficult to gauge. The ultraviolet rays will discolor the cleats over time and in very sunny climates may affect the life of the cleat. In extreme climates the life expectancy should be 10 -15 years depending on usage and in more moderate climate 20 + years.
Q: Can I fit my cleats using pop rivets?
Ans: Using pop rivets to fit your cleat is a tidy quick way of securing the cleat. Ensure the pop rivet is at 90 degrees to the cleat when fixing and with certain smaller cleats the head of the pop rivet gun will not sit onto the pop rivet when in place so you will require to add a spacer between the gun and the rivet.
Q: What type of rope or cord will give the best performance on my cleats?
Ans: In our experience a braided good quality rope gives you the best holding performance.
Q: Is there any maintenance required to a cleat to keep it performing well?
Ans: We would recommend flushing the with fresh water as often are you can.
