Head fitting + backstay crane - 10 or 12 mm Ø

Quick Overview

Ball raced head fitting + backstay crane. Suitable for Naviga 1M, US1M, Marblehead, Ten Rater, 6 Metre and similar sized boats.


Choose from the following:


For 10 mm Ø carbon tube with an 8 mm ID. 


For 12 mm Ø carbon tube with an 10 mm ID.


Can also be used on 8 mm Ø carbon tube with a 6 mm ID. 75 mm long backstay crane.


Allen key, ref AK-M2-G, is supplied with this product.

Product code. 025

Availability: In stock

£20.50

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£20.50

Head fitting + backstay crane - 10 or 12 mm Ø

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Ball raced head fitting + backstay crane. Suitable for Naviga 1M, US1M, Marblehead, Ten Rater, 6 Metre and similar sized boats.

Can also be used on 8 mm Ø carbon tube with a 6 mm ID. 75 mm long backstay crane.

Ball raced head fitting + backstay crane. For 10 mm diameter carbon tube with an 8 mm ID. 75 mm long backstay crane. Suitable for Marblehead, Ten Rater, 6 Metre and similar sized boats.

A   We use 20 mm wide Mylar tape to reinforce the top of the mast tube. You can also use deck patch material or carbon tow and epoxy resin.

B   On Marblehead class A1, B1 & C1 rigs you should add the upper limit mark to the rotating arm.

C   When used with eyelet luff sails it is useful if the upper edge of the arm has a series of notches. Moving the head of the sail aft allows the top of the sail to be flattened (useful when over pressed) and twist off more.

D   Move the backstay as far forward as possible on the carbon crane  without conflicting with the mainsail leech in order to reduce mast bend and increase forestay tension. When it is in the correct place, use a spot of cyanoacrylate glue to bond it in place.

To attach a SAILSetc wind indicator drill a 1.6 mm diameter hole in the mast where shown and use an O ring, ref. 82-010, to secure the wind indicator. Note the bend in the wind indicator wire. The lanyard and clip hook are a safety measure to avoid losing the wind indicator.

Allen key, ref AK-M2-G, is supplied with this product.

Replacement bearings - choose BP-061-010 from the SPARES section of this website.

Maintenance of the bearings used in this product is described here.

This item combines the head fitting and backstay crane into a single unit suitable for use with almost all M and 10R rigs where 10 or 12 mm Ø carbon tube is used for the upper mast. In this robust unit the backstay crane and head fitting are captive preventing loss or misalignment. Of course it may also be used in any diameter mast tube if it is first lined with a short length of 8 or 10 mm ID tube. 

025, 025-100, 25-120

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