Rigging Projects RP1279 User manual

Internal Lock User Manual
May 2021-1 4/5/2021

Contents
1…..... Introduction
User information
Disclaimer
2........ Purpose
Internal Lock key design features
3…….. Assembly & Configurations
Internal Lock sizes and configurations
4…….. Installation
5…….. Installation (cont.)
6…….. Operations and Procedures
To Lock
7…….. Operations and Procedures
To Unlock
8…….. Maintenance & Checks
9......... Maintenance & Checks (cont.)
Strip Down
10…….. Maintenance & Checks (cont.)
Assembly
11…….. Maintenance & Checks (cont.)
Replacement of parts
12…….. Maintenance & Checks (cont.)
Exploded Assembly
13……..Troubleshooting
14……..Contacts

Introduction
This manual provides an overview of the Rigging Projects Internal Lock system and its maintenance. Please read this manual carefully before
installation, use or maintenance, to ensure that you have understood and are familiar with all relevant details.
This manual is an essential part of the product and should be kept for reference. Further copies can be made available upon request.
User information
Prior to using this product, all persons should be made aware about the possible hazards associated with its operation and use. Any service work,
repairs maintenance or equivalent work carried out on the product should be undertaken by technically qualified persons/crew.
Any persons/crew carrying out service work, repairs, maintenance or equivalent work must read this manual prior to starting any works.
Disclaimer
It is not permitted to modify/alter the product or its parts in any way other than replacing parts subject to wear and tear with Rigging Projects
specified and supplied parts as described in this manual.
Rigging Projects Ltd is not liable for any dangerous situation, accidents, damage and consequences thereof caused when deviating from the
instructions, guidelines and procedures described in this manual.
To retain warranty do not deviate from the instructions, guidelines and procedures described in this manual.
1

Purpose
Ranging from 2.5 to 30T, the Rigging Projects Internal Lock covers the entire range of yachts, from performance driven race yachts, right through to
the biggest superyachts.
The Rigging Projects Internal Lock is designed to enable the sail to be locked and unlocked without the need for any trip line or external device. The
system allows the user to lock or unlock by simply over hoisting the halyard through the lock.
Use of this product for other than normal sailing vessels applications is not covered by the limited warranty.
Internal Lock key design features:
•No need for internal trip line within the rig.
•A two-pawl system reduces the stress on the body when compared to a single pawl system.
•Coming off lock simply requires a small over hoist on the halyard.
•Cut out within the lock to be able to inspect the mechanism without removal.
AVAILABLE SIZES
The Internal Lock is available in a range of 2.5 to 30T. Internal Locks can be specified with or without an integrated sheave.
2

Configurations and Dimensions
Internal Lock sizes and configurations.
3
Internal Lock Part Ref Max Working
Load Dimensions (mm) Total Weight (Including Spigot)
(Kg) Mast Wall Thickness
Without Sheave
With Integrated
Sheave (T) a b
Without Sheave
With Integrated
Sheave (mm)
RP1279 RP1592 2.5 37 TBC 0.92 1.08 TBC
RP1219 RP1748 5 41 184 1.34 TBC 19
RP1254 RP1753 8 52 210 2.20 TBC 24
RP1255 RP1758 10 TBC TBC TBC TBC TBC
RP1256 RP1759 12 TBC TBC TBC TBC TBC
RP1257 RP1760 15 TBC TBC TBC TBC TBC
RP1258 RP1761 20 TBC TBC TBC TBC TBC
RP1259 RP1762 25 TBC TBC TBC TBC TBC
RP1260 RP1763 30 TBC TBC TBC TBC TBC
a
b

Lock Strop Info
Internal Lock Strop Info
4
Internal Lock With Sheave
Lock Size
Minimum Strop Length
(mm)
Construction
BL (kg)
Straight Loop
S.F
2.5T 250 4 x 3mm 9408 3.76
5T 300 3 x 5mm 17220 3.44
8T 400 4 x 6mm 29680 3.71
10T TBC TBC TBC TBC
12T TBC TBC TBC TBC
15T TBC TBC TBC TBC
20T TBC TBC TBC TBC
25T TBC TBC TBC TBC
30T TBC TBC TBC TBC
Internal Lock Without Sheave
Lock Size
Minimum Strop Length
(mm)
Construction
BL (kg)
Straight Loop
S.F
2.5T 250 4 x 3mm 9408 3.76
5T 300 3 x 5mm 17220 3.44
8T 400 4 x 6mm 29680 3.71
10T TBC TBC TBC TBC
12T TBC TBC TBC TBC
15T TBC TBC TBC TBC
20T TBC TBC TBC TBC
25T TBC TBC TBC TBC
30T TBC TBC TBC TBC

Installation
Internal Lock Installation into spar
•Installation of a Rigging Projects Internal Lock should only be carried out by a suitably qualified and experienced personnel. If in any doubt,
contact Rigging Projects.
•Installation should only be carried out using the router jigs supplied by Rigging Projects.
•Tube engineering should be checked prior to locks being fitted to any spar –If in any doubt, contact Rigging Projects first.
1. Working with the spar on the ground, position the router jig in the correct position and secure using the two lock mounting bolts.
2. Once happy with the position of the lock, cut out the slot within the jig plate and tidy up with a drum sander to achieve a neat finish.
3. Angle the top of the lock into the slot in the spar and push through until the lower edge passes through the slot.
4. Tilt the lock back to the upright position and pull towards the front of the rig until it seats in the slot. Fit the two mounting bolts and tighten to
pull the lock into place. These mounting bolts should be fitted with Loctite.
5

Operations & Procedures
Procedure for Internal Lock
To Lock
1. After connecting the sail to the lock strop, begin hoisting the sail on the halyard.
2. As the bullet reaches towards the entrance of the lock body, reduce the speed at which the line is winched.
3. Keep raising the line until the bullet passes through the snap ring in the lock. For going on lock, there is no limit to the amount the line can be
over hoisted.
4. Once the line has been over hoisted sufficiently, ease down slowly on the halyard until the locking pawls engage. Before removing the hoist line
from the winch, increase the tack load to ensure that the lock is engaged.
5. Line can now be completely removed from the winch.
6

Operations & Procedures (cont.)
Procedure for Internal Lock (cont.)
To Unlock
1. Before removing any load on the tack, load the hoist line onto a winch.
2. Once the tack is released, slowly wind the hoist line to take up the tension. Only a small over hoist is required to open the pawls.
3. After a small over hoist, the hoist line can be slowly eased down to ensure the lock has been released. If unlocked, drop the sail as normal.
4. If the over hoist on the hoist line is too much, the mechanism will reactivate and lock. A smaller over hoist is required to open the pawls without
reactivation.
7

Maintenance & Checks
The following maintenance and checks should be carried out on the lock as per the below sheet.
Rigging Projects equipment is designed for minimal maintenance, but some maintenance is required for optimum and safest possible operation and
to comply with the Rigging Projects limited warranty. In general, the most important aspect of maintenance is to keep your equipment clean by
frequently flushing with fresh water. In corrosive atmospheres, stainless parts may show discoloration around holes and screws. This is not serious
and may be removed with a fine abrasive.
IMPORTANT! Exposure to some teak cleaners and other caustic solutions can result in discoloration of part and is not covered under the Rigging
Projects warranty.
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Description
Period Mileage
Visual inspection of body external to the spar
2 Months 2500 Miles
Check secureness of lock mounting screws
Through the inspection hole, move pawls by hand to check for any debris or stickiness
Check the plastic wedges on the snap ring holder for any serious wear
On versions with integrated sheave, check the sheave is not damaged and spins freely
Check the surface of the bullet for any wear or damage
The lock should be removed from the spar and all components inspected, cleaned, re
-greased and
reassembled using Loctite where required on screws. If in doubt, please contact RP for further
information or clarification.
Annually 20000 Miles

Maintenance & Checks (cont.)
Strip Down
1. Remove all screws holding one half of the body together (1) This can also be done for the other half body at this stage.
2. For locks with built in sheave, remove sheave pin retaining screw (2).
3. Remove top half of the body (3).
4. Remove sheave and sheave pin (4) (On locks with internal sheave).
5. Remove both pawls from the body along with the pawl pins (5), making note of spring and dowel orientation.
6. The bottom ferrule and snap ring holder can also be removed together (6). On models without a sheave, the top ferrule can also be removed.
9

Maintenance & Checks (cont.)
Assembly
1. Starting with one half of the body, fit the snap ring holder and end ferrule (6).
2. Fit the pawls and pawl pins (5) ensuring that the spring orientation is correct, and the spring legs are the correct side of the dowels in the body.
3. On versions with a sheave, fit the sheave and sheave pin (4) into the body. For versions without a sheave, fit the top ferrule.
4. Fit the other half of the body to the lock (3), ensuring that the tapped mounting plates are located in the lock.
5. Fit the sheave retaining screw on models with a sheave (2).
6. Fit all body retaining bolts and secure with Loctite (1).
10

Maintenance & Checks (cont.)
Replacement of the snap ring
1. Strip down the lock as described in the previous section.
2. Place the snap ring holder (7) in a suitable vice.
3. Remove ferrule (8) from snap ring holder
4. Remove the plastic ramps (9) and then the cover plate by removing the two screws.
5. Fit the new snap ring into the holder.
6. Ensure that the new snap ring is retained in the groove but is free to move around within the housing.
Replacement of the sliding bush
1. Strip down the lock as described in the previous section.
2. Unscrew locking wedges (9) from snap ring holder.
3. Withdraw bush from snap ring holder (10).
4. Refit locking wedges (11) and apply Loctite to screws.
Replacement of the rolling wedges
1. Strip down the lock as described in the previous section.
2. Unscrew rolling wedges (11) from snap ring holder.
3. Refit new wedges applying Loctite to retaining screws
11

Maintenance & Checks (cont.)
Exploded Assembly –Internal Lock
12
8
7
9
10
11
5
1
2
3
4
6
1

Troubleshooting
13
Problem
Probable Cause
Solution
The lock mechanism
will not unlock to allow
the sail to be dropped
-
The halyard may not have been raised enough to
allow the pawls to open.
-
The pawl springs may have been damaged
resulting in the pawls not flipping open to allow the
spigot to pass through
.
-
Try reducing the overhoist as too much overhoist
will reset the mechanism.
-
Try increasing the amount of halyard taken up to try
and unlock.
-Look through inspection hole and whilst the halyard is
raised, check that the pawls spring open. If not, the
pawl springs may need to be changed or there may be
debris in the pawl mechanism, in which case a strip
down will be required.
The lock mechanism
will not activate and
therefore won’t lock
-
The snap ring or bullet may have been damaged.
-The force required to close the pawls may be more
than normal.
-The rolling wedges on the snap ring holder may be
worn not closing the pawls
-With the bullet out of the lock, visually check the snap
ring is present and not damaged. Check the bullet for
damage. Try to operate the pawls through the
inspection hole
-
If the snap ring is damaged, a strip down will be
required and ring replaced
-
contact Rigging Projects for
parts
-
Replace the rolling wedges if after inspection, they
appear to be worn.

Unit 5, Mitchell Point
Ensign Way
Hamble
S031 4RF
UK
[e-mail]
[phone]
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