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[UD]

Hydraulic below-deck furling system

The Reckmann UD is a below deck mounted hydraulic furling gear. Like all Reckmann hydraulic furlers, the UD has an emergency manual drive to be operated safely on deck level with a standard winch handle.
The UD unit is is available with different means of attachment. We offer the following (partially mandatory) features:

compact system size
integrated ram to tension the stay in relation to the foils
po check valve to keep the adjuster hydraulic lines pressure free if not in use
ultrasonic sensor to know where the adjuster piston is and how the stay is adjusted
special ball bearing sliding mechanism to avoid slip stick effect
reliable back up system, easy and safe to operate from deck level
good performance to weight ratio
the system is available for all kinds of headstays
stay disconnection system above deck level
suitable for carbon and aluminium foils

UD-5.5SC

UD-2C

TKS-5

UD-6.5SC

UD-3sc

UD-2SC

UD-3SC with Emergency Manual Backup

[Features]

Emergency Manual Backup

The unique manual drive ensures the greatest possible level of security. By simply inserting a standard winch handle, the electric drive will disconnect and switch to manual operation. Due to this special gear mechanism that prevents sail forces from transferring to the winch handle, the reefing system can be safely and easily operated, even when in manual mode.

Halyard Swivel FS

The Reckmann high-performance halyard swivels turn with extremely low amounts of friction, thereby guaranteeing a secure operation without twisting the halyard. The compact design and size graduation ensure a low weight aloft.

Further details

Tack Slider

The tack slider or floating tack swivel allows the sail luff to be tensioned independently of the stay. This is a necessary addition, specifically with sails that have a halyard lock.

Carbon Foils

Our carbon profiles offer high resistance and low weight at the same time. A weight reduction of 50-60 % in comparison with conventional aluminium profiles means that there is a significant improvement in performance.

[Facts]

To install on deck

		UD-2SC	UD-2SCRT	UD-3SC	UD-3SCRT	UD-4SC	UD-4SCRT	UD-5SC	UD-5SCRT	UD-5.5SCRT	UD-6.5SCRT
A	[mm]	160	280	220	382	250	463	340	606	710	952
B	[mm]	150	150	196	196	242	242	310	310	316	428
C	[mm]	174	174	252	252	338	338	420	420	396	568
i	[mm]	-	80	-	80	-	80	-	80	80	80
stroke stay length adjustment	[mm]	60	80	60	100	80	150	120	200	250	400
weight	[kg]	12,5	15,7	27	30,7	53	60,8	110	121	145	312
volume flow	[l/min]	10	10	17	17	30	30	40	40	40	65
Pulling force rt-Adjuster	[t]	-	7@350bar	-	12t@250bar	-	20@300bar	-	35@270bar	45@325bar	63,5@350bar
max. stay load	[t]	8	8	15	12	20	20	35	35	45	58
max. tack load	[t]	1,5	1,5	2,5	2,5	3,5	3,5	5	5	6	8
max. rod size	[-]	-40	-40	-76	-60	-91	-91	-170	-170	-220	-320
max. diameter wire	[mm]	12	12	16	16	22	22	32	32	-	-
max. headstay length	[m]	23	23	36	36	42	42	50	50	58	70
matching aluminium foils	[-]	R20, R30	R20, R30	R40, R5	R40, R5	R5, R6	R5, R6	R6, R7	R6, R7	R7, R8	-
matching carbon foils	[-]	S2, S2.5	S2, S2.5	S3, S4, S4.5	S3, S4, S4.5	S5, S5.5	S5, S5.5	S6, S6.5, S7	S6, S6.5, S7	S7, S7.5, S8	S8.5, S9

To install on the chain plate

		UD-2C	UD-3C	UD-4CRT	UD-6.5CRT
A	[mm]	205	247	645	1080
B	[mm]	125	147	172	372
C	[mm]	205	250	280	465
i	[mm]	-	-	-	-
stroke stay length adjustment	[mm]	60	60	150	300
weight	[kg]	10	17,5	47	225
volume flow	[l/min]	10	17	30	65
Pulling force rt-Adjuster	[t]	-	-	23t@350bar	63,5t@350bar
max. stay load	[t]	9	13,5	21	58
max. tack load	[t]	1,5	2,5	3,5	8
max. rod size	[-]	-40	-60	-91	-320
max. diameter wire	[mm]	12	16	22	-
max. headstay length	[m]	23	36	42	70
matching aluminium foils	[-]	R20, R30	R40, R5	R5, R6	-
matching carbon foils	[-]	S2, S2.5	S3, S4, S4.5	S5, S5.5	S8.5, S9

To install on the chain plate, with cover flange

		UD-2CDF	UD-3CDF
A	[mm]	200	220
B	[mm]	125	147
C	[mm]	205	250
i	[mm]	-	-
stroke stay length adjustment	[mm]	60	80
weight	[kg]	13,2	24
volume flow	[l/min]	10	17
Pulling force rt-Adjuster	[t]	-	-
max. stay load	[t]	9	13,5
max. tack load	[t]	1,5	2,5
max. rod size	[-]	-40	-60
max. diameter wire	[mm]	12	16
max. headstay length	[m]	23	36
matching aluminium foils	[-]	R20, R30	R40, R5
matching carbon foils	[-]	S2, S2.5	S3, S4, S4.5

[Furling Sections]

Aluminium profiles

	Nut	G	O	A	B
		[mm]	[mm]	[mm]	[mm]
R10	double	6,4	2,3	31,4	24,1
R20	double	6,4	2,3	35,8	28,8
R30	double	7,5	3	45,5	36,1
R40	double	7,5	3	49,1	38,7
R50	double	8	3,5	54	42
R5	double	7,5	3,5	60	47
R6	double	7,5	3,5	72	60
R7	double	7,5	3,3	85	72
R8	single	8	3,2	107	93

Carbon profiles

	G	O	A	B
	[mm]	[mm]	[mm]	[mm]
S2	7,2	2,8	38,5	29
S2.5	7,2	2,8	41,3	32,2
S3	7,2	2,8	49	38,5
S4	7,2	2,8	55,4	44,4
S4.5	7,2	2,8	60	50,8
S5	7,2	2,8	67,1	56,6
S5.5	7,2	2,8	72,8	62,7
S6	7,2	2,8	82	71,5
S6.5	7,2	2,8	86,9	76,2
S7 large	10	3,8	97,3	81,3
S7 small	7,2	2,8	91,3	81,3
S7.5	10	3,8	107,25	90,2
S8	10	3,8	112	97,3
S8.5	10	3,8	122	107,5
S9	13,02	5,01	148,2	132
S9.5	13,02	5,01	170,6	154

[Downloads]

UD Flyer

Download: UD_Flyer_EN.pdf

Dimension Sheet

Download: Massblatt-UD-xCDF-EN.pdf