Gori folding propellers – Propeller
Photo: Prillen, CC BY-SA 3.0, via Wikimedia Commons (cropped)

Gori · Propeller

Gori folding propellers

Gori Propeller in Haderslev, Denmark, part of the BSI group, has made geared folding propellers for sailing yachts since 1975. The range covers a 2-blade prop for shaft and saildrive, the 3-blade with Overdrive (since 1994) and its Single Pitch sister without Overdrive, and a 4-blade for large engines. On the 3- and 4-blade the blades swing through 180° between ahead and astern, so the same leading edge works both ways, and in Overdrive they drive ahead at a coarser pitch, so the engine turns slower at the same speed. Spares depend on the diameter group and on shaft or saildrive; in the USA, Gori’s distributor AB Marine also publishes its own installation sheets.

Manuals & documents

The links go straight to Gori. We host no manuals or drawings — the manufacturer’s copy is the current one.

Wear parts & part numbers

PartOEM numberAlso fitsNote
Ring anode15670000003,4,5Anode Factory R8010231Sam Allen 21219-SAM2Collar anode set for the 2-blade saildrive prop (13–18″): 2 half rings 1510530000, 4 countersunk screws M6x12 1179910612, threadlocker, 4 mm Allen key. Dealers shorten it to 15670000. The 2-blade shaft prop has no anode of its own: fit a shaft anode as close to it as you can.
Ring anode15520000006,7,4,8—Collar anode set for the 3-blade shaft prop, 15 and 16.5″ (Overdrive and Single Pitch): 2 half rings, 4 screws, threadlocker, 4 mm Allen key. Dealers shorten it to 15520000. Not the saildrive set.
Ring anode155275000010,4Anode Factory R8010259Collar anode set for the 3-blade Overdrive saildrive prop, 15 and 16.5″: 2 ring anodes 1510570000, 4 countersunk screws M6x16 1179910616, threadlocker, 4 mm Allen key. Dealers shorten it to 15527500.
Ring anode155300000012,13,4Anode Factory R80102611Collar anode set for the 3-blade shaft prop, 18 and 20″ (Overdrive and Single Pitch): 2 ring anodes 1510550000, 4 countersunk screws M6x22 1179910622, threadlocker, 4 mm Allen key. Dealers shorten it to 15530000 or 1553000.
Ring anode155395000015,16,4Anode Factory R80102414Collar anode set for the 3-blade saildrive prop, 18 and 20″ (Overdrive and Single Pitch): 2 ring anodes 1510580000, 4 countersunk screws 1179910622, threadlocker, 4 mm Allen key. Not the same anode as the 18–20″ shaft set 1553000000. Dealers shorten it to 15539500.
Ring anode155400000012,17,18,4—Collar anode set for the 3-blade shaft prop, 22, 24 and 26″ (Overdrive and Single Pitch), and the 4-blade 23, 25 and 27″: 2 ring anodes 1510560000, 4 countersunk screws M6x25 1179910625, threadlocker, 4 mm Allen key. Dealers shorten it to 15540000.
Ring anode155500000012,18,4—Collar anode set for the 3-blade Overdrive shaft prop, 28 and 30″, and the 4-blade 29 and 32″: 2 ring anodes 1549000000, 4 countersunk screws M6x25 1179910625, threadlocker, 4 mm Allen key. Dealers shorten it to 15550000.
Propeller anode140721000010,6,7,20Anode Factory R80102219Aft anode set for the 3-blade, 15 and 16.5″ (shaft and saildrive, Overdrive and Single Pitch): anode 1504700000, locking pin 1447000000, threadlocker, 6 mm Allen key. On this size the locking pin also secures the blade pins, so use Gori’s. Dealers list it as 1407210 or 14072100.
Propeller anode140731000012,15,13,16,20Anode Factory R801022/121Aft anode set for the 3-blade, 18 and 20″ (shaft and saildrive, Overdrive and Single Pitch): anode 1407300000, socket screw 1407000625, threadlocker, 5 mm Allen key. Dealers list it as 1407310 or 14073100.
Propeller anode140741000012,17,20Anode Factory R80102122Aft anode set for the 3-blade shaft prop, 22, 24 and 26″ (Overdrive and Single Pitch): anode 1407400000, socket screw 1509120630, threadlocker, 5 mm Allen key. Dealers list it as 1407410 or 14074100.
Propeller anode140745110012Anode Factory R80102823Aft anode set for the 3-blade Overdrive shaft prop, 28 and 30″: anode 1407450100, socket screw 1509120630, threadlocker, 5 mm Allen key. Anode Factory gives the Gori number as 14074511.
Flexible blade stops1407710000 · 14077100SP10,6,7,24—Flexible blade stops, set of 3, for the 3-blade 15 and 16.5″: 1407710000 for the Overdrive, shaft and saildrive (3 stops 1439000000; dealers: 1407710), 14077100SP for the Single Pitch shaft prop.
Flexible blade stops1407510000 · 14075100SP12,15,13,16,24—Flexible blade stops, set of 3, for the 3-blade 18 and 20″, shaft and saildrive: 1407510000 for the Overdrive (3 stops 1407500000; dealers: 1407510), 14075100SP with blue stops 14075000SP for the Single Pitch.
Flexible blade stops1407610000 · 14076100SP12,17,24—Flexible blade stops, set of 3, for the 3-blade shaft prop 22, 24 and 26″: 1407610000 for the Overdrive (3 stops 1407600000; dealers: 1407610), 14076100SP for the Single Pitch (3 stops 14076000SP-2 with 3 stop pins 14076000SP2).
Flexible blade stops140971000012,24—Flexible blade stops, set of 3, for the 3-blade Overdrive shaft prop 28 and 30″: 3 stops 1409700000. Dealers: 1409710.
Flexible blade stops144165422018—Flexible blade stops, set of 4, for the 4-blade 23, 25 and 27″: 4 stops 1407604165.
Flexible blade stops14410B4133 · 14410B414018—Flexible blade stops, set of 4, for the 4-blade 29 and 32″. The mounting hole decides: 14410B4133 for a 13.3 mm hole (stops 14076B4133), 14410B4140 for a 14 mm hole (14076B4140). Measure before you order.
Service kit1472100000 · 14721000SP10,6,7—Blade stops plus aft anode, 3-blade 15 and 16.5″: 1472100000 for the Overdrive, shaft and saildrive (3 stops 1439000000, anode 1504700000, locking pin 1447000000, threadlocker, 6 mm Allen key); 14721000SP for the Single Pitch shaft prop.
Service kit1473510000 · 14735100SP12,15,13,16—Blade stops plus aft anode, 3-blade 18 and 20″, shaft and saildrive: 1473510000 for the Overdrive (3 stops 1407500000, anode 1407300000, screw 1407000625, threadlocker, 5 mm Allen key); 14735100SP for the Single Pitch, with blue stops.
Service kit1474610000 · 14746100SP12,17—Blade stops plus aft anode, 3-blade shaft prop 22–26″: 1474610000 for the Overdrive (3 stops 1407600000, anode 1407400000, screw 1509120630, threadlocker, 5 mm Allen key); 14746100SP for the Single Pitch.
Service kit141261000012—Blade stops plus aft anode for the 3-blade Overdrive shaft prop 28 and 30″: 3 stops 1409700000, anode 1407450100, screw 1509120630, threadlocker, 5 mm Allen key.
Propeller nut144100001210,15,16,25—M16x2 nut set for the 3-blade saildrive prop, 15–20″ (Overdrive and Single Pitch): nut 1441000018 with 2 set screws, countersunk locking screw M8x20 1179910820, washer 4772120001, threadlocker, 5 mm Allen key. According to AB Marine, not a Gori document, M16x2 is the thread of the Yanmar SD20/25 and SD30/31, Volvo Penta, Lombardini, Beta, Nanni and Technodrive SP60 saildrives. Check your drive’s thread before you order.
Propeller nut144100001310,15,16,25—M20x2 nut set for the 3-blade saildrive prop, 15–20″: nut 1441000019 with 2 set screws, locking screw M8x20 1179910820, washer 4772120001, threadlocker, 5 mm Allen key. AB Marine lists M20x2 for the Yanmar SD40, SD50 and SD60; Gori’s own sheets do not name the drives.
Shock absorbers140046000010,26—Shock absorber (Gori: shock-torque absorber), the rubber bushing between the splined inner hub and the blade housing of the 3-blade Overdrive saildrive prop, 15 and 16.5″.
Shock absorbers140048000015,16,26—Shock absorber (rubber hub bushing) for the 3-blade saildrive prop, 18 and 20″, Overdrive and Single Pitch.
Shock absorbers140049000026—Shock absorber (rubber hub bushing) for the 3-blade saildrive prop, 22–26″ (the ZF SD15 size). Only one dealer lists it; Gori has no manual for this size online.
Plain bearing (bushing)1400440000 · 140043000010,15,16,27—PEEK plain bushings for the 3-blade saildrive prop, 15–20″ (Overdrive and Single Pitch): 1400440000 is the forward one (Gori: bushing 2), 1400430000 the aft one (bushing 1). The dealer recommends changing both together.
Plain bearing (bushing)1400440110 · 140043011027—PEEK plain bushings, forward (1400440110) and aft (1400430110), for the 3-blade saildrive prop 22–26″ (ZF SD15 size). Only one dealer lists them.
Blade pin14051000003—Blade pin for the 2-blade saildrive prop, 2 per propeller, each locked by two M8x12 set screws 1401300000.
Blade pin15050000006,10,7—Blade pin for the 3-blade 15 and 16.5″ (shaft and saildrive, Overdrive and Single Pitch), 3 per propeller, locked by M4x8 countersunk screws 1179910408.
Blade pin151200000012,15,16—Blade pin for the 3-blade 18 and 20″ (shaft and saildrive, Overdrive and Single Pitch), 3 per propeller.
Blade pin151300000012,17,18—Blade pin for the 3-blade 22–26″ (Overdrive and Single Pitch, 3 per propeller) and the 4-blade 23–27″ (4 per propeller).
Blade pin151400000012—Blade pin for the 3-blade Overdrive 28 and 30″, 3 per propeller.
Blade pin15140B422018—Blade pin for the 4-blade 29 and 32″, 4 per propeller.
Centre gear wheel14330000006,10,7—Centre gear wheel, 3-blade 15 and 16.5″ (shaft and saildrive, Overdrive and Single Pitch).
Centre gear wheel140710000012,15,16—Centre gear wheel, 3-blade 18 and 20″ (shaft and saildrive, Overdrive and Single Pitch).
Centre gear wheel140720000012,17—Centre gear wheel, 3-blade shaft prop 22, 24 and 26″ (Overdrive and Single Pitch).
Centre gear wheel144000000012—Centre gear wheel, 3-blade Overdrive shaft prop 28 and 30″.
Threadlocker14100000003,12,18,25—Gori threadlocker, Bondchem WT03 on Gori’s sheets; it comes with every propeller and every service set. Gori’s US distributor supplies Loctite 243 (blue, medium strength) instead. Neither can be applied under water.
C-spanner14440000006,7,28—C-spanner for the hub jacket, 3-blade shaft prop 15 and 16.5″ (dealer code 144400).
C-spanner140670000010,12,28—C-spanner for the 3-blade saildrive prop 15–20″ and the 3-blade shaft prop 18 and 20″ (dealer code 140670).
C-spanner140630000012,28—C-spanner for the 3-blade shaft prop 22–26″ (dealer code 140630).
C-spanner140980000012,28—C-spanner for the 3-blade shaft prop 28 and 30″ (dealer code 140980).
Propeller puller15260000006,7,29—Hub puller for the 3-blade shaft prop 15 and 16.5″ (dealer code 152600).
Propeller puller152700000012,29—Hub puller for the 3-blade shaft prop 18 and 20″ (dealer code 152700).
Propeller puller152800000012,29—Hub puller for the 3-blade shaft prop 22–26″ (dealer code 152800).
Propeller puller152900000012,29—Hub puller for the 3-blade shaft prop 28 and 30″ (dealer code 152900).

Numbers checked against the sources below on 13 October 2026. Always confirm against your serial number and exact type before ordering.

Service intervals

TaskInterval
PropellerBefore every trip, and above all after the boat has been idle: check that it opens ahead and astern; shift ahead and astern a few times to clear fouling from the gear teeth12
AnodeCheck at every haul-out; replace the collar and aft anodes once more than 50 % is gone (AB Marine’s sheets say 55 %)3,12,18,25
GreaseAt every haul-out and before lay-up: clean it, then grease the blade gear teeth and the centre gear; left dry in the air, the bronze oxidises and the blades can seize30,12
Blade stops3- and 4-blade: check every year and replace when worn; there is no fixed number of hours25
Full serviceAs needed, by Gori or a local distributor; Gori asks you to send the propeller in right after the autumn haul-out, not in spring30

From Gori’s manuals and FAQ; for the blade stops from AB Marine’s 2025 instructions. Gori ties these jobs to trips and haul-outs, not to engine hours.

Specifications

TypeGeared folding propeller: the blades open and fold together. On the 3- and 4-blade they pivot 180° between ahead and astern, so the same leading edge and profile work in both directions. In Overdrive they drive ahead from the reversed position with about 20 % more pitch (AB Marine: roughly 2–3″, e.g. 17″ becomes about 20″)31,12,32
Models2-blade (shaft and saildrive); 3-blade Overdrive (OD, shaft and saildrive); 3-blade Single Pitch (SP: the same hub without Overdrive, the same pitch ahead and astern); 4-blade Overdrive (shaft). Also the 2-blade Racing (375–530 mm, shaft, saildrive and Hydrodrive) and the 3-blade Hybrid, whose blades can be locked open for regeneration33,34,35,36,31,37
Propeller sizes2-blade 11.5–18″ (saildrive 11.5–12.5″ for Bukh DV8/DV10 and Volvo MB2A with the 50S leg, 13–18″ LH for Bukh, Volvo and Yanmar saildrives). 3-blade OD 15–30″, pitch 9–24″; saildrive 15–20″, and 22–26″ for the ZF SD15. 3-blade SP 15–20″ LH (shaft and saildrive), 22–30″ RH (shaft). 4-blade 21–32″, LH and RH33,38,34,39,35,36,40
Power2-blade for engines up to about 60 hp (44 kW); 3-blade from about 10 hp (7 kW) to about 300 hp (221 kW); 4-blade from about 200 hp, or where a large enough 3-blade does not fit33,34,36
SaildriveFits most saildrives (Volvo Penta, Bukh, Yanmar, Oceanvolt, Nanni, Vetus and others). The splined inner hub sits in a rubber shock absorber that takes up shock and insulates the propeller electrically from the leg. Since 2022 also a 22–26″ 3-blade (OD and SP) for the ZF SD15, which Yanmar and Nanni fit to their 110–150 hp engines33,40
MountingShaft: Gori makes the nut to order for each shaft thread; socket 22 mm (2-blade and 3-blade 15–16.5″), 30 mm (18–20″), 36 mm (22–26″), 50 mm (28–30″). 2-blade: shaft up to 1.125″/30 mm on props up to 15″, 1.375″/35 mm on 16.5–18″. Saildrive: Gori nut set M16x2 or M20x2 depending on the drive, 24 mm socket (3-blade). Socket sizes and shaft limits from AB Marine12,41,42,38,25
Propeller nut torquePropeller nut (Gori). Saildrive: M16x2 60 Nm, M20x2 100 Nm. Shaft, thread greased and taper dry: 1/2-13 UNC 32 Nm, M14x2 37, M14x1.5 40, 5/8-11 UNC 52, M16x2 53, M16x1.5 57, M18x2.5 70, 3/4-10 UNC 81, M20x2.5 91, M20x2 96, M20x1.5 102, M22x2.5 116, 7/8-9 UNC 118, M24x3 135, M24x2 144, 1-8 UNC 151, 1-12 UNF 160, M27x2 198, 1 1/8-7 UNC 200, M30x2 245, 1 1/4-7 UNC 260, M33x2 305, M36x3 335, 1 1/2-6 UNC 335, M40x3 400, M42x3 440, 1 3/4-5 UNC 450, M45x3.5 490 Nm10,15,16,5,12,18
Tightening torquesSaildrive nut-locking screw M8: 15 Nm, set with Bondchem WT03 threadlocker. AB Marine’s US sheets differ in places: shaft nut M16x2 60 Nm instead of 53, saildrive nut M20x2 88–98 Nm instead of 100; the figures above are Gori’s3,15,25,41
MaterialBronze; Gori’s US distributor AB Marine specifies nickel-aluminium bronze (NiBrAl)30,43
LubricationWater-resistant grease on the blade gear teeth and the centre gear after cleaning; AB Marine names a lithium-based waterproof grease. Gori gives no interval in hours30,25
CleaningScrape off the barnacles, then leave the propeller overnight in a bucket of household vinegar. Against fouling, Gori has only seen Propspeed work reliably, applied exactly to its instructions30
Years builtFolding propellers since 1975; 3-blade with Overdrive since 1994; 22–26″ saildrive version since 202231,34,40

Good to know

  • Under sail with the engine off, put the gear lever in reverse: the shaft stops, and the blades fold and stay folded instead of windmilling.12
  • Into Overdrive: let the boat move astern under power, then shift to forward; the blades stay reversed and drive ahead at the coarser pitch. Back to normal pitch: while moving ahead, go to neutral so the blades fold (a short blip into reverse stops the shaft sooner), then shift to forward again.30
  • Harbour manoeuvres often leave the propeller in Overdrive. Check the maximum rpm on the tachometer before heading out to see which mode you are in, never run at full throttle in Overdrive, and use it only in calm water or when motor-sailing.12
  • To take a 3- or 4-blade Gori off, leave the blades on: remove the three set screws, wedge a piece of wood between a blade tip and the hull, and unscrew the hub jacket with the C-spanner. If it is tight, warm it with a hairdryer.30
  • On a saildrive, use only the nut that came with the Gori: a wrong nut can lose the propeller or connect it electrically to the leg. Keep oil and other petroleum products off the rubber shock absorber (water or soap helps it slide on), and give the threadlocker about 30 minutes before launching.25,5
  • Blades, pins and hub are a numbered, balanced set: put every blade back in its own position. Blade numbers carry the size (3118012001 = 3-blade Overdrive blade 18x12 RH, 3118012002 the LH blade, 3118012011 the Single Pitch), and Gori prefers to change blades at the factory so it can rebalance the propeller.5,12

Fitted in

Boats whose builder lists it as standard or optional equipment:

  • Bavaria 40 Cruiser — Gori 3-blade (Cruiser 40: option on the lists from autumn 2011 (‘Gori folding propeller, 3-blade’) · Cruiser 40 S: standard)

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Sources

  1. anodefactory.co.uk/products/zinkanod-gori-axel-2-blade-saildrive-o-13-18
  2. bluebottlemarine.com/products/anodes-zinc-propeller-gori.html
  3. gori-propeller.com/app/uploads/sites/5/2023/04/Manual-BL2-SD-A4-1.pdf
  4. getaprop.com/gori-propeller-zinc-collar
  5. gori-propeller.com/app/uploads/sites/5/2023/04/Installation-instruction-2-bl-shaft_080520…
  6. gori-propeller.com/app/uploads/sites/5/2023/04/Manual-15-16_5-3bl-Overdrive-Shaft-0205202…
  7. gori-propeller.com/app/uploads/sites/5/2024/06/Manual-15-16_5-Shaft-3bl-SP_28062024.pdf
  8. getaprop.com/gori-split-ring-kit-15-16.5-propellers
  9. anodefactory.co.uk/products/zinkanod-gori-axel-3-blade-saildrive-o-15-16-5
  10. gori-propeller.com/app/uploads/sites/5/2023/04/Manual-075-165-BL3-OD-Sail_Drive-1.pdf
  11. anodefactory.co.uk/products/zinkanod-gori-axel-3-blade-o-18-20
  12. gori-propeller.com/app/uploads/sites/5/2023/04/Manual-18-20-22-24-26-28-30-Overdrive-Shaf…
  13. gori-propeller.com/app/uploads/sites/5/2023/11/Manual-18-20-Shaft-3bl-SP_27052024.pdf
  14. anodefactory.co.uk/products/zinkanod-gori-axel-3-blade-saildrive-o-18-20
  15. gori-propeller.com/app/uploads/sites/5/2023/04/Manual-18-20-BL3-OD-Sail_Drive-1.pdf
  16. gori-propeller.com/app/uploads/sites/5/2024/09/Manual-18-20-BL3-SP-Sail_Drive-05092024.pdf
  17. gori-propeller.com/app/uploads/sites/5/2024/05/Manual-22-24-26-Shaft-3bl-SP_23052024.pdf
  18. gori-propeller.com/app/uploads/sites/5/2023/04/Manual-23-25-27-29-32-Shaft-4bl-OD_1212202…
  19. anodefactory.co.uk/products/zinkanod-gori-propeller-nut-o-15-16-5
  20. getaprop.com/gori-propeller-triangle-anode
  21. anodefactory.co.uk/products/zinkanod-gori-propeller-nut-o-18-20
  22. anodefactory.co.uk/products/zinkanod-gori-propeller-nut-o-22-26
  23. anodefactory.co.uk/products/zinkanod-gori-propeller-nut-o-28-30
  24. getaprop.com/gori-propeller-flexible-stops
  25. ab-marine.com/wp-content/uploads/2025/01/GORI-3-Blade-Saildrive-Installation-Maintenance-…
  26. getaprop.com/gori-3-blade-saildrive-propeller-flex-hub
  27. getaprop.com/gori-3-blade-saildrive-propeller-peek-bushing
  28. getaprop.com/gori-propeller-c-spanner
  29. getaprop.com/gori-prop-puller
  30. gori-propeller.com/faq/
  31. gori-propeller.com/app/uploads/sites/5/2022/02/26685_BSI_GORI_Propeller_Produktfolder_12s…
  32. ab-marine.com/wp-content/uploads/2022/03/GORI-34-blade-Overdrive-Explanation-JQ.pdf
  33. gori-propeller.com/product/2-blade-sail-drive/
  34. gori-propeller.com/product/3-blade-folding-overdrive-propeller/
  35. gori-propeller.com/product/3-blade-single-pitch-folding-propeller/
  36. gori-propeller.com/product/4-blade-folding-propeller/
  37. gori-propeller.com/product/hybrid-propeller/
  38. ab-marine.com/folding/gori/gori-2-blade/
  39. ab-marine.com/gori/gori-3-blade/
  40. gori-propeller.com/blog/gori-propeller-expand-range-of-3-blade-folding-propellers/
  41. ab-marine.com/wp-content/uploads/2025/01/GORI-3-Blade-Shaft-Installation-Maintenance-Inst…
  42. ab-marine.com/wp-content/uploads/2022/03/GORI-2-Blade-Shaft-Installation-Maintenance-Inst…
  43. ab-marine.com/gori/

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