Review of RJ 85
Basic specs..
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.
The RJ 85 is equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a gennaker or a spinnaker for optimal speed.
The RJ 85 is equipped with a long keel. A full keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.
The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.
The boat can enter even shallow marinas as the draft is just about 1.26 - 1.36 meter (4.13 - 4.43 ft) dependent on the load. See immersion rate below.
Sailing characteristics
This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.
What is Capsize Screening Formula (CSF)?
The capsize screening value for RJ 85 is 1.59, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.
What is Theoretical Maximum Hull Speed?
The theoretical maximal speed of a displacement boat of this length is 6.3 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.
The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for RJ 85 is about 92 kg/cm, alternatively 515 lbs/inch. Meaning: if you load 92 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 515 lbs cargo on the boat it will sink 1 inch.
Sailing statistics
This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.
What is Motion Comfort Ratio (MCR)?
What is L/B (Length Beam Ratio)?
What is a Ballast Ratio?
What is Displacement Length Ratio?
What is SA/D (Sail Area Displacement ratio)?
What is Relative Speed Performance?
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 17m 2 (182 ft 2 ). Based on this, your favourite maritime shop can tell you the quantity you need.
Are your sails worn out? You might find your next sail here: Sails for Sale
If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.
| Usage | Length | Diameter | ||
| Mainsail halyard | 24.3 m | (79.7 feet) | 8 mm | (5/16 inch) |
| Jib/genoa halyard | 24.3 m | (79.7 feet) | 8 mm | (5/16 inch) |
| Spinnaker halyard | 24.3 m | (79.7 feet) | 8 mm | (5/16 inch) |
| Jib sheet | 8.6 m | (28.1 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 8.6 m | (28.1 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 21.4 m | (70.1 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 18.8 m | (61.7 feet) | 10 mm | (3/8 inch) |
| Cunningham | 3.1 m | (10.2 feet) | 8 mm | (5/16 inch) |
| Kickingstrap | 6.2 m | (20.3 feet) | 8 mm | (5/16 inch) |
| Clew-outhaul | 6.2 m | (20.3 feet) | 8 mm | (5/16 inch) |
This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.
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Innehåll RJ 85
- Beskrivning
- Forumdiskussioner
- Referenser o länkar
RJ 85 konstruerades 1969 av Rolf Jacobsson och tillverkades huvudsakligen under 1970-talet. Enligt uppgift finns det några som är tillverkade på 1980-talet också. Totalt har det byggt runt 500 exemplar. RJ 85 är självbyggen. Man hyrde formarna av Rolf Jacobsson. De flesta RJ 85 tillverkades i lokalerna från det nedlagda pappersbruket Tollare Bruk i Saltsjö-Boo, men formar fanns även i Göteborg (Kvarnfallets varv AB i Mölndal) och enligt uppgift har även några RJ 85:or tillverkats i Danmark.
Masthöjd ca 11,5m
- Båttyp Segelbåt
- Konstruktör Rolf Jacobsson
- Tillverkare Rolf Jacobsson / Tollare Bruk
| Last Name | Score |
|---|---|
| Längd över allt(m) | 8.55 |
| Skrovlängd(m) | 8.55 |
| Längd vattenlinjen(m) | 6.7 |
| Bredd (m) | 2.05 |
| Höjd(m) | |
| Vikt/Deplacement(kg) | 2200 |
| Djupgående (m) | 1.26 |
| Minsta djupgående (m) |
Konstruktion
| Konstruktör | Rolf Jacobsson |
| Tillverkare | Rolf Jacobsson / Tollare Bruk |
| Tillverkningsår | År 1969 - 1977 |
| Költyp | Långköl |
| Kölmaterial | Bly |
| Kölvikt (kg) | 1200 |
| Roder | Innanpåliggande |
| Akter | Negativ |
| Skrov | Plast Skrov i handupplagt enkellaminat. Basinrede i plast. Bottenstockar saknas |
Utrustning & Motor
| Motor | Vanligtvis utombordare, men finns även exemplar med inombordare. |
| Typ av framdrivning | |
| Bränsletank (Liter) | 0 |
| Vattentank (Liter) | 0 |
| Typ av rigg | Partialrigg |
| Rigg beskrivning | 7/8-del |
| Riggmått I (m) | 8.28 |
| Riggmått J (m) | 3.24 |
| Riggmått P (m) | 9.2 |
| Riggmått E (m) | 3.1 |
| Övrigt |
| Total segelarea (m2) | |
| Storsegel (m2) | 16.4 |
| Fock (m2) | 9.3 |
| Självslående fock (m2) | |
| Genua (m2) | 20 |
| Genua 2 (m2) | 15 |
| Spinnaker (m2) | 50 |
Köp segel till RJ 85:
Storsegel från 22 200 SEK Fock från 25 200 SEK Spinnaker från 39 500SEK
Varierar mycket mellan olika exemplar, både vad gäller planlösning och kvalitet. Det fanns en inredningslösning att köpa som hade pentryt framme vid skottet. Flera byggde inredningen själv och då är den klassiska pentryplaceringen direkt vid nedgången mycket vanlig.
| Höjd i kabin (m) | 1.85 |
| Antalet kojplatser (st) | 4 - 4 |
SRS Klassificering
| SRS | 0.871 |
| SRS utan undanvindssegel | 0.848 |
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bra styvhet, klarar 10-13...
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Se fler Synpunkter
Proffsbesiktning.
Ej besiktigad
Priser ny båt
| År | Pris | Typ |
|---|---|---|
| 1973 | 18500 SEK | Självbygge |
Priser begagnade båtar
| År för affär | Prisintervall | Ant. affärer | Årsmodeller | Medelpris |
|---|---|---|---|---|
| 2001 | 55000 - 55000 | 1st | 1976-1976 | 55000 SEK |
| 2002 | 30000 - 49000 | 5st | 1970-1975 | 41000 SEK |
| 2003 | 32000 - 67000 | 5st | 1974-1978 | 44800 SEK |
| 2004 | 64000 - 64000 | 1st | 1980-1980 | 64000 SEK |
| 2005 | 36000 - 53000 | 3st | 1975-1977 | 42000 SEK |
| 2006 | 30000 - 62000 | 8st | Okänd-1979 | 38250 SEK |
| 2007 | 39000 - 53000 | 3st | Okänd-1976 | 44000 SEK |
| 2008 | 27000 - 36000 | 3st | Okänd-1978 | 31000 SEK |
| 2009 | 35000 - 65000 | 2st | Okänd-1974 | 50000 SEK |
| 2011 | 33000 - 33000 | 1st | 1974-1974 | 33000 SEK |
| 2013 | 50000 - 50000 | 1st | 1976-1976 | 50000 SEK |
| 2016 | 45000 - 45000 | 1st | 1975-1975 | 45000 SEK |
| 2017 | 12000 - 12000 | 1st | 1974-1974 | 12000 SEK |
Begagnatpriserna ovan avser faktiskt genomförda affärer inrapporterade av båtägare (ej begärda priser).
Skicka in prisuppgifter
Diskuterat i forumet
Rj 85 fã¶r 15000.
2007-04-05 13:59
Vilken vagga till en RJ 85?
2005-10-21 20:28
2005-03-25 23:10
Hur stora är RJ 85:orna inuti?
2004-10-12 13:00
Roder på RJ 85
2004-10-05 19:43
Bilder RJ 85
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