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Old 12 June 2020, 12:55   #1
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Hello all new member here from Dublin. Just bought my first rib for myself which my Dad had since 2004 . Its a mid 90s Osprey 5.15 with a 2000 Yamaha 50 four stroke, bit underpowered but will do until I can afford to re-power it . Heres a pic of the new toy
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Old 12 June 2020, 13:08   #2
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Hello all new member here from Dublin. Just bought my first rib for myself which my Dad had since 2004 . Its a mid 90s Osprey 5.15 with a 2000 Yamaha 50 four stroke, bit underpowered but will do until I can afford to re-power it . Heres a pic of the new toy


Welcome

U sure itís a 5.15 ? Looks quite beamy. Viper 5.25 with a beam of 2.44m was a mid 90s boat. Tape measure should confirm as 5.15 is only 2.10m beam. Also, 5.25 takes 115hp whereas 5.15 max 65hp. Youíll be hoping itís a Viper !
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Old 12 June 2020, 13:11   #3
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Welcome

U sure it’s a 5.15 ? Looks quite beamy. Viper 5.25 with a beam of 2.44m was a mid 90s boat. Tape measure should confirm as 5.15 is only 2.10m beam. Also, 5.25 takes 115hp whereas 5.15 max 65hp. You’ll be hoping it’s a Viper !
No was always just told it was a 5.15 Ill measure it when im back at the lockup and see what beam it has It is smaller than a Sparrowhawk so don't think its a viper
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Old 12 June 2020, 13:20   #4
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Re-powering from 50 to max 65 ainít gonna sparkle much more. 50 to max 115 different story. ID plate usually on inner transom but may be long gone.
Hope u have a Viper, brilliant RIB for size
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Old 12 June 2020, 13:25   #5
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Re-powering from 50 to max 65 ainít gonna sparkle much more. 50 to max 115 different story. ID plate usually on inner transom but may be long gone.
Hope u have a Viper, brilliant RIB for size
Plates long gong im not even sure if its mid 90s boat its around a long time Ö Might be a issue with the prop then because it struggles to plane with 3 people onboard hopefully can get it out on the water soon and can try a few things to see do they make and difference
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Old 17 June 2020, 22:57   #6
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its 2.10m wide so shes a 5.15 ... i think im brave enough to throw a 75hp 2 stroke Yam on the back its only 10hp over the recomended hp
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Old 18 June 2020, 07:25   #7
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65 is the max, not a recommended hp, but Iím sure you know that. Your boat, not mine, so enjoy
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Old 18 June 2020, 07:32   #8
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its 2.10m wide so shes a 5.15 ... i think im brave enough to throw a 75hp 2 stroke Yam on the back its only 10hp over the recomended hp


Go for a 90HP Yam, pretty much the same engine apart from carbs and a couple of other things
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Old 05 August 2020, 18:32   #9
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75/90 2 stroke Yamaha is only 10kg heavier than the 4 stroke that’s on it at the mo so the transom will handle it ..... it had a 75 Suzuki 2 stroke on it when we got it but it was stolen off the boat outside my dads home so it can handle a 75hp
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