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Old 05 December 2019, 18:01   #1
Country: UK - England
Town: Ryde. Isle of Wight
Boat name: Free Spirit
Make: Avon searider 5.4
Length: 5m +
Engine: 90 Mercury
Join Date: Jan 2018
Posts: 21
Auxiliary outboard

Hi Folks
What is the smallest aux outboard for an Avon Searider 5.4 as there seems to be very little room to fit anything, main engine 90hp 2stroke Mercury?

nick.hooper is offline   Reply With Quote
Old 05 December 2019, 18:11   #2
Country: UK - Scotland
Town: north ayrshire
Boat name: charlie girl
Make: reiver 3.8/regal3760
Length: 10m +
Engine: 40hp 2st 2x6lp 315
Join Date: Jul 2009
Posts: 2,638
Probably something like a 5hp yam 2 stroke its about the smallest thing that will push the boat. Next thing smaller is the little lightweights like the yam 2b or merc 2.2/2.5 or 3.5 but all a little small to be particularly usefull

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Old 06 December 2019, 03:42   #3
spartacus's Avatar
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 60hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,003
What Beam said.

Rule of thumb is roughly 1hp per meter. Tohatsu 5hp 2-stroke would be a good call too. You basically want something with a narrow engine cowl. When main engine is on hard lock there"s no contact with auxilliary. Look at long shaft too.

Also consider some sort of anchor point to ratchet the auxilliary in the tilted position, as the tilt locks on these smaller outboards wont stand up to the vibration when underway.
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Old 06 December 2019, 04:32   #4
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 6,349
consider a high thrust engine [yamaha] better at displacement speed, if you can mount it but not slew for steering set it up fixed and steer with the main engine not as responsive but will get you home ok it worked for me on my ribquest.
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Old 06 December 2019, 14:42   #5
Locozodiac's Avatar
Country: Other
Town: Lima-Peru
Boat name: Nautile
Make: Sea Rider 450 Rib
Length: 4m +
Engine: Tohatsu 5/18/30 HP
Join Date: Sep 2007
Posts: 1,985
Although a 5 HP motor will take you back to terra firme won't work well on extreme currents, harsh winds, personally wouldn't dare go any less than a long shaft 9.8 HP motor with a high trust prop. If can find a 2 strokes motor much better...

Happy Boating
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