Enlightenment 18 Posted May 1, 2023 Share Posted May 1, 2023 I need to buy an outboard for my new OLD Pelin Caribou 20 trailersailer which has an adjustable outboard mounting bracket. The last owner had a 9.9hp Johnson but it was left in his garage and got flooded a few months back in the bad weather. I would ideally prefer to get a short shaft 15hp so I could swap it between the yacht and my 3.3m inflatable. As I am living in a motorhome I don't want to carry 2 outboards around everywhere. Can the 20 trailer boat function with a short shaft and will the 40 kg motor greatly impact the sailing performance? opinions and advice would be greatly appreciated! THANKS [Photo] Quote Link to post Share on other sites
aardvarkash10 1,065 Posted May 1, 2023 Share Posted May 1, 2023 40kg on the stern may affect performance, but if you stow it centrally, not a lot. Can't comment on the suitability of a particular short shaft motor on your particular transom, but bear in mind that in a howling onshore gale and rising sea, having the prop riding in AND out of the water is not a splendid situation to find yourself in. Quote Link to post Share on other sites
Addem 120 Posted May 1, 2023 Share Posted May 1, 2023 My experience with transom mounted outboard is that you will need a Long shaft. Anything else will mean you will be a Fairweather sailor only. The effect of the rise and fall of a boat in a choppy sea on a transom mounted ob means it is a challenge to get a long shaft to bite and a short shaft will be hopeless. You might think it will be OK but the number of times I was caught up Harbour with wind against tide trying to get back to the ramp leaves me in no doubt. 40kgs on the transom is huge for a 20ft boat and will kill performance. You'd really struggle to lift it off the bracket while underway so it'll stay there. 3 Quote Link to post Share on other sites
harrytom 679 Posted May 2, 2023 Share Posted May 2, 2023 8hp 2 cylinder suzuki 2 stroke long shaft is what I had on a davidson m20 1 Quote Link to post Share on other sites
eruptn 103 Posted May 2, 2023 Share Posted May 2, 2023 The national guidelines is 0.25 hp per foot, so minimum is around 6hp with a bit of safety margin. As mentioned above only long shaft work well on the back of a TY. Props can make a big difference… look for a displacement or sail drive one Quote Link to post Share on other sites
Addem 120 Posted May 2, 2023 Share Posted May 2, 2023 20 minutes ago, eruptn said: The national guidelines is 0.25 hp per foot, so minimum is around 6hp with a bit of safety margin. As mentioned above only long shaft work well on the back of a TY. Props can make a big difference… look for a displacement or sail drive one Prop makes a huge difference. I changed my yummy to a high thrust and it like a turbo charger. 1 Quote Link to post Share on other sites
Frank 157 Posted May 2, 2023 Share Posted May 2, 2023 20 hours ago, Enlightenment said: I need to buy an outboard for my new OLD Pelin Caribou 20 trailersailer which has an adjustable outboard mounting bracket. The last owner had a 9.9hp Johnson but it was left in his garage and got flooded a few months back in the bad weather. I would ideally prefer to get a short shaft 15hp so I could swap it between the yacht and my 3.3m inflatable. As I am living in a motorhome I don't want to carry 2 outboards around everywhere. Can the 20 trailer boat function with a short shaft and will the 40 kg motor greatly impact the sailing performance? opinions and advice would be greatly appreciated! THANKS [Photo] 6- 8 hp would be plenty for both boats, your going to get sick of lugging a 15 hp OB real quick 3 Quote Link to post Share on other sites
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