Dory 13 outboard size

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dajoco

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Hi all, I have a dell quay dory 13 that’s rated to hold a 50hp outboard.

I was planning to fit a 40hp that’s currently fitted to my CJR dory14 until I realised that it was a short shaft (after removing it:rolleyes:).

I have a 60hp Yamaha/Mariner that’s in great working order, which leads me to my question.

I know this is probably a stupid one, but will fitting the 60hp be an issue, being that it’s 10hp overpowered? There’s no plans to use the boat like a speed boat. Just some early morning fishing days. The 60hp has never let me down, so would be a shame to have to get rid of it for a small one.

cheers
Dave
 
Main issue will be the weight, especially if it is a 4stroke. So check the weights of the Yam 50 and 60.
 
dajoco said:
Hi all, I have a dell quay dory 13 that’s rated to hold a 50hp outboard.

I was planning to fit a 40hp that’s currently fitted to my CJR dory14 until I realised that it was a short shaft (after removing it:rolleyes:).

I have a 60hp Yamaha/Mariner that’s in great working order, which leads me to my question.

I know this is probably a stupid one, but will fitting the 60hp be an issue, being that it’s 10hp overpowered? There’s no plans to use the boat like a speed boat. Just some early morning fishing days. The 60hp has never let me down, so would be a shame to have to get rid of it for a small one.

cheers
Dave
Click to expand...
Dave. I’d say there isn’t much difference in weight between the rated and the engine you have. But like all boats of a certain vintage, you’ll need to make sure the transom is up to it. These were made alongside fletchers for period of time. The biggest worry with any fletcher is usually the transom.
Id also say that a good friend had this exact boat. He had a Yamaha 40 on the back. She went really well up to a point. To explain…these hulls have a hook on them. The hook forces the bow down into the water to help planing. But that hook, also has an effect when a certain speed is reached on plane. The more power applied, the more the bow was forced down into the water. This meant that it was like a rocket ship from low speed onto plane and up to about late 20’s touching 30. It just hit a wall. Incredible result of this was that the boat could see around mid 20’s at a canter and not much over half throttle. She would only gain another few mph at full throttle. Just with the effect of the hook. She just ran much happier with less throttle and with a nicer attitude on the hull too.
Anyway. I think you’ll be fine if it’s a 2 stroke 60 from around the same era as the intended 40/50 she was rated for. They are almost identical engines as each other for weight. But can’t stress enough around making sure the transom is up to the weight and forces acted upon it.
Good luck.
 
Many thanks for the reply’s guys. Yes the 60hp is a 2 stroke and transom is solid. Not as much as a hair line crack in the gel coat.

like I said before, speed is not my goal. The outboard was originally on an old fletcher speedboat. I’ve had my fun ripping around, but fishing with the kids is all I’m interested in using this one for.

many thanks and again for the quick reply’s(y)
Dave
 
dajoco said:
Many thanks for the reply’s guys. Yes the 60hp is a 2 stroke and transom is solid. Not as much as a hair line crack in the gel coat.

like I said before, speed is not my goal. The outboard was originally on an old fletcher speedboat. I’ve had my fun ripping around, but fishing with the kids is all I’m interested in using this one for.

many thanks and again for the quick reply’s(y)
Dave
Click to expand...
Excellent. Best of luck with her.
Just finally though. I’m sure you have already…but when checking if the transom is ok…it’s not so much the gel coat being cracked that is the sign of weakness…it’s the inner transom and the condition of the wood in there that needs an eye cast over it. Knock around it inside and out and listen for any change in tone that might indicate a worry. Sure she’s fine and I’m just being pedantic perhaps. Watch out for the double hull getting water trapped between the two skins too. Famous for it, these things. Most will have had a drain plug installed between the hulls by now, I’d think. Anyway. Enjoy
 
Cheers QBhoy! Looking forward to throwing it in the water next week. Outboard went on today and your right enough, there has been bungs fitted to the floor space. Had it tipped right up when I got it and not as much as a drip came out. Will do it again when I get it out the water to see if any gets in.

Couple of photos -
it’s a rough looking little thing, but will tidy it up for next year. More focused on using it for now.
Old outboard after a quick paint and clear coat
0794F8E5-0CAF-4B3C-82B3-5E0EE63ED983.jpeg C9AE06F1-9142-4724-9CC2-034B1CBC0E8E.jpeg

195A71A4-F17C-4E3C-AC8C-596E2B5C3A94.jpeg 74007137-5DF7-4031-A0E6-15B3426560F3.jpeg
 
dajoco said:
Cheers QBhoy! Looking forward to throwing it in the water next week. Outboard went on today and your right enough, there has been bungs fitted to the floor space. Had it tipped right up when I got it and not as much as a drip came out. Will do it again when I get it out the water to see if any gets in.

Couple of photos -
it’s a rough looking little thing, but will tidy it up for next year. More focused on using it for now.
Old outboard after a quick paint and clear coat
View attachment 140168 View attachment 140167

View attachment 140173 View attachment 140172
Click to expand...
That’s a superb engine. Made by Yamaha in those days. Bombproof things.
 
QBhoy said:
...Watch out for the double hull getting water trapped between the two skins too. Famous for it, these things. Most will have had a drain plug installed between the hulls by now...
Click to expand...

You already have a drain plug fitted but if in doubt have the trailer and boat weighted, then deduct motor and trailer weight to get the actual boat weight.
 
ChromeDome said:
You already have a drain plug fitted but if in doubt have the trailer and boat weighted, then deduct motor and trailer weight to get the actual boat weight.
Click to expand...
I can actually do this on the weigh bridge at work.

Any idea what the boat should weigh? (Taking into account that this is the 50hp rated dory13 and not the 40hp rated one if that makes any difference?)

many thanks
Dave
 
Just spotted an old dory advert that’s states the dell quay dory clubman should be 260kg dry weight.

this sound about right?
 
QBhoy said:
That’s a superb engine. Made by Yamaha in those days. Bombproof things.
Click to expand...
It had the odd issue when I first got it, but it’s a really simple engine to work on. Not much that can actually go wrong with it other than needing the odd diy service.
 
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