Outboards

Mickboy21

Okay so I've got a fiberglass boat around 15ft long and picked up a fairly big engine that i got cheap its a suzuki 60hp , i put it on the boat and the boat tipped back (too much weight) it fits the transom but no holes to line up with the mounting screws ,is this engine a no no ? Pics of boat and engine included
Thanks

neris

Way to big by the looks of that boat. Probably looking at 25-30 for that size.

Mickboy21

neris wrote: »

Way to big by the looks of that boat. Probably looking at 25-30 for that size.

Will she just sink wirh that 😂😂

Agent_47

Mickboy21 wrote: »

Will she just sink wirh that 😂😂

When you add the gas tank it will!

nokiatom

That boat was never designed for an engine that size. You would be on a suicide mission. Too much power, the boat couldn't handle it

AndyBoBandy

It’s definitely in the Jeremy Clarkson category of engine size/boat ratio i.e. way too big!

Ideal size for that boat would be about 15-20hp, 25-30hp and you are definitely at the upper end of the safety scale.

nokiatom

as the saying goes...''I think we need a bigger boat''!

nokiatom

https://www.youtube.com/watch?v=EZtGchUcIu4

Mickboy21

nokiatom wrote: »

That boat was never designed for an engine that size. You would be on a suicide mission. Too much power, the boat couldn't handle it

I see , its not intended to go at speed just to drive out mabey 100ft or a bit more off the harbour and sit there fishing ,, there will be a few of us in the boat , we sat it up on the transom it does fit but I'm afraid of it breaking with the engine vibrations

fergal.b

The transom wont be rated for that size motor and the forces it will put on it so could easily snap the transom off. If you can find a makers name on the boat you will be able to look up what it's rated for, I would say 15 - 20 hp.






.

nokiatom

With that size engine and three or four people on the stern of the boat I would be worried about stability too.

elperello

OP
Have a look in adverts and DD at boats like your own.
Take note of the engines with them that will confirm what others are saying ie. the engine is too big for your boat.

All is not lost.
If your engine is a runner you should be able to sell/swap it for something more suitable.

fergal.b

Just on another note, towing the boat on the road with that size engine will also cause a lot of stress on the transom one bump could multiply the weight of the engine and the motion is like bending a piece of metal back and forth so before you head out again just check along the top of the transom and in the corners for cracks.

AndyBoBandy

Just taken this photo of a similar sized boat, with an (old) 40hp on it, which looks about upper limit size for that size boat.

AndyBoBandy

Mickboy21 wrote: »

its not intended to go at speed. there will be a few of us in the boat

It would only take 1 moment of someone leaning/falling on the throttle, or even messing, with the engine turned either side of centre, for everyone on the boat to be taking an instant dip in the sea, while a 60hp engine going in circles tries to grind everyone up as fish food!!

HeidiHeidi

AndyBoBandy wrote: »

It would only take 1 moment of someone leaning/falling on the throttle, or even messing, with the engine turned either side of centre, for everyone on the boat to be taking an instant dip in the sea, while a 60hp engine going in circles tries to grind everyone up as fish food!!

Jesus, please tell me the OP was planning on having (and using) a kill cord :eek::eek:


I know next to nothing about motor boats, but even to my eye putting an engine that size, weight and power on a boat that size would be nuts.

Mickboy21

elperello wrote: »

OP
Have a look in adverts and DD at boats like your own.
Take note of the engines with them that will confirm what others are saying ie. the engine is too big for your boat.

All is not lost.
If your engine is a runner you should be able to sell/swap it for something more suitable.

Thanks lads appreciate it hope to swap her down to max 30

Mickboy21

fergal.b wrote: »

Just on another note, towing the boat on the road with that size engine will also cause a lot of stress on the transom one bump could multiply the weight of the engine and the motion is like bending a piece of metal back and forth so before you head out again just check along the top of the transom and in the corners for cracks.

Since were talking transoms here, how can they be reinforced ?ive seen a plank of wood clamped on some

Mickboy21

AndyBoBandy wrote: »

It would only take 1 moment of someone leaning/falling on the throttle, or even messing, with the engine turned either side of centre, for everyone on the boat to be taking an instant dip in the sea, while a 60hp engine going in circles tries to grind everyone up as fish food!!

Does anyone know of a place i can bring the boat to have it looked at

elperello

Mickboy21 wrote: »

Does anyone know of a place i can bring the boat to have it looked at

If you post your location and what you want done to the boat it will help.

By the way if you look at Andy's pic above you will note that the boat has two engines. One big, one small. That is a good set up if you are venturing out to sea.
Alternative means of propulsion is always a good idea.

gctest50

Mickboy21 wrote: »

Thanks lads appreciate it hope to swap her down to max 30

If the engine is good, it'd be a better idea to swap the boat for something a bit bigger


Then you could have a second small engine to get you home

( or unscrew and throw over the side as an anchor if you are being washed near rocks - better than nothing )

Mickboy21

elperello wrote: »

If you post your location and what you want done to the boat it will help.

By the way if you look at Andy's pic above you will note that the boat has two engines. One big, one small. That is a good set up if you are venturing out to sea.
Alternative means of propulsion is always a good idea.

Bray area, i just want someone thats knows what there at to look it over and tell me if it needs any repairs or so before taking it out

Mickboy21

gctest50 wrote: »

If the engine is good, it'd be a better idea to swap the boat for something a bit bigger


Then you could have a second small engine to get you home

( or unscrew and throw over the side as an anchor if you are being washed near rocks - better than nothing )

Ya reckon it be easier to swap the boat?

gctest50

It'd be better if there is a few of ye

gctest50

Sell your set up and pick up this *kind* of thing :


https://www.donedeal.ie/hobbies-for-sale/fishing-and-pleasure-6-metre-inver-motor-sailor/20609560

fergal.b

Mickboy21 wrote: »

Since were talking transoms here, how can they be reinforced ?ive seen a plank of wood clamped on some

Most of quick fixes like that just spread the load to another part of the boat.

One boat I did had a stainless steel plate across the transom.




But it was just covering up the mess underneath when I removed it and the fiberglass.



I had to cut off the back of the boat to remove all the bad wood.






It was quite a big job "not saying that yours is built the same way" but you should not need to reinforce your transom with anything they are built to that spec for a reason not just the strength of the transom but also the stability and handling.

Mickboy21

fergal.b wrote: »

Most of quick fixes like that just spread the load to another part of the boat.

One boat I did had a stainless steel plate across the transom.




But it was just covering up the mess underneath when I removed it and the fiberglass.



I had to cut off the back of the boat to remove all the bad wood.






It was quite a big job "not saying that yours is built the same way" but you should not need to reinforce your transom with anything they are built to that spec for a reason not just the strength of the transom but also the stability and handling.

That is a very impressive build ,well done fair play

butrasgali

Inquiry....would a 3.5 hp outboard be strong enough on a 10 foot rib..I would be carrying 2 adult and 2 kids in it..would anyone know please

nokiatom

butrasgali wrote: »

Inquiry....would a 3.5 hp outboard be strong enough on a 10 foot rib..I would be carrying 2 adult and 2 kids in it..would anyone know please

Is it a rib or a rubber dinghy? Would you be using it on the sea r a river or lake?

butrasgali

Not sure would you call it a rib..it has a fixed transom and a solid floor and the rollers for transport to the water

AndyBoBandy

is the solid floor made from fibreglass, and V shaped, like this;



or is the solid floor just wooden slats, like this;




either way, a 3.5HP engine would most likely move you alright, just very slowly.

pedroeibar1

butrasgali wrote: »

Not sure would you call it a rib..it has a fixed transom and a solid floor and the rollers for transport to the water

Sounds like a rubber dinghy with a two-piece ply floor rather than a RIB.
If so, using it for 2 adults and two children would be marginal IMO and dangerous outside very protected waters. I’ve been using (for years) an Avon Rover 280 as a tender to/from mooring which is about the same size (9’6”). It is rated maximum four persons/660lbs and 8HP. Power is a 3 HP Honda (aircooled, replaced a 2.5 Mercury) and that is more than adequate. I cannot see how an 8HP would work on it! Two adults, or one plus two/3 kids is comfortable and safe but two adults plus two kids would not.


If your model has a fiberglass hull below the tubes it would marginally change the above, a 3.5 HP would be adequate but a higher powered engine would be better.

nokiatom

AndyBoBandy wrote: »

is the solid floor made from fibreglass, and V shaped, like this;



or is the solid floor just wooden slats, like this;




either way, a 3.5HP engine would most likely move you alright, just very slowly.

4 people in a boat that size and an engine and a tank would in my opinion would be pretty packed and uncomfortable

butrasgali

Thanks it looks like the bottom picture..no v hull......thanks for the advise

AndyBoBandy

butrasgali wrote: »

Thanks it looks like the bottom picture..no v hull......thanks for the advise

so its not a RIB then (Rigid Inflatable Boat*), it's just an inflatable dingy.

a 3.5hp would be sufficient for a boat of this type, but remember it's only really designed for short trips in calm waters/lakes or as a tender. You wouldn't be going over to Irelands Eye on a boat like this (or if you were, you wouldn't have 4 persons on board, and you'd be going on a flat calm day).

*I've always believed that what RIB stood for, but could be corrected..

neris

AndyBoBandy wrote: »

so its not a RIB then (Rigid Inflatable Boat*), it's just an inflatable dingy.

a 3.5hp would be sufficient for a boat of this type, but remember it's only really designed for short trips in calm waters/lakes or as a tender. You wouldn't be going over to Irelands Eye on a boat like this (or if you were, you wouldn't have 4 persons on board, and you'd be going on a flat calm day).

*I've always believed that what RIB stood for, but could be corrected..

Youve not seen the East European lads fishing in the middle of the sound then

nokiatom

neris wrote: »

Youve not seen the East European lads fishing in the middle of the sound then

but how many had to be rescued and there was a few drownings too