Outboard engines

[chipko]

For info the manufacturers claimed weights for the current crop of 15/20hp motors;

Tohatsu 43kg
Suzuki 44kg
Honda 46kg
Mercury/Mariner 47kg
Yamaha 51kg

All weights lightest in range….short shaft manual start on tiller.

[Fenlander]

Unless you have a disability related to arm strength elec start on this size of OB is a waste of money and added weight/complication you really don’t need.

[Pikey Dave]

Originally Posted by Fenlander

Unless you have a disability related to arm strength elec start on this size of OB is a waste of money and added weight/complication you really don’t need.

^^^^^^wot he said[emoji106]^^^^^

[Fenlander]

Having said elec start is usually not needed on portable outboards (up to 20hp) there is no doubt the 10hp and below motors are much lighter to pull over if that is a factor.

[Pikey Dave]

Originally Posted by Fenlander

Having said elec start is usually not needed on portable outboards (up to 20hp) there is no doubt the 10hp and below motors are much lighter to pull over if that is a factor.

My 8.5 stone missus can start our DF20 easy enough. That said, she can also swing an axe & has a mean right hook🥴

[Fenlander]

I'm not saying the DF20 or any other 15/20 are hard to pull over but the Mercury/Mariner/Tohatsu 9.8 4-stroke models are super easy in comparison... I perhaps notice more being an oldie?

[Blankton]

I had the 51kg Yamaha 4 stroke on a 3.1m ally floor sib, it was too heavy to the extent that it was hard to plane, just a lot of bow lift. I swapped for a 2 stroke and its made a huge difference.

[Stephen Potts]

Thank you.

[Stephen Potts]

That sounds good, thanks

[Stephen Potts]

That sounds right ��

[chipko]

Originally Posted by Fenlander

I'm not saying the DF20 or any other 15/20 are hard to pull over but

Our current Mariner 20 efi requires a concerted long hard pull (Oooer missus) to start hot or cold. Reckon it’s down to generating enough juice to fire up the battery less efi system.

By comparison our previous Suzuki 20, same battery less efi system was a doddle to start, hot or cold, with even a half hearted pull.

Any other Merc/Mariner/Tohatsu 15/20 efi owners find this??

[Steve509926]

Originally Posted by chipko

Our current Mariner 20 efi requires a concerted long hard pull (Oooer missus) to start hot or cold. Reckon it’s down to generating enough juice to fire up the battery less efi system.

By comparison our previous Suzuki 20, same battery less efi system was a doddle to start, hot or cold, with even a half hearted pull.

Any other Merc/Mariner/Tohatsu 15/20 efi owners find this??

Sane here chipko, 15 Merc EFI, 4 good pulls cold & 3 pulls hot..

[Steve509926]

Originally Posted by chipko

For info the manufacturers claimed weights for the current crop of 15/20hp motors;

Tohatsu 43kg
Suzuki 44kg
Honda 46kg
Mercury/Mariner 47kg
Yamaha 51kg

All weights lightest in range….short shaft manual start on tiller.

I wonder what mercury do to add an extre 4kg to the tohatsu engine?

[Fenlander]

Is it the gear on tiller and different tilt arrangement... or are they the same in those respects??

[Stephen Potts]

It's strange

[chipko]

Originally Posted by Steve509926

Sane here chipko, 15 Merc EFI, 4 good pulls cold & 3 pulls hot..

Annoying isn’t it.

Re weight differences. Merc/Mariner same as Tohatsu apart from the big tiller and hood. Reckon most of the extra weight must be in the big tiller. In it’s defence super nice to use as extra long, tiller mounted gear selector, vibration damping, fully adjustable in both height and rake for left or right hand use including throttle rotation reversal.

[Stephen Potts]

I see. Little bits of technology uping the weight

[Steve509926]

Not sure about the tilt arrangement, the obvious difference is the tiler gear change. Even so 4 kg is a lot for what is practically the same OB.

[Aj1986]

Hi guys I need some help please l, I bought my first rib boat Gemini 505, and it comes without engine, I want to buy one for it, but I’m a little confuse about the HP and if is better to buy 4 strokes or 2 strokes, I want use to fishing offshore around 6nm up to 15nm offshore, anyone can recommend a good outboard for it? Really appreciate thanks

[treerat]

Hi - outboards are like your favorite ice cream, loved by some, hated by others! To be honest, most of the main stream units will be fine, I prefer a Suzuki, but run a Honda at present.

There should be a plate on the boat, telling you the max size, probably some where between 65 and 90 hp I'd have though.

2 Vs 4 stroke, one is quieter, better on fuel but heavier, the other is easier to work on, can be more powerful for the weight but noisier and smelly when sat still. I'd not go back to a 2 stroke, but i was with 20 boats the weekend and not a 4 stroke between them - but they were using it for racing, not fishing and sitting still.

You're not the only one down there with the same boat - a conversation direct would be a good start - https://www.rib.net/forum/f8/gemini-...0-a-44582.html