9.9 outboard Bollard pulling test , question.

[Taunto]

I have been searching the net for a bollard pulling test for 4 stroke 9.9 high thrust outboards. Could any one help , have you ever seen one , if so could you pass on the link , or can you remember the results . When talking to the dealers they all say their motor has the most thrust but i think there is quite a bit of BS here . I tend to think that the Yamaha 9.9 would have the best results with its high ratio gearbox and large prop but i just don't know and i cannot find a comparison anywhere . many tanks.
Taunto

 

[VicS]

I have been searching the net for a bollard pulling test for 4 stroke 9.9 high thrust outboards. Could any one help , have you ever seen one , if so could you pass on the link , or can you remember the results . When talking to the dealers they all say their motor has the most thrust but i think there is quite a bit of BS here . I tend to think that the Yamaha 9.9 would have the best results with its high ratio gearbox and large prop but i just don't know and i cannot find a comparison anywhere . many tanks.
Taunto

Results will be dependent on gear ratio and prop pitch with a size that allows the engine to reach max revs/power.

Not any people want to pull a static bollard but the figures are often quoted for electric outboards to make them seem comparable with higher powered conventional outboards

Wikipedia article worth a read if not done so already http://en.wikipedia.org/wiki/Bollard_pull

 

[prv]

Didn't PBO do this with Dylan a year or two ago? Maybe they weren't 10HP engines, but it was around that size.

Pete

 

[VicS]

Didn't PBO do this with Dylan a year or two ago? Maybe they weren't 10HP engines, but it was around that size.

Pete

I think you are right. IIRC one of Dylans videos showed it being done although he did not give the results. You had to buy the comic to get those.

 

[prv]

I think you are right. IIRC one of Dylans videos showed it being done although he did not give the results. You had to buy the comic to get those.

(Seems they were 5HP rather than 10 though.)

Pete

 

[alahol2]

I went through this search and compare process about 15 years ago. At that time the Yamaha was definitely king. I used one on a 32ft catamaran and never felt the need for more power. Brilliant engines.

 

[VicS]

(Seems they were 5HP rather than 10 though.)

Pete

but it shows the highly technical nature of the bollard pull test.