1966 johnson 9.5hp top speed

[himey58]

I have a 1966 johnson 9.5 hp. I was wondering what the approximate top speed would be. I have it mounted on a 1966 12ft 50" beam v-bottom aluminum boat. Loaded with fishing equipment and two(2) adults, it weighs around 700-800 lbs. According to my gps, it says we are moving along 6.3 - 6.9 mph. Does this sound close to where it should be as far as speed? Thank you

 

[Boss Hawg]

Re: 1966 johnson 9.5hp top speed

I'd say yes

 

[Tom_C]

Re: 1966 johnson 9.5hp top speed

I have a 73 9.5 on my 38" wide Gheenoe fully loaded with 2 people it weighs arounds 500.
I get between 16 - 18

 

[Nobody]

Re: 1966 johnson 9.5hp top speed

I'm thinking 6.9mph is a tad slow, my setup is pretty close in weight and although I've haven't had it outside the harbor with the GPS yet it has no problem doing the 5mph harbor speed.

Here is a 9.5 pushing a 14ft tin boat with 2 and 3 people and varying surface conditions.

http://www.youtube.com/watch?v=UiGRzqpYOFg

Same boat, same motor with 3 people but only running on one cylinder.

http://www.youtube.com/watch?v=6pl3whfPtSo

 

[McGR]

Re: 1966 johnson 9.5hp top speed

Should go faster.

 

[billy4hp]

Re: 1966 johnson 9.5hp top speed

I had a 72 Johnson 9 1/2 as a kicker on my 16ft fiberglass deep V boat, weighed over 1400 lb with people, gear and main engine... I could easily achieve 8 mph plus on my GPS @ WOT on the kicker...

 

[himey58]

Re: 1966 johnson 9.5hp top speed

I just want to say Thank you to all who posted replies. Sounds as though the general consensus is that I may need to do some tuning. Thank you all again. Jim