help me choose a dink motor
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- RWS
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help me choose a dink motor
RIP 1976 Mercury 9.8 110 Series at 65 lbs
She starts consistently on the second pull, but is simply not worth putting any serious money into a lower unit on a 1976 Merc
Speed is fun on our 10.5' hard air floor dink with inflatable keel.
We use a St Croix mini crane to safely load the dink engine from the lazarette to the dink.
So, Yamaha 2 stroke 8 HP at 60 lbs
or
Yamaha 2 stroke 9.9 HP at 80 lbs
(I can change the reed valve plate on the 9.9 to get 15 horse....
But an 80 lb dinghy engine.........
even with the mini crane, seems like a lot of weight to heft around.
Your comments are appreciated!
RWS
She starts consistently on the second pull, but is simply not worth putting any serious money into a lower unit on a 1976 Merc
Speed is fun on our 10.5' hard air floor dink with inflatable keel.
We use a St Croix mini crane to safely load the dink engine from the lazarette to the dink.
So, Yamaha 2 stroke 8 HP at 60 lbs
or
Yamaha 2 stroke 9.9 HP at 80 lbs
(I can change the reed valve plate on the 9.9 to get 15 horse....
But an 80 lb dinghy engine.........
even with the mini crane, seems like a lot of weight to heft around.
Your comments are appreciated!
RWS
1983 10 Meter SOLD after 21 years of adventures
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- prowlersfish
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That is a tough choice . I have a 8.0 @56 lbs and a 9.9 @86 both nissans I also have crane to lift it . But you still have to man hadle them some what . And the 8.0 is much easier to work with . however its just slighty underpowered for my needs . the 9.9 has plenty of power more then I need and even more when I changed it to 15hp with a kit .
Thats why I have both . what I really want is a nissan 9.8 (56 lbs )
What I would do in your case is beg, borrow( not steel a 8.0 hp and try it to see if it will meet what your needs/whants are with your inflatable fully loaded as you use it . only you can make that judgement not me or any one else .
Thats why I have both . what I really want is a nissan 9.8 (56 lbs )
What I would do in your case is beg, borrow( not steel a 8.0 hp and try it to see if it will meet what your needs/whants are with your inflatable fully loaded as you use it . only you can make that judgement not me or any one else .
Boating is good for the soul
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Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
- RWS
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The St Croix mini crane makes it easier to heft over the transom and onto the dink, but 20 lbs of bulk is still 20 lbs of bulk.
If I knew for sure I could pull a tow toy on plane with the 15 I would do so, however we were unable to do that with the Merc built to 12 HP.
So is it 8HP on the dink at 60 lbs, or an extra 2 HP (or 7 if I do the rnew reed valve plate) with an extra 20 lbs hanging off that transom?
Will I cuss the 80 lbs or cuss the 8 HP ?
RWS
If I knew for sure I could pull a tow toy on plane with the 15 I would do so, however we were unable to do that with the Merc built to 12 HP.
So is it 8HP on the dink at 60 lbs, or an extra 2 HP (or 7 if I do the rnew reed valve plate) with an extra 20 lbs hanging off that transom?
Will I cuss the 80 lbs or cuss the 8 HP ?
RWS
1983 10 Meter SOLD after 21 years of adventures
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
What is the HP rating on the dink? I would look for something close to that. I bought a 15hp rude, I was originally looking for a 9.9 until I found out they weight the same. Probably more HP than I need but you don't have to use it all.......right?......... John
1972 Trojan Sea Raider F30 - FI 350's "Time Warp"
1998 Kawasaki ZXi 1100
1972 Chevy Fleetside Shortbed hotrod.......450hp
10.5 Newport Inflatable w/15hp Rude
1998 Kawasaki ZXi 1100
1972 Chevy Fleetside Shortbed hotrod.......450hp
10.5 Newport Inflatable w/15hp Rude
- RWS
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The dink is rated for 10 HP
That said, I am not an irresposnible operator and the actual 9.9 Yamaha would maintain the same cowling - a sleeper if you will.
As far as the power is concerned - the answer is easy
The real question is do I really want 80 pounds hanging off the back of the dink and do I really want to have to deal with alll that heft..... even with the mini crane I still have to man handle it into and out ofd the lazarette plus handling it on the mini crane.......
RWS
That said, I am not an irresposnible operator and the actual 9.9 Yamaha would maintain the same cowling - a sleeper if you will.
As far as the power is concerned - the answer is easy
The real question is do I really want 80 pounds hanging off the back of the dink and do I really want to have to deal with alll that heft..... even with the mini crane I still have to man handle it into and out ofd the lazarette plus handling it on the mini crane.......
RWS
1983 10 Meter SOLD after 21 years of adventures
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
- prowlersfish
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I do find the 86 lbs of my bigger eng a real pain for me even with the Crane . most the time I use my 8 hp . Now if I going to somewhere where I will be a few days and use the dink I will take the larger engine . but its not worth it for just weekend IMO .
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
- RWS
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Must be 2 stroke. - period.
If I stay with the Yamaha - which is now my preference, it's either the
8 HP at 60 LBS
or the
9.9 HP at 80 LBS
The price is essentially the same
The Merc was 64 lbs
'Course ten years from now when I am an even older fart, I'll be wishing I had a 2 HP Honda air cooled motor !!!
RWS
If I stay with the Yamaha - which is now my preference, it's either the
8 HP at 60 LBS
or the
9.9 HP at 80 LBS
The price is essentially the same
The Merc was 64 lbs
'Course ten years from now when I am an even older fart, I'll be wishing I had a 2 HP Honda air cooled motor !!!
RWS
1983 10 Meter SOLD after 21 years of adventures
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
- vabeach1234
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Something to consider:
Pre 1986 outboards were rated at the powerhead.
Post 1986 they started rating them at the prop.
You lose some power from the powerhead to the prop, so your old 1976 9.8HP might have been closer to a current year 8 HP.
Pre 1986 outboards were rated at the powerhead.
Post 1986 they started rating them at the prop.
You lose some power from the powerhead to the prop, so your old 1976 9.8HP might have been closer to a current year 8 HP.
Ken
1972 Trojan F26 Express
1985 Dell Quay Dory 13
Hampton, VA
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1972 Trojan F26 Express
1985 Dell Quay Dory 13
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- prowlersfish
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Good point . Gut feeling is that the 8 hp yamaha will do the jobvabeach1234 wrote:Something to consider:
Pre 1986 outboards were rated at the powerhead.
Post 1986 they started rating them at the prop.
You lose some power from the powerhead to the prop, so your old 1976 9.8HP might have been closer to a current year 8 HP.
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
- RWS
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- Joined: Sat Feb 18, 2006 7:01 am
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=============================================prowlersfish wrote:Good point . Gut feeling is that the 8 hp yamaha will do the jobvabeach1234 wrote:Something to consider:
Pre 1986 outboards were rated at the powerhead.
Post 1986 they started rating them at the prop.
You lose some power from the powerhead to the prop, so your old 1976 9.8HP might have been closer to a current year 8 HP.
This would apply if my 9.8 Merc was 9.8
However it was built by a retired Merc instructor with jets and reed valves to 12 HP
Also, electronic ignition
So maybe these two will be equal?
12 at the head (Merc) vs 9.9 at the prop (Yamaha)
RWS
1983 10 Meter SOLD after 21 years of adventures
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
- prowlersfish
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- RWS
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On closer inspection the two 8 HP Yamahas are in far better shape than the 9.9
These videos helped me get back to the 8 HP
http://www.youtube.com/watch?v=AlLFjNFixyQ
http://www.youtube.com/watch?v=XQ_6LX63dkU
http://www.youtube.com/watch?v=Zjhc4T7kExw
the last one shows 17 MPH with 2 people on board
the 8 is soiunding better and better now.
RWS
These videos helped me get back to the 8 HP
http://www.youtube.com/watch?v=AlLFjNFixyQ
http://www.youtube.com/watch?v=XQ_6LX63dkU
http://www.youtube.com/watch?v=Zjhc4T7kExw
the last one shows 17 MPH with 2 people on board
the 8 is soiunding better and better now.
RWS
1983 10 Meter SOLD after 21 years of adventures
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED