Moderated Discussion Areas
ContinuousWave: Whaler Performance
9-Foot Tender Power
|Author||Topic: 9-Foot Tender Power|
posted 05-28-2004 12:07 PM ET (US)
[I] just bought a 9-foot Tender with a steering station [that is] rated for a 5-HP [engine]--seems light. [Seeks replies from readers who have] experience with more [than 5-HP] on [a Boston Whaler 9-foot Tender]. [I] trying to figure out what [engine] to buy [for use on a Boston Whaler 9-foot Tender].
posted 05-28-2004 02:44 PM ET (US)
I've seen them with 9.9-HP engines.
posted 06-01-2004 01:23 PM ET (US)
I would do a 9.9.
posted 06-01-2004 02:18 PM ET (US)
[Is use of a 9.9-HP enigne on a Boston Whaler 9-foot Tender] not too much?
posted 06-02-2004 01:20 PM ET (US)
I have seen a few with 15's and one with a 25 or 35hp...no BS. 8 to 9.9 is necessary if you want to plane, any less and she won't unless driven by someone who weighs the same as the Geico gecco.
posted 06-02-2004 03:13 PM ET (US)
A friend of mine used to have same boat with 9.5 on it. Worked great, we buzzed around in it all the time.
posted 05-11-2005 10:03 PM ET (US)
Spark, What did you end up with? I am in the same situation...
posted 05-17-2005 07:53 PM ET (US)
A buddy of mine let me try out his 9' whaler alone. Got it barely on a plane while slightly leaning foward ( I weigh 150) and the wind behind me. They are definetely a sweet little boat. It was 4hp Mariner. Internal gas tank(in motor), an anchor, and an oar was the load. If you go low power, try getting behind a bigger boats wake to give the boat that extra heave to plane (of coarse I only did this when only a few boats around were preseent for saftey reasons.) Good Luck with your 9' BW.
posted 05-23-2005 10:23 PM ET (US)
Will twin 5's fit? 8>)
posted 05-24-2005 11:04 AM ET (US)
I came across a cheap used 9' and gave it to the 11 year old son of a friend. Together we built a dashboard console (kind of like a very small Mischief) for a speed boat look. His father had a nice 25 HP Mercury, remote controls and all, which we put on. Initially, I was concerned it would be grossly overpowered. In a sense, it is, because it's a rare day on the Severn that you can go full speed comfortably. On the other hand, the hull is clearly strong enough and the boat doesn't feel any less safe than a 13'. The 11 year old loves it, but honestly, a grown adult is going to feel a little silly doing anything other than commuting from a dock to a mooring in a 9', which a 5 HP will accomplish just fine.
posted 05-25-2005 09:36 PM ET (US)
I would like to see you try an Optimax 115. But first, set up a video camera for us so we can see your maiden voyage....LOL
posted 05-25-2005 09:40 PM ET (US)
10 foot jetskis have 215 hp. I think a 9.9 would work on your rig. Twin 5's on a whaler drive would work too.
posted 06-03-2005 04:32 PM ET (US)
Ended up with a 15 merc. It works great. Alot of fun to mess around with.
posted 06-04-2005 01:12 AM ET (US)
Kevin, can you share some performance data with us?
posted 06-04-2005 11:56 PM ET (US)
I've run an 8' Clown boat with a 9.5Hp engine. A 9' Whaler should be fine with 10Hp... (This particular Clown boat was just like those used at Cypress Gardens and SeaWorld where they run 25Hp Merc's on them...)
posted 06-07-2005 08:52 AM ET (US)
15 2 stroke merc. Planes nicely, fast!!
posted 08-10-2005 06:52 PM ET (US)
Where 2 was talking about a Cypress Gardens Clown Boat. Does anyone have any information about these? I used to own one and would like to again.
posted 08-12-2005 05:42 PM ET (US)
See the post by riverrat321 called Decisions... some folks are putting 50HP on 11 footers so there you go! You might attach some side wings to your 9' and mount a 40hp, could be a lot of fun (if you live through it)
posted 12-14-2009 07:40 AM ET (US)
[Revived this discussion after it was dormant for four years to say;]
I have 6 hp on my [Boston Whaler 9-foot Tender] and it moves okay. [The boat cannot] get on plane. I bought a 15-HP disguised as a 9.9-HP. [I] hope to try it out this spring. A 5-HP is clearly not enough for these little boats.
posted 12-15-2009 12:21 PM ET (US)
I had a 9' with a 8 hp yamaha 2 stroke, could not get(stop it) the boat from porpoising. Felt it was to unsafe for my kids. Traded it for an 11' and put a 25 yamaha 2 stroke on it. World of difference and much more stable. After having the 9 foot I can not see putting more than a 6 hp and only using it to go from shore to a boat moored in the harbor or on a small lake. The 9ft whaler boat is just to unstable...Take care
posted 12-20-2009 10:20 AM ET (US)
I have a 15 hp Yamaha 2 stroke on my 9 footer. I added smart tabs on the transom and dual fins to the motor. It is very stable, fast (27 mph) and fun for one person.
posted 12-22-2009 12:04 AM ET (US)
I'm going to put a 40 on mine just to see what it does....just kidding! There was a guy who had a 35 on one with the console mounted on the front deck...I think that is a bit overkill but would be fun. I actually sold mine before using it, I had a 8hp to try along with a 9.9 and a 15, could have been interesting. I will let you know how the the 11 with a 20hp does.
posted 12-24-2009 02:49 AM ET (US)
The "Clown" boats were called "Flivers". I've seen them for sale on the internet over the years. I had one with a 2 stroke Johnson 35 and it was a blast!!!!Maybe someone has a mold???
posted 12-26-2009 07:55 AM ET (US)
We run our 9' Whaler with a 15 hp Suzuki 2 stroke. With a 185 lb driver, anchor, oars, etc, and full 6 gals gas, it runs 23 knots WOT (GPS). Planes with 2, or 3 if they're not too big. Porpoising was awful, but fixed with a fin on the motor.
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