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Author Topic:   9' hull performance
11 footer posted 02-24-2003 03:41 PM ET (US)   Profile for 11 footer   Send Email to 11 footer  
I''ve been thinking of puting my 1987 8hp mercury on a 9' whaler. Has anyone ever run this boat motor combo? I've ran the 8 on my 11' and it was really weak. Will the 8hp on the whaler9 be ok? What do you guys think?


JBCornwell posted 02-24-2003 04:49 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
It depends to some degree on which 9' you are referring to, 11.

The 9' Squall hull was not the same as the 9' Tender.

I don't think either would be as fast as your 11 with the 8HP. The Squall slowest of all.

I wouldn't call either a planing hull, and I don't think either was rated for over 5HP.

Red sky at night. . .

11 footer posted 02-24-2003 06:10 PM ET (US)     Profile for 11 footer  Send Email to 11 footer     
Right JB, I should have said that. I mean the tender not the squall. I have always though that the tender 9 would be faster with the 8 then my 11 Bigshot has always that the longer the faster to. I'm looking for a smaller hull that I can put my 8hp on. I might have to go with a nonwhaler hull/ I need a smaller less powerfull boat then my 11 for a river I like to go on. Will someone with a tender 9 please post and tell me what they have for power and if it works well with the boat?

Thanks for your help,

captbone posted 02-24-2003 06:15 PM ET (US)     Profile for captbone  Send Email to captbone     
It sounds crazy but I have seen a guy in Lindenhurst, NY with a 9ft tender and an 11 ft whaler with 25hp mercs on each. I have seen both run. He must sit in the front of both of them and use a tiller extension to drive. They both really move but he can only use them in CALM water. The biggest problem is that to plane off the 9fter it takes alot of power to over come the short lenghth and lack of hull. Also, the 11fter sits fine with the 25hp merc but the 9fter must have a water jug filled on the bow. It sits fine but the jug is to stop a large wave or rain from sinking it. IMO I think that an 8hp would be fine.
11 footer posted 02-24-2003 08:54 PM ET (US)     Profile for 11 footer  Send Email to 11 footer     
A 25hp on a 11' is normal. I 25hp on a 9' is crossing the line. Will the 9' plane with the 8hp? I'm not out to race. Only to get on plane.


captbone posted 02-24-2003 09:11 PM ET (US)     Profile for captbone  Send Email to captbone     
If you shift your weight forward and play around with with fuel tank placement then I think it will plane. I have a 8ft thin fiberglass dingy that I put an old 9.8 tohatsu on to play with sometimes. I sit in the middle then hit the juice, the bow come up and I have to stretch forward and lean on the bow and it will plane. Once it is on top it runs great, no porpose but turning is scary. For straight aways it is ALOT of fun. I think that maybe a doel-fin or similar will help alot. Bigshot had a good idea to get those cheat and easy. Overpowering such a small boat and planing it off is ALOT of fun but you have to be smart about it. Since so little hull is in the water it can be un-predictable. I love to tow the dingy to the flats and with just me, my kill switch and the open area, I enjoy it just as much as my bigger boats.

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