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Old 19 February 2012, 16:12   #1
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Anyone in south with Tohatsu 9.9hp 2/s?

Hi Guys

I have a 3.2m Honwave with air floor, and an 8hp Tohatsu 2/s - with me and the 6yr old in it, we can pop on the plane really easily... however, add anymore weight then it is a bit more difficult... with two adults and two kids, its very close but can't get on the plane.

I was wondering if anyone near me in Southampton has a 9.8/9.9 Tohatsu which I could borrow/hire for a few hours to see if its worth me upgrading my engine?

Thanks

Ben
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Old 19 February 2012, 16:37   #2
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I take it that you know that the 9.9 is a very different thingumy to the 9.8?
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Old 19 February 2012, 16:59   #3
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Yeah, I am not sure which one to go with.. so thought I would see if either were available
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Old 19 February 2012, 17:10   #4
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Yeah, I am not sure which one to go with.. so thought I would see if either were available
Well, the 9.9 is 41kg, the 9.8 is 26kg. That may help in the decision making process. Of course, the 9.9 has much bigger cc, so probably more torque?

IIRC the 9.9 is a variant of the 18hp, so a 15/18hp might suit you better...
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Old 19 February 2012, 17:34   #5
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As willk says forget the 9.9 - *much* heavier than the 9.8 so you would be much better off with the 15 or even better the elusive hen's teeth that is the 18 - need one myself if you find two!

Weight distribution is really important in these small SIBs' - we have a 3.4m air floor Zodiac and a Twatsuuu 9.8 and 2 small kids - you need to get the weight well forward to plane then back as she gets going. With one adult + 1 kid it's a doddle.
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Old 19 February 2012, 17:41   #6
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Ah, didn't realise the weight difference was so big! So yeah, going to be the 15 or the 9.8 then Don't suppose you know if i can get any more power from the 8hp? I found it hard to find any accurate info on the net about possible conversions
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Old 19 February 2012, 17:45   #7
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the 8 and the 9.8 are the same block - dunno about upgrades.

My 2.7/9.8 combo will easily plane with 30 stone onboard - not sure the 9.8 would do the job you ask. John Kennett will know the answer - he was running a rig and load like that. I think it was marginal...
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Old 19 February 2012, 18:37   #8
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As above we're around 28 stones and the 3.2 with 9.8 is fine. The 15 would be better though...
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Old 19 February 2012, 18:40   #9
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will easily plane with 30 stone onboard
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we're around 28 stones
...are you, um, implying something?
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Old 20 February 2012, 01:52   #10
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Ben, I've got a 9.8 you can borrow if you can't find one nearer. I've got a Yam 15hp 2 stroke you can have a go with too.
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Old 20 February 2012, 03:18   #11
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Welcome to borrow my Mariner 10 any time ..its for sale once I have tried it out .
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Old 20 February 2012, 07:55   #12
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Thanks guys.

John thank you, the 9.8 would be great to try - I will try and sort some transport soon and maybe pop up and give it a blast local to you if thats ok?

Peter - where abouts are you based? How heavy is your 10?
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Old 20 February 2012, 08:01   #13
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Peter - where abouts are you based? How heavy is your 10?
Am in Bournemouth , but am in Fareham on Wednesday morn , southampton lunchtime, and then again one evening in the week .

No idea what it weighs...am sure someone will soon be along who can say what a 99/00 10 hp mariner weighs ...

Pete
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Old 20 February 2012, 12:22   #14
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John thank you, the 9.8 would be great to try - I will try and sort some transport soon and maybe pop up and give it a blast local to you if thats ok?
Sure
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Old 20 February 2012, 13:19   #15
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I have a Zodiac 2.8m SIB (solid floor but with air keel)

With two of us on board it would plane easily with our Mercury 6hp on the back, achieving about 14mph.
Our combined weight is about 20 stone.
Any more weight (one child) and it wouldn't plane.

I just replaced the engine with a Tohatsu 9.8, which is the same weight as the Mercury, 26kg. I'm hoping it will get on the plane with 3 people on board now, but I haven't tested it yet.
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