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Old 20 October 2014, 06:50   #1
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Suitable motor

Hi I have just purchased an Avon rover 310 which motor? 5,6,8 or 10 HP need to keep the weight as low as practical as will have to carry it as well
Thanks in advance
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Old 20 October 2014, 07:53   #2
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A lot depends on where you intend to use the Avon, river or sea and how many folks will be in the boat?

Also budget is important, if you had close on 1000 for the motor then a mint Tohatsu 9.8 2-stroke around 2006 is the best power/weight balance assuming sea use. A nice mid 2000s 2-stroke Yamaha 8hp is a decent motor too and might be nearer 600. If you are only going on the river a more modest priced 4/5/6hp would be fine.

How far do you carry the motor & do you use transom wheels?
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Old 20 October 2014, 08:46   #3
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Hi I plan to use it around the calshot area Southampton water, Solent & Hamble river, so I have to carry it down the beach or across from the campsite about 100 - 150 metres, I have fitted transom wheels and there will generally be 2 people on board, I was thinking of a yam 4 stroke but very open to suggestions, I didn't think that you could buy new 2 strokes
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Old 20 October 2014, 09:04   #4
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No you can't buy new 2-strokes. The last ones were sold in 2006 but very few folks on here would put a brand new motor on a small used SIB so I assumed used. Most tend to go for the 2-strokes for their lighter weight too.

For your use a 2-stroke 8hp or 9.8hp (Tohatsu only) would seem ideal assuming you are happy to buy used.

They should both allow you to get on the plane with 1 (for certain) or 2 (as long as you aren't both very heavy) and the usual fuel/kit etc. This will be a struggle if you went to 5/6hp.

If you do consider 2-strokes be wary of all the 9.9 models as these weigh the same as 15s which for me is too heavy for the power.

If you are determined to buy a new 4-stroke then look at the weights carefully. In the up to 10hp range most folks find 26kg comfortable but 35kg more than ideal.
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Old 20 October 2014, 09:32   #5
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Thanks for the info, The Mrs would feel happier with a new motor, and as she isn't really wanting to get up on the plane she said to me " just want to Phutt Phutt on the water" this is an exercise to encourage her to allow me to buy a bigger Rib later on, when she is more comfortable, as for me I am off this weekend to do my Level two power boating course (apparently its a 200 Hp Rib
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Old 20 October 2014, 09:49   #6
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What Fenlander said! If you buy new you'll have a weighty little 4 stroke to struggle with and suffer a heck of a lot of depreciation when you sell it (which you will ).
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Old 20 October 2014, 09:55   #7
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I think it's something that I will have to take on the chin as she is unhappy about a second hand engine breaking down, also in my earlier years I used to race two stroke karts and really understand the power advantages, but I can't be faded with mixing oil and fuel etc, plus the best two strokes run on castrol R 😄


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Old 20 October 2014, 10:17   #8
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Suitable motor

Quote:
Originally Posted by inthezone View Post
as she is unhappy about a second hand engine breaking down

That's a shame. There's a mint looking 9.8 Tohatsu on eBay at the moment. Not cheap but should hold its value.

http://pages.ebay.com/link/?nav=item...d=251677319565
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Old 20 October 2014, 10:27   #9
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With the two stroke do you use premixed fuel or is it done within the engine ?
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Old 20 October 2014, 10:49   #10
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I think most, if not all, small 2 strokes use pre-mixed fuel.
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