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Old 23 October 2003, 19:34   #21
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Quote:
Originally posted by Richard B
Uh Oh! I've upset the Optimax evangelist...
You haven't upset me Richard, I just don't really think your advice was an objective opinion!

To be honest I don't really care what engines people buy or use as long as I am happy with the ones I use on my boats. Which I will be once I get rid of the 4 stroke.

The fact is that modern 2 strokes represent rather good value for money and the running costs are resonable.
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Old 24 October 2003, 02:03   #22
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Background on Opti technology... have a look here:
http://www.orbeng.com.au/orbital/cus...s/custApps.htm
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Old 24 October 2003, 03:19   #23
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Quote:
Originally posted by thewavehumper
...modern 2 strokes represent rather good value for money ...
That's the bit I don't (fully) agree with, Stu.

Look at Ribcraft's package pricing sheet...
Cheapest purchase price for 5.85 + 130-140hp motor is the Suzuki DF140 at 17, 041. You can pay an extra 954 for the Mariner 135opti if you choose, for the privilege of carrying around an extra 9kg on the transom and having to pop to the chandlers every weekend for a bottle of Optimax oil (or buy a bloody great barrel of the stuff ) and pouring the stuff into a little reservoir (or all over your hands like I do!)

OK there are advantages - yes, a super engine, great acceleration, service centres everywhere (that's one to think about - where will you use for service?) And proven reliability. But in terms of running costs, how are you going to get that 954 back, especially when you're forking out for 2-stroke oil? And I would always know that I'd paid for a 175hp engine with a restricted chip. Annoying or what!?!

Now have another look at the Ribcraft packages... and don't read this whilst you're eating Stuart, as you'll probably choke on your cornflakes, but their Honda 130 package is just 383 more than the Suzuki and includes a 5-year leisure warranty. Lets get the negatives out of the way - it's an Accord 2.2litre car engine on a Mercury leg(?), and referred to by many as the most boring outboard engine in the world. A bit heavy as well, and these engines had their reputation tarnished in the RIB world by being mounted on a 2-tonne mobile scaffolding rig commonly known as the Camel Trophy RIB. But a 5-year warranty is gold-dust in marine gear! And what's more boring than a RIB laid up with a blown engine waiting for a rebuild - I think that the Honda owner would have more fun in that scenario. At least he'd get back out on the water without having to re-mortgage the wife!

When all said, it's a question of what you want. If excitement and adrenaline rush are your thing, then the Opti (or another good efi 2-stroke) would almost definitely be the choice, but then I don't reckon that the Ribcraft 5.85 would be the boat to match. Mind you, you'll get 40kts+ I guess... If you want low cost running and servicing then it's got to be the Honda, although I reckon that the Suzuki engine is probably the better piece of engineering out of those two.
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Old 24 October 2003, 03:26   #24
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Suppose i agree with most of that Richard. On a technical note

Quote:
Originally posted by Richard B
then the Opti (or another good efi 2-stroke)
Efi 2-strokes are not what you need. Dfi are (opti / hpdi / ficht). An Efi engine is a fuel injected replacment for a carb engine = large fuel bill.

I reckon the 2s v. 4s battle will be almost as eternal as the diesel vs. outboard one - and it will depend upon what sort of boating you want. For most of us we are doing it for fun, so speed, noise, acceleration are important. If you've chosen the outboard route then i'm still not convinced that thrill factor exsists so much with a 4s.
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Old 24 October 2003, 03:35   #25
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Quote:
Originally posted by Daniel
Dfi are (opti / hpdi / ficht).
Oops! Wrong terminology. Thx Daniel.
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Old 25 October 2003, 07:59   #26
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Quote:
Originally posted by thewavehumper
You haven't upset me Richard,
Glad to see you're not going to raise your blood pressure, Humper, but I'd have thought that an old sea dog like yourself would have more sense than to get into a technical debate with someone who seems to know the cost of everything but the value of nothing. (? Accountant)

In the immortal words of old Fuller 'You're a tw*t'. A one legged one at that.

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Old 25 October 2003, 14:39   #27
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What's wrong with Richard's leg?
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Old 26 October 2003, 01:16   #28
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Hey!!!
No insulting one of the nicest people on Ribnet!!!

You men are just obsessed with the size of your engines....from a woman's perspective it doesn't matter what size they are so long as they work...

Guess you're all getting stir crazy now the winter's setting in.

The missus
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Old 26 October 2003, 02:36   #29
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Thank you for yopur Kindness Kayhleen, but I can take the odd insult. David Manning is from the North and they all talk like that.

They call a spade a spade where as we tend to call it an Earth moving Instrument. It's propably cos it's so cold up there as opposed to the Lovely sunny weather we have down here
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Old 26 October 2003, 19:28   #30
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Quote:
Originally posted by thewavehumper
What's wrong with Richard's leg?
No, your leg you silly Welsh Sod
Remember, that appendage that used to function just like the other one before you tried to join the Red Arrows, except you were using a blue Scorpion, not a red&white jet plane?

Anyway, as I sit here finishing off Whiteshoes' beer (What was that about not having to be posh to...?!?), I'm doing some quick maths. And I'm not an accountant DM. You wish I was - It would be like the Carlsberg advert... "You want how much to start a business...? - that's fine, have a bit more and pay it back when you can. And take my secretary home for a jolly good..."

Back on the subject, trip to Alderney and back was 180miles total, minus 25 miles to the fuel berth gives 155miles. I've just filled up and it was 177 litres. So 1.14 litres per nautical mile. And that's giving it some serious wellie. Well, as much as I dared anyway. Add the 2-stroke oil, which was roughly 6 litres (over the total 180 miles) so a litre of oil seems to do about 30 nautical miles. Yam 200hpdi of course, so completely irrelevant to Opti v 4-s debate, but a "starter of ten"

So come on down you 4-stroke boys, how does that compare?

Wave, how does your Honda compare to your Opti? (nice acceleration BTW - nearly lost my hat!)
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