petrol v deisel. facts

Re: I wonder?

Two of my points there Brendan one, your probably not with the wife at the time, two only sustained for short periods, for whatever reason.

Nice to know the powers there.

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Re: I wonder?

Well your point there about maintaining whereabouts at such speed if very valid, now duncan on the other post reckons he used to do 48kts, if conditions permitted for approx 9miles from Gillingham to the estuaary on the Medway.

Now I've been down there many times at my Crowns semi-dis speed, and I reckon anyone doing such sustained speeds there would.... a) upset a lot of people in other boats, and..... b) it would be a little reckless given that BIG ships, slow to manouver, use the Medway also. Also its pretty bendy so keeping tabs of the buoys woukd be a task.



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What better way to preach to those wayward petrol heads than to continue my mission of petrol/diesel conversions, and allow more small oil burners to be available on the low budget used market!

(Actually I have answered the question before, and the sales whim came from a chance offer to acquire a Princess 33 on very favourable terms from a friend who was going to work in S Africa for at least 3 years. This all happended a couple of months ago, and I would have needed to close a deal before the new year to secure the P33. Trouble is you know what it's like once your appetite is wetted by a serious consideration of an upgrade! I'm more than happy to go through 2004, and perhaps even 2005 with the B27 before I would make a determined effort to sell and upgrade, but once on the market, it may as well stay nominally 'for sale', and should I get a good offer in the meantime I'll enjoy looking out for some very cheap 30 footer with ugly old petrols ripe for conversion!)

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Thanks for the tip David. I've spotted an ideal candidate already!

1990 Wellcraft 3300 St. Tropez

33 Feet

Single Mercruiser 7.4 Bluewater 1990 561 hours
Gen : Westerbeke 3 Cylinder 1990 321 hours.
LOCATION OF BOAT
Florida National Liquidators
MINIMUM BID STATUS
$28,750 New
GENERAL CONDITION
A nice clean boat in decent condition, but in need of some updating. The generator is inoperable...

OPTIONS
This boat feautres a full Bimini Top and the cockpit is equipped with a refreshment center with fridge and sink. The helm is equipped with VHF, Impulse Depth Sounder, search light controls and trim tabs. the cabin is very spacious with plenty of head room. The interior does need to be updated. The galley features a fridge, sink, coffee maker and microwave. There is an enclosed head and V-Berth Sleeping compartment.



.......Just the one big old very rusty petrol lump, seems an ideal candidate to try a new D6 or big Yanmar!

Shouldn't cost much more than £20K to buy and deliver, £20K to repower and upgrade. Mmmmmm perhaps the P33 was a much better bet after all at only £30K !!!!!!


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At $28,500 that's the opening bid price. I know people who have bid and ended up getting them for considerably less than bid price. Also NB that after 1998 you need to consider EU marking implications! Anyway, its refocussed your ideas as to value of Pe33 /forums/images/icons/wink.gif

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Re: I wonder?

I go down there all the time at 40 ish knots, I don't need the bouys as I know it off by heart now, there is stacks of room and no need to get in the way of anyone. My little 176C chartplotter easily copes with any bad weather that may come in, although I would then reduce my speed accordingly and get the porta potti ready /forums/images/icons/laugh.gif

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Re: I wonder?

Now, don't start misinterpreting me. I said LONG blasts.

I don't have a wife, so that would be tricky one. I've certainly had several girlfriends who've been on board when I've been at 40+knts for extended periods.


Came back from Christchurch the other day at 44knts - all the way to Lymington.Been all the way round south of Isle of WIght at 40knts. That's equivalent of half way to france. loads more.but you shouldn't run engines like that for extended periods. I think it's not more than 1 hour in 20

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Re: I wonder?

Nope, definitely not a hovercraft. No skirt

<hr width=100% size=1> I asked an economist for her phone number....and she gave me an estimate
 
Re: Ah but -

(1) As a fisherman I was running out on the best of the water with few other craft around
(2) What turns? Even at that speed it's pretty much a straight line. I did struggle to hold 30knots on the trip upstream to Allington Lock though because of the turns /forums/images/icons/smile.gif
(3) It's so flat you can see a commercial from a few miles
(4) I thought you referred to the Medway estuary - that ceases at Sheerness. It's then the Thames estuary and I agree that that was rarely smooth enough for those speeds.

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Re: I wonder?

and there is the cost... to be up at 40knts plus or so is going to be using a hell of alot of petrol. Its not totally accurate but a good benchmark is the last 10pct of speed I cruise 30-35knts most of the time as long as the sea conditions dont mean you re airborne more than seaborne,, but only do 40-45knts for shorter periods because, yes, for my tastes the ride ,and control, can sytart to deteriorate in the sea is getting lumpy.

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Honesty please!

I would like to know honestly how many people would stick with or bother to convert to diesel if the fuel price was exactly the same, and fuel availability was the same. OK cruising range would be a bit more with diesel, but would you still want the smell of diesel and that slow chugging about, compared to the crisp clean quiet zippy petrol /forums/images/icons/wink.gif You see that would make us a bit more like the USA, I sense a long silence coming on /forums/images/icons/wink.gif

<font color=purple> "You only see what you recognise, and you only recognise what you know" <font color=purple>
 
Re: Honesty please!

I don't go "slow chugging about" with my twin 380hp turbo diesels.

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Re: Honesty please!

What about the question though, and could you get better performance than you do already /forums/images/icons/wink.gif

<hr width=100% size=1><font color=purple> "You only see what you recognise, and you only recognise what you know" <font color=purple>
 
Re: Honesty please!

Funny how many 'small' boaters forget that once you get into the 30 foot, 5 ton plus bracket, petrols become increasingly useless trying to get your boat on the plane, and totally pointless if it's not a planing hull.

How many 30 ton artics do you see with big petrol lumps?

All this torque is not comparing apples with apples..............




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Re: Honesty please!

Yes, as an ex petrol motor boater I would stick with diesel.

Diesels will keep on running in conditions where a petrol engine would die.

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Re: Honesty please!

You really are starting to flog a dead horse here Pete! I've just converted as you know - it's not just a marginal increase in range it's nearly double! I used to use around a gallon per nautical mile on petrol now I'm using 0.26 of a gallon!
I've lost nothing in terms of speed and the boat handles far better now than it did with the V8 in it. There are several forum members who have been out on Solitaire recently who will vouch that she is no sluggered. I'll also add that the diesel actually makes less noise than the V8 did. I can run at full throtle with far less worry than on petrol - mainly 'cuase its governed to 3,400 RPM.

Oh and a few other minor details - it starts first time every time, I've no electrcs to get wet and corrode, and diesel is, at the end of the day, far less volatile.

Would I do it again? You bet your sweet a"*e I would. Even if the fuel price was the same. As to such things as smell of diesel, can't vouch for other engines but the Yamaha does not belch smoke and there is very little odour.

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