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Old 10 February 2004, 00:43   #11
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thank you for your help

first let me thank all of you who have replied with a lot of advice ( some conflicting slightly) but all out of experience i reckon.
lot of info to consider now an yes i believe i may have to compromise on one of my criteria. its not a problem to adapt my watersking to the boat .

WHat about an ex mod avon with a yamaha 85?
is there any known prorblems with them??
what sort of speed will these do WOT??
anyone know what the rough fuel usuage is at WOT?

any more advice is greatly appreciated an my thanks goes out to you.
Your all angels
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Old 10 February 2004, 01:26   #12
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Country: Greece
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Boat name: GATO DI MARE
Make: MAR.CO
Length: 9m +
Engine: Yamaha 200Vmax
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AVONs are good boats.
The X-MOD you refer to must be one of the old 5 mtr models.
If I am not mistaken, with a 75bhp and 19" prop you will be doing about 45-48 knots at WOT with 17" prop about 38-40 knots at WOT but you will have better acceleration and plane quicker.
Consumption from what I can remember (if this is the 2-stroke engine) about 1 and a bit ltr/mile .

PS: Just to correct that I can't remember if it was knots or miles. But the instruments were those made by Quick Silver and they showed the above speed values.
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Old 10 February 2004, 03:40   #13
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Hixxy, the Yamaha 85s are based on the same block as the 90 and have been around longer than Johnny Fuller. Simple in design and have a proven track record both for leasure, commerical and racing. We have one in the dive club. It was used by a former dive school before we got out hands on it. Despite not being servied for a decade with a little TLC she now runs well and is proving a good buy even if she is 15 years old.

But note it will be premix so stike a hard bargin with Atlantic if you go and look at her.

We use 5 - 6 gals an hour with 4 divers and kit cruising at 22 knots.

Merc props will fit with a conversion ring and are half the price of a Yam prop.

The Avon is a great hull too, to only down side is the seat is a little low for some although there is a feeling of sitting in rather than on the boat.

Pete
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Old 10 February 2004, 22:05   #14
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Country: Australia
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I have a Gemini 5.05 deep V hull with an 85 Yam cv 2 stroke on it.

a decent boat BUT I think a bit more power would be useful and a bit more urgency onto the plane would be nice.

also, when I bought, I did so without worrying too much about the seating arrangements and as such - if we go outside the harbour (its a BIG harbour) in any kind of swell I stay fairly dry (gemini jockey console all in one seat) but most pax get wet (low bench seat at the rear of the boat).

I paid $16K AUD = 6K GBP and everything was 1.5 years old and only 20 hours on the engine.

If I was doing it all again, i'd get a 6m rib with a 115 at least with two double jockeys and a seat at the front.

Particularly if I was going to be doing channel crossings...

But thats just me...

HTH
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Old 11 February 2004, 00:58   #15
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Country: Greece
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Edward I use to have a 5mtr Gemini with a 75 Mariner.
When I had a 19" pitch prop the boat was slow on the plane and with some passengers on board it was very slugish.
Changed the prop to 17" and it was accelerating like a rocket whatever the weight on it. Top speed was not compromised much.
Suggest that you explore that avenue
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Old 11 February 2004, 01:51   #16
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Oh God...now we'll be off down the Chandlers again...

Missus

(BTW Ed which channel are you talking about? Yer not headin off to Tazzy are ya?????????)
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Old 11 February 2004, 03:56   #17
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Suprisingly I find myself agreeing with Manos for once Edward that boat should fly with 85 hp on a light 5m hull. If you get the adaptor ring from Mercury you can fit Merc props which are much cheaper than Yamaha.

Pete
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Old 11 February 2004, 15:55   #18
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Quote:
Originally posted by Pete7
Suprisingly I find myself agreeing with Manos for once Pete
I'm honoured!!
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Old 11 February 2004, 21:29   #19
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many thanks guys... that is something I shall look into forthwith while there is still some summer left... Manos - that is EXACTLY the symptoms, fine when i am solo or two up, but with 4 or 6 on, its very sluggish. We don't do much top speed work tbh so I shall give it a go.

I have been wondering what else to spend some money on for a while so looks like a new prop may be the option and i'll certainly see if an adaptor ring is possible.

i'll let you know how it goes...

Missus - i'll not be taking on the Bass Strait in a 5m boat thats for sure... no, i was just dreaming of blighty...
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Old 12 February 2004, 01:12   #20
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Country: Greece
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Good luck Edward
I'm sure a new 17' pitch prop will work fine on the boat
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