Forum: Engines & props
28 April 2015, 04:12
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Replies: 39
Views: 7,858
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Forum: Engines & props
27 April 2015, 01:30
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Replies: 39
Views: 7,858
I am over propped if i want max hp from the...
I am over propped if i want max hp from the engine. Four reasons for the prop choice: 1) I enjoy the peace and relaxed pace of 800 rpm and 4 knots for daily commute(evening)
2) 180ml / km fuel...
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Forum: Engines & props
26 April 2015, 14:27
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Replies: 39
Views: 7,858
The lifting (planing surfaces) on the hull are...
The lifting (planing surfaces) on the hull are very inefficient, approx 5 : 1 lift to drag ratio. The lift to drag ratio on a foil at 3-4 degrees ( I think) can be as good as 25 : 1 (including the...
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Forum: Engines & props
25 April 2015, 15:26
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Replies: 39
Views: 7,858
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Forum: Engines & props
25 April 2015, 09:35
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Replies: 39
Views: 7,858
Oh! My 2nd boat happens to be a 268 vista. Has...
Oh! My 2nd boat happens to be a 268 vista. Has the Volvo duoprop. The Volvo petrol engine was damaged because the shipper didn't drain it properly. So bought the VW 2 liter CR TDI mapped to 180hp....
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Forum: Engines & props
25 April 2015, 02:33
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Replies: 39
Views: 7,858
She runs faster with less load. Even one person...
She runs faster with less load. Even one person less (40kg,wife) and will do 22 knots easily and this is with a 25 inch pitch prop and wot 2700 rpm. I try to reduce fuel pressure to compensate for...
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Forum: Engines & props
24 April 2015, 01:53
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Replies: 39
Views: 7,858
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Forum: Engines & props
20 April 2015, 04:53
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Replies: 39
Views: 7,858
Planing Angle and Trim
How to find the level of the planing surfaces on the hull and how to then set the outboard level (or at 90 degrees to level) ?
Planing angle ideal is ? 3-4 degrees up?
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Forum: Inflatable boats - SIBs and folding RIBs
10 April 2015, 03:48
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Replies: 6
Views: 4,474
Try hullkote. (Mclube) It lasts about a month....
Try hullkote. (Mclube) It lasts about a month. Very slippery and as long as you use the boat every other day the green slime will never take hold.
Foul release is becoming more and more popular...
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Forum: Engines & props
09 April 2015, 07:46
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Replies: 10
Views: 2,389
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Forum: Engines & props
09 April 2015, 05:13
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Replies: 10
Views: 2,389
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Forum: Engines & props
09 April 2015, 05:09
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Replies: 10
Views: 2,389
Yes correct plugs direct from Yamaha in their...
Yes correct plugs direct from Yamaha in their packaging.
Going to do a test tonight; reducing the fuel pressure. Will lower pressure with a T just before the fuel rail. Will actually put two Ts...
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Forum: Engines & props
08 April 2015, 11:05
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Replies: 10
Views: 2,389
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Forum: Engines & props
08 April 2015, 11:04
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Replies: 10
Views: 2,389
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Forum: Engines & props
08 April 2015, 10:59
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Replies: 10
Views: 2,389
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Forum: Engines & props
08 April 2015, 09:49
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Replies: 10
Views: 2,389
Hi Nos4r2,
Thanks very much for your...
Hi Nos4r2,
Thanks very much for your reply and posting. Forgot to mention that; did it 140+ on all cylinders. The crankcase pipe from the valve cover does give off a bit of vapour at high rpm...
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Forum: Engines & props
08 April 2015, 09:17
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Replies: 10
Views: 2,389
Poor MPG Yamaha FT60
Hi,
I am having trouble with my Yamaha FT60. Its a 2008 with 2500 hrs. Smelly exhaust, soot on the plugs and prop inner hub. Had the injectors cleaned. they were leaking before. New plugs still...
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Forum: Engines & props
18 February 2015, 05:24
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Replies: 15
Views: 5,442
Very Good numbers Peter!
There is hope and...
Very Good numbers Peter!
There is hope and perhaps credibility to the 14mpg(US) claim. I have the Yam 60 with EFI. Hope to be doing sea trials next week. My Gemini 550 might be a shade heavier at...
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Forum: Engines & props
17 February 2015, 00:29
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Replies: 15
Views: 5,442
The link of the "guy" was : Rigid Inflatable...
The link of the "guy" was : Rigid Inflatable Boats (RIB) - Real World Experience | eBay (https://www.ebay.com/gds/Rigid-Inflatable-Boats-RIB-Real-World-Experience-/10000000007177804/g.html). To be...
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Forum: Engines & props
17 February 2015, 00:23
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Replies: 15
Views: 5,442
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Forum: Engines & props
16 February 2015, 10:34
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Replies: 15
Views: 5,442
Hi John,
I read about a guy that got (or so...
Hi John,
I read about a guy that got (or so he claimed) 14 miles per US gallon at 28mph in a Nautica 16 and a 45hp 4 stoke Honda. I think if my math is right 14mpg is 0.174 liters per kilometer. ...
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