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Forum: Engines & props 18 May 2008, 05:40
Replies: 17
Views: 4,508
Posted By Richard Selman
5400 - 5500 Richard

5400 - 5500

Richard
Forum: Engines & props 17 May 2008, 15:52
Replies: 17
Views: 4,508
Posted By Richard Selman
Search over

With the Pro Series 23 on I am up to 46.7 knots. This is more like it.

Richard
Forum: Engines & props 11 May 2008, 12:49
Replies: 17
Views: 4,508
Posted By Richard Selman
Yamaha have just agreed to lend me a Pro Series...

Yamaha have just agreed to lend me a Pro Series 23 prop to test (D = 14.5"). Should get it for next weekend.

Richard
Forum: Engines & props 05 May 2008, 06:08
Replies: 17
Views: 4,508
Posted By Richard Selman
Thanks for that Robbie. The anti-ventilation...

Thanks for that Robbie. The anti-ventilation plate is about 30 mm above the base of the transom. The vipermax has a big planing pad and therefore the engine must be sitting higher relative to the...
Forum: Engines & props 03 May 2008, 19:58
Replies: 17
Views: 4,508
Posted By Richard Selman
Display say 3.9 Nm/uk gallon I think. Not...

Display say 3.9 Nm/uk gallon I think. Not confirmed this yet by any other measurements. I have a petrol station at the bottom of my drive. I just pause as I pass by and Sandy fills it up - it just...
Forum: Engines & props 03 May 2008, 19:10
Replies: 17
Views: 4,508
Posted By Richard Selman
Doug thanks for that. So best prop was 23"P x 14...

Doug thanks for that. So best prop was 23"P x 14 1/2" D - bigger diameter than mine hopefully confirming what I think is wrong. Might take a punt on that. I see that Yamaha also do the performance...
Forum: Engines & props 03 May 2008, 10:14
Replies: 17
Views: 4,508
Posted By Richard Selman
pm sent.

pm sent.
Forum: Engines & props 03 May 2008, 07:12
Replies: 17
Views: 4,508
Posted By Richard Selman
Who else is running a single Yamaha F250?

What prop are you running and what performance are you achieving?

The 2:1 gearbox is turning the prop a bit slower than other similar engines and its making it difficult to get the prop selection...
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