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Forum: Engines & props

02 August 2016, 05:18

Replies: 5

Reducing planing speed

Views: 1,534

Posted By headdamage

Finally got around to trying the 13.5x15 prop...

Finally got around to trying the 13.5x15 prop yesterday, WOT rpm trimmed right up was 5800 rpm. Min planing speed was around 29kph, top speed was 5kph slower than with the 17 pitch.

Forum: Engines & props

06 June 2016, 20:51

Replies: 5

Reducing planing speed

Views: 1,534

Posted By headdamage

Due to the lay out of the boat with a jockey...

Due to the lay out of the boat with a jockey console and very limited floor space there is not much I can do with weight distribution though I would say it is a bit stern heavy at rest.

Forum: Engines & props

06 June 2016, 16:18

Replies: 5

Reducing planing speed

Views: 1,534

Posted By headdamage

Normal load and with moderate trim I'm getting a...

Normal load and with moderate trim I'm getting a WOT rpm of 5000. If I trim it right up to the point of the boat getting very light in the water/bow happy it just reached 5400 rpm. WOT should be a...

Forum: Engines & props

06 June 2016, 03:47

Replies: 5

Reducing planing speed

Views: 1,534

Posted By headdamage

Reducing planing speed

I find that my H440 likes to travel at speeds of 30 kph and up to stay on plane. Displacement speed is around 10 kph and is wet in bad weather but 30 kph is too fast and rough. I've added hydrofoils...

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