lambay to howth

[twinkle]

just a quick question does any one know what distance is lambay from howth harbour i went over in the boat and back and used a tank of juice [20litres] just want to work out the consumption of the engine thanks

[Paul B]

Derek,

Depending on what part of the Island you went to ?? From the harbour in Howth to the south side of Lambay is 7 miles !!

[twinkle]

thanks paul it was the south of the island we went to thats not bad 14 miles at full trottle 20 litres im happy with that

[MAC]

were ye flat out or cruising? Always makes a big difference.

Last year on the first day of the Cork small boats I managed 70km on about 35 litres. I was mostly cruising at about 18 knots.

Kev

[JimC]

Howth to Lambay on the chart below is 6nm.

20ltrs for 12nm even 14nm is quite a thirsty beast! - around .7nm Ltr. What engine is it?

Kevs would be approx 38nm for 35ltr - .92nm per litre - thats on a 60 being driven like a knickers!

I would expect around .8 - .9nm per litre - 100hp - mixed driving

[twinkle]

shes a 40hp yamaha and that was flat out i was quite pleased with that as thats the furtest iv gone since i got the boat
she still needs some more ballast at the back just to bring her down the engine seems to hydroplane alot at full trottle
needs to come down

[JimC]

I would think that would be normal enough for a 40hp 2s.
Ballast on the back? Strange one. Maybe a set of Doel fins on the engine might help. I remember having them on a Orkney Fastliner and it helped keep the nose down a bit.

[twinkle]

yes jim there no 1 on my to do list they would help big time when we done the ballast on the boat stern was still a bit high
so it planes a bit