FP Mahe 36

[Scott730]

I would like to mention that you could operate these engine at 2800 rpm with no problem at all and get even more power out of them, but you would be burning around 1.5 gallons per hour. I routinely operate the engines at 2500 to 2700 rpm's for extended periods of time and have cruised at 7+ knots. You just burn more fuel and have a little more engine noise, but if you want to make that anchorage before dark........

[lstyles]

For the 30 hp engines:
On our trip we figured that motoring at 2700 rpm which we did for 15 hrs straight at one point (no wind) we used about 1.1 gallon/hr using both engines. Operating at 2000rpm we figured we used about 0.8 gallon per hr for both engines. Charging the batteries used about 0.7 per hr both engines.
Lori

[Therapy]

Originally Posted by lstyles

For the 30 hp engines:
On our trip we figured that motoring at 2700 rpm which we did for 15 hrs straight at one point (no wind) we used about 1.1 gallon/hr using both engines. Operating at 2000rpm we figured we used about 0.8 gallon per hr for both engines. Charging the batteries used about 0.7 per hr both engines.
Lori

I keep seeing this kind of evaluations for marine stuff and still do not get it.
I know currents etc make a difference in SOG but mpg is a more real figure to me.

If one burns a little more fuel but goes faster then the total time the engine is run and the amount of fuel burned could be the same.............in many instances.........what am I missing...........???
Besides the fact that for each setup there is an optimum that takes a long time to find.

[Nordic cat]

Originally Posted by Therapy

I keep seeing this kind of evaluations for marine stuff and still do not get it.
I know currents etc make a difference in SOG but mpg is a more real figure to me.

If one burns a little more fuel but goes faster then the total time the engine is run and the amount of fuel burned could be the same.............in many instances.........what am I missing...........???
Besides the fact that for each setup there is an optimum that takes a long time to find.

Therapy; there are a couple of basics regarding fuel consumption and boat speed for boats in displacement mode, i.e. NOT planing, and Catamarans NEVER plane!

First there is hull speed, which can roughly be calculated as:

1.34 x SQRT Lwl. So for a 36 ft boat, the hullspeed will be around 1.34 x SQRT36 = 1.34 x 6 = 8 knots. This is the point where there will be a resistance "hump" that is very inefficient to go beyond when motoring.

The next "fact" is that fuel consumption for a motor/propeller on a boat in displacement mode can roughly be calculated, using: Consumption = Constant x n e3. ( n is rpm) So if you know your consumption at one speed, you can roughly calculate what it will be at another.
Basically this means that to double the revs your consumption will be 8 times higher. This is not entirely true, as alternator loads, fricton losses etc. are relatively higher at lower speeds. Also windage, waves, wind speed and wind direction play a role, and are part of the Constant for a set of defined conditions.

I hope this clears things up a bit.

Regards

Alan

[Eleven]

Your in the Engineering phase again which I do have some experience of.
First I would say keep a note book on engine runs and note boat speed, engine revs, wind speed and direction.
Your (nautical)miles per gallon is speed divided by gallons per hour.
Shouldn't take long to work out your economical speed and your hurry along costs per mile. That will give you a good ides of how far your boat will could go on the fuel on board and whether it will go futher if you slow down a bit.
I suspect, not tested, that most economical speed is between two thirds and three quarters of the top speed. DATA PLEASE.
Oh the wind. Obviously it makes a difference, by making a note you'll have some idea of how much difference it makes. If the difference is big your prop may not be right.

[pguillemin]

Mahe 47 "OPTIONS" with owner Mark on board made it to Antigua last monday after a fast crossing from the Canary Islands .They stopped in Cap Verde and ,I think,had the time of their life .
I spoke with Mark after they arrived and he had only good things to say ( few warranty items )
So he is happy and the WIllmar team is happy.Only wish that we could spend as much time on the water as some of our owners

On the other hand Irie Cat was supposed to be our show boat in Miami.At the last minute we learned that it will not happen as they had other commitments .....surprise surprise.
So we had to fall back on our option B .Luis 's boat " COOL CAT" will be in
It is a 2007 model without the new portholes ...
Anyway we will welcome you all in Miami .February 14 to 18 at Bayside Marina dock C22

[N'GoRé]

Originally Posted by jean1146

I just was wondering if they are any menbers on this forum who have ordered the new FP mahe 36'.it would be interesting to exchange thoughts about the boat.

Hello, I'm french and don't speak very well, so Excuse me, I can speak a lotabout the firm Fountaine Pajot, and I am very décue by the building site, we do not have any service after sale. The leaders promised to us to occupy ourselves of our boat which is not finished and since 1 year no result. It'"s a pity....

[yeloya]

Ngorei

Yr message was not quite clear to me.. You can write in french if you prefer I will translate for those who are interested. Disappointed deçu for what ..

Yeloya

[Therapy]

Originally Posted by yeloya

Ngorei

Yr message was not quite clear to me.. You can write in french if you prefer I will translate for those who are interested. Disappointed deçu for what ..

Yeloya

I'm a thinkin he/she said the boat was supposed to be in his/her posession a year ago and still is not. leaders (Management) not responsive either. Please translate full story.

[ireaney]

Originally Posted by yeloya

Ngorei

Yr message was not quite clear to me.. You can write in french if you prefer I will translate for those who are interested. Disappointed deçu for what ..

Yeloya

I think what she is trying to say is that she is diappointed in FP as a company, their after sales service is non-existent, the management don't want to know their problems ie that after a year of complaining and them promising nothing has been done to rectify the faults.
I think they already have the boat because if you go into their profile they show a picture of their boat - maybe I am wrong, but whatever she is saying is that they are not happy with FP.

[pguillemin]

We are the importer and dealer for the USA of Fountaine Pajot and I must say that the shipyard has been working very closely with us in solving warranty problems.The procedure is to have the repairs details and costs send to your dealer then approved by the yard before starting work.
So far Fountaine Pajot has been standing behind their Mahe and the boats are aging very well with minor problems

[Nordic cat]

Originally Posted by pguillemin

We are the importer and dealer for the USA of Fountaine Pajot and I must say that the shipyard has been working very closely with us in solving warranty problems.The procedure is to have the repairs details and costs send to your dealer then approved by the yard before starting work.
So far Fountaine Pajot has been standing behind their Mahe and the boats are aging very well with minor problems

Could you enlighten us at to the nature of these minor problems? I felt that the boat was very "squeeky" on a test sail, alot of flexing around the nav table/galley area, as they for some reason have chosen not to join the furniture to the hulls

[N'GoRé]

Merci de traduire ma pensée! oui nous avons un mahé 36 n°23 depuis mars 2007, 50 annomalies plus ou moins graves ont été décelées par nous puis par un expert; et le chantier devais nous faire parvenir un protocol afin de finir le bateau. Et aujourdh'ui il n'en n'ait rien. Nous avons à notre effectif 3000 milles avec le mahé, qui correspond exactement à ce que nous recherchions, mais les relations et surtout la perte de confiance dans le respect de la clientèle ne nous conviennet pas.

[yeloya]

Originally Posted by N'GoRé

Merci de traduire ma pensée! oui nous avons un mahé 36 n°23 depuis mars 2007, 50 annomalies plus ou moins graves ont été décelées par nous puis par un expert; et le chantier devais nous faire parvenir un protocol afin de finir le bateau. Et aujourdh'ui il n'en n'ait rien. Nous avons à notre effectif 3000 milles avec le mahé, qui correspond exactement à ce que nous recherchions, mais les relations et surtout la perte de confiance dans le respect de la clientèle ne nous conviennet pas.

Ngorei basically says

" we had Mahe 36 hull #23 since March 2007 and detected more or less serious 50 defects and our findings were also approved by an expert. FP shuld have come up with an aggreement to solve this out. Instead, till now, they did nothing.. We did in the meantime 3.000 nm with Mahe which
is in line with our expectations but we are not pleased at all regarding their overall approach and the way they treat their customer.."


My questions are;

1-I assume you didn't notice these defects when the boat was delivered. Otherwise, you should have left the boat where she is until the problems are fixed.
2-if the problems occured later, they should have been solved out later under the term of warranty which I understand FP has declined to.
3-Again I assume that the defects are not major ones since you managed to make 3.000 nm.. or you fixed them all on yr expenses..
4-I am not familiar with french legislation, but in Turkey if the supplier couldn't fix the defects within 3 months , he has to either reimburse the money or (if the custmer agrees to) change defectfull vessel with another one.
Did you take any legal action ??


Cheers

Yeloya

[lstyles]

Hi,
You mentioned you have had a few leaks on the Mahes. Can you be more specific about where they were? My experience with other boats is that those leaks tend to occur in other boats as well. The reason I ask is that I recently noted a slight leak in Starboard window (along passageway) and wondered if others have had similar. If so their experience might make it easier to locate the source more quickly. By the way, I love my Mahe and she has now gone over 6500nm with little trouble. She seems fast to me (compared to other larger cats I have sailed) but I keep her light.
thanks,
Lori
Venti
Mahe #60
On her way to SF Bay