OK Guys
Its me again with another dumb question!
How many no load revs should you get from the W40? at max throttle?
I just set up my new alternator with a very nice strobe light borrowed from a buddy and its dead on at 500rpm & 1000rpm I did not check it at higher revs but full throttle I only saw about 2000rpm on the tach!
Ed
S/V Moonlight Mile
Ed,
This one is easy to answer. According to my Perkins 4-107 manual, here are the following answers!
Pleasure Craft (high speed) 4000 rpm 48 SHP (shaft horse power)
Pleasure Craft (low speed) 3600 rpm 45 SHP
Commercial Craft 3000 rpm 36 SHP
Hope that helps... Dale
My data confirms Dale's list. If you have the propeller engaged, this will affect the rpm. The proper propeller (size and pitch) will allow the engine to achieve the maximum rpm when underway. Running the propeller in the slip will not allow the engine to reach maximum rpm. My experience was that in the slip, the maximum rpm was about 2800rpm while 3000 underway.
hi
the rpm is set by the injector pump,the numbers on it tell you the year,flow rate,max rpm,i believe the info is on an engine post if not let me know and i will look it up,yours oceanpilgrim
It's a tach calibration problem. I went over to visit Ed today. He changed his alternator to a 105A and now needs to recalibrate his tach. He has a strobe to determine rpm, now needs to get the tach to read the same. He's on the right track to get it straightened out when the water comes back. Maybe he'll give me the tach settings when he figures them out since I am going to be installing the same alternator...
Hey Ray,
Where did the water go?
Dale
The north wind blew it to Belize which is where we all need to be- we're all sitting on bottom. That's all right- we'll be skiing again next week...
Hey Dale the other advantage we have is we can inspect the bottom without a travel lift, later we can go skiing!!
On the great lakes when the wind blows directly down or up a lake, we can get momentary surges of 10 plus feet at the ends. The amount of change depends on the amount of wind and how quickly the wind builds. We also get small differentials when it blows across the lakes. It can last a few hours to a day before things get back to normal. The weather people call them a seiche.
There have been many instances throughout history where people have drown because the were walking where water should have been and it came back, or were over come by the flood waters on the high end. One such occurrence was in 1954 in Chicago where eight people drowned when water rushed inland.
This fall the water rose 5ft in less than one hour during a fall storm in Buffalo. For us it is a big deal because we do not have a tide so we tie off a bit different than you might. For the most part we have floating docks which helps offset this non scheduled event.
Belize... interesting.
Dale