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  54 mph in Nauset

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Author Topic:   54 mph in Nauset
gcl posted 06-30-2003 01:34 PM ET (US)   Profile for gcl   Send Email to gcl  
Just passed the fifth hour on my new/leftover 1999, 90 hp Ficht mounted on my 1971 Nauset and as directed by the manual and dealer I opened the throttle to full for 30 second bursts. Hang onto your hat ! According to my new Raymarine depthfinder w/ speed indicator, I was soon travelling 54 mph @ 6000 rpm on Fishers Island Sound, CT. Talk about "rocking your world" !

I do not know how accurate the speedometer is, but I bet it is close. I will borrow a hand held gps and check it out. Anyone else out there get this kind of speed out of their 16' hull with a 90 hp ? Thanks.

prm1177 posted 06-30-2003 01:45 PM ET (US)     Profile for prm1177  Send Email to prm1177     
At top speeds my Lowrance fish finder water speed indicator is frequently out of whack with my GPS. I suspect the turbulence can cause these to misbehave. My GPS will give me a top speed of 48 while the water speedo will read 59. They will usually be within 1-2 mph of each other up to 38-40 mph. My boat's a 17 Outrage II with a 135 Optimax.
Bigshot posted 06-30-2003 02:42 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Those are great engines but count on 45+mph.
stagalv posted 07-02-2003 05:25 PM ET (US)     Profile for stagalv  Send Email to stagalv     
That does sound quite fast for a 90hp. Is that engine rated to run at 6000 rpm? My 115 Ficht is 5750 top rpm. I get 44kts which is just at 50mph -- plenty fast enough.
stagalv posted 07-02-2003 05:26 PM ET (US)     Profile for stagalv  Send Email to stagalv     
The above speeds are on a Montauk.
Eric posted 07-03-2003 10:36 PM ET (US)     Profile for Eric  Send Email to Eric     
My nauset with a 1999 Johnson 90 hits 44 on the gps, or about 49 on the Lowrance fishfinder. It's underpropped, and has the motor all the way down (bottom holes), and has a top, so might get a bit more, but the gps is the only way to know what is really happening.
JohnJ80 posted 07-03-2003 10:45 PM ET (US)     Profile for JohnJ80  Send Email to JohnJ80     
I discovered that my FF speedo was also off. However you can go to the prop calculator in the reference section which, if you enter zero slip, should give you the theoretical max.

i think you want to check that WOT rpm. it may be high and if it is, you could risk engine damage. if it is too high, figure out the right prop and make the change.

i just bought a 2003 75hp FICHT - love that engine. i do think you want to make sure the recalls were done on teh 1999 though, especially if that was pre bombarier. there was a oil seal or fuel seal issue or something which could lead to powerhead failure - happened to a friend of mine. so if you have a bombardier warranty you are ok but if its an OMC one that you could have an issue.

you will love that engine though - loads of torque, great hole shot, quiet and smoke free. Love mine.

j

gcl posted 07-09-2003 02:11 PM ET (US)     Profile for gcl  Send Email to gcl     
Thanks for the comments. I will check the RPM @ WOT and discuss the prop with the dealer if need be.


Yes, the engine is an OMC unwarranteed, new/leftover, which according to the dealer (who I trust), has had all of the factory upgrades. I did some research on the 90 FICHT prior to purchase and found that the problem engines were not the 75, 90 or 115. Even with my research, I know that I have taken a calculated risk. The engine was part of a package which included a prestine hull with original gelcoat. The interior blue gleams. People that do not know Whalers ask me if it is a new boat. I do not mean "new to me" - I mean showroom new. The console is original, but has been painted white on the outside - it is original wood finish on the inside and is varnished brillantly. The seat is not original, but is a modern cooler type seat. In front of the console is a removable Igloo cooler/seat. All that, and I bought the boat right.


I am a very happy guy. If you see me on Fisher's Island Sound CT/NY you'll recognize me by my boat and my mile-wide smile.

PS The boat also fishes well

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