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Author Topic:   NAUSET with Yamaha F70

boatdryver posted 02-01-2014 10:26 AM ET (US)
I'm assisting a friend in finding his first Whaler. We are going to look at a Nauset with a 2012 Yamaha F70 that is available. I remember reading CW threads involving this combination but can't find them on an internal search. I recall favorable comments on this model of Yamaha four stroke. Was 2012 the first year of a new version of the F70?
I'd appreciate any comments from people with experience regarding performance of this motor on a 16-feet hull with a load of four people. My friend's normal use will be two people poking around our bay, and I expect this would be fine with 70 HP. Thank you
JimL

macfam posted 02-03-2014 07:52 AM ET (US)
I don't have any experience with the Yamaha F70. We had a 1964 Nauset with a three-cylinder 70-HP Mercury, two-stroke-power-cycle outboard engine. The boat performed very well, and never had a time when more power was necessary. We spent lots of time tubing with two adults, two or three small kids, and another one on the tube. Still OK. If you were doing lots of water sports with large adults, [a Yamaha F70] might be marginal.Two people poking around the bay--ideal.
jimh posted 02-03-2014 07:59 AM ET (US)
[Moved to PERFORMANCE.]
Lupi posted 02-03-2014 09:08 AM ET (US)
We have a sakonnet 16 (year 1962) with a Yamaha F70 four stroke. The sakonnet is built on the same hull as the nauset.
This is a great combination. Previously, this boat had been powered with : 50 merc, 65 Johnson, 60 evinrude, 50 yam 4s.
This hull is light and so can be lightly powered.
70 is just right, because do not forget that if this hull was rated for 100hp, you won't find today any 100 hp under 375 lbs. The transom for nauset/sakonnet/easport was not design for that weight. Of course, you will find here many of these powered with modern 90-115 units, but on my opinion, that too hard for the transom.
In term of performance, the boat reaches easily 35-40 mph at WOT. Very low gaz consumption (less than 3gph average), hole shot is not a problem even when pulling ski or tube. And I would say that today, our boat is equiped with the stock prop (aluminium 15 pitch) and is mounted low on the transom. I'm sure you could get higher performances with a stainless steel prop and adequate engine mounting height on the transom.
tedious posted 02-03-2014 12:40 PM ET (US)
Jim, regarding your question "Was 2012 the first year of a new version of the F70?" - there is no old version of the F70. The F70 was introduced in 2010, and there are plenty of members here (including myself) with positive experiences.
Tim
boatdryver posted 02-03-2014 02:56 PM ET (US)
OK, thanks everyone for the input. that F70 looks just right on the transom of one of these hulls, and the performance and fuel consumption are great.
JimL
irishcreamer posted 02-08-2014 01:27 PM ET (US)
Great combo. Smooth, quiet, fuel efficient and light enough for the older hulls. I've fished on Ron's boat - the engine is a great match for his hull.
IC

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Author	Topic: NAUSET with Yamaha F70
boatdryver	posted 02-01-2014 10:26 AM ET (US) I'm assisting a friend in finding his first Whaler. We are going to look at a Nauset with a 2012 Yamaha F70 that is available. I remember reading CW threads involving this combination but can't find them on an internal search. I recall favorable comments on this model of Yamaha four stroke. Was 2012 the first year of a new version of the F70? I'd appreciate any comments from people with experience regarding performance of this motor on a 16-feet hull with a load of four people. My friend's normal use will be two people poking around our bay, and I expect this would be fine with 70 HP. Thank you JimL
macfam	posted 02-03-2014 07:52 AM ET (US) I don't have any experience with the Yamaha F70. We had a 1964 Nauset with a three-cylinder 70-HP Mercury, two-stroke-power-cycle outboard engine. The boat performed very well, and never had a time when more power was necessary. We spent lots of time tubing with two adults, two or three small kids, and another one on the tube. Still OK. If you were doing lots of water sports with large adults, [a Yamaha F70] might be marginal.Two people poking around the bay--ideal.
jimh	posted 02-03-2014 07:59 AM ET (US) [Moved to PERFORMANCE.]
Lupi	posted 02-03-2014 09:08 AM ET (US) We have a sakonnet 16 (year 1962) with a Yamaha F70 four stroke. The sakonnet is built on the same hull as the nauset. This is a great combination. Previously, this boat had been powered with : 50 merc, 65 Johnson, 60 evinrude, 50 yam 4s. This hull is light and so can be lightly powered. 70 is just right, because do not forget that if this hull was rated for 100hp, you won't find today any 100 hp under 375 lbs. The transom for nauset/sakonnet/easport was not design for that weight. Of course, you will find here many of these powered with modern 90-115 units, but on my opinion, that too hard for the transom. In term of performance, the boat reaches easily 35-40 mph at WOT. Very low gaz consumption (less than 3gph average), hole shot is not a problem even when pulling ski or tube. And I would say that today, our boat is equiped with the stock prop (aluminium 15 pitch) and is mounted low on the transom. I'm sure you could get higher performances with a stainless steel prop and adequate engine mounting height on the transom.
tedious	posted 02-03-2014 12:40 PM ET (US) Jim, regarding your question "Was 2012 the first year of a new version of the F70?" - there is no old version of the F70. The F70 was introduced in 2010, and there are plenty of members here (including myself) with positive experiences. Tim
boatdryver	posted 02-03-2014 02:56 PM ET (US) OK, thanks everyone for the input. that F70 looks just right on the transom of one of these hulls, and the performance and fuel consumption are great. JimL
irishcreamer	posted 02-08-2014 01:27 PM ET (US) Great combo. Smooth, quiet, fuel efficient and light enough for the older hulls. I've fished on Ron's boat - the engine is a great match for his hull. IC