NAUSET 16 Yamaha F70

Optimizing the performance of Boston Whaler boats
lgdpt
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NAUSET 16 Yamaha F70

Postby lgdpt » Wed Oct 28, 2020 5:06 pm

Hello everyone.

I purchased a 2017 Yamaha F70 (used) with no controls I need to mount it on my bare hull 1961 NAUSET 16 with no steering.

Give advice on what equipment I should get and where to purchase the
  • control box
  • steering wheel
  • cable
  • rigging wires
  • gauges
  • etc.

I only have a bare console,a fuel tank, a bare hull, and the F70 engine. I don't have a propeller yet.

I'm flying blind. I figured this has been done several times by people here.

Thank you for advice.

Travis

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Phil T
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Re: NAUSET 16 Yamaha F70

Postby Phil T » Wed Oct 28, 2020 6:05 pm

Sim Yamaha http://www.simyamaha.com

binnacle
key switch
tach
harnesses.

Throttle/shift cables (measure the length and select)
https://www.wholesalemarine.com/teleflex-ccx643-control-cable-assembly-tfxtreme-6400-series/

15" destroyer steering wheel
https://www.jamestowndistributors.com/product/product-detail/97201

Steering Helm/cable kit (measure length and select)
https://www.wholesalemarine.com/safe-t-qc-rotary-steering-kit-by-teleflex.html

Mount the engine two-holes-up from lowest mounting height. Drill the red or yellow holes.

Image
Fig. 1. Recommended transom hole location for lower pair of hole for boats with shallow engine splash wells

Prop -
13.25 x 14 PowerTech SCP 6100, [engine mounting height should be three-holes-up from lowest mounting height]
13.25 x 14 Yamaha Performance Series, [engine mounting should be two-holes-up or three-holes-up from the lowest mounting height].

Powertech prop - Ken @ http://www.propgods.com
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lgdpt
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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Wed Oct 28, 2020 6:53 pm

Phil, I owe you. Thank you,sir. I have shopping to do. Truly appreciated.

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Re: NAUSET 16 Yamaha F70

Postby biggiefl » Thu Oct 29, 2020 1:45 pm

eBay for used or new parts
On my 24th Whaler. Currently in the stable: 86 18' Outrage, 81 13' Sport(original owner), 87 11' Sport, 69 Squall(for sale cheap).

lgdpt
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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Thu Mar 18, 2021 12:25 pm

HI everyone. I have everything ordered (thank you).

However, Im having trouble with the prop... I cant find the two props posted above anywhere. I found these two that are the same size:

https://www.getaprop.com/powertech-red3 ... -50-130-hp

https://www.getaprop.com/powertech-nrs3 ... -50-130-hp

Thoughts? Anyone have another suggestion? thank you!

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Phil T
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Re: NAUSET 16 Yamaha F70

Postby Phil T » Thu Mar 18, 2021 1:24 pm

Contact Ken at http://www.Propgods.com for the PowerTech props

and

Andy at SIM Yamaha. http://www.simyamaha.com

Right handed rotation.

Do not substitute propeller model or size unless Ken or Andy say otherwise.
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lgdpt
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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Thu Mar 18, 2021 1:31 pm

I communicated with both Andy and Ken. Andy recommended an aluminum propeller. Ken didn’t have the propellor recommended [earlier in this thread]. Ken suggested a 17-pitch propeller.

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Phil T
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Re: NAUSET 16 Yamaha F70

Postby Phil T » Thu Mar 18, 2021 7:10 pm

Sorry about this. I am highly surprised Andy recommended an aluminum propeller for you. Many years of experience and testing here has resulted in the recommendation to never install an aluminum prop on an outboard larger than 40-HP.

I stand by the Yamaha Performance propellers listed above.

One could also go with the Yamaha Painted Stainless steel in 13 x 17. It is a bit more economical and a very good propeller.
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lgdpt
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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Thu Mar 18, 2021 8:43 pm

Please don't apologize. You are helping me.

Q1: What about a YAMAHA K SERIES PERFORMANCE 3 STAINLESS STEEL PROPELLER - 3 BLADE - 13.25 DIA - 14 PITCH - RH ROTATION?

It is the right size.

Q2: What does "K series" mean?

Q3: Should I avoid {K-Series]?

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Phil T
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Re: NAUSET 16 Yamaha F70

Postby Phil T » Thu Mar 18, 2021 9:24 pm

K series is how Yamaha identifies its intermediate gearcase.

Yes--that is the Performance series propeller.

I forgot to add my last propeller shop from which Boston Whaler owners have had good service and support:

Dan's Discount Props. https://dansdiscountprops.com/index.cfm
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lgdpt
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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Fri Mar 19, 2021 12:20 am

I bought a performance series 13 1/4 X 14 from eBay for $430.

What are appropriate steering cable lengths?

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Phil T
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Re: NAUSET 16 Yamaha F70

Postby Phil T » Fri Mar 19, 2021 9:14 am

Opinions on the steering cable range from 14' to 16'.

Review the bottom 4 posts on this thread: http://www.continuouswave.com/ubb/Forum3/HTML/000008.html
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lgdpt
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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Fri Mar 19, 2021 11:58 am

PHIL T--Thank you.

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Re: NAUSET 16 Yamaha F70

Postby jimh » Sat Mar 20, 2021 10:49 am

Regarding propellers, the Yamaha OEM propellers are very good propellers. In general OEM-branded propellers tend to cost more, and many times propellers from aftermarket propeller companies will be significantly less expensive than OEM-branded propellers.

In the case of Yamaha propellers, Yamaha ended up buying the independent American company that was making propellers for them. For many years Yamaha was a customer of PRECISION PROPELLERS in Indianapolis, Indiana, and in 2008 they bought the propeller company, which is now known as Yamaha Marine Precision Propellers, Inc. There are several other companies in the business of making boat and airplane propellers that use the name "Precision Propellers" but they are not located in Indianapolis, Indiana. At one time Precision Propellers of Indianapolis was the maker of a line of propellers branded as "TURBO" propellers. Here is a excerpt from their old website that gives some history:

About Us

History:
Turbo® is a brand name for propellers, manufactured by Precision Propeller Industries, Inc. in Indianapolis, IN. Since 1969, Yamaha Marine Precision Propellers has been a manufacturer of high quality performance driven stainless steel propellers.

Jim Booe started Yamaha Marine Precision Propellers, Inc. as a prop repair service in 1969. Racing and race prop development occupied a good deal of Jim's time in those days and this background gave him the experience to meet the needs of the rapidly expanding high performance bass boat market. The bass boaters wanted to go fast and Jim's props made it happen.

Early in 1981, Jim produced the first of our investment cast one-piece stainless steel propellers and the development of the Turbo propeller had begun. It was not long before it became clear that sheer top speed was only a part of the need. Quick hole shot, load-handling ability, and stabilizing the boats handling led to the production of The Performance Prop. This approach appealed to stern drive runabout boaters and again the market expanded.

In July of 2008, the assets of Yamaha Marine Precision Propellers, Inc. were purchased by Yamaha Motor Corporation, U.S.A., and a new company was formed, Yamaha Marine Precision Propellers Industries, Inc. Together with our history of manufacturing quality boat propellers and Yamaha's resources, Yamaha Marine Precision Propellers Industries, Inc. is well positioned to lead in the world marine propeller markets.

Source: https://web.archive.org/web/20190904033 ... /about.php

Regarding any difference in performance from a propeller made of steel and painted and a propeller made of steel and polished, I doubt there is any effect of the propeller surface finish on performance. The polished steel propellers generally require more labor to manufacture and usually cost more than painted steel propellers.

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Re: NAUSET 16 Yamaha F70

Postby jimh » Sat Mar 20, 2021 10:58 am

The sidebar topic of propeller shaft rotation direction in forward gear and the handedness of the propeller has been moved to its own topic and thread.

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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Wed Mar 24, 2021 3:13 pm

IMG_0887.jpg
Fig. 2. An engine temporarily mounted to a transom using the highest possible mounting position, which for this specific engine is the "three-holes up from lowest position."
IMG_0887.jpg (72.31 KiB) Viewed 9231 times


Before I drill the lower holes, how many should I drop [the Yamaha F70 engine] down for a Yamaha Performance Series?

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Re: NAUSET 16 Yamaha F70

Postby jimh » Thu Mar 25, 2021 5:29 pm

The spacing between the upper set of holes and the lower set of holes is described on another article in PERFORMANCE.

Before you drill the lower pair of holes you need to CAREFULLY READ FOR COMPREHENSION the article at

viewtopic.php?f=7&t=5808

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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Fri Mar 26, 2021 11:17 am

Thank you. I read [the linked article on the location of the lower mounting holes when installing engines on boats with shallow splash wells].

[I think] I need to drop [the engine mounting location as shown in Figure 2 above by] one hole and drill there.

I will read [the linked article on the location of the lower mounting holes when installing engines on boats with shallow splash wells] one more time to confirm.

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Phil T
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Re: NAUSET 16 Yamaha F70

Postby Phil T » Fri Mar 26, 2021 11:41 am

Please STOP confusing the hole location with the actual position of the motor.

The motor position should NOT be taken into account.

Get a measuring tape and MEASURE the holes. Look at the DIAGRAM with the distances and then measure to the locate the lower hole location. Mark it, then drill.

If it is easier, REMOVE THE ENGINE, measure, mark, drill.

Once holes are drilled, THEN you adjust the engine.
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Re: NAUSET 16 Yamaha F70

Postby jimh » Fri Mar 26, 2021 12:05 pm

The article on the location of the lower mounting holes when installing engines on boats with shallow splash wells describes how to position the lower mounting holes on boats that have a shallow engine splash well. A NAUSET 16 boat has a shallow engine splash well.

The article on the location of the lower mounting holes when installing engines on boats with shallow splash wells describes only two recommended locations for the lower mounting holes for use on boats with shallow engine splash wells.

I recommend you re-read the article on the location of the lower mounting holes when installing engines on boats with shallow splash wells and pay more attention to the purpose of the article. The article has nothing to do with where the engine will eventually be mounted to the transom in terms of the engine mounting height. The article only describes where to locate the lower engine mounting holes on boats with shallow engine splash wells so that the inboard end of the holes will be above the engine splash well.

It appears you have already drilled the upper set of holes. It appears you have located them at or very close to the BIA recommended position. You should now follow the advice in the linked article regarding where to drill the lower holes.

In the simplest terms, there are only two options for you: the location shown in yellow or the location shown in green.

YOU NEED TO CAREFULLY READ THE TWO PARAGRAPHS THAT BEGIN WITH "If the lower pair of transom holes is spaced ..."

The article makes the choice of which hole to use abundantly clear. PLEASE READ THE ARTICLE AGAIN. The article has been carefully written to provide ALL the information you need to make a choice of lower engine mounting hole location on boats with shallow engine splash wells.

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Re: NAUSET 16 Yamaha F70

Postby lgdpt » Fri Mar 26, 2021 12:26 pm

I drilled the top holes based on measurements.

The Yamaha F70 outboard engine was no near me when I did that.

Then I lined-up it and took the picture to see how it lined up. It is off and ready for the lower hole to be drilled.

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Re: NAUSET 16 Yamaha F70

Postby jimh » Fri Mar 26, 2021 2:30 pm

lgdpt wrote:Then I lined-up it and took the picture to see how it lined up. It is off and ready for the lower hole to be drilled.


What does "it" refer to in the three different places that pronoun is used in your two sentences above? I don't understand your meaning.

Generally when a process of alignment has occurred (as in "lined-up") there are two objects involved. The two objects are positioned in some sort of alignment and then are said to be "lined up."

What are the two objects you refer to? What was their alignment position?