Gentry build continued

Designs for inboard or outboard power

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Bill Edmundson
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Re: Gentry build continued

Postby Bill Edmundson » Wed Sep 28, 2016 2:31 pm

Neel

I've thought about some of this. Matching the deck curvature, the planking, the coatings... I used West for bright work originally. It had an amber tint. Now it's clear. etc.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

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Roberta
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Re: Gentry build continued

Postby Roberta » Wed Sep 28, 2016 2:35 pm

Well, a skilled guy like you, it's just a PITA. :lol:

Roberta :D
Roberta "Queen of the Boat Builders"
Built Zip "Oliver IV", Super Spartan "Jimmy 70", and Torpedo "The Glen L".

bob smith
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Re: Gentry build continued

Postby bob smith » Wed Sep 28, 2016 2:47 pm

Bummer, but if it were easy, everyone would be doing it.
Bob Smith
Chester, SC

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kens
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Re: Gentry build continued

Postby kens » Wed Sep 28, 2016 3:19 pm

I wonder if your hatch found my floorboards. ?? !! :lol: :roll:
Oak is over rated, everything about it takes extra time; then it warps, splits or checks !!! :roll:

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Bill Edmundson
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Re: Gentry build continued

Postby Bill Edmundson » Wed Sep 28, 2016 3:25 pm

Ken

All probably exploded on impact!

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

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hoodman
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Re: Gentry build continued

Postby hoodman » Wed Sep 28, 2016 4:01 pm

Ewww sorry about the hatch. At least that gives you an excuse to build something on your boat. Most hats will float for 20-30 seconds if you can whip around and grab them... Always excitig!

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vupilot
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Re: Gentry build continued

Postby vupilot » Wed Sep 28, 2016 5:04 pm

Geeze Neel, what luck. Maybe embed some strong magnets into that hatch to hold her down invisibly.

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rbrandenstein
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Re: Gentry build continued

Postby rbrandenstein » Wed Sep 28, 2016 7:31 pm

Man, that sucks. We were talking about your boat travails at the Gathering and then it continues.
Sorry to hear that.
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DrBryanJ
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Re: Gentry build continued

Postby DrBryanJ » Thu Sep 29, 2016 3:18 am

Sorry to hear that Neel. You need to do something to exercise your gremlins.
Bryan

Building a malahini "Mona Lisa"

My wife said "If I build a boat, she's getting a divorce."

neel thompson
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Re: Gentry build continued

Postby neel thompson » Mon Oct 03, 2016 7:09 am

I have been wondering since my prop shaft sheared, how far aft of the strut the front part of the prop hub was. I suspected the distance was too great and caused the shaft to fail. I stumbled on a picture I took a few years ago showing the prop and shaft. I am sure the distance was more than the 1" diameter of the shaft. It looks like at least 2". New builders should pay close attention to this as it was one of those rules that I found out about too late. And I thought I knew everything !!!
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Bill Edmundson
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Re: Gentry build continued

Postby Bill Edmundson » Mon Oct 03, 2016 7:20 am

Neel

The rule of thumb is 1 dia. or slightly less. Now we know why. On some boats, the strut to coupling gets pretty long and you need a whip strut. I don't know what that point would be.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

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Roberta
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Re: Gentry build continued

Postby Roberta » Mon Oct 03, 2016 7:35 am

Glen L's "Inboard Motor Installation" book covers all of this. They talk about rudder offset, distance from struts to prop hub (1 Diameter-Maximum), whip strut bearings and a whole lot more. I had never installed an inboard engine before and found the book to be a wealth of information. Very worth having.

Roberta :D :D :D :D
Roberta "Queen of the Boat Builders"
Built Zip "Oliver IV", Super Spartan "Jimmy 70", and Torpedo "The Glen L".

bob smith
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Re: Gentry build continued

Postby bob smith » Mon Oct 03, 2016 3:00 pm

The Lockheed Electra had some early crashes that were finally determined to be caused by a phenomenon named "whirl mode". Same as what may have happen to Neel. Too much shaft between bearing and prop. Once it got "whirling" the end was near!
Bob Smith
Chester, SC

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jenko
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Re: Gentry build continued

Postby jenko » Mon Oct 03, 2016 3:25 pm

Roberta wrote:Glen L's "Inboard Motor Installation" book covers all of this. They talk about rudder offset, distance from struts to prop hub (1 Diameter-Maximum), whip strut bearings and a whole lot more. I had never installed an inboard engine before and found the book to be a wealth of information. Very worth having.

Roberta :D :D :D :D

I also used this book .
As I went the Vee drive option I had a shaft length of 96'' so a whip strut was necessary the book said shaft needs support from a length of 40 times shaft diameter, or less for higher hp applications or if you get shaft whip so I am just getting away with one whip strut .With no vibrations so far up .

neel thompson
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Re: Gentry build continued

Postby neel thompson » Mon Jan 02, 2017 8:48 am

I finally got the new hatch stained, sealed, and coated with 14 coats of Schooner varnish. It seems to match up pretty good. Heading to Florida in a couple days till March 5th or so. When I get home it will be time to tackle the spray rails. Happy New Year to everyone. Hope to see over 100 of you at G-11 in September..... Neel
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