Texas Barrelback 20

A forum for contacting other builders of Ken Hankinson designs. These designs are now a part of the Glen-L family.

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steves
Posts: 90
Joined: Fri Sep 11, 2015 7:35 am
Location: Friendswood, TX

Re: Texas Barrelback 20 - fuel tank

Post by steves » Mon May 07, 2018 5:18 pm

Folks,
I literally happened across what appears to be an authentic Chris Craft fuel tank. See the pictures below and my google search of Chris Craft fuel tanks shows a few that look very similar.

I need a fuel tank.

This one is kind of cool.

and its $128.

It looks like its in good shape and maybe galvanized steel. Do you think I should get it and use in my barrelback? By doing some basic math it appears to be about 18 gallons. may not be big enough for a 5.7 L.


cc fuel tank big.jpg
cc fuel tank nozzle.jpg
Last edited by steves on Mon May 07, 2018 5:34 pm, edited 1 time in total.

steves
Posts: 90
Joined: Fri Sep 11, 2015 7:35 am
Location: Friendswood, TX

Re: Texas Barrelback 20 - tool caddy

Post by steves » Mon May 07, 2018 5:27 pm

Guys, for the last 3 days, I have not had to go into my boat for a lost tool dropped down through the unfinished deck!

How many of you can say that??

I built a tool caddy, it took 20 minutes and has already saved that much time!
Attachments
tool caddy.jpg

neel thompson
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Joined: Fri Oct 01, 2010 2:33 pm
Location: Collegeville, Pa

Re: Texas Barrelback 20

Post by neel thompson » Tue May 08, 2018 3:07 am

Steve-- I don't think you will be happy with an 18 gallon tank. I have a 40 gallon tank in my Gentry with a 5.7 motor. That is an overkill and I usually fill it to about 28 gallons. That gives me a nice cruising range. Figure you are going to get 3 to 4 mpg at cruise speed and maybe 2 to 3 mpg at a fast cruise speed. I would go with a minimum of a 25 gal. tank if I were you. My two cents !!

PeterG
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Joined: Mon Dec 03, 2007 7:08 am
Location: Connecticut

Re: Texas Barrelback 20

Post by PeterG » Wed May 09, 2018 3:36 pm

There can be a few issues with antique runabout fuel tanks. For example there may be internal corrosion with the steel tanks and a major safety issue if the fuel line connection is on the bottom instead of the tank top like modern tanks are required to have. Your boat plans/instructions have a recommended tank size which I suggest sticking with for weight and balance reasons.
Your boat is looking great so far, nice work!
Murphy's Law: Anything that can go wrong, will go wrong.
Griffin's Law: Murphy was an optimist.

steves
Posts: 90
Joined: Fri Sep 11, 2015 7:35 am
Location: Friendswood, TX

Re: Texas Barrelback 20

Post by steves » Sat Jun 23, 2018 5:05 am

ok, you guys talked me out of the really cool, antique and possibly problematic tank. I'm going with a less problematic, boring 29 gallon plastic one!

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hoodman
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Joined: Thu Nov 10, 2011 8:48 am
Location: Lafayette, IN

Re: Texas Barrelback 20

Post by hoodman » Sat Jun 23, 2018 5:11 am

It will be below deck anyways. A good decision to go with a new tank.
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139

steves
Posts: 90
Joined: Fri Sep 11, 2015 7:35 am
Location: Friendswood, TX

propellor shaft length question

Post by steves » Sat Jun 23, 2018 5:12 am

Folks,
I calculated my shaft length to be 45 3/4" long with the following beyond the strut (1" diameter shaft):
-standard SAE taper 2 3/4"
-standard SAE beyond the taper 1 3/4" (leaves room for threads and cotter pin)
-1" space between prop shaft and strut

for a total of 5 1/2" beyond the strut.

My prop shaft guy says I need 4.6" beyond the strut (says that will give me 1/2" clearance betwen prop and strut).

Do you guys recommend the longer or shorter shaft, what is the groups experience? Thanks folks in advance and have an awesome weekend!

Steve

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hoodman
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Location: Lafayette, IN

Re: Texas Barrelback 20

Post by hoodman » Sat Jun 23, 2018 6:22 am

Someone's math is wrong because 5.5 - 4.6 is .9 not .5.
Matt

Building a Geronimo......!
viewtopic.php?f=2&t=25139

steves
Posts: 90
Joined: Fri Sep 11, 2015 7:35 am
Location: Friendswood, TX

Re: Texas Barrelback 20

Post by steves » Sat Jun 23, 2018 7:09 am

Matt,
I'm sorry I may not be clear.

Using standard SAE dimensions I go t 5.5".

My shaft guy says I need a 4.6" dimension.

The debate is to go with either a 5.5" or 4.6" distance beyond the strut. My prop guys dimension seems tight to me!

Thanks for your interest and I hope I'm clear.

Steve

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DrBryanJ
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Location: Pompton Plains, NJ

Re: Texas Barrelback 20

Post by DrBryanJ » Sat Jun 23, 2018 7:23 am

I would not have too much distance between the prop and the strut. (I believe it should be 1 shaft thickness or less.) Neel THompson had too much space and he eventually lost his prop because the shaft fatigued.
Bryan

Building a malahini "Mona Lisa"

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

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Bill Edmundson
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Re: Texas Barrelback 20

Post by Bill Edmundson » Sat Jun 23, 2018 8:48 am

Matt

The strut bearing, cutless, is hard rubber. It has groves in it for water to pass through to cool it. There must be some clearance from strut to prop. for the water to flow. Bryan is correct that this is 1 diameter or a little less.

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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kens
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Location: Coastal Georgia

Re: Texas Barrelback 20

Post by kens » Sat Jun 23, 2018 9:52 am

my prop shaft guy only wanted 1 dimension. he only wanted from transmission flange to back of strut, he did all the rest.
Oak is over rated, everything about it takes extra time; then it warps, splits or checks !!! :roll:

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kens
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Re: Texas Barrelback 20

Post by kens » Sat Jun 23, 2018 9:55 am

my prop shaft guy only wanted 1 dimension. he only wanted from transmission flange to back of strut, he did all the rest. I also let him mount the tranny coupling to the shaft, he mounted and faced off the flange for it to run true to the shaft.
Oak is over rated, everything about it takes extra time; then it warps, splits or checks !!! :roll:

steves
Posts: 90
Joined: Fri Sep 11, 2015 7:35 am
Location: Friendswood, TX

Re: Texas Barrelback 20

Post by steves » Sat Jun 23, 2018 10:03 am

Ken,
I originally gave him the tranny to strut, but I had already calculated the rest based off standard SAE information, he said I had too much behind the strut distance.

I have access to a metal lathe and can reface the flanges as necessary and agree its important to ensure its face is square to the shaft.

Thanks!

Steve

steves
Posts: 90
Joined: Fri Sep 11, 2015 7:35 am
Location: Friendswood, TX

Re: Texas Barrelback 20

Post by steves » Fri Jun 29, 2018 5:26 am

I suppose I will give him the dimensions he wants, if its short I can add a spacer between tranny and prop couplings.

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