Roberta's Torpedo

Designs for inboard or outboard power

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Rich Coey
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Re: Roberta's Torpedo

Post by Rich Coey » Thu Jan 23, 2014 4:16 pm

Everyone,

Came in on this a little too late but may help someone in the future. Roberta when you said "Sure wish they made hole saws about 24" long", that reminded me I made one for drilling the shaft hole on my boat. Was very easy and cheap. All it took was a piece of seamless tubing about 16" long, 1.5" O.D. with teeth ground and offset on the end and an old hole saw bolted to the other end to hook up to the extension . Once it was set up and going through the guide block it only took about ten minutes to go through the keel.

Rich
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Roberta
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Re: Roberta's Torpedo

Post by Roberta » Thu Jan 23, 2014 4:32 pm

Thanks! I thought about doing something like that but got lulled into what I did. Oh well!!!

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

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kens
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Re: Roberta's Torpedo

Post by kens » Thu Jan 23, 2014 6:59 pm

Now that is almost like cheating!!!!
Oak is over rated, everything about it takes extra time; then it warps, splits or checks !!! :roll:

cusoak
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Re: Roberta's Torpedo

Post by cusoak » Fri Jan 24, 2014 10:12 am

Roberta, That's a nice looking jig. Have to hand it to you that takes a lot guts to drill a hole like that in an installed Keel.
Good Job.
Jeff

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Roberta
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Re: Roberta's Torpedo

Post by Roberta » Fri Jan 24, 2014 5:25 pm

Thanks, Jeff!

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

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Roberta
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Re: Roberta's Torpedo

Post by Roberta » Sat Jan 25, 2014 1:13 pm

Been a kinda of a busy week this week. Milwaukee boat show is on and our ACBS chapter is displaying boats again. We get invited every year and the boat show committee gives us a very nice spot for free. Yesterday was a ton of laundry and then off to the show for my day of representing the club.

Today Rich was my go-for as I cut some more batten notches. Tomorrow we will be heading out for the last day of the boat show and help with teardown and hope everyone gets home safely. Supposed to be cold, windy and snowy. YUCK. I'm glad I decided to leave the Zip home this year. It is pretty much buried behind the Torpedo anyway. And I don't need an extra project of cleaning snow, ice and salt off of it like last year. :roll:

Next week I will be clearing out the area on frame two for the shaft log and setting the fiberglass tube in for the prop shaft. And also setting the bottom battens and FAIRING!!!! Hopefully by next week I will be starting to plank.

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

slug
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Re: Roberta's Torpedo

Post by slug » Sat Jan 25, 2014 1:31 pm

Roberta; Did you buy a tube?
Doug

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Roberta
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Re: Roberta's Torpedo

Post by Roberta » Sat Jan 25, 2014 2:18 pm

Yeah, I bought an 8 ft length of 1-3/4" OD by 1-1/2 ID pultruded fiberglass tube. Seem's very strong and should work fine for lining the prop shaft hole. I think it is polyester and not epoxy glass, so I will coat the inside with epoxy resin to make sure it is sealed well. If I were going to use it for the shaft log I think wound epoxy glass would be better, but I will be using a bronze log instead.

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

slug
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Re: Roberta's Torpedo

Post by slug » Sat Jan 25, 2014 2:54 pm

My bronze log is fastened to the fibreglass tube with a length of rubber hose. Is that the way you plan to do yours?
Doug

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Roberta
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Re: Roberta's Torpedo

Post by Roberta » Sat Jan 25, 2014 5:23 pm

No, once the tube is set in the keel, I'm going to grind the tube flush with the topside of the keel (in the boat) and with the bottom planking (once planking is done). Then fiberglass it in with the bottom fiberglass and lay a bed of fiberglass on topside of the keel. Then the bronze shaft log will be screwed to the topside of the keel and the hose and stuffing block will attach to that. I'll seal the log to the bedded keel with either 4200 or 5200. I'm not using the fiberglass tube as a shaft log. Just a means of sealing the prop shaft hole.

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

slug
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Re: Roberta's Torpedo

Post by slug » Sat Jan 25, 2014 6:03 pm

OK; Got it . I was calling my shaft seal the log. So in effect my glass tube is the log where it extends inside the hull, and the seal is attached to it with the rubber hose.
That is how it was in the Supra donor boat.
BTW. Got the first mahogany planks on today...the transom is nearly done and ready for sanding. Looking good so far. With the new carbide blade I'm able to get four 1/8" planks out of a 4/4 rough board. There's enough meat left to finish them thru the planer.

Doug

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Roberta
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Re: Roberta's Torpedo

Post by Roberta » Sun Jan 26, 2014 6:46 am

Sounds great, Doug!! I was going to make my shaft log like you did, but going off at the end of the drill through the frame caused the hole to be slightly off alignment. Using the traditional log will allow me to correct the error.

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

alycat
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Re: Roberta's Torpedo

Post by alycat » Sun Jan 26, 2014 7:20 am

What technique are u using to cut your batten notches? I was thinking a router with a simple jig of some type?
Will Manwaring
Shreveport, LA

Barrelback 19' stretched to 20'

https://www.facebook.com/media/set/?set ... 3171d9bb06

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Roberta
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Re: Roberta's Torpedo

Post by Roberta » Sun Jan 26, 2014 8:23 am

I'm using a mini Rockwell circular saw and setting the depth to the batten size. I make multiple cuts, break them off, and clean up the notch with a chisel.
Roberta "Queen of the Boat Builders"
Built Zip "Oliver IV", Super Spartan "Jimmy 70", and Torpedo "The Glen L".

alycat
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Location: Shreveport, LA

Re: Roberta's Torpedo

Post by alycat » Sun Jan 26, 2014 12:26 pm

Great idea thanks!! :D
Will Manwaring
Shreveport, LA

Barrelback 19' stretched to 20'

https://www.facebook.com/media/set/?set ... 3171d9bb06

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