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New Boat 4 Tchoup

CPAP machine Pat. Need a good nights sleep.
Hey Mr Wylieguy I have some questions regarding reefing a wishboom rigged mast. I'm gonna give you a ring.
 
A while back I was talking with Bedard about how I wanted to be able to remove the rig for some rowboat adventures. I wondered how it would row if i pulled out the centerboard and he suggested I make a simple skeg or foil for rowboat mode. So I've started on that.

But first, the top of the row boat adventure bucket list: The Missouri Breaks.

https://www.youtube.com/watch?v=Go-igKQTBlA&feature=emb_logo

I think the RoG would be a comfortable platform to do all 149 miles in the Monument.
 
Tchoupitoulas said:
A while back I was talking with Bedard about how I wanted to be able to remove the rig for some rowboat adventures. I wondered how it would row if i pulled out the centerboard and he suggested I make a simple skeg or foil for rowboat mode. So I've started on that.

But first, the top of the row boat adventure bucket list: The Missouri Breaks.

https://www.youtube.com/watch?v=Go-igKQTBlA&feature=emb_logo

I think the RoG would be a comfortable platform to do all 149 miles in the Monument.
Click to expand...

Wow. Just...wow. OK, then, thanks for this. Thank you VERY much.
 
I suspect the filmmakers went to great lengths to make it appear they were the only ones on the river. I see plenty of outfitters offering guided multi day trips, canoe rentals, shuttles etc. Mid season looks like it's quite crowded. But still, is that not some spectacular country?
IMG_2417.JPG
My first time shaping a foil. The others were CNC cut.
IMG_2445.JPGIMG_2450.JPG
It'll need something to hold it down. Bedard suggested a puck of lead so she'd bounce over a sandbar. I'm thinking some bungee line maybe.
IMG_2372.JPG
I figured the cut off part of the centerboard (replaced with lead) would make a good lower draft, longer chord rowboat foil.
IMG_2499.jpg
I guess I'll have to build some sort of foil caddy on the trailer.
 
Tchoup, I’ve been enjoying seeing your progress. Thank you for posting. I’m curious about the foils, a subject I know very little about. Have you read anything about how to shape the trailing edges and the problem of vortex induced oscillations?
 
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I don't know too much about that Tom but here is a detail from the plans. Vortex reducing angle?
IMG_2555.jpg
The first adventure may indeed be a rowboat adventure. The masts are the most expensive component. And no offers on Starbuck.
 
Tchoupitoulas said:
I don't know too much about that Tom but here is a detail from the plans. Vortex reducing angle?
View attachment 5981
The first adventure may indeed be a rowboat adventure. The masts are the most expensive component. And no offers on Starbuck.
Click to expand...

It looks like Bedard knows his stuff. I only learned of this issue recently ready a Bob Perry Fan Club Facebook post. It seems lots of study has been done on how to eliminate “flutter” in foils. Sharp or even rounded trailing edges create vortices. The detail you included eliminates the problem. Thanks for the clarification.

STARBUCK is a special boat. I hope someone see the potential.
 
Tchoupitoulas said:
A while back I was talking with Bedard about how I wanted to be able to remove the rig for some rowboat adventures. I wondered how it would row if i pulled out the centerboard and he suggested I make a simple skeg or foil for rowboat mode. So I've started on that.

I think the RoG would be a comfortable platform to do all 149 miles in the Monument.
Click to expand...

Oars are an excellent option, but not as easy to implement in non-standard conditions. Rowboats, Dories, drift boats, and river rafts fall into the standard conditions. The oar options are plentiful. When the freeboard goes up, or the beam falls out of the standards range, off the shelf options are typically not available.

In putting two rowing stations on a Moore 24, one station was hung off the outboard motor mount using a sliding seat setup. The cockpit station required custom length oars, oarlocks (and mounts), as well as modifications to traveler to provide a seat.

The standard fixed seat rowing geometry (as presented in Angus Rowboats) is a good starting point. I also put oars on a canoe that was 'fussy' to row. I erred and only had 7-inches from seat to oarlock when 8-12 inches were suggested. A quick test with a 3/4-inch collar on the oarlock helped a lot, but 1 1/2-inches were be added for a more flexible solution.

With a 149 mile row, be sure to include heel supports and a comfortable seat.

My plans for the breaks in 2020 were delayed due to covid concerns.

General wind direction on the breaks is upstream.

Ants
 
Dazzler said:
It seems lots of study has been done on how to eliminate “flutter” in foils. Sharp or even rounded trailing edges create vortices.
Click to expand...

A way to solve flutter while also inducing vortex shedding is to set up a sharp edge on (say) the upper half of the foil to port, and reverse that sharp edge on the lower edge of the foil. I've seen this done as a knife edge on the keel and rudder with the keen edge set to port on half the foil and half way down there's a crossover and the edge is set to starboard. Be careful while diving to clean those foils as you can slice your fingers on them.

But then you have to ask yourself - isn't it nice to have that 8 knot hum in the system? The harmonics give you a built-in audio speedo. I like mine - I have a 9 knot hum and a 12 knot harmonic (which is when you have to rush upstairs to find out how in the hell the boat is going that fast - usually something bad, like a squall, as you surge down waves!).

- rob/beetle
 
I have just bought plans for a boat designed by the late Joe Dobler. -- "Lissa". Plans cost a lousy $20.

lissa-4.jpg

94a018802f8175f9eacc369b9ab662cc.gif

I won't touch this until after the SHTP, if I even build this. I'm having to decide if this will work better for what I want to do, or the Caravelle that AZsailor so kindly sent me.

"Lissa" is 75% rowboat, 25% sailboat. The Caravelle is 90% sail, but you can row it a few hundred yards if you need to. After I get the Piper squared away, one of these will probably get built.
 
Thanks Rob. I'd like to have a hum.

Hey Ants, tell us about your Covid-denied Missouri Breaks trip. What boat were you taking?

Alan, I'm having fun keeping up with all of your boats. What does $20 get you exactly?
 
Tchoupitoulas said:
Thanks Rob. I'd like to have a hum.

Hey Ants, tell us about your Covid-denied Missouri Breaks trip. What boat were you taking?

Alan, I'm having fun keeping up with all of your boats. What does $20 get you exactly?
Click to expand...

You get a big zipped file with a bunch of PDF's an MS Word booklet and a mess of photos.

a bunch of pictures of the finished boat.
a scan of a typed 24 page manual written in the early days of stitch 'n glue
plans in "small" format
plans in "large" format
full sized patterns for the major hull parts.


Lissa, being rowed by one...

Dobler-Lissa-row.JPG
 
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Tchoupitoulas said:
Hey Ants, tell us about your Covid-denied Missouri Breaks trip. What boat were you taking?
Click to expand...

Several viable boat options are available. However, since it is a long drive to the Breaks, another 2-3.weeks would be added to fly fish some MT and WY waters. The dual purpose skews the boat selection.

First choice would be a Mini Mac 12 drift boat. Easily holds all gear and a cooler. This boat is the worse tracker of the three due to lack of keel and bottom rocker. Great for maneuvering in rivers.
image.jpeg

The next two choices would be canoe with rowing modification or sea kayak.
image.jpeg

The canoe would be second choice since it holds a cooler. Both offer much less windage. The canoe offers options to shift my butt around while I would have to complete several consecutive days in kayak before confirming my body would conform to extensive seating.

The drift boat weighs about 150 pounds, canoe about 70, and kayak around 45.

It also makes it easy to invite friends.

Ants
 
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