Sweep boat design & questions - Mountain Buzz
 



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Old 02-27-2011   #1
 
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Sweep boat design & questions

I'm thinking about building a sweep using a 20ft oval boat. Building a frame using alum tubing and speed rail fitting. It would be modular so I could take the sweeps off and run it like a conventsional raft. I'm looking for pictures and demensions of frames, oar locks, oars size of sweeps, how big the rowing platform needs to be etc. Any personal knowledge if someone has built one of these themselves would be helpful.

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Old 02-28-2011   #2
 
Palisade, Colorado
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try the Idaho Whitewater group...more sweeps up in them parts, not so much down here.
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Old 02-28-2011   #3
 
Walterville, Oregon
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I've built two, one using a 14.5ft raft and the other on 20ft x 30in cat tubes. A 20ft round boat seems too big for a personal sweep. Other than the Middle Fork Salmon, where do you plan to run it?
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Old 02-28-2011   #4
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Quote:
Originally Posted by Wadeinthewater View Post
I've built two, one using a 14.5ft raft and the other on 20ft x 30in cat tubes. A 20ft round boat seems too big for a personal sweep. Other than the Middle Fork Salmon, where do you plan to run it?
They first ran on the Main Salmon and still do. Sometimes with a motor.

I have run a few. A Firestone 20 or 22 and a Maravia Chewbasco 20 footer?? or something like that. We called it Chewy.

The Firestone was the better sweep with larger tubes. It also weighed about 500 lbs just for the rubber. The Chewy we ran as a second sweep in low water and a couple of times on training trips as an oar boat. T

There were two completely different frames in play. The sweep blades were about three to three and a half feet long, inch wide and about a foot tall.

I didn't want anything in the row zone at all. That is the three or four foot zone that you dance around on in the middle of the boat. You could probably put something small up against the cowling but I like it pretty open in case something goes awry.
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Old 02-28-2011   #5
 
Cisco, Utah
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This is a sporty rig...
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Old 02-28-2011   #6
 
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Where do you hope to use it? I've heard they are pretty much unnavigable unless you have some real gradient, i.e. they'd be useless on a desert river like the green or CO.
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Old 02-28-2011   #7
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Where do you hope to use it? I've heard they are pretty much unnavigable unless you have some real gradient, i.e. they'd be useless on a desert river like the green or CO.
Hey Dave - hope you are healing up.

The pic above is Glen and Bessie Hyde in the Grand Canyon. They were used a lot on the Main Salmon. Which is where the Hydes came from.

I haven't heard of too many other places where they are used. What really kills you in a sweep is the amount of "sail" above the water line. IE - they suck in the wind. Turn 'em sideways and push 20 to 25 feet sideways down the river. Even with the leverage of a really long oar it still sucks.

I really want one for the MF, not to carry gear but because they are a hoot to run.
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Old 03-01-2011   #8
 
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I've seen them on the McKenzie and Rogue too. I think I have some photos of our interior frame, skirt frame, and sweeps... will post them if I find them.
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Old 03-01-2011   #9
 
Walterville, Oregon
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I really want one for the MF, not to carry gear but because they are a hoot to run.
A sweep boat certainly makes low water on the Middle Fork more interesting than in a boat with oars.

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I've seen them on the McKenzie and Rogue too.
There used to be commercial day trips on the upper McKenzie. You can pack a lot of passengers on a sweep.

Rogue as in the wilderness run? The cut at Blossom would be interesting. Huggins and Flora Dell might slow you down a bit.

A sweep boat would work well on the Wallowa/Grande Ronde (continuous gradient @ 22ft/mi).
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Old 03-01-2011   #10
 
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yep, on the wilderness run. I'm sure getting through some of the flats would be a pain.
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