Another oar question - Mountain Buzz
 



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Old 04-30-2013   #1
 
Redmond, Oregon
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Another oar question

Does anyone make a river oar where the blade is off-set?



Like the above example that is common on the Ganges River.
It is designed to keep more effective blade in the water.

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Old 04-30-2013   #2
 
Redmond, Oregon
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Someone does for sculling

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Old 04-30-2013   #3
 
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Quote:
Originally Posted by BilloutWest View Post
Does anyone make a river oar where the blade is off-set?



Like the above example that is common on the Ganges River.
It is designed to keep more effective blade in the water.
I've seen some Carlisles like that. No, wait a second. I think they were bent.
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Old 04-30-2013   #4
 
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by the way, if you want to get into kayaking I think I've seen a couple of rigs like that on the Clackamas....
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Old 04-30-2013   #5
 
Walterville, Oregon
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Somthing like the Sawyer Dynelite shoal cut? DYNELITE OAR BLADE
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Old 04-30-2013   #6
 
Redmond, Oregon
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Originally Posted by Wadeinthewater View Post
Somthing like the Sawyer Dynelite shoal cut? DYNELITE OAR BLADE
That doesn't look angled enough.

I'm thinking I instinctively prefer the shape of the Fat Smoothie on page 18:
http://etheses.bham.ac.uk/793/1/Coppell10PhD.pdf

Except without the Vortex generators bonded to the back surface of the tip.
Because we row both ways.

= = = = = = = =

Looking at the guy from India or someone in a scull, they are really low yet they use a shaped blade that maximizes contact with water while rowing at the least depth.

It seems that with our higher seats this overall blade shape is even more desirable. The one question would be the best compromise angle.

The angle of the blade upward would be difficult to do on a wood oar. Imparting the strength of the main shaft through the rib that continues down into the blade is obvious. Doing it at an angle would be ...... I don't think doable without aggressive laminations.

However with modern materials that could happen.
Obviously it has on Crew Oars has they put a good deal of force on those oars.

Ribs on both sides of the blades would provide some of the sculpting and add strength. The blade will need to be ambidextrous.
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