Oar length

Here's the place if you've got something to ask about the world's best, and bestselling, oars.
Post Reply
Nosmo
10k Poster
Posts: 1595
Joined: November 21st, 2006, 3:39 pm

Oar length

Post by Nosmo » June 18th, 2010, 4:48 pm

How should the length of an oar change depending on Blade type?

Specifically:
medium Macon vs Large Macon (Since they are so similar seems like one would just change the outboard by the ratio of the areas but that comes out to about 10 cm!)
Large Macon vs Smoothie2
Big Blade vs Smoothie2
Smoothie2 vs Smoothie Vortex

(C2 says Fat 2 is 5-6 cm smaller then a Standard Smoothie)

User avatar
bloomp
10k Poster
Posts: 1126
Joined: November 28th, 2007, 5:37 pm
Location: Storrs, CT

Re: Oar length

Post by bloomp » June 18th, 2010, 8:46 pm

I believe that the change is already made. The point of hatchet oars is to have a shorter shaft but still provide the same ability to grab water. I think they're like 10cm shorter than Macons, but between Macon blades I don't know the difference. I just learned the above from Ric Ricci at Craftsbury, so maybe he'll respond with the right info if you email him... But usually you just decrease the outboard as the surface area of the blade increases. Especially important with smaller, younger crews is to not give them any extra strain because of a huge outside arc.
24, 166lbs, 5'9
Image

Nosmo
10k Poster
Posts: 1595
Joined: November 21st, 2006, 3:39 pm

Re: Oar length

Post by Nosmo » June 18th, 2010, 9:39 pm

I'm just trying to compare various oars without having to experiment too much.
If I'm used to 287 smoothies and want to use the Macons should I pick up the 293 medium macons, the 296 medium macons or the 306 large macons. I have similar choices for the big blades.
(OK, I know the 306's are too long just because of who bought them). I like the 293s best but I think that is because the collar is warn out on the 296s.

Nosmo
10k Poster
Posts: 1595
Joined: November 21st, 2006, 3:39 pm

Re: Oar length

Post by Nosmo » June 25th, 2010, 8:52 pm

To answer my own question:
Besides the limited info here: http://www.concept2.com/us/oars/selection/oarlength.asp
Some on the phone at C2 Says the Large macon is about 10 cm longer then Smoothies. The Smoothie1, Smoothie2plain and Smoothie2vortex are about the same, and the Fat2 are 5-6 cm shorter then the Smoothies. (they gave the impression --or rather I got the impression--that these are only rough numbers)

Others people have told me smoothies should be 10-12 cm shorter then the Macons.

Another answer here:
http://www.biorow.com/RigChart.aspx
Plugging numbers for me (and fixing the span/inboard), this site says the Macon is about 10cm longer then the Big Blade, the Smoothie2plain is 2cm shorter then that, the smoothie2vortex is 1.5cm shorter yet, and the Fat2 is an additional 5cm shorter yet.
It looks like there is a bug in the app--only use for open rowers not for Juniors or under 23. I sent a email off to
the author but no reposne yet. See:www.rowingillustrated.com/boards/viewto ... 6&start=21 for my comments about the bug

These all seem close enough to be consistent.
Still don't know about the med vs large Macon's.
Didn't C2 also make a Fat1? I think my club has a couple of pairs.

.

Post Reply