Boat Building Forum

Find advice on all aspects of building your own kayak, canoe or any lightweight boats

Re: Paddle: PADDLE SHAFT STRENGTH TESTS
By:Gene
Date: 5/6/2013, 9:28 am
In Response To: Re: Paddle: PADDLE SHAFT STRENGTH TESTS (Mike Savage)

analysis may require 4 joined equations relevant to an aluminum tube.

search to calculator online metals or choose from tubing strength calculators. Online metals calculator suggets no aluminum tube of 1" diameter supports weights above 5-10 pounds which is not empirically true given use of an AquaBound.

a clue is where are the forces in paddling ? not to the weak joint from blade but from blade to hand to joint with force coming from the swinging weight of the free airborne blade.

Joint strength is primary in re entry, but not in paddling thus we get weak joints. Question is: are weak joints dysfunctional after looking over energy lost gained over time or potential re entry or other quality issues randomly experienced.

Messages In This Thread

Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 4/27/2013, 8:49 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
JohnAbercrombie -- 4/27/2013, 12:23 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 4/27/2013, 8:20 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Mike Savage -- 4/28/2013, 6:42 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Brian Nystrom -- 4/29/2013, 6:39 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 4/29/2013, 9:06 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Brian Nystrom -- 5/1/2013, 7:17 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
risto -- 4/29/2013, 3:37 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 4/30/2013, 10:24 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Bill Hamm -- 5/1/2013, 1:42 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 5/1/2013, 7:12 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Bill Hamm -- 5/2/2013, 10:05 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 5/2/2013, 12:07 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Mike Savage -- 5/2/2013, 1:49 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Mark Vander Horck -- 5/2/2013, 2:13 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 5/4/2013, 11:43 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 5/6/2013, 9:28 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Mike Savage -- 5/6/2013, 2:28 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 5/6/2013, 7:37 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Roy Martin -- 5/6/2013, 7:51 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Bill Hamm -- 5/7/2013, 1:26 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Etienne Muller -- 5/7/2013, 4:00 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 5/7/2013, 8:03 am
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Mike Savage -- 5/7/2013, 2:24 pm
Re: Paddle: PADDLE SHAFT STRENGTH TESTS
Gene -- 5/7/2013, 7:52 pm