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Flipper rods sheared in two
http://www.hobie.com/au/en/forums/viewtopic.php?f=11&t=14800		 Page 1 of 1
Author:  Thomas [ Mon Sep 14, 2009 9:39 am ]
Post subject:  Flipper rods sheared in two
Well, it happened a few months ago. Now it's happened again! Yesterday I broke yet another mast rod for my Turbos. As with the first, the mast broke cleanly just inside the cam hole. This is double the trouble because not only do I have to replace the mast (no big deal) but also the cam because the remaining half inch of the rod is stuck tight in the hole. This is the set-screw model with the fairly recent double-notched rods.

In both cases the rods do not appear to have been bent before the break happened (though peddling sounded just a tad different minutes before the failure of the second). There's no defect evidence that I can detect within the rod's inner metal (such as rust or cavity). Both rod and cam sets are about a year old. Anybody else having problems with this?
Author:  mmiller [ Mon Sep 14, 2009 9:55 am ]
Post subject:  Re: Flipper rods sheared in two
It has happened a number of times on older drives. I have not heard of this with the V2 masts and sprockets.
Author:  Thomas [ Mon Sep 14, 2009 10:02 am ]
Post subject:  Re: Flipper rods sheared in two
I am a little confused regarding versions. Is V2 the new "screw-in" rod/cam system?
Author:  skua [ Mon Sep 14, 2009 12:02 pm ]
Post subject:  Re: Flipper rods sheared in two
Hi Thomas,

I've also had this ("only" once, that is), but I could get that last part out of the sprocket. I think in my case it was caused by the set screw backing out, giving the mast a little play in the sprocket. Pumping the drive long enough this seems to be enough to break the mast. Do you have the sprocket opening warped a little? I had that. I believe in that case it is useless to buy a new mast, for that will probably break once as well.

As Matt indicates, the newer V2 sprockets (with the screw in mast system), solve all that. I replaced my sprockets and the masts, and this problem is gone. I used Roadrunners excellent manual: viewtopic.php?f=60&t=12580. Check this for the details.
It may have been nice if this upgrade would be a free one for the turbo users. For I believe the set screw design is inadequate for the turbos. But that may be asking too much.

Good luck with the repair!
Author:  Thomas [ Mon Sep 14, 2009 5:11 pm ]
Post subject:  Re: Flipper rods sheared in two
Thanks for the advice!

I am going with the V2 sprockets/Rods kit in the '09 catalogue for my turbo equipped drive. I also want to upgrade my other standard fin drive as well to V2 sprockets/masts and Turbo Fins. Hobie has some interesting alternatives in how to do this (all in US Dollars)...

_______________________________________________________

PACKAGE A

72066001 V2 Turbo Fin Kit $90 x 1 = $90

81129001 V2 Sprocket $15 x 2 = $30

TOTAL: $120
_______________________________________________________


PACKAGE B

81129122 V2 Sprocket/Mast Kit $49 x 1 = $49

81192001 Turbo Fin Replacement $28 x 2 = $56

TOTAL: $105
_______________________________________________________

There's a $15 difference between A & B. Therefore I'm going with B if I can verify that the Turbo Fin Replacement (81192001) comes complete with all the "tensioner" hardware. Does anybody here know offhand if the tensioner hardware is included with the Turbo Fin Replacement part?

Thomas
Author:  mmiller [ Tue Sep 15, 2009 8:27 am ]
Post subject:  Re: Flipper rods sheared in two
The clew "tensioner" is included on every fin.
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