Broken Shaft Number 2...

[avdv@me.com]

Hey guys, G23 2016, less than 30 hours a season (we up in Canada eh)... second broken shaft / lost prop...Anyone else getting these issues? It seems crazy to me. How in the **** does this happen ... twice!!!

[wakerider107]

Yes, there's a long thread about this. Less cases with 2018 and newer most likely due to new shaft machining. Weird that it happened to you twice - the newer shafts have not been snapping like they were in 2016

[cptotr]

How long has it been since you replaced the shaft the first time?


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[GMLIII]

Hey guys, G23 2016, less than 30 hours a season (we up in Canada eh)... second broken shaft / lost prop...Anyone else getting these issues? It seems crazy to me. How in the **** does this happen ... twice!!!

Please post on broken shaft long thread so we can track your boat in addtion to other boats

[avdv@me.com]

How long has it been since you replaced the shaft the first time?


Sent from my iPhone using PLT Nautique

Probably 20 hours? 30 max? first one broken end of season 17, so we had essentially summer 18 on the new shaft...

[greggmck]

Probably 20 hours? 30 max? first one broken end of season 17, so we had essentially summer 18 on the new shaft...

In my opinion the reason for your two shaft failures was that the "new" shaft most likely came from inventory and is one of the shafts that has the defect too. The key way machining on the updated shafts does not extend to the strut like the one in your photos.

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[nyryan2001]

This stinks. I’m edging north of 800hrs on Gs... no broke shafts for me yet.

sorry you’re having to deal with this. Hopefully your dealer springs into action and you’re back on the water ASAP

[scottb7]

It's hard to say how many of the old stock shafts are good or bad. My 2014 G21 had the prop shaft break, and was replaced at 175 hours in July 2015. I now have over 500 hours with (knock wood) no failure. So obviously my replacement was from old stock.

I don't hardly surf, and although most have had good luck, I am kind of afraid to surf much, because it seems from the discussions that many on this site concluded that surfing is harder on the shaft.

[blueroom]

Personally, I think it is something more than the design/machining. I have a 2016 with the 550 engine and a 1" larger prop than stock. We surf 95% of the time and the boat is almost always loaded up with full factory ballast and 600 pounds of lead - even while cruising. If anyone is stressing a shaft I would think it was us. We even lost most of the connection to the transmission (Nautique used bolts that did not even extend past the nuts to connect the shaft to the transmission) and had the shaft vibrating around and wallowing out the cutlass bearing. The shaft was only held on by two bolts that were both about to come off. Probably minutes of use from disaster with shaft connection having one loose bolt in it and things completely flopping around.

Could be totally jinxing myself, but shaft has held just fine. It it were solely a matter of a bad overall shaft design, things would not seem so random. There has to be other variables at play - vendor, material, metallurgical, process, or even set up or assembly variance possibly. Who knows. The newer design may just eliminate those other variables from being a factor.