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Thread: G23 Prop Fell Off .....

  1. #1
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    Default G23 Prop Fell Off .....

    Funny story ...

    I frequent this discussion board and read about the G23 with 550HP motor prop shaft issue as it happened to another member months ago and mentioned it to my dealer when they had my boat for a month to finish up warranty work back in June. They said they had checked the bulletin and everything was good on my boat .... Apparently they were wrong ....

    Two days ago I was out on the big lake for a cruise and on our way home noticed some slight vibrations traveling at cruising speed of 45 km/hr. I thought it was odd so I stopped and hopped into the water, checked on the prop/rudder noticing no damage, seaweed or anything else of concern. We then continued and the vibrations slowly got worse and I continually was decreasing my speed to avoid damage. I got under the boat 2 more times to check on everything, I had no clue what it was but the prop nut was on tight with the cotter pin still installed and I could not see anything of concern. It got to a point where I was traveling just off idle (about 12 km/hr) because anything above the vibrations were so bad the steering wheel was shaking. Keep in mind at cruising speed we were probably 1.5 hours from home.

    Without warning at such a slow speed we heard a *tink* noise and the engine RPMs increased.... I pulled back the throttle and shut the engine off. Knowing exactly what had happened I went under the boat again to verify, and behold no propeller.... Great.

    I am not sure if anyone has towed a G23, but it is a beast. it took us 6 hours from that point to get home. I am not very happy, especially since I am very keen on the operation/maintenance of my boat and brought up this exact issue with my dealer to ensure we were not left stranded.

    We got the boat last year in august around this time and it only has 57.7 hours on it.

    I measured the prop shaft and it is 1-1/8" diameter. I have the XS550 motor, and from what I remember the issue was that the shaft needed to be thicker? I was wondering if anyone can comment/knows what the issue actually is? I am very keen on getting my boat fixed and back on the water ASAP.

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  2. #2
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    Holy Crap. Sorry to hear about that.... 550 or 450 motor??
    2014 G23 550
    2013 G23 450
    2011 Malibu Wakesetter 247
    2007 Yamaha AR210

  3. #3
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    Sorry to hear about that. Hopefully they fix it asap for you!
    2014 SAN G23 - XR 550 (current)
    2013 SAN G23 - XS 550
    2013 SAN G23 - ZR 450
    2000 XStar - LTR 330

    www.mnspringride.com

  4. #4
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    Sorry to hear this! Glad you got back safe and didn't get stranded in the middle of a big lake. Hopefully you can get it back on the water quickly.

    As for the shaft size, I know CC has been using 1 1/8" shafts on their v-drives since at least the mid 90's. If the service bulletin was to put a thicker shaft on then it sounds like your dealer was not being very truthful. I think there might have been some information about shaft thickness in the Yeargin interview on the main page.
    Shawn

    1999 Black and Tan Python Powered 210

  5. #5
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    Quote Originally Posted by nyryan2001 View Post
    Holy Crap. Sorry to hear about that.... 550 or 450 motor??
    XS550 Engine

  6. #6
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    Wow, sheared right off. This is a huge issue.
    Now
    2000 SAN

    Previously
    1999 Air Nautique
    1996 Tige Pre-2000
    1989 Lowe 24' Pontoon / Johnson 100HP outboard

  7. #7

    Default

    Wow. You are safe, that's the most important thing. Your dealer and or Correct Craft should cover all repair and towing expenses.

    Just sucks to have a boat like that and get stranded.
    Boat - 2005 Team 226 -ZR6 - Several Acme Prop's (1234, 644, 1160) Depending on occassion
    Tow Rig - 2008 Chevy Silverado - Duramax Diesel - Crew Cab

  8. #8

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    I know that people say that G23s and snapped prop shafts are blowing anecdotal evidence out of proportion, but I spend way too much time on the interwebs and I can't remember reading of any other new boats doing this. I'm pretty sure there are at least 4 separate documented cases that I can think of related to the Gs in the past year. A small number, and pretty bad coincidental luck, if there isn't a problem.

  9. #9
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    ^^^ upgraded 1.25" shafts on all 2014s+. 4... lets say an even 10 failed propshafts on nearly 900 2013 Gs.
    2014 G23 550
    2013 G23 450
    2011 Malibu Wakesetter 247
    2007 Yamaha AR210

  10. #10
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    Here was the info I was looking for earlier (http://www.planetnautique.com/vb3/sh...hlight=shaft):

    Quote Originally Posted by Greg Meloon

    I was reading the discussion following the interview and believe there was some confusion on the new G Series gear ratio. The reduction gear is applied in the V-drive and not the transmission. The 2:1 ratio in the 2014 G Series is applied with the ZR409 and ZR450. The higher gear reduction ratio increases torque at the propeller shaft and requires the 1.25" propeller shaft also used with the XR550 and XS550. Additionally, the 1.25" propeller shaft for all 2014 applications uses 1.25" bore at the propeller instead of the machined 1.125" bore at the propeller on 2013 Model Year XR550 and XS550 applications. This changes the propeller specification for all 2014 Model Year G Series boats.
    Shawn

    1999 Black and Tan Python Powered 210

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