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Offline Painlesstom

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I will not be a victim of CRACK! (Update - Still Cracked....)
« on: September 26, 2014, 06:50:34 PM »
After seeing more than a few boats that had developed cracks around the wear ring housing in the hull, I discussed how I would reinforce that area to prevent it from happening. For those who have worked with 1/16th 6061, knows how tough the stuff is to bend and I am more than confident the pump is sufficiently supported now. I fear no crack no more!  :)

Update - Cracks still developed in the bottom left mounting screw molding hump into the intake tunnel. See Reply #15 of this thread for more info.
Tom

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Offline bizler

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Re: I will not be a victim of CRACK!
« Reply #1 on: September 26, 2014, 07:53:12 PM »
Looks like a really neat job the way you did it.  Apparently you didn't find it necessary to compensate for the 1/16" difference in length.  I'll have to take a look at mine and see if I think I need to do this.  I certainly don't want to experience the dreaded crack... ;)

Offline Painlesstom

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Re: I will not be a victim of CRACK!
« Reply #2 on: September 26, 2014, 08:14:10 PM »
Thanks, I'm very pleased with the finished result. I haven't checked the spline engagement yet, but I know I will at least have to shorten the hull bearing hose so the seal rides on the shaft again. It was right at the edge before. I think it would be an even better idea on yours, considering the extra weight you have on your steering nozzle. Bending the aluminum is a bit of a chore, but the peace of mind it will provide is priceless.   :)
Tom

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Offline Odie

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Re: I will not be a victim of CRACK!
« Reply #3 on: September 27, 2014, 06:25:46 AM »
Nice work. So the sides/bottom, tho not anchored help reduce flex within the plate?

Offline Painlesstom

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Re: I will not be a victim of CRACK!
« Reply #4 on: September 27, 2014, 08:47:33 AM »
Thanks. If you look at the pictures you will see the sides are bolted to the hull, I didn't feel the bottom needed any.. not much room inside to add the nuts and washers anyhow.
Tom

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Offline Hillbilly

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Re: I will not be a victim of CRACK!
« Reply #5 on: September 27, 2014, 09:18:37 AM »
Thanks, Tom...Even better than I expected. 

Offline bizler

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Re: I will not be a victim of CRACK!
« Reply #6 on: September 27, 2014, 12:24:18 PM »
Thanks, I'm very pleased with the finished result. I haven't checked the spline engagement yet, but I know I will at least have to shorten the hull bearing hose so the seal rides on the shaft again. It was right at the edge before. I think it would be an even better idea on yours, considering the extra weight you have on your steering nozzle. Bending the aluminum is a bit of a chore, but the peace of mind it will provide is priceless.   :)

Actually, I am not too worried about the weight of my reverse contributing to the propagation of a crack.  The unit weighs about 34 ounces to begin with and the bell on the plastic extension rests a mere .010" above the back of the hull. Any flexing of the bulkhead would close the gap, elinating the weight issue.  I think I'll just leave it as it is and see how it goes and hope that I don't open myself up to an "I told you so".

Offline Odie

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Re: I will not be a victim of CRACK!
« Reply #7 on: September 27, 2014, 01:57:46 PM »
There is a HF conveniently by the river landing I use. I usually stop in after a river run for expendables, etc... Noticed #98967 mixing board today walking down an isle on my way to check out. Highly polished 12x13" aluminum. Stiff and inflexible, definitely no more than 1/16th thick. $8.99 regular price. Maybe, just maybe...
« Last Edit: September 27, 2014, 02:00:50 PM by Odie »

Offline Painlesstom

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Re: I will not be a victim of CRACK!
« Reply #8 on: September 27, 2014, 02:47:03 PM »
Looks like that would work too, price is right for those near a HF store.
Tom

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Offline Odie

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Re: I will not be a victim of CRACK!
« Reply #9 on: September 27, 2014, 02:50:56 PM »
Did you scroll cut? What's the pump hole diameter?

Offline Painlesstom

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Re: I will not be a victim of CRACK!
« Reply #10 on: September 27, 2014, 02:54:00 PM »
Bandsaw for outside trimming, drilled multiple holes around perimeter of interior and jigsaw to get the rest. Then a grinding wheel and file to finish the hole to match the wear ring housing. I didn't measure the hole, but you can measure your housing to find out.
Tom

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Offline Odie

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Re: I will not be a victim of CRACK!
« Reply #11 on: September 27, 2014, 03:44:40 PM »
Thanks .

Offline papajohn

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Re: I will not be a victim of CRACK!
« Reply #12 on: September 29, 2014, 09:32:06 AM »
Tom will my 2008 need this fix ?
john

Offline Painlesstom

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Re: I will not be a victim of CRACK!
« Reply #13 on: September 29, 2014, 09:46:12 AM »
Hey John, any of the late hull models with the bolt on wear ring housing could benefit from this. It hasn't been determined if the cracking is something everyone will experience eventually (UPDATE: YES, All 08-12' models are at risk) , or if it was from trauma during an impact or improper tie down methods. I decided to lean toward the side of caution and reinforce mine before any problems did arise. Making the plate up is labor intensive and won't be for everyone, but for those who have the ability it would be worth it's weight. If you're ever planning a trip up this way again, we can plan to take a few hours and make one up for you if you like.
Tom

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Offline papajohn

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Re: I will not be a victim of CRACK!
« Reply #14 on: September 30, 2014, 10:58:52 AM »
Sounds good
thanks