skeg damage ...home repair

saltchuckmatt

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I was told not to use a grinder on the alum....puts impurities in the metal. Stainless steel brush only.

Crosby....I might have some Merc 7.5 parts for you. Let me check and I'll get back to you.
 

dingbat

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I was told not to use a grinder on the alum....puts impurities in the metal.
If welding....Poppy kock....lol

The primary purpose of keeping a good "puddle" is to remove the impurities from the base metal.

All bets are off if your talking about "soldering" aluminum.
 

oldboat1

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I've had good results using West System epoxy with their powdered aluminum filler -- for larger jobs, sheet aluminum attached with a combination of epoxy and rivets. Finish the build-up with JB weld or more of the thickened epoxy. Shape/sand, prime and paint.
 

saltchuckmatt

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If welding....Poppy kock....lol

The primary purpose of keeping a good "puddle" is to remove the impurities from the base metal.

All bets are off if your talking about "soldering" aluminum.
3 welders told me this....one a professional prop guy who is a close friend, my machine shop buddy who's an expert welder and a professional welder who works in the marine fishing industry and has 110 guys welding on his staff. No grinders.
 

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saltchuckmatt

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my grinder is a 4'' hand grinder with sand paper flaps ...no metal :)
Does your motor look like this? If so what parts do you need? Tim did me a hell of a favor and I think paying it forward would be a nice thing to do. Let me know what you need and just pay the shipping.
 

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Crosbyman

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see pics and my PM
skeg
transnom " bolt"
the "tilt troll lock" is busted it is plastic but removing it entails a big job
1699579933822.png
 

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saltchuckmatt

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Race boat pictures that I couldn't send in the pm platform for whatever reason.
 

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dingbat

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3 welders told me this....one a professional prop guy who is a close friend, my machine shop buddy who's an expert welder and a professional welder who works in the marine fishing industry and has 110 guys welding on his staff. No grinders.
That warning is a kin to the "do not use Teflon tape" on fuel connections.
Its a competency/skill issue, not an application problem

Unfortunately, "Professional" means nothing anymore other than you're paid to do a job anymore. Most are what we called "rod burners" back in the day.

The state of the Trades industry is abominable. Nine out of ten fabrication shops I interview to qualify to do fabrication work for our company don't have a single professionally trained or certified welder on staff.

The sad part is that most of the tricks of the trade (fit and finishing) that where pasted down to me during my apprenticeship have long since been forgotten. Have only met few who even know what a spark test is, let alone be able to pass one.

I'll get off my soap box now.

No grinders......lol

 

racerone

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Where I worked at one time they use wax on grinding wheels to prevent aluminum from loading up the wheel.----This was often on precision aluminum parts to fine tune finished dimensions
 

saltchuckmatt

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That warning is a kin to the "do not use Teflon tape" on fuel connections.
Its a competency/skill issue, not an application problem

Unfortunately, "Professional" means nothing anymore other than you're paid to do a job anymore. Most are what we called "rod burners" back in the day.

The state of the Trades industry is abominable. Nine out of ten fabrication shops I interview to qualify to do fabrication work for our company don't have a single professionally trained or certified welder on staff.

The sad part is that most of the tricks of the trade (fit and finishing) that where pasted down to me during my apprenticeship have long since been forgotten. Have only met few who even know what a spark test is, let alone be able to pass one.

I'll get off my soap box now.

No grinders......lol

All tradesman above are old school guys. Prop guy (still a hand banger) is 65.....machine shop guy is 70 and it's his grandfather's old shop and my maritime welder buddy 63.

They all said the same thing. Stainless steel wire brush.

I'm sticking with them thanks
 

tphoyt

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They make grinding wheels now just for aluminum. They have oil in them to help from loading up. A good scrub with acetone with remove the oils.
 

dingbat

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They make grinding wheels now just for aluminum. They have oil in them to help from loading up.
That beats old school....
30wt. in a squirt bottle and bibs in an attempt to keep the stuff off your clothes.
A good scrub with acetone with remove the oils.
I've always used Weld-o.
Ironically one of it's selling points: Time-saving process, as it eliminates the need for wire brushes.
 
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saltchuckmatt

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So Crosby....here you go.
 

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Crosbyman

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update on the 75hp skeg job....

I know it is a cheap fix but.... I prepped the edges clean and rebuilt the skeg tip with JB weld steel epoxy..putty & since the skeg isn't goint to be touching ground anytime like a small OB would.... it should hold .

the stuff is rock solid and I am confident it will survive my short summer runs...

here is a picture...not perfect but will be..... after a grind and paint job with ETEC Evinrude Blue
 

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