Gear repair

[Janger]

I’ve got a buddy with a broken gear from a boat drive train. This is 1.25” in diameter. Replacements are quite pricey. Anybody able to fix this with bronze or make a new one?

 

[kylemp]

Define "pricey"...

 

[Janger]

$500

 

[kylemp]

That's an awfully complicated gear. I had alpek make one for my lathe, he could try there and see what they say.

 

[John Conroy]

I suspect the gear in mesh with that one is pooched too. Spiral/bevel or mabe even hypoid so it would be very hard to duplicate with enough accuracy without using dedicated gear making tooling. Your friend probably already knows that a boat is just a hole in the water you pour money into so he will probably have to bite the bullet and buy the pair.

 

[Janger]

Ah...

 

[ducdon]

If it's available as a manufactured part it will be cheaper than having on repaired or custom made.

 

[Brent H]

Hi John,

I would think that gear has hardened teeth given it is part of the main drive. I would always be wary that a repair failure might destroy more of the drive.

Make sure your friend also checks the meshing gear for damage and the shaft for any twist/bend.

Anytine you put “marine” or “boat” in front of anything the price seems to magically double .....

 

[Crankit]

Was it originally chrome plated?