Are these Aluminium Duo Props Repairable?

[Lioness]

Hi,
I'm in the middle of some annual drive maintenance and the props have suffered some electrolysis as you can see from the attached pics. I think these props are very repairable, so sent them to a well know prop shop. Their response is that two are write offs and two are a best repair possible. I am shocked by this response and would value other opinions. Do you agree with this response?

 

[jimmy_the_builder]

Isn't your best course of action here to just get a second opinion from another propeller repairer eg Hamble Propellors, Steel Developments etc?

 

[Chris_d]

I've had much worse than those repaired, half blades missing sometimes.
Mine are the same duoprops and I used www.streamlinedpropellers.co.uk/

 

[Portofino]

Why did the anodes fail to protect ?
That may be interesting for others in a kinda show n tell ---- learning .

 

[Elessar]

Hi,
I'm in the middle of some annual drive maintenance and the props have suffered some electrolysis as you can see from the attached pics. I think these props are very repairable, so sent them to a well know prop shop. Their response is that two are write offs and two are a best repair possible. I am shocked by this response and would value other opinions. Do you agree with this response?View attachment 64376View attachment 64377View attachment 64378View attachment 64379View attachment 64380

I've used steel developments a few times but they say they can't fix corrosion damage. They did a best endeavors on my bronze ones last year, but the faces still had roughness and cavitation like pits. So 2017 was planned for new props.

So this year I went to Fal propellors http://falpropellers.co.uk/ - I asked them for new and they offered to repair the old - and no one can believe the repaired props aren't brand new. They really do look brand new, perfect and balanced. Very pleased.

 

[CLB]

I've had much worse than those repaired, half blades missing sometimes.
Mine are the same duoprops and I used www.streamlinedpropellers.co.uk/

Damaged props can be repaired, even with blades missing. Corroded props can be weakened to a point that repair is not possible, despite minimal visual damage.

 

[jimmy_the_builder]

I've used steel developments a few times but they say they can't fix corrosion damage. They did a best endeavors on my bronze ones last year, but the faces still had roughness and cavitation like pits. So 2017 was planned for new props.

So this year I went to Fal propellors http://falpropellers.co.uk/ - I asked them for new and they offered to repair the old - and no one can believe the repaired props aren't brand new. They really do look brand new, perfect and balanced. Very pleased.

That's a good recommendation, thanks. I've just emailed them to ask if they can repair/rebush VP Nibral props.

 

[Lioness]

Thank you for all of your replies.
Elessar may have hit the nail on the head and thanks for the prop shop recommendation.
I have sent these props off to http://www.castlemarine.co.uk/ who have repaired props in a far worse state of corrosion than these for me in the past.
Don't ask me why I did not just stick with them. Lesson Learnt.
I will post pictures of these props on return for information purposes.
Thanks again

 

[Elessar]

found before and after pics.

Before you point out the obvious, I have now fitted a traditional round anode rather than the old hexagnal one.......

Note the hub on the refurb is the only bit that betrays its provenance.