prop repair , electrolysis

[cloud7]

can members help me on this one , i have a few small pin head holes on one of the blades
on duo props, advice i am getting is this cannot be repaired because on start of electrolysis,
any help on this one , boat is in scotland

cheers

 

[Morpheous]

Mine couldn't be repaired either, but had gone worse than just pin holes, mine had actual holes. I fixed (eventually) the electrolysis problem and bought a new set, had to go aftermarket though sadly. The old ones make nice garden ornaments if its any consolation.

 

[Ripster]

Might be worth talking to Steel Developments or Hamble propellers - they are experts in props.

Good luck.

 

[rafiki_]

Another vote for Steel Developments. Have a quick Google and you will find them. They have repaired my props a couple of times, and done an excellent job. They will not let a few pin holes get in the way of a repair. Circa £50 per prop inc packaging.

 

[phale]

prop repairs

send them to alan at 8 the close brixham devon he will do agreat job just had mine done briliant.

 

[Bojangles]

Take them (or post) to Clyde Propellors at Rothesay Dock in Clydebank, Glasgow. They will let you know if they're fixable. http://www.propeller-repair.co.uk/SV-OVERVIEW.html

 

[Scubadoo]

What I have done before when I used to get pin holes, is sand them back to bare metal and epoxy them (4 coats) with antifouling on top, never had a problem since doing that. The reason I think your getting pin holes is the paint has flaked off.

You can get many more years out of a prop with pin holes.

 

[Carols]

The impotance of anodes

We have had the same problem with our props and shafts and have since learned it is all about quality of the anodes.
Our bill is standing at the moment £12,000!!
If the previous owner had just spent a few hundred pounds on anodes we would not be spending this now

 

[coreng]

To repair props you need experts in props, but to avoid doing it every year you need experts in corrosion.

Actually, there is a way to know if your anodes are working or not and if your boat is attacked by stray currents. It's hull/equipment potential measurement. Nearly as simple as tyres pressure on your cars. It's common in naval and pipe-line industry and widely unknown in pleasure crafts one (I've been reading nearly every post about anodes and corrosion on these forums). Big boats can't afford to change propellers every year...

Measuring potential is essential in surveying because it's made afloat (no need to dive) and alerts at once, before dramatical situations occurs. It should'nt fail...