Prop stuff

[J Neeves]

Based on Vyv's experience, and posted some time ago, a couple of months, we have just applied Velox, 3 coats only - no mention of 4 coats on instructions here. I had recalled suggestion that Hammerite was the way to go so rang them here and they said not suitable for underwater application (but maybe we do not have the range available in Europe).

So we have Velox, 3 coats, over Velox primer on 2 x saildrives and the rubber valance for each. We have Velox on one prop and PropGold (available in Europe)(and similar to PropSpeed, but said to be tougher) on the other prop. Everyone suggests the trick is in the preparation - and the instructions are clear for both products.

We only have white Velox here, will show growth easily.

We will not know if we can match Vyv's success for 12 months - but I guess another similar thread will surface then

Jonathan

 

[DJE]

Thanks for your replies. I may try the Hammerite primer. I guess no one has come across or used the indelible pen solution then !!!

Tried it a couple of times over a very highly polished prop (mirror finish). Results were a bit better than the polishing alone but most of the ink wore off over one season. You need a huge marker pen to get a decent coverage though.

 

[vyv_cox]

I only used the Hammerite primer because I had a full tin of it and it seemed worth a try. Has proved to be very successful.

 

[J Neeves]

I only used the Hammerite primer because I had a full tin of it and it seemed worth a try. Has proved to be very successful.

You had mentioned success and I did wonder if the Hammerite people actually knew, or had any experience of its use, under water. But I was in for as risk free an application as possible and the Velox paint and primer came from the same place.

Having checked I note its active ingredient (the top coat) is the same as in dandruff shampoo and its, the active ingredient, been around since the 1930's.

I'll be really grateful if we can get as good a result as you!

Jonathan

 

[vyv_cox]

I think that a few months ago someone on the forums contacted Hammerite, who told him that the special metals primer was not suitable for underwater use. I imagine they were just being careful and had never tried it. In addition to the small areas on the shaft I put a square about 12 cm square on the keel to test its antifouling properties. A/F was no good but the paint appeared perfect at the end of the season.

 

[Poignard]

I think that a few months ago someone on the forums contacted Hammerite, who told him that the special metals primer was not suitable for underwater use. I imagine they were just being careful and had never tried it.

I asked Sandtex about using masonary paint as non-slip deck paint. Not suitable, I was told. I think tthe many YBW Forum posters who say they use it would disagree!

As you say, it's probably just the manufacturer never having considered the possibility and being reluctant to approve it.