Cavity Plate

neil.mccrirrick · 04 April 2009, 14:01

Following on from my port list problem, I've just taken the hydrofoils off and found this.

Question.

Do you think this will cause a problem, left like this, and if so best way to fix it?

I could take the engine back as I''ve just bought it, but its a long haul as it was from Oban. Or could I cut the hydrofoils down, or just leave them on?

Thanks

PeterM · 04 April 2009, 15:50

How the hell did anyone do that ! ? Its not even like the break runs to/ from the holes !

I'd guess the foils were added to hide it & may not really be needed . Not sure what affect it would have - but I'd not cut down the foils myself. I guess if you test run it to see you'd find out , but guess some prop/ engine guru will be along to help shorlty .

Doug Stormforce · 04 April 2009, 16:42

Take it back to the lying git that tried to cover it up with the foils. There is no way this is coincidence. The foils were there to cover this up.

BruceB · 04 April 2009, 17:00

I think with the prop state and the damage to the anti cavitaion plate that it is fairly certain this has hit something pretty hard at some point, maybe more than once!
I would be slightly worried about the state of the rest of the leg, is it oiltight and are all the bolts and holes holding it together looking OK?

Heart-trouble · 04 April 2009, 17:06

any reason for hydrofoils on an outboard? cant say i've seen any before!
the damage to your plate there looks bad, it will probably cause air to get to the prop when your on the plane, slow you down and make you use more fuel. then again i could be wrong!

K&S · 04 April 2009, 17:33

Oh dear, oh dear!
My guess, as others have said, the foils were definately added to improve performance as a big chunck of an Important part of the leg is missing.

Best of luck trying to recover your money.
I think, happy to be proved wrong, if you had a chance to inspect the motor prior to parting with cash then you may have a hard fight on your hands.
Very best of luck!

K&S · 04 April 2009, 17:39

Quote:

Originally Posted by Heart-trouble

any reason for hydrofoils on an outboard? cant say i've seen any before!

Used to be very popular on Fletchers and the like.
Usefull / Used for underpowered ski boats.

(Unless you mean hydrofoils, bow and stern mounted variety.)

wavelength · 04 April 2009, 17:41

is that your 70hp? I've seen one just like that before. Caused, we found, by a guy trying to split a stuck bottom unit from the leg and hammering at the plate - silly b*****

JSP · 04 April 2009, 18:03

Oh what a bunt! At a guess I'd agree with Dave. Be a bit hard to do that damage with out the rest of the plate getting wellied by the outboard hitting something wouldn't it? Looks like someones been giving it a fair old whack.

I don't mind taking it back with you Neil if you have too.

BruceB · 04 April 2009, 18:12

It could be grounding damage as well, if it had been on the other side of the plate it could very well have been rocks and kelp picked up by the prop.
I hadn't thought of anybody taking a hammer directly to the plate but then again I find it hard to believe anybody is THAT stoopid!
Who did you buy it from?

SeaSkills · 04 April 2009, 18:26

Quote:

Originally Posted by K&S

Oh dear, oh dear!
My guess, as others have said, the foils were definately added to improve performance as a big chunck of an Important part of the leg is missing.

Best of luck trying to recover your money.
I think, happy to be proved wrong, if you had a chance to inspect the motor prior to parting with cash then you may have a hard fight on your hands.
Very best of luck!

I'm afraid this is probably the reality. If it was a private seller rather than a business it would be harder to get recompense (Buyer Beware and all that).

Hard to tell from the pics, but from what we can see I'd guess that those who've surmised this was a bit of a heavy handed attempt to shift the gearbox are probably right and more likely than damage from grounding. If the engine runs OK, and unless there's a good reason not to, I think your best option may be to put the foils back on.

K&S · 04 April 2009, 18:27

Quote:

Originally Posted by BruceB

It could be grounding damage as well, if it had been on the other side of the plate it could very well have been rocks and kelp picked up by the prop.

Unless it was prop going in reverse

Other photos show paint stripped from skeg, and a chunk missing from prop so its still possible?

Although my money is on the hammer

K&S · 04 April 2009, 18:30

Quote:

Originally Posted by SeaSkills

If the engine runs OK, and unless there's a good reason not to, I think your best option may be to put the foils back on.

Mag to Grid ?
Surely not sugesting it becomes someone else's problem ?
Thank goodnes im not in the market for a motor just now

Rogue Wave · 04 April 2009, 18:34

http://cgi.ebay.co.uk/QUICKSTEEL-Qui...3A2|240%3A1318

I'd leave the doel fins off,they are going to put a strain on a much depleted part of your motor. I also wouldn't be surprised if this was hit by a concrete gate post or similar.

If you can get your money back, or some of it! The repair isn't too difficult use this stuff and drill some holes for fitting a few rods across the gap as rebars for the putty sand and prime and paint if you do a good job aof the sanding and painting stage you won't be able to see the fix

http://www.imsupplies.co.uk/home.php?cat=198

codprawn · 04 April 2009, 19:08

I would get a good welder to repair it properly if possible.

Hightower · 04 April 2009, 19:55

First thing I would do is to get an indipendent assesment of the lower leg. You want to be sure of your facts and everything that is wrong if you're going back to the seller. At least you'll find out how much it's going to cost you to sort out and how much you want in compensation.

bedajim · 05 April 2009, 06:37

You could get a bit of aluminium plate shape it to match the Cavity plate and bolt it on the under side using the fin holes, you may need to make it in two halves, then fill the hole and paint to make it look good

neil.mccrirrick · 05 April 2009, 09:59

Quote:

Originally Posted by JSP

Oh what a bunt! At a guess I'd agree with Dave. Be a bit hard to do that damage with out the rest of the plate getting wellied by the outboard hitting something wouldn't it? Looks like someones been giving it a fair old whack.

I don't mind taking it back with you Neil if you have too.

Cheers John, I suspect its because its been hit with a hammer, I've mailed the bloke the photos, so I'll see what story he comes back with.

I took it out while I was in Oban, forward and reverse gears were fine. The rest of the leg looks Ok too.

I think its been hit with a hammer, I'll get a quote for welding it and if that's a fortune see about taking it back.

He did give me a new prop with the sale, so at least one bit of the damage is covered.

neil.mccrirrick · 05 April 2009, 10:01

Quote:

Originally Posted by BruceB

It could be grounding damage as well, if it had been on the other side of the plate it could very well have been rocks and kelp picked up by the prop.
I hadn't thought of anybody taking a hammer directly to the plate but then again I find it hard to believe anybody is THAT stoopid!
Who did you buy it from?

Hi Bruce, came from a chap in Oban that lives on Kerrera, it was advertised on Boats and Outboards,

jyasaki · 05 April 2009, 22:49

Quote:

Originally Posted by codprawn

I would get a good welder to repair it properly if possible.

You'd need to remove the leg and disassemble completely to weld it up. And be damn careful that things don't warp.

Had a friend who broke the skeg off a new Suzuki motor; he had a muffler guy weld it back on a grind it smooth. Next trip out the gearbox disintegrated due to water ingress through melted seals. Luckily for him, Suzuki decided to cover it under warranty, despite the "remove shoe, shoot foot" procedure that got him there.

Personally, if I was going to effect a repair, I'd use a steel putty type epoxy, and fair it out a bit along the remaining plate. It's not going to hold against a lot of load or anything; it's just there to isolate the prop from the surface.

jky