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Waterproofing electrics?

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Guest

Guest
Hi All,
I went to the boat show a few days ago, while I was there I picked up a few
brochures, as you do, but only got round to examining them today, one was
for 'Corrosion Block' the brochure was very interesting so I looked at their
web site http://www.corrosionblock.co.uk/ , the automotive page is not up &
running yet but on the motorbike page there is some interesting info, and it
seems it might be just the job for proofing the alternator and starter motor
when
I go through water, has anybody used or heard reports of this stuff?
TTFN
Chas
London UK '94 1HDT 80 Auto, 110000+ miles, Safari snorkel, Custom Winch
bumper & winch, + Ray Dadd Rocksliders
 
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Guest

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Chas
Never heard of that stuff but will ask my brother who's an Aircraft
Electrical Engineer.
Reading their website gives you the same brainwashed feeling you get
after watching 5 minutes of the shopping channel
Niall
 
G

Guest

Guest
Yes, after reading it again I know exactly what you mean, I would be
interested in hearing if your brother knows of it.
Chas
----- Original Message -----
From: "Niall __" <[Email address removed]>
To: <[Email address removed]>
Sent: Thursday, January 31, 2008 8:26 AM
Subject: Re: [ELCO] Waterproofing electrics?
 
G

Guest

Guest
Hi Chas,
Yes it does look useful and may help with the alternator contacts, however one of the problems with the starter motor (certainly the dead one you brought down to me) was that the water was getting in to the starter solenoid and then rotting everything inside.
The key with the starter is to keep the water out completely and I'm not sure if this will do the job properly. I have come across similar things in the past for sealing the HT leads on petrol engines and as soon as the protective layer is breached the water slides in underneath it and is held there doing more damage than if it just went on the component and was able to dry off.
Regards
Julian
Email: [Email address removed]
Mobile:=A0+44 (0)7971 540 362
 
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Guest

Guest
On Jan 31, 2008 8:39 AM, Julian A.R. Voelcker <[Email address removed]> wrote:
Hi Julian,
afaik, the starter motor has a vent which is like a piece of rubber
tube sticking out towards the ground, so sealing it tight is not an
option.
--
Rgds,
Roman (London, UK)
'92 HDJ80 (auto)
 
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Guest

Guest
Hi Roman,
Yes the factory starter does have a drain tube on it, which works well to keep the water out of the starter motor side of things whilst the solenoid is intended to be air/water tight.
Water can get in via the bell housing, it then has to fight through the gears and if it gets past it will drop into the starter and drain out of the bottom - the Toyota drain tube is more of a valve arrangement, letting water out but not in.
With the solenoid generally above the starter - if this is sealed water is unlikely to get up into it.
3rd party starters that I have seen tend not to have the drain tube, just a hole, which is why they tend to fail early - you can transfer the Toyota tube, but that sometimes doesn't fit that well.
Personally I would prefer to seal the unit up completely.
Regards
Julian
Email: [Email address removed]
Mobile:=A0+44 (0)7971 540 362
 
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Chas
Was just talking the my brother.
He said that they don't use that product or anything like it in the
hanger when servicing planes - anything from twin props to Air bus
He did say that there are loads of components that are water proof
for whatever reason but that most of them come from the parts shop
already fully sealed and or waterproofed.
Cheers
Niall
On 1/31/08, Chas <[Email address removed]> wrote:
I would be
 
G

Guest

Guest
On Feb 6, 2008 4:09 PM, Niall __ <[Email address removed]> wrote:
Hi,
Here's my 2pence:
In the Landcruiser, unlike some other best 4x4xFar vehicles, a
majority of sensitive OEM stuff works fine without extra
waterproofing.
For custom installations, the best waterproofing/dustproofing method
is using IP67 or IP68 rated parts like switches, relays, connectors,
sealed enclosures, etc.
Whatever is not available off the shelf can be encapsulated in epoxy
resin (potting compound). Also, printed circuit boards inside
non-sealable enclosures can be sprayed with Servisol Plastic Seal
protective coating.
It is worth remembering that draining water quickly off a component
(with the exception of salty water) leaves no lasting effect, whereas
a sealed starter motor that develops a leak will be ruined very
quickly.
--
Rgds,
Roman (London, UK)
'92 HDJ80 (auto)
 
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