blacking in cold weather

[Rickent]

My boat is booked to come out this week for blacking, the weather forecast for this week is for increasingly cold weather with overnight frost. The dry dock is covered but am thinking of putting it off until May when the weather is milder.

Is this a wise move or should I go ahead and do it this week.

[Alan de Enfield]

Most reputable companies will not Black before about end April, and rarely after October, due to non-adhesion onto cold metal, and the problems of applying it due to the 'thickness' of the blacking

Your choice but I would cancel your current booking

[Rickent]

Cheers Alan, I am thinking that way. If the weather forecast was for mild weather, say 10deg+ I probably would go ahead next week but it is going to be cold.

[OldGoat]

Eve the "modified" bituminous stuff is a pig to apply when slightly warm. Get a really warm day and a bit  of sunshine and the stuff goes on like a dream.... 

[Sea Dog]

I agree that you should put it off. If the steel feels cold to the touch, it's too cold to black it and (unless something quite unexpected happens with the weather) once BST ends, that's probably gonna be the case until the spring in most years.

[Richard10002]

Put it off - not only is it cold, it's also damp!!

[dor]

Condensation will also be a problem in this sort of cold damp weather.  As it can be in the summer if there are some rapid changes in temperature.

[Rickent]

My mind is now made up, will cancel and look to get it done in May when the temp should be a lot better.

[Alan de Enfield]

38 minutes ago, Rickent said:

My mind is now made up, will cancel and look to get it done in May when the temp should be a lot better.

You know it makes sense.

[Bloomsberry]

Can you cancel though ?  It's very short notice and I'd have thought you'd at least lose a deposit ?

[Rickent]

Not paid anything up front and can't imagine there would be a long line of people waiting to use it this time of year. Will still use them when I re book anyway so don't think it will be a problem.

[Tim Lewis]

3 hours ago, Rickent said:

My mind is now made up, will cancel and look to get it done in May when the temp should be a lot better.

I assume then that your dock was not enclosed. Our club (Aylesbury Canal Society - Circus Fields Basin) has an fully enclosed and heated slipway/dock that allows blacking all year round:

http://aylesburycanal.org.uk/our-services/slipway-dry-dock/

Tim

[Rickent]

No, it is covered but not enclosed. That heated slipway looks great.

[matty40s]

Kathy was booked in the same dock 2 years ago at the start of December, I advised her to postpone it until April and she did. That week in Dec was the one week that ice formed on the marina.

[Rickent]

2 minutes ago, matty40s said:

Kathy was booked in the same dock 2 years ago at the start of December, I advised her to postpone it until April and she did. That week in Dec was the one week that ice formed on the marina.

Yes Matty going to leave it for now as the weather is forecast to get even colder later in the week.

Probably going to re book for the first week in May.

Did you ring up about your winter mooring ?

[cuthound]

Post deleted. 

Posted in wrong thread.

Edited November 27, 2017 by cuthound

[Alan de Enfield]

7 minutes ago, cuthound said:

Late to this thread. (Story of my life...)

My view is that Peukerts is recoverable, except for the tiny amount lost through self discharge.

Incidentally, my experience is that self discharge is related to the electrolyte becoming "polluted" with shed material from the plates. It is much higher in older batteries and much lower in VRSLA's which do not have a wet electrolyte for the shed material to dissolve in.

As Nick intimated Peukerts is very relevant to batteries used for standby, particularly UPS batteries, where the autonomy time (time the design load is to be supported) is sometimes only 2-10 minutes. It is surprising how many young designers are unaware of Peukets effect and wonder why their 10 minute battery has failed after say 5 minutes.

The latest trend is to do away with batteries by using DRUPS (diesel engines rotary UPS) where a long autonomy time is required, or a flywheel UPS where very short autonony times are acceptable.

Are you sure you have the correct thread?

 

I fail to see the relevance to applying blacking in the Winter.

[Rickent]

Re booked 1st june.

[cuthound]

22 minutes ago, Alan de Enfield said:

Are you sure you have the correct thread?

 

I fail to see the relevance to applying blacking in the Winter.

Thanks Alan.

I wondered where that post had gone.

I've just re-written it in the battery fault thread and will delete it from this thread.