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Carl Hibbs
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PostSubject: Re: Ballast   Sat Jul 16, 2011 9:10 am

David Grantham wrote:
My local Leicestershire granite quarry, 5 miles away, offer as much 3mm granite finings/chippings as you can get into your car boot for a fixed price of £5.

Is it worth a sail over, wine one way, ballast for the return trip ?

Yes it could be...I will need that for the garden.
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Paulus



Location : The Netherlands

PostSubject: Re: Ballast   Sat Jul 16, 2011 9:13 am

If it's gonna cost a lot, perhaps perlite is an alternative? It's a siliceous rock and it's extremely light and much cheaper. I bought a 100 liter bag for 17,50 euro at my local garden centre to use it in my hypertuffa mix (roads, rocks, platforms etc). I think it weighted about 5 kilo!
It's also sometimes called 'Agra Perlite' (for agricultural usage).

Here's more information on it: http://www.perlite.net

However, it's always white or light gray so you have to color it. I think when you use some sort of mixture of diluted white glue and black paint you can glue and color it the same time (the same way ballasting smaller scale tracks).

But be aware; you can buy perlite on Ebay or on many shady "greenery" sites for very high prices in much smaller doses (like 20 euro for a 5 litre bag!!!). This because it's very popular to use it planting cannabis (perhaps because those folks smoke that trash so much they buy it for any price?).
So, you can better buy it from a garden centre or directly from a supplier (like for instance in The Netherlands: Pull Rhenen - don't know any French supplier).

EDIT: I did find a French site where you can order it: http://www.perlite.fr/

Paul



Last edited by Paulus on Sat Jul 16, 2011 9:23 am; edited 1 time in total
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clive_t



Location : Portsmouth, England

PostSubject: Re: Ballast   Sat Jul 16, 2011 9:21 am

dtsteam wrote:
Err, Tell me your not a maths teacher, Clive.

No, i design passenger aircraft...









Cool

_________________
Cheers,

Clive

Fat Controller of the S&CGR

http://www.scampington-chipside.co.uk
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http://www.scampington-chipside.co.uk
Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Ballast   Sat Jul 16, 2011 11:44 am

Just looked at one of the (many) suppliers here.

Kenzai Cork

They quote the density as 65kg/m3 and 4 x 250 litre bags = 1m3 (cubic metre)

Which equates very roughly to my simple mesurements of 1 litre/70 grams, 250 litres/17.5kg (x 4 = 70kg).

Maybe I could teach maths instead of English now I've done the course. Wink

However, what we really need to know in practice is how much surface the stuff covers. I'll do that later.... tongue
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Pierre d Imagimonde



Location : france

PostSubject: Re: Ballast   Sat Jul 16, 2011 12:49 pm

ca a l air joli
mais que se passe t il quand il pleut dessus ?
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Ballast   Sat Jul 16, 2011 1:03 pm

Pierre d Imagimonde wrote:
ca a l air joli
mais que se passe t il quand il pleut dessus ?

Rien, c'est marqué 'imputrescible' mais je n'ai pas encore essayé pour de vrai. Je vais le faire ce weekend.
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Carl Hibbs
Admin


Location : Haute Normandie - visitors welcome

PostSubject: Re: Ballast   Sat Jul 16, 2011 1:13 pm

Here we go. This is turning into quite a saga!

Take one litre.

Spread it approx 1 cm thick

...and you get about 30 x 30 cm

This is 60 cm of LGB type track (Trainline actually)

It uses 600 cc or about 2/3 of a litre so 1 litre will generously ballast about 1 metre of track with a bed 15 cm wide. A litre a metre....Laughing



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