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Making your own expansion bottle
tks - 1/2/07 at 08:53 AM

I would like to make my won stainless expansion bottle.

Does anyone has a good source for the needed stainless pressure relief cap / threaded tube needed on it?

Also how much of % of air does need to be in it? (in that way i can be sure the level is the hihgest of the system etc.

Tks


02GF74 - 1/2/07 at 09:26 AM

what can you possibly gain by doing that?

bottles in various sizes are avaialable on cars; they are marked with max/min marks, come with the correct cap and fittings tubing and are transparent so you can very easlily check the level - how will you do that - make a dipstick?

sorry - doesn't answer your question but seems a little bit pointless, you must have a lot of spare time .....


James - 1/2/07 at 10:23 AM

quote:
Originally posted by 02GF74
what can you possibly gain by doing that?



There aren't too many production cars with stainless are there!!!

Quite a few people have non-production car stainless ones.

Oh, and you can always fit a sight glass is necessary!

Cheers,
James

EDIT:
quote:
Originally posted by 02GF74

sorry - doesn't answer your question but seems a little bit pointless, you must have a lot of spare time .....


Says a man with 2300 posts in 14mths!

[Edited on 1/2/07 by James]


02GF74 - 1/2/07 at 10:30 AM

quote:
Originally posted by James


There aren't too many production cars with stainless are there!!!

Quite a few people have non-production car stainless ones.

Oh, and you can always fit a sight glass is necessary!

[Edited on 1/2/07 by James]


just because you can make it doesn't mean you have to, still you haven't answered my question as to the advantage of doing that

and how many posts ?


James - 1/2/07 at 10:55 AM

quote:
Originally posted by 02GF74

just because you can make it doesn't mean you have to, still you haven't answered my question as to the advantage of doing that

and how many posts ?


The advantage is it's stainless and looks pretty I would imagine!
Some people just like bling... look at AYOUNGMAN's pictures!

And I've been here 5 years!

Cheers,
James


suparuss - 1/2/07 at 11:02 AM

02GF74 are on the right forum? maybe the caterham fan site would better suit you?


Fred W B - 1/2/07 at 11:03 AM

I could'nt source a stainless neck, so i used a brass one, brazed into a plate, that I bolted to the tank with a gasket.

Why did I make one? - all header tanks were metal in the 60's

cheers

Fred W B
[img][/img]


flak monkey - 1/2/07 at 11:09 AM

Its easy enough to check the level in a stainless or ali header tank, you just take the cap off!

You can buy weld on radiator necks from several places, try a google search for 'weld on radiator neck'.

http://www.raceparts-direct.com/products/other_products.asp?section=Radiator+Neck


tks - 1/2/07 at 11:25 AM

my idea of level check was with 2 neumatic rapid fittings and a bit of neumtic
transparent tube..

temperatures could be a point.

The reason wy i like to build over to buy is simple

it costs me less money and less time if i build then if i go to the scrap buy one clean it and still have only a bad plastic thingly with strange forms...

i work for a stainless steel fabricator
with 8 Tig sets etc. etc. etc.

I only need 200mm of 100mm Tube
and a bit of sheet and a beer for the tig guy (if i donīt wat to do it my self)

and offcourse 1neck + cap wich if i donīt find could latheup (stil need the cap)

Wich pressure would be good for a bike engine??

TKS

the material isnīt stated on the website of the neck!!

cant weld alloy


[Edited on 1/2/07 by tks]

[Edited on 1/2/07 by tks]


02GF74 - 1/2/07 at 11:32 AM

quote:
Originally posted by suparuss
02GF74 are on the right forum? maybe the caterham fan site would better suit you?


don't think so; form before function I say.

blingy tank isn't going to make you go faster and weighs more too.


tks - 1/2/07 at 11:36 AM

crap in the bottle makes you go slower just when you donīt want to!!

cleaning of suchs a bottle is a no no...

mounting of suchs a bottle is a no no no

Tks


chockymonster - 1/2/07 at 11:43 AM

quote:
Originally posted by 02GF74
what can you possibly gain by doing that?

bottles in various sizes are avaialable on cars; they are marked with max/min marks, come with the correct cap and fittings tubing and are transparent so you can very easlily check the level - how will you do that - make a dipstick?

sorry - doesn't answer your question but seems a little bit pointless, you must have a lot of spare time .....


Coming from the bloke that wants to make stainless studs instead of buying them?
It's the same principle, he wants to save himself Ģ50-60, you want to save yourself a Ģ5

It's the wanting to and having the ability to do something yourself. I don't have the ability to I bought it all.


02GF74 - 1/2/07 at 12:03 PM

quote:
Originally posted by chockymonster

Coming from the bloke that wants to make stainless studs instead of buying them?
It's the same principle, he wants to save himself Ģ50-60, you want to save yourself a Ģ5

It's the wanting to and having the ability to do something yourself. I don't have the ability to I bought it all.



oooh!!
I'm not going stainless.

I'm making the studs as I am not aware of them being available in unc/metric. Granted I could just use the stock unc/unf.

That isn't bling, it is just practical.

The blingy bottle is just that - bling; no advantage over a plastic one; millions of production cars seem to prove that.

re:
quote:
Originally posted by tks
crap in the bottle makes you go slower just when you donīt want to!!

cleaning of suchs a bottle is a no no...

mounting of suchs a bottle is a no no no


how mcuh crap do you get in a plastic bottle then? how often do you need to clean it? mounting can always be made.

but as yoiu say, you have access to the equipment and materials (probalby get it for free so why not?

I am not against it, by all means do it.


tks - 1/2/07 at 12:24 PM

i get your point

but its just the fact that i have acces to material.

Also the time spent on making a strange support i spent on making a nice SS thingy. with a simple mounting wich suits my needs...

in fact i murder 2 flys with one attempt

also the current one has a leak and the mounting is sucks

TKs


ayoungman - 1/2/07 at 12:36 PM

Go for it, if you want to have a shiny expansion tank. Cheap alternative is to use a RangeRover Classis expansion tank, its made from copper, then have it chromed ! It also mounts laying down rather than upright which might prove useful in choosing a location.


NS Dev - 1/2/07 at 01:21 PM

You mean one like this on my car:


header tank 1
header tank 1


yes, I consider it nice, and it looks much better than a used plastic crap one, and it has the outlets, inlets and brackets exactly where they needed to be in order to save any unecessary pipework (i.e. there is NO water piping further back than level with the no. 2 spark plug of the engine)

My mate Clive had a load of 316 stainless necks made (CNC turned) to suit GM pressure caps as used by bailey tanks etc.

Unfortunately he has sold them all and not had more made yet.

I can get the thread dims off him and you can get a machine shop to turn one for you.


tks - 1/2/07 at 01:24 PM

if you can give it to me

PM is fine or post in this topic.

Tks


02GF74 - 1/2/07 at 01:37 PM

just to add, I did a web search and looked in some obvious places but nothing.

you may be able to find a broken Baileys tank or try some industrial stainless steel tank manufacturers but then what thread do you need?


tks - 1/2/07 at 03:41 PM

mostly alloy out of there..

in fact i donīt mind aslong as its universal or comes with the cap.

last thing i can do is do the trick like states above. Yamaha fazer 600 neck is in my vision with 2 bolts and some WURTH high temp (until 350degrees) silicon

options:
- ns dev specs and lathe up something
- normal cap and lathe up a normal border
- fazer 600 neck bolting

Tks


NS Dev - 1/2/07 at 04:51 PM

PS even the bolt that holds the tank on does two jobs, its the bolt that holds the removable chassis diagonal in as well!!

Will get the dims this weekend for you


ChrisGamlin - 1/2/07 at 09:33 PM

Think Automotive sell aluminium radiator necks, not sure about SS though


tks - 9/2/07 at 06:31 AM

to have min and max read on the bottle?
else i need to add a side glass. wich will take awat the nice round surface...

i had one build my self but the employees thought different about that! they said it wasnīt ace enough. now they are making a bling bling one.. (polished)

Tks


NS Dev - 9/2/07 at 10:14 AM

No, no need for max min on anything, I haven't. I also have a custom stainless tank for may brake and clutch fluids and there is no slight level on that, just a level sensor built into to side of the tank.


tks - 9/2/07 at 02:38 PM

SVA says needs to have min and max indication!!! (brake fluid) sow light alone is not enough..

TKs


NS Dev - 9/2/07 at 04:48 PM

where does the manual say that? News to me and i've read it pretty carefully!


NS Dev - 9/2/07 at 04:56 PM

yep, just checked:

......"where a warning lamp is provided as the ONLY means of checking......."

it then says various things including that the warning lamp must have a test switch, i.e. the handbrake switch.


tks - 9/2/07 at 08:02 PM

i have the bottle almost done.

but what happend?My colleges at work saw my art and couldn't accept it.

In the end i took a bit of stainless and have turned up with a lathe at work the part using the fazer 600 neck as model.

because we don't have small pipework
(smaller as 10mm) i just grabbed a bunch of M8 screws and drilled thrue them.

a piece of 15mm pipe does the outlet and 2 M8x16mm bolts do the overpressue and the normal air bleed

anyway i didn't wanted to make it shiney when i started to post this thread also i just cutted the sheets with the tig welder and when reaching the border i just melded it on.. BUT as said the quality (read as bling effect) was to low!

Now i have a college at work wich redo's the hole job and gives it a shiney finish!

in this moment the acid is doing his job
tomorrow the thing will be polished.

total cost will depend on if i tell the bos about it i only said that i needed a piece of 104mm tube and his response was that i make sure that i take it off the stock.

anyway the pressure cap with neck from ebay will be the total costs of this thing.

allin allout it will be maybe the same costs as a plastic one, atleast this one has bling+its higher quality... and i don't need to take out the crap wich doesn't come off from the strange corners the prodcars bottles has..not??

Tks