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 Post subject: Re: Hydro fluid
PostPosted: Mon Feb 19, 2018 4:16 pm 
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848cc
848cc
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Joined: Sun Jul 13, 2008 8:26 pm
Posts: 276
Location: Coffs Harbour
It all sounds pretty positive for the stuff I have. Id be interested to here about the viscosity differences and changes it could have on the system.

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 Post subject: Re: Hydro fluid
PostPosted: Mon Feb 19, 2018 4:26 pm 
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998cc
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Joined: Mon Jul 07, 2014 12:36 pm
Posts: 608
Location: Bentleigh, Melbourne
For what it's worth, I don't think there would be an enormous difference in the viscosity of 50/50 alcohol/ water versus straight water. But it would be significantly different to that of ethylene glycol I would think. If only I still had access to a lab.... :-(

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..


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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 1:59 pm 
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The Mini King
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Joined: Mon May 21, 2007 7:20 pm
Posts: 1338
Location: Windsor, NSW
You can get a bit of an idea of the difference in viscosity by putting an equal amount of each fluid in a couple of
the same size plastic bottles.
Cut the bottoms off, put the same size a small hole in each cap,
turn upside down fill one bottle with 50/50 alcohol/water
fill the other bottle with the same amount of glycol turn upside down and note how long it takes to drain each bottle

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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 2:29 pm 
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998cc
998cc

Joined: Mon Jul 07, 2014 12:36 pm
Posts: 608
Location: Bentleigh, Melbourne
Clever John, better still, use the same bottle and hole for both tests....

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..


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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 2:37 pm 
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848cc
848cc

Joined: Thu Apr 07, 2016 10:07 pm
Posts: 327
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Last edited by eightfifty on Thu Sep 29, 2022 12:41 pm, edited 1 time in total.

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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 3:27 pm 
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1360cc
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Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6648
Location: Melbourne, VIC
Tony - Thanks for posting those additional references. Some great information there for hydro sprung car owners.

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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 4:58 pm 
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998cc
998cc

Joined: Mon Jul 07, 2014 12:36 pm
Posts: 608
Location: Bentleigh, Melbourne
Had a quick look at the above links, thanks 850!

For those who wish to make their own brew, Ethyl alcohol or Ethanol and "Methylated" Spirits is the basically the same thing except it has some additives so you can't drink it!
$3.43 per L at Bunnings...
So if you made a brew of say 50% Methylated Spirits, 45% distilled water and 5% Ethylene Glycol coolant concentrate (to give you the corrosion inhibitors and it would make it a lovely green!), I can't see a problem. Especially given the large differences in the formulations quoted in the articles above, the hydrolastic suspension system performance doesn't seem to be too sensitive as to what fluid is used...
(Benzotriazole is a corrosion inhibitor)
Apparently only a few litres is required, so a brew could be made for under $10 me thinks...
My 10 cents worth..
Cheers
Michael

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..


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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 5:05 pm 
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1275cc
1275cc

Joined: Sat Feb 09, 2013 5:44 pm
Posts: 2176
Location: Camden
deluxe67 wrote:
Had a quick look at the above links, thanks 850!

For those who wish to make their own brew, Ethyl alcohol or Ethanol and "Methylated" Spirits is the basically the same thing except it has some additives so you can't drink it!
$3.43 per L at Bunnings...
So if you made a brew of say 50% Methylated Spirits, 45% distilled water and 5% Ethylene Glycol coolant concentrate (to give you the corrosion inhibitors and it would make it a lovely green!), I can't see a problem. Especially given the large differences in the formulations quoted in the articles above, the hydrolastic suspension system performance doesn't seem to be too sensitive as to what fluid is used...
(Benzotriazole is a corrosion inhibitor)
Apparently only a few litres is required, so a brew could be made for under $10 me thinks...
My 10 cents worth..
Cheers
Michael


Is that estimate of under $10 referring to 'per litre'?


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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 5:27 pm 
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998cc
998cc

Joined: Mon Jul 07, 2014 12:36 pm
Posts: 608
Location: Bentleigh, Melbourne
No Bill, for a few litres plus. e.g. 1 L of alcohol $3.43, 900mL distilled water, price don't know, must be cheap as, 100mL Coolant concentrate, price don't know. So 2 L for way under $10 I imagine....

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..


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 Profile  
 
 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 5:36 pm 
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998cc
998cc

Joined: Mon Jan 12, 2015 10:59 pm
Posts: 963
Location: Holt ACT
deluxe67 wrote:
No Bill, for a few litres plus. e.g. 1 L of alcohol $3.43, 900mL distilled water, price don't know, must be cheap as, 100mL Coolant concentrate, price don't know. So 2 L for way under $10 I imagine....


$31 for 6litres of coolant concentrate on sale last weekend.


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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 8:53 pm 
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1098cc
1098cc

Joined: Wed Sep 30, 2015 9:38 am
Posts: 1493
Location: Brandy Hill, NSW
Why use all these formulae, when you can buy the real thing for about $36 for 6 litres.


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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 9:10 pm 
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848cc
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Joined: Sun Jul 13, 2008 8:26 pm
Posts: 276
Location: Coffs Harbour
Yeah, i can sell anybody a few litres.

Sent from my SM-G955F using Tapatalk

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1965 Smooth roof Van
1969 Cooper S MK2
1970 Mini K


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 Post subject: Re: Hydro fluid
PostPosted: Tue Feb 20, 2018 9:15 pm 
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1360cc
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Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6648
Location: Melbourne, VIC
cooperess wrote:
Why use all these formulae, when you can buy the real thing for about $36 for 6 litres.

I agree, but I do understand some people getting real enjoyment from the research and then going to the effort of making their own brew. A bit like baking your own bread when you can easily wander into Bakers Delight and buy a loaf already made. It's not really about the economics :D

P.S. I'll be buying mine already mixed. :wink:

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 Post subject: Re: Hydro fluid
PostPosted: Wed Feb 21, 2018 9:03 am 
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848cc
848cc

Joined: Sat Sep 01, 2007 8:07 am
Posts: 151
Location: Killingworth Victoria
Thank you eightfifty for your for your comments and the links provided to the Austin technical articles. I have downloaded all the articles on building a Churchill style pump. Question is are any drawings available for the components ?
I have all the facilities to construct the pump. It will make a rewarding project and a break from constant work on Minis

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 Post subject: Re: Hydro fluid
PostPosted: Thu Feb 22, 2018 6:18 pm 
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1275cc
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Joined: Thu Aug 31, 2006 7:56 pm
Posts: 2651
Location: Muswellbrook -- NSW
deluxe67 wrote:
No Bill, for a few litres plus. e.g. 1 L of alcohol $3.43, 900mL distilled water, price don't know, must be cheap as, 100mL Coolant concentrate, price don't know. So 2 L for way under $10 I imagine....


Pretty close to the money i'd say Deluxe 67 , i don't think i paid any more than $20 total when i done my car about 6-7 yrs ago and still have about half of it left , i use a 70/30 mix of Castrol Inhibitor and demineralised water , from memory i didn't use 2 litres .


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