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Old 19-03-2010, 10:21 PM
Richard L Richard L is offline
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Default Experience of isopropyl - good read (long)

http://enginehistory.org/Frank%20WalkerWeb1.pdf
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Old 22-11-2012, 06:37 AM
Richard L Richard L is offline
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Default Re: Experience of isopropyl - good read (long)

bump for good info
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Old 07-02-2015, 06:41 AM
OLD-N-GREY OLD-N-GREY is offline
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Default Re: Experience of isopropyl - good read (long)

WOW, ... This demands re-reading to get it past the thick part of my ordinary brain.!!!!!
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Old 11-05-2015, 12:38 AM
jmlegacy jmlegacy is offline
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Default Re: Experience of isopropyl - good read (long)

OK,

So basically it's too rich if used the injection configuration of methanol/ethanol?
What if he had adjusted the AFR to match an ideal Lambda?

I imagine that methanol has more oxygen content than iso alky.
I imagine that you will need a smaller nozzle for iso alky?

Isopropyl also contains a higher energy content than methanol
There is conflicting info on the internet about the octane of isopropyl.

and what is the stoich of Isopropanol?
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Old 11-05-2015, 09:37 PM
Richard L Richard L is offline
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Default Re: Experience of isopropyl - good read (long)

Methanol: ......... 6.43
Ethanoi:............ 8.94
Isopropanol: ..... 10.28
Butanol: ........... 11.12
Pantanol: ......... 11.68
Gasoline: .......... 14.70
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Old 17-05-2015, 04:07 AM
jmlegacy jmlegacy is offline
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Default Re: Experience of isopropyl - good read (long)

Hey richard, I had asked some chemist on Quora.com what the stoic is, the responded 11.4:1

His response:

Quote:
The combustion of isopropanol is:
C3H8O +9/2 O2 = 6CO2 +8 H2O
Mol weights are 60 for IP
32 for O2
So for each mole of IP burned,60g you need 9/2 of O2 that is 9*32/2=144g
ratio is 60/144 or 1:2.4
air is not 100% O2 is is only 21% so need
2.4/.21= 11.4
No wonder they were shooting flames.
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Old 17-05-2015, 12:41 PM
Richard L Richard L is offline
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Default Re: Experience of isopropyl - good read (long)

I got the data from here:

http://www.aquamist.co.uk/forum/alcohol fuel.pdf
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Old 18-05-2015, 09:24 AM
parmas parmas is offline
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Default Re: Experience of isopropyl - good read (long)

Why would any use Isopropanol instead of ethanol or even methanol which are surely a better alcohol ?
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Old 24-05-2015, 04:20 AM
Dust Dust is offline
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Default Re: Experience of isopropyl - good read (long)

Found this on another forum

http://subypal.blogspot.co.uk/2011/1...injection.html
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  #10  
Old 24-05-2015, 06:29 AM
parmas parmas is offline
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Default Re: Experience of isopropyl - good read (long)

Quote:
Originally Posted by Dust View Post
Great find Dust ! A must read !

According to this article isopropyl is all way better than methanol.. what about the corrossion ? Is isoprpyl a winner here again ?
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