[Diy_efi] Timing Advance Curve?

[Mike]

Oh forgot to mention that faq has 4 parts,

http://www.faqs.org/faqs/autos/gasoline-faq/part1/
http://www.faqs.org/faqs/autos/gasoline-faq/part2/
http://www.faqs.org/faqs/autos/gasoline-faq/part3/
http://www.faqs.org/faqs/autos/gasoline-faq/part4/

cheers


mike



At 01:04 PM 20/12/2002, you wrote:
>yeah no worries,
>
>Brian quoted an interesting reference just recently, more up
>to date then on my old lab or workshop PC
>
>http://www.faqs.org/faqs/autos/gasoline-faq/part1/
>
>From what I recall methanol is almost likely the ideal
>fuel, highest octane by far and (in theory) cheapest
>to make (if people dont profiteer from supply chain),
>only couple of probs are weight for energy is half that
>of petrol and the invisible flame on pure methanol, so
>use an additive to make it visible - like potassium
>carbonate or some chromium or copper compounds as methanol
>behaves like water in terms of being able to dissolve
>ionic salts of copper etc - Who knows, adding a particular
>copper compound to methanol may well do something of
>interest to further increase octane (and alter burn rate ;)
>but there are several thousand to choose from <sigh>,
>but it would give a nice green flame :o)
>
>
>rgds
>
>mike
>
>
>At 05:27 PM 20/12/2002 +1300, you wrote:
>>Without coming across the wrong way Mike, why not put some truth to the
>>'rumours' on burn rate and octane rating etc?? I'm sure that a few people
>>would learn something.
>>
>>I'm particularly interested in methanol's properties and rates etc.
>>-- 
>>Matt Porritt
>>RC Race Cars and Supplies
>>ICQ #22776813
>>
>>
>>On 20/12/02 12:27 PM Mike wrote
>>
>>> At 12:03 PM 19/12/2002 -0800, you wrote:
>>>> --- Hugh Keir <hugh at sol.co.uk> wrote:
>>>> 
>>>>> In short octane has everything to do with the speed
>>>>> of the burn.
>>>> 
>>>> I'd add that this is only completely true in pump gas.
>>> 
>>> In Australia we call this a 'load of bull', it is *not*
>>> completely true under any circumstances Adam.
>>> 
>>> Your opinion is "broken and needs fixing" cause it perpetuates
>>> an invalid unsophisticated myth stemming from a misunderstanding
>>> of petrochemicals and what fuel companies do...
>>> 
>>> There 'might' be a minor correlation between higher octane
>>> and speed of burn it aint a causual relationship and in fact
>>> the opposite tends to be true to a much larger degree,
>>> 
>>>> Racing fuels often will burn more rapidly than pump
>>>> gas without pinging.
>>> 
>>> yes, and the component petrochemicals are not woefully
>>> dissimilar to that in pump gas, go talk to the fuel
>>> companies - and not some apprentice at the first
>>> level of contact...
>>> 
>>> You're way off the mark Adam, please dont put your
>>> opinion re octane/burn rate in your book - you might
>>> get sued...
>>> 
>>> Please check your references before putting anything
>>> like that down on paper or in emails for that matter
>>> 
>>> <sigh>
>>> 
>>> rgds
>>> 
>>> mike
>>> 
>>> 
>>> 
>>>>> High octane fuels do not necessarily give the most
>>>>> power.
>>>> 
>>>> In fact, unless your timing is optimized for them, you
>>>> can LOSE power with them.
>>>> 
>>>> =====
>>>> | Adam Wade                       1990 Kwak Zephyr 550 (Daphne) |
>>>> |   http://y42.photos.yahoo.com/bc/espresso_doppio/lst?.dir=/   |
>>>> | "It was like an emergency ward after a great catastrophe; it  |
>>>> |   didn't matter what race or class the victims belonged to.   |
>>>> |  They were all given the same miracle drug, which was coffee. |
>>>> |   The catastrophe in this case, of course, was that the sun   |
>>>> |     had come up again."                    -Kurt Vonnegut     |
>>>> 
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