| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1554.1 | A few fuellish answers | BAHTAT::EATON_N | Stupid English Ker-nigg-it | Wed Sep 08 1993 10:22 | 36 |
|
At Last!!!
(I told Steve about this notesfile months ago, he *claims* to be "too
busy". Pah!) 8^)
OK, I'll chuck in what I've picked up:
More nitro means:
A) Your fuel costs more!
B) Your engine's likely to be easier to start (especially on a cold
day).
C) You need to watch out for corrosion problems after the run. As I
understand it the nitro leaves nitric acid kicking about in the
engine. You need to run the engine dry, and use some sort of after
run oil. There's a commercially available after run that I use
which seems pretty good, but doubtless there will be about 300
private recipes from the good folks in here! (Try note 64).
D) Needle valve settings become less critical.
E) You get more power.
I hadn't heard of cooler running as a benefit, but maybe this is a
consequence of D) ?
That's all folks!
Nigel
PS> Steve, put a note in 4 to tell us what you're flying!
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| 1554.2 | | CXDOCS::TAVARES | Have Pen, Will Travel | Wed Sep 08 1993 11:42 | 2 |
| A former DEC employee, John Chadd, entered quite a few notes on fuel
into this conference. Check around and you'll find some good info.
|
| 1554.3 | Nitro = more O2 | LEDS::WATT | | Thu Sep 09 1993 09:04 | 15 |
| My experience is that smaller engines need more nitro to run well.
Nitro improves idle as well as what's stated above. Most sport engines
in the 25-60 size run best on 10-15% nitro. With ABC engines it's best
to stick with the same nitro content fuel to keep running temperatures
more constant. Nitro provides additional oxygen to aid in combustion
which is why you can get more power. More O2 plus more fuel = more
power. Always run your engine dry and use an after-run oil at the end
of every flying session. To run it dry, drain the tank and leave the
fuel line off. Start the engine and let it run until it won't fire
anymore. Then add after-run oil down the carb and spin it over to
distribute it around the bearings. I use Mobil-1 motor oil for
after-run oil. A quart will last you a lifetime.
Charlie
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| 1554.4 | my .02 cents worth | GALVIA::ECULLEN | It will never fly, Wright ! | Thu Sep 09 1993 12:01 | 10 |
| My experience is that when using Nitro on 4 bangers is that with the
larger pitched props (> 11") it helps the low idle be more consistant.
I went from using a home brew a few years ago, to a 5% Nitro by Flair,
to 15% nitro (Morgan fuels). The latter has been the most successful
for moi !
There was an interesting article in MAN maybe in the middle of last
year on Nitro, what you got, etc.
Alt-E.
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