Fuels

[R Packer II]

I have been running Dynamite Racing 10% in my Stampede for the last 3
months, and my wife bought a gallon of fuel for me, but it is Cool Power 10%
(Morgan Fuels). Is this ok to run in the 'Pede?

Ron

[Jack W. Fessler, Jr.]

Should be OK, Ron. Might want to compare the oil contents to make sure the
CP is up to the manufacturers ratings of the engine, or at least equivalent
to what you've been running. I run Cool Power 15% Heli fuel in everything I
own, including a
OS .15 CV-RX I just started using, and it works fine.

Main thing is, just don't go too lean initially, and verify your not
overheating.

Jack


"R Packer II" <rpackerii@neo.rr.com> wrote in message
news:2ca6b.17510$3b2.1303984@twister.neo.rr.com...
> I have been running Dynamite Racing 10% in my Stampede for the last 3
> months, and my wife bought a gallon of fuel for me, but it is Cool Power
10%
> (Morgan Fuels). Is this ok to run in the 'Pede?
>
> Ron
>
>

[MikeF]

the green stuff?
IIRC, thats airplane fuel. When i first got back into rc about 3 years ago
the shop owner sold me cool power 10% (green)
After about one quart the engine (a p.o.s. kyosho gsx11) blew after a high
speed run.
my point is that "high speed", "gsx11", and "airplane fuel" shouldnt be used
in the same sentence.
Should you use it, just be cautious.
I, on the other hand, would use this as an excuse to finally buy an
airplane. 8)
BTW, i like blue thunder 20% sport blend.



"R Packer II" <rpackerii@neo.rr.com> wrote in message
news:2ca6b.17510$3b2.1303984@twister.neo.rr.com...
> I have been running Dynamite Racing 10% in my Stampede for the last 3
> months, and my wife bought a gallon of fuel for me, but it is Cool Power
10%
> (Morgan Fuels). Is this ok to run in the 'Pede?
>
> Ron
>
>

[Keybaud]

Airplane fuel, or helicopter fuel, usually contains more oil than car
fuel, which means the engine will last longer, but its more expensive
to produce. It will also run cooler, but have slightly less power for
the same nitro %. What is funny is that "car fuel" costs more and is
more likely to damage the engine when run too hot. Isn't "branding" a
wonderful thing.

I run CoolPower 15% in all my trucks as it has 17% high viscosity
synthetic oil, as opposed to most car fuels 10% oil. As long as the
engine is tuned properly you will be fine.

I don't touch Blue Thunder on the simple grounds that they don't
publish what its oil % is, whereas Morgan Fuels (CoolPower, etc) have
an excellent web site describing their fuels and what they are made
of.

(I'm not saying the blue Thunder is bad, as lot of people have success
with it, I'm just saying why I choose not to use it).

Simon


On Sat, 6 Sep 2003 06:52:30 -0400, "MikeF" <vanning@comcast.net>
wrote:

>the green stuff?
>IIRC, thats airplane fuel. When i first got back into rc about 3 years ago
>the shop owner sold me cool power 10% (green)
>After about one quart the engine (a p.o.s. kyosho gsx11) blew after a high
>speed run.
>my point is that "high speed", "gsx11", and "airplane fuel" shouldnt be used
>in the same sentence.
>Should you use it, just be cautious.
>I, on the other hand, would use this as an excuse to finally buy an
>airplane. 8)
>BTW, i like blue thunder 20% sport blend.
>
>
>
>"R Packer II" <rpackerii@neo.rr.com> wrote in message
>news:2ca6b.17510$3b2.1303984@twister.neo.rr.com...
>> I have been running Dynamite Racing 10% in my Stampede for the last 3
>> months, and my wife bought a gallon of fuel for me, but it is Cool Power
>10%
>> (Morgan Fuels). Is this ok to run in the 'Pede?
>>
>> Ron
>>
>>
>

[ollo]

Keybaud wrote:
>
> Airplane fuel, or helicopter fuel, usually contains more oil than car
> fuel, which means the engine will last longer, but its more expensive
> to produce. It will also run cooler, but have slightly less power for
> the same nitro %. What is funny is that "car fuel" costs more and is
> more likely to damage the engine when run too hot. Isn't "branding" a
> wonderful thing.

Not necessarily true. I have understood most airplane fuels contain LESS
oil than car fuel. Heli fuels on the other hand tend to have more oil.
It's all about cooling and planes have lots of it, cars have some and
heli's have none:) The worse natural cooling, the more oil you have to
run.

BR,
-olev-

[MikeF]

its an interesting topic. you hear all the time how airplane fuel has LESS
oil, (opposite from what Keybaud said) yet he just said cool power has 17% -
which is wayyy high - supporting what he said... even for car fuel thats
high.

This friggin discussion has been carried out for years by non-experts with
not-a-peep from anyone who has any credible facts, like factory reps. Where
is RCCA with a shootout? (usual result: "They all performed great...")

:::sigh:::::
i miss the days when ron paris would occasionally respond to topics like
this.
mike



"ollo" <ollo@hot.ee> wrote in message news:3F5A21B2.470F5AE6@hot.ee...
> Keybaud wrote:
> >
> > Airplane fuel, or helicopter fuel, usually contains more oil than car
> > fuel, which means the engine will last longer, but its more expensive
> > to produce. It will also run cooler, but have slightly less power for
> > the same nitro %. What is funny is that "car fuel" costs more and is
> > more likely to damage the engine when run too hot. Isn't "branding" a
> > wonderful thing.
>
> Not necessarily true. I have understood most airplane fuels contain LESS
> oil than car fuel. Heli fuels on the other hand tend to have more oil.
> It's all about cooling and planes have lots of it, cars have some and
> heli's have none:) The worse natural cooling, the more oil you have to
> run.
>
> BR,
> -olev-

[Keybaud]

On Sat, 6 Sep 2003 19:42:02 -0400, "MikeF" <vanning@comcast.net>
wrote:

>its an interesting topic. you hear all the time how airplane fuel has LESS
>oil, (opposite from what Keybaud said) yet he just said cool power has 17% -
>which is wayyy high - supporting what he said... even for car fuel thats
>high.

I wrote to Morgan Fuels with some questions about an EK4 and I have
copied the original email and the reply below.

-----Original Message-----
I have a Thunder Tiger EK4 Monster Truck, about which there has been a
huge debate on which fuel is best for it. It uses a modified Thunder
Tiger 70 helicopter engine and a large number of people recommend
using at least 20% oil and many choose Coolpower 30%. The original
version of the truck had a very poor heatsink and many people used a
higher oil percentage to increase the cooling of the engine. I believe
that this may be the original cause of the 20% minimum recommendation.

I have recently bought some Coolpower 15% (17% lube), which I was
mistakenly told had 22% lube. I believe (hope) that higher quality
oils perform better than cheaper ones and I would be grateful for any
information you may have on what sort of fuel would be best suited to
this particular engine.


-----Original Message-----
You've got to take into account that the Heli fuel (22% lube) and the
Cool Power 15% (17% lube) use not only different percentages of
lubricants but also different viscosity lubricants.

Ultra High-viscosity (thicker) lubricants like those used in the 15%
require less lubricant to give the fuel a proper lubricity (oiliness).
Lower viscosity (thinner) lubricants like those used in the 30 Heli
require more to give the fuel proper viscosity.

The advantage of lower viscosity lubricants is that they more easily
penetrate the moving parts. The negative is that because your using so
much lubricant you need more nitro to burn it.

The advantage of higher viscosity lubricant is that you can use less
than the average viscosity lubricant to achieve lubricity which means
that the fuel has a higher percentage of burnable (methanol) so less
nitro is needed with higher viscosities.

So it comes down to tuning, you have to decide which of the fuels
works best with your tuning style. Just like Pro Helicopter pilots use
30% Heli, 20% Heli, 25% Pro-Pattern and 15% Cool Power. They're all
World Class pilots flying the same engines and using similar setups
but they use what is comfortable to them and what fits their tuning
styles.

As for needing 20% lubricant my opinion is that you don't need it. All
engine manufacturers have to take into account the worst case
scenarios such as first time tuners, lean runs and extreme weather
conditions. That's why they recommend higher than needed lubricant
percentages. As for all the opinions on the internet, Mark Twain said
something like,

"It would be best that we all think alike; but it's difference of
opinion that makes horse-races."

I hope this helps,

Steve Morgan