Espritmodel.com Telemetry Radio
Reply
Thread Tools
Old Feb 17, 2007, 08:02 PM
Steve
dsswest's Avatar
Sacramento, CA
Joined Apr 2005
145 Posts
Question
Which fuel for Evolution .46 2 stroke?

Newbie question here...

I'm running an Evolution .46 2 stroke. What fuel to use?

5%? 10%? 15%

Do evolutions "like" one fuel over another? Someone at the field recommended Powermaster fuel for the evolution.

Comments?
dsswest is offline Find More Posts by dsswest
Reply With Quote
Sign up now
to remove ads between posts
Old Feb 17, 2007, 08:21 PM
Registered User
Joined Jun 2006
284 Posts
i run 15% power master works great 10% would work ans be a lil less costly there "sport" fuel works great (18% oil [1/2 casto oil 1/2 synth. oil])
Flying freak is offline Find More Posts by Flying freak
Reply With Quote
Old Feb 17, 2007, 09:01 PM
Registered User
USA, TX, Diana
Joined Aug 2005
270 Posts
I use 10% and 15% Cool Power. Both give great results. Really, can't tell the difference in performance between the two fuels. Generally, I purchase the 15% unless my LHS is out then I'll get 10%.
safebet is offline Find More Posts by safebet
Reply With Quote
Old Feb 17, 2007, 09:12 PM
Registered User
Joined Feb 2007
51 Posts
Well if you want to run the good stuff get byron preinum sport 10% it has castor in it. that cool power stuff will roast your engine, and wear it out sooner unless you add caster to it.Its best to run the fuel that has the best lubercating ability and thats byron. 15% is ok for small engines,but you get up into the .60 size and bigger you might find that your burning out glow plugs then go to 10% and that will stop. I run glow engines from .10 to 1.08 and 10% works good in all of them. Byron will give you a much more stable needle setting on the ground and won't change wile in the air. I ran that coolpower crap and ide set the needle on the ground and take off the mixture would keep changing in flight.I would have to land and keep reneedleing it.untill I tryed byron. Set it once! And forget cool power in a twinn engine you will never get them to run the same. Been there done that. They will with byron fuel its the best I have ever ran.
Athlon-DHU- is offline Find More Posts by Athlon-DHU-
Last edited by Athlon-DHU-; Feb 17, 2007 at 09:35 PM.
Reply With Quote
Old Feb 18, 2007, 09:36 AM
Canucklehead
orenda635's Avatar
GTA, Ontario, Canada
Joined Apr 2004
827 Posts
I've talked to mechanics, and castor is not the best. It gums up the engine with sludge. That sludge will rob power and cause excess wear. Use synthetic.

I use 10% Cool Power Synthetic for that engine. The evolution runs quite cool with this engine. There will be no heating issues if using synthetic.
orenda635 is offline Find More Posts by orenda635
Reply With Quote
Old Feb 18, 2007, 10:09 AM
God is good
Viper Pilot's Avatar
Banjul
Joined Jan 2001
4,246 Posts
Quote:
Originally Posted by orenda635
I've talked to mechanics, and castor is not the best. It gums up the engine with sludge. That sludge will rob power and cause excess wear. Use synthetic.

I use 10% Cool Power Synthetic for that engine. The evolution runs quite cool with this engine. There will be no heating issues if using synthetic.
I disagree! All fuel should have some castor!
Viper Pilot is offline Find More Posts by Viper Pilot
Reply With Quote
Old Feb 18, 2007, 10:25 AM
God is good
Viper Pilot's Avatar
Banjul
Joined Jan 2001
4,246 Posts
This should be considered . . .
Quote:
The oil portion of the nitro fuel blend is very interesting. Over the years, there has been much debate and changing recommendations. First there was castor oil. Then there were synthetics. Some fuels have been blended with all castor oil and some with all synthetic oils. Today, most nitro fuels contain a combination of both synthetic and castor oil. Castor oil is a naturally occurring oil that is derived from a plant. It is a natural lubricant that has some very unique properties. When subjected to higher temperatures, castor oils will actually begin to break down. Normally, this would be a bad thing for a lubricant to do in an internal combustion engine. However, in the case of castor oil, this "breaking down" is one of it's greatest strengths! When castor oil breaks down at high temperatures, it's properties change and it's high temperature lubricating properties actually increase! As engine temperatures go up further, the castor oil continues to break down and forms a lubricating film that actually protects the engine better. In the process, this film or residue (like varnish) can also gum up the engine and cause other problems. On the other hand, synthetic oils typically are much cleaner and normally do not leave residues behind. Synthetic oils can help lubricating metal surfaces at higher RPM's when temperatures are lower. However, when temperatures rise, synthetic oils can break down and actually burn off leaving little protection for the engine. So, there are strengths and weaknesses of both castor and synthetic oils. Thankfully, most modern rc trucks run on nitro fuel blends that utilize the strengths of each type of oil, and contains a blend of both castor and synthetic oils to help offer maximum protection for the nitro engine under many different conditions.
Viper Pilot is offline Find More Posts by Viper Pilot
Reply With Quote
Old Feb 18, 2007, 11:28 AM
Canucklehead
orenda635's Avatar
GTA, Ontario, Canada
Joined Apr 2004
827 Posts
Quote:
Originally Posted by Viper Pilot
I disagree! All fuel should have some castor!
That's your opinion. I've had better experience with the blends that contain mostly synthetic oil.

I have a question about fuel though. What's the difference between regular aero blends and four stroke blends? I've flown two strokes exclusively for years but I have a scale plane I want to put a four stroke in. Can the blends be used interchangeably?
orenda635 is offline Find More Posts by orenda635
Reply With Quote
Old Feb 18, 2007, 05:00 PM
Registered User
Joined Jun 2006
284 Posts
I THINK the big difference comes to the oil in a 4c castor isnt soo goood as it will gm up the valves but you still need some i have laos been told that there are addatices to help the valves seal better but am unsure of this statmenst thruthfullness..
Flying freak is offline Find More Posts by Flying freak
Reply With Quote
Old Feb 18, 2007, 06:28 PM
ProBro #1889
DsWright's Avatar
United States, OH, Amelia
Joined Aug 2004
603 Posts
Castor oil is NOT needed, ever.

I have an O.S. .46ax with 17 gallons through it that has never sen a drop of fuel that wasn't powermaster or wildcat YS 20/20 blend. 20% nitro, 20% Syntehtic oil.

Still runs great.
DsWright is offline Find More Posts by DsWright
Reply With Quote
Old Feb 18, 2007, 09:47 PM
Canucklehead
orenda635's Avatar
GTA, Ontario, Canada
Joined Apr 2004
827 Posts
I have a feeling the castor vs synthetic debate is going to go on as long as there are glow engines. I guess we should just use what works for us.
orenda635 is offline Find More Posts by orenda635
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
What type fuel for a Evolution .46 ? C_Heath Fuel Plane Talk 3 Sep 30, 2005 06:34 AM
Evolution 0.46 2-Stroke - Any Good/Bad Experiences Ham-fisted-oaff Engines 3 Oct 13, 2004 12:37 PM
Which EDF for 1 or 2 FUN400-28 with MiniFan480 OAK Electric Ducted Fan Jet Talk 7 Nov 15, 2002 05:52 AM