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HomeAircraftHelicopterGasser Model RC HelicoptersEngines › "Juice Box" ever seen one?
06-24-2015 01:00 AM  3 years agoPost 21
mustang67ford

rrKey Veteran

Central Pennsylvania

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I never knew you could add nitro fuel to gasser fuel. Does anybody on here actually do it?

Team HeliProz - Retired
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06-24-2015 01:13 AM  3 years agoPost 22
Gearhead

rrMaster

Vt

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I never knew you could add nitro fuel to gasser fuel. Does anybody on here actually do it?
not here that I know of, but if you go back and see my link you will see people do for planes

Jim
Buzz Buzz Buzz

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06-24-2015 01:56 AM  3 years agoPost 23
Gearhead

rrMaster

Vt

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to add,
it will work !!, those guys in the link have been doing it for years !!, but I have found some people just don't want you to learn new things (what ever)..
the thing is, as I said before, you have to be aware of your Compression Ratio,, the guys in the link are using stock compression Ratios but are mixing 10% or 15% at 1/3 Glow to 2/3s Gas,, but with Helis if you have a Modified engine it is a good 99% chance it's Compression Ratio has been raised, but how much.

if you read the thread in the link (or ask in it), you can find out what Oils will mix with both Gas and Alcohol, and what off the shelf Glow Fuels will mix with Gas

BTW, when mixing 1/3 Glow to 2/3s Gas the guys in the link are not adding Oil>>, because the Glow Fuel has so much Oil in it they don't need to add Oil for the Gas

read the link you will lean all you need to know about it

http://www.rcuniverse.com/forum/eng...o-ignition.html

Jim
Buzz Buzz Buzz

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06-24-2015 04:02 AM  3 years agoPost 24
turboomni

rrProfessor

East of the Equator

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I never knew you could add nitro fuel to gasser fuel. Does anybody on here actually do it?
In my experience I know of no one doing this for airplanes and especially helicopters. As you know a heli has constant loading and cooling problems compared to airplanes. If it were a real solution to anything it would be common knowledge by now especially for helicopters. Actually I hope I am wrong!! LOL!! We need something to inject anything into the gasser movement.
I am happy with my 2 gassers ,,I know what they will do and not do and most of all I am happy to bring them home in one piece. Gas is cheap and gassers are what they are. More power? Go nitro,,,More power ? Go electric. Want a whole new realm of what it takes to run a gasser heli with alcohol and a pinch of nitro and oil and risk everything go ahead. I don't like being the lab rat. If anyone does I hope they will post everything as I will be all ears. Has the geredheaded done this on his gasser heli? I assume he brought this up. He should prove it.
Actually in the past a big former Centurrriy rep never mentioned anything of the sort,,,he pushed Sef,,,that was his drug.

Setup is everything, All my heli's can fly far better than I can pilot them

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06-24-2015 05:00 AM  3 years agoPost 25
RM3

rrElite Veteran

Killeen, Texas - USA

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well I read thru about 20 pages... and with what is being posted in comparison to our heli engines is not good a good comparison;

the engines in the discussion are all pullan, echo, ryobi, homelite and other brand engines pulled from actual weed-eaters. the displacement is in the 25cc (up to 45cc) range and they are getting less than 2hp on most of them even after the exotic fuel mixes with include acetone, methanol and even ethanol.

by comparison my latest engine design of a "small" 22cc stroker tested out to 3.3hp by turning a 14x6 to 12,590 rpms brand new and still not broken in. So by comparison my engine is producing more power per cc and thats with a regular V2 muffler and the usual 32:1 gasoline oil mix.

in most cases all this fuel mixing on the attached link has more to do with converting a cheap spark ignition engine to a glow plug engine... basically to remove the weight of the ignition system.

at that point you might as well be running a nitro engine to begin with.

showing a preference will only get you into trouble, 90% of everything is crap...

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06-24-2015 08:54 AM  3 years agoPost 26
Gearhead

rrMaster

Vt

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and with what is being posted in comparison to our heli engines is not good a good comparison;
I agree, but it's well known that Methanol makes more power than Gas, and Nitro makes more power than Methanol or Gas, so adding some to our Heli engines will make more power, more Torque,, you just need to get the Mix correct in relation to the Compression

and BTW, notice that Thread has 97 pages, if you kept reading that Thread you will fine that the guy that started that Thread does Port Modify some of his engines and he does get good results

and the Acetone is only used to stabilize the mix, as people do use Fuel stabilizers in the Gasser Heli hobby,, and, I even know guys that used Windex as a stabilize in their Glow Fuel,

the engines you pointed out produce less power because they are Lower Performing Engines, yet they do get an Increase in Torque and Top End RPM with using that Gas/Glow Mix,, there have been reports with increases of 200 to 400 RPMs

BTW, did you know about the top of the line MVVS 26cc Glow and MVVS 35cc Glow, and don't forget the Moki 26cc Glow, 35cc Glow and 60cc Glow Twin, all produced more power on Glow than Gas,, and don't forget the well known 35cc Webra Bully Glow and the Super Tiger 22cc Glow and 32cc Glow,, and the Old OPS 30cc,, <all these engine produce less power and less Top RPM when run on Gas
in most cases all this fuel mixing on the attached link has more to do with converting a cheap spark ignition engine to a glow plug engine... basically to remove the weight of the ignition system.
yes, and how much lighter would a Gasser Heli be without an Ignition and Ignition Batteries

Jim
Buzz Buzz Buzz

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06-24-2015 09:05 AM  3 years agoPost 27
Gearhead

rrMaster

Vt

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Oh, for another thought, Methanol and Nitro, Glow Fuel, <an Alcohol, burn cooler than Gas

Jim
Buzz Buzz Buzz

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06-24-2015 12:18 PM  3 years agoPost 28
jharkin

rrApprentice

Holliston, MA - USA

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the engines in the discussion are all pullan, echo, ryobi, homelite and other brand engines pulled from actual weed-eaters. the displacement is in the 25cc (up to 45cc) range and they are getting less than 2hp on most of them even after the exotic fuel mixes with include acetone, methanol and even ethanol.
I didnt read through any of it, but look at the age of the thread - started in 2003.

And from the title the objective was not getting more power than running gas, it was to be able to ditch the sparkplug and run glow ignition... Something Ive never really understood, spark is so much more reliable than glow its worth the couple ounce weight penalty IMHO. (unlimited class pylon racers run Zenoah GT80 twins converted to methanol.... but they keep the spark ignition. YS top of the line pattern engine now runs CDI on methanol too).

Speaking of power, if they only managed 2hp from a 45 that's pretty poor. Commercially available dedicated airplane gas engines have been able to beat that for a long time.

My trusty DA-50 pulls a measured 4.8hp with nothing more exotic than 32:1 87 octane mix and a pitts muffler (6700-68000 on a 23x8). Guys running them on KS tuned pipes have hit more like 6hp. And thats a 10 year old design - there is better out there.

-Jeremy
Whiplash-G
Helix 700G
T-Rex 450 fbl conversion
alot of planks

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06-25-2015 05:14 AM  3 years agoPost 29
Gearhead

rrMaster

Vt

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And from the title the objective was not getting more power than running gas,
true, but some of those guys are reporting they did get more power with the mix,, that's all I said
it was to be able to ditch the sparkplug and run glow ignition... Something Ive never really understood, spark is so much more reliable than glow its worth the couple ounce weight penalty IMHO.
it's a hobby, people do in it what interests them,
(unlimited class pylon racers run Zenoah GT80 twins converted to methanol.... but they keep the spark ignition. YS top of the line pattern engine now runs CDI on methanol too).
yes, but in the air straight methanol cost more than 2/3rds than this Gas/Glow mix does, with the Mix you do not need to buy Oil, just mix the Glow Fuel and Gas, and those guys in the link are not racing unlimited class pylon
Speaking of power, if they only managed 2hp from a 45 that's pretty poor. Commercially available dedicated airplane gas engines have been able to beat that for a long time.
the people in the thread are doing what interests them

Jim
Buzz Buzz Buzz

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