Big difference?  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Big difference?
Page: [1]

Login
Message << Older Topic   Newer Topic >>
Big difference? - 1/18/2008 1:36:52 AM   
panzertank


 

Posts: 176
Joined: 7/31/2007
From: frenchtown, NJ, USA
Status: offline 		I am thinking about getting a glow helicopter and already own an glow airplane. I Know that you must get differeant fuels for each. My question is WHY? What is the difference between the two and are they interchangable? Any help is Appreciated.
       Post #: 1

RE: Big difference? - 1/18/2008 2:38:00 AM   
XJet


 

Posts: 2995
Joined: 3/31/2003
From: Tokoroa, NEW ZEALAND
Status: offline 		Most (but not all) heli-fliers run higher nitro than is normal for fixed-wing planes, partly because they want more power and partly because there's a belief that higher-nitro equals lower running temperatures.

Some heli-fuels also have a higher oil content to provide improved protection given the more limited cooling and greater loads that heli-engines tend to endure.

You don't *have* to get different fuels for each -- most heli-engines will run just fine on as little as 10% nitro and many fixed-wing engines will run fine on as much as 20%-30% nitro.

_____________________________

When I'm not here, I'm at RCModelReviews

(in reply to panzertank)
       Post #: 2

RE: Big difference? - 1/28/2008 7:46:55 PM   
Fuelman


 

Posts: 980
Joined: 12/31/2001
From: Jordan, NY, USA
Status: offline 		I fly my heli with any fuel I have laying around. I just tune accordingly.


_____________________________

Fuelman
Cooper Fuels LLC

(in reply to XJet)
       Post #: 3

RE: Big difference? - 1/28/2008 8:27:14 PM   
Jezmo



Posts: 644
Joined: 6/26/2006
From: Spring, TX, USA
Status: offline 		Slap a Venom temp recorder on your Heli (They are cheap at tower) and see the difference for yourself. I can't speak for the 30 size stuff but it sure makes a difference on the OS Hyper in my Raptor. To clarify a little what happens is you tune the heli richer on 30% giving you about the same power overall (Slightly more) but the extra fuel keeps the temp down. If you run it leaner like you would on 15% you can pick up power but the temps will be up as well. There is less air flow coming from the fan as compared to a prop and the airstream while in flight on a plank. On 30% my Hyper runs between 200 and 210 at 2000 rpm's head speed. (17,000 engine r's) I didn't have the Venom when I was running 15% in it, but I assure you it was running way hotter. When I would shut it down after a flight it would be smoking; it doesn't do that on 30%.

_____________________________

Raptor 50 V2 OS 50 Hyper, T-Rex 450XL CDE, Spektrum DX7, SuperTigre OS FOX Saito Enya Jett TT

(in reply to Fuelman)
       Post #: 4

RE: Big difference? - 1/28/2008 11:39:36 PM   
CustomPC


 

Posts: 280
Joined: 4/19/2004
From: SydneyNSW, AUSTRALIA
Status: online 		Also, most heli fuels do not contain any castor oil in the mix. They use 100% synthetics, mainly because the castor tends to varnish at the higher temps which could stick the rings and it also leaves brown stains on their big shiny mufflers.

On a ringed (heli) engine, fuel with no castor is tolerable but if you don't run castor in an ABC or ABN plane engine you run the risk of destroying the piston and liner with a lean run.

(in reply to Jezmo)
       Post #: 5

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> Big difference?
Page: [1]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.469RCU1