Author Topic: New Fox Super Stunt plug (Read 4653 times)

Jim Kraft · « **on:** May 17, 2010, 06:42:49 AM »

Anyone tried the new Fox Super Stunt Plug yet? They say it takes the burp out.

Frank Imbriaco · « **Reply #1 on:** May 24, 2010, 06:48:43 AM »

I have been using one in a TF Nobler ARF with a Fox 35. No burb, but then again, the engine is an inverted mount. I bought a card of them at the WRAM Show and I'm still using the first one after 18 flights plus an hour on the break-in stand.. I plan to run one in a combat ship with higher nitro- that'll be a better test of longevity.

Jim Kraft · « **Reply #2 on:** May 24, 2010, 07:30:52 AM »

Thanks for the reply Frank. I was hoping they would be at least as good as some of the other hot plugs out there. Guess I may have to try them one of these days just to see.

Kim Mortimore · « **Reply #3 on:** May 24, 2010, 08:41:17 AM »

Quote from: Frank Imbriaco on May 24, 2010, 06:48:43 AM

..... I plan to run one in a combat ship with higher nitro- that'll be a better test of longevity.

In stunt we want the hottest plug we can find. In combat or other high nitro, high power uses, a colder plug is considered best. With your longevity test you may possibly get predetonation "knock" because the combination advances the ignition timing too far.

Frank Imbriaco · « **Reply #4 on:** May 24, 2010, 09:13:35 AM »

I plan to go no higher than 15% nitro so that plug should hold up . At least that is what I was told by Fox...

Chris Keller · « **Reply #5 on:** March 27, 2011, 10:04:54 PM »

Just tried the fox stunt plug on my fox 50th ann. .35 today. I have tried everything to get this engine to run right, including the wooden plug, varying tank height, uniflow, clunk, pressure, standard vent, etc. NOTHING made a difference. On a hard outside the engine would burp and die about 75% of the time. I have had the motor on 3 different profiles, all the same problem. The engine is now in a rsm ringmaster. Put in the stunt plug and the problem is fixed. Not kind of better, but truly fixed. The engine sound changes when going into a hard outside, but it is not a burp. THANK YOU FOX! I dont have to switch engines to get a reliable pattern run. Having said that, its probably just a hot idle bar plug, but whatever - it works.

Chris Wilson · « **Reply #6 on:** March 27, 2011, 10:54:46 PM »

Quote from: Chris Keller on March 27, 2011, 10:04:54 PM

Just tried the fox stunt plug on my fox 50th ann. .35 today. I have tried everything to get this engine to run right, including the wooden plug ............

Didn't know that glow plugs made from wood even worked!!

I suppose that the heat of combustion must keep it glowing hot enough for a constant burn. $:-\$

Jim Kraft · « **Reply #7 on:** March 28, 2011, 06:41:38 AM »

Since I posted this, I have been running one in my McCoy 40. It seems to run as well or better than the Thunderbolt R/C plug I was using. I only have about 10 flights on it so far.

Russell Shaffer · « **Reply #8 on:** March 28, 2011, 07:23:50 AM »

Where did you find the plugs? Direct from Fox? I want to try some.

Jim Kraft · « **Reply #9 on:** March 28, 2011, 08:16:15 AM »

I got mine from Marvin Denny last year at the Topeka contest. I believe he got them from Fox. I will try one in my Fox on my Sterling Mustang. It has been running very well on a Glo Devil 300 plug, so it will be a good comparison.

kenneth cook · « **Reply #10 on:** March 28, 2011, 05:53:06 PM »

I've had several Fox plugs more or less fall apart. The post would come loose or just fall out. This isn't due to inverted landings. They just come loose then the engine has virtually no compression. Prior to it completely failing you generally experience poor running characteristics. I did try the new plug and it worked well. I just hope the problem with the post coming loose has been resolved. I'm not sure about the cost as the one I tried was given to me as an experiment. I've used the r/c Fox plugs for years but they generally don't have longevity as the rpm's fall off when the battery is disconnected. Ken

rustler · « **Reply #11 on:** March 29, 2011, 01:49:45 PM »

If you really like the plug, remember the old speed trick of epoxying round the post before using, to prevent blowouts.
Whether you should need to do this on a supposedly "fit for purpose" new item is another matter.

Kim Mortimore · « **Reply #12 on:** March 29, 2011, 02:05:35 PM »

Quote from: kenneth cook on March 28, 2011, 05:53:06 PM

.......I've used the r/c Fox plugs for years but they generally don't have longevity as the rpm's fall off when the battery is disconnected. Ken

My understanding is that when the rpm's fall off after battery disconnect, the best thing to do is to remove the plug (but don't forget to stop the engine first), place the plug in your dominant hand (or if you are Larry Fernandez either hand will do nicely), take a running start, wind up, and see how far you can hurl the plug. It seems that Fox has a knack for making products that lend themselves well to hurling.

Steve Helmick · « **Reply #13 on:** March 29, 2011, 07:13:41 PM »

Fox and Budweiser....

Steve

Jim Kraft · « **Reply #14 on:** March 29, 2011, 07:24:07 PM »

Fox also has a new Hot Plug. I have a couple but have not tried them yet. They look identical to the Super Stunt plug, but they are a little cheaper at $4.79 ea. I will have to give one a try. I have been using Fox plugs for years, and never had one blow out the seal or stem. Just lucky I guess.

Steve Helmick · « **Reply #15 on:** March 29, 2011, 08:15:42 PM »

Can we assume that Fox is still making their own glowplugs? Or is there a chance that they went along with the crowd and have Ohlsson Corp. make them? I'd like to know if Ohlsson makes them...I would then try them. I'm a fan of Ohlsson produced glowplugs.

Steve

Jim Kraft · « **Reply #16 on:** March 29, 2011, 08:43:36 PM »

Thats a good question Steve. When I first saw the new plugs I thought they looked like Thunderbolt R/C longs. The stem looks different, but the rest is the same in looks anyway. It does stand to reason that if Ohlsson is making them they would use a different stem than the others.

Jim Kraft · « **Reply #17 on:** March 29, 2011, 09:04:48 PM »

After a closer look, they are different. the Fox has the typical square bar, while the Thunderbolt has a tent shape bar. I am guessing they are Fox built plugs.

RandySmith · « **Reply #18 on:** March 30, 2011, 01:58:14 PM »

Quote from: Jim Kraft on March 29, 2011, 09:04:48 PM

After a closer look, they are different. the Fox has the typical square bar, while the Thunderbolt has a tent shape bar. I am guessing they are Fox built plugs.

Hi

The T Bolt plugs are not Fox made

Randy

Jim Kraft · « **Reply #19 on:** March 30, 2011, 02:40:27 PM »

Yes Randy; We were thinking the other way that maybe Ohlsson was making the new Fox Super Stunt plug, but I think they are still made by Fox. Does Ohlsson make T Bolt plugs? I always thought they did, but did not know for sure.

Phil Bare · « **Reply #20 on:** March 30, 2011, 06:25:29 PM »

Quote from: Kim Mortimore on March 29, 2011, 02:05:35 PM

My understanding is that when the rpm's fall off after battery disconnect, the best thing to do is to remove the plug (but don't forget to stop the engine first), place the plug in your dominant hand (or if you are Larry Fernandez either hand will do nicely), take a running start, wind up, and see how far you can hurl the plug. It seems that Fox has a knack for making products that lend themselves well to hurling.

No hurling is needed if you are at least as smart as what you are attempting to mess with. :-)