Re: How about this!  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> Re: How about this!
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Re: How about this! - 5/15/2002 9:15:57 PM   
Volfy



Posts: 3227
Joined: 1/4/2002
From: Houston, TX, USA
Status: offline 		[QUOTE]Originally posted by rwh
With all these replys about the cost of four stroke plugs, I'm surprised that no one has mentioned the best way to reduce the cost of plugs.

On board glow!

With a decent on board glow system almost any plug will work fine! ...and no worries about idle! [/QUOTE]
Amen, rwh. I just couldn't bring myself to pay that much for a plug, even if it really is superior. I've used Fox Miracle plugs and ASP "F" clone plugs with on-board glow driver, all with good success.

While the size & weight of the sub-C battery I use may be a concern in .40-size of smaller plane, it is hardly noticeable in larger ones. The added convenience of onboard glow along is worth the while.

BTW, a well-managed LHS doesn't need to charge any more than advertised mail-order prices. In fact, in my observation, those that can match or beat advertised magazine prices tend to do better and stay healthier than those who believe it is their g*d given right to overcharge, and every modeler's sworn duty to overpay. Just my $0.02.

< Message edited by Volfy-RCU -- May 15 2002 4:22PM >

_____________________________

Si vis pacem, para bellum.

(in reply to Dazzler)
       Post #: 26

Re: Re: How about this! - 5/15/2002 11:11:16 PM   
Sport_Pilot



Posts: 7651
Joined: 1/21/2002
From: Acworth, GA, USA
Status: offline 		[QUOTE]Originally posted by Volfy

those who believe it is their g*d given right to overcharge, and every modeler's sworn duty to overpay. Just my $0.02. [/QUOTE]

Actually it is their God given right, and even their right in this country. But they make the mistake that it's not ANY modeler's sworn duty to overpay.

(in reply to Dazzler)
       Post #: 27

why are OS Type F glow plugs so expensive? - 5/16/2002 11:55:05 PM   
Steve Collins


 

Posts: 2116
Joined: 12/21/2001
From: St.Charles, MO, USA
Status: offline 		I have 4 4stroke engines which I have had for a number of years: An OS .70, an OS .91, an OS 1.20, and a YS .63. In all of the runs of all of the engines, I am still using the original OS-F plugs. The OS engines have been run on as high as 40% nitro. When I bought my first 4stoke OS, I bought three or four spare plugs for the flight box. I did not use any of them at all until I bought the new YS earlier this year which did not come with a plug.

I am not ready to say that the OS-F is the best plug out there because there may be many other good ones. It is just that, with my experience, there isn't any reason to experiment. Now, if 4 strokers blew plugs after a few flights, I might find reason to crab about the cost of the OS plug but my experience shows that their longevity is counted in years of use rather than just a few runs of the engine.

(in reply to Dazzler)
       Post #: 28

why are OS Type F glow plugs so expensive? - 5/17/2002 12:50:27 AM   
mrc100


 

Posts: 225
Joined: 3/9/2002
From: Rochester, NY, USA
Status: offline 		I'm with aptar. I've always used the OS F plug in my YS and moki engines. I change them out after two years of use and have never had one fail.

I get more enjoyment out of this hobby when I reach a point where I have complete confidence in my equipment. It really doesn't come down to an economy thing for me. The more confidence in the equipment the better I fly and the more I enjoy the hobby. Considering the amount of $$ you pump into these models...the glow plug is fairly cheap (even the expensive ones).

When's the last time you heard something negative regarding the OS plugs quaility. They are just solid performers.

Now i don't have experience with other plugs and if I had positive experiences with a, say Enya, I'd probably continue to use it.

Why are they so expensive? We continue to buy them as fast as they are made. supply vs. demand.

Have fun.

Mike

(in reply to Dazzler)
       Post #: 29

why are OS Type F glow plugs so expensive? - 5/17/2002 12:53:11 AM   
Ladyflyer



Posts: 1035
Joined: 1/13/2002
From: North Am, PA, USA
Status: offline 		Sport_pilot quote:

" One mistake I often see is that people often tune their engines on one plug check the RPM, switch plugs and check RPM again, then exclaim that the former plug gave them the best RPM and transition. WRONG you will almost always have worst "

I don't recall ever seeing anyone fail to retune when comparing plugs ! I will watch more closely from now on.
I usually try 3 or 4 plugs in each new engine type , but with all the 4 strokes Enya to YS ,53 to 140 ,the Enya #3 comes ot the winner . I don't mind at all , I carry 1 spare and I usually wind up giving it to someone who just popped his last whatever brand plug.

_____________________________

LF
When they have to say "NO FEAR" it really means NO SENSE.

(in reply to Dazzler)
       Post #: 30

why are OS Type F glow plugs so expensive? - 5/17/2002 1:32:08 AM   
bigbri


 

Posts: 559
Joined: 2/11/2002
From: salem, MA, USA
Status: offline 		I am sure other plugs will work fine, It is just OS type- F work awesome....I tried other without success, including an Enya # Sorry I will stik with my OS. I just replace an OS type-F after 3 years of great service. I can deal with that kind of atrition.
Brian

(in reply to Dazzler)
       Post #: 31

Re: How about this! - 5/17/2002 2:35:44 AM   
visioneer_one



Posts: 2414
Joined: 12/12/2001
From: St. Thomas, VIRGIN ISLANDS (USA)
Status: offline 		[QUOTE]Originally posted by rwh
With all these replys about the cost of four stroke plugs, I'm surprised that no one has mentioned the best way to reduce the cost of plugs.

On board glow!

With a decent on board glow system almost any plug will work fine! ...and no worries about idle! [/QUOTE]

Spending fifty cents to save a quarter. Your LHS owner must love to see yuo walk thru the door

I prefer to tun my engines on the rich side - which dovetails nicely with the 'hot' OS F plugs. The last time I tried using a cheap plug I had to lean the low end far too much for my liking in order to achieve a smooth idle. With an 'F' plug in there my little YS and OS engines tick over reliably at low idle settings. You know - so I can land.

I've been running 15% and 20% fuel for a while and they have been working quite well. I've recently started running 30% nitro in my small YS motors with sparkling results - and have yet to blow a plug.

< Message edited by visioneer_one -- Jun 28 2002 10:45PM >

(in reply to Dazzler)
       Post #: 32

why are OS Type F glow plugs so expensive? - 5/17/2002 4:45:33 AM   
littlepiston



Posts: 1114
Joined: 1/24/2002
From: carlsbad, NM, USA
Status: offline 		stupid question but,, what is "LHS" sorry for being so stupid

(in reply to Dazzler)
       Post #: 33

4 stroke plugs & LHS - 5/17/2002 4:52:40 AM   
Bone



Posts: 321
Joined: 3/15/2002
From: GraftonNSW, AUSTRALIA
Status: offline 		Don't worry - this hobby is full of jargon & stuff.

"LHS" = Local Hobby Shop

(in reply to Dazzler)
       Post #: 34

why are OS Type F glow plugs so expensive? - 5/17/2002 4:52:42 AM   
littlepiston



Posts: 1114
Joined: 1/24/2002
From: carlsbad, NM, USA
Status: offline 		oh well maybe? "Local Hobby Store"

(in reply to Dazzler)
       Post #: 35

why are OS Type F glow plugs so expensive? - 5/17/2002 4:55:01 AM   
littlepiston



Posts: 1114
Joined: 1/24/2002
From: carlsbad, NM, USA
Status: offline 		well me closes LHS,,,, eH! is 150 miles away

(in reply to Dazzler)
       Post #: 36

why are OS Type F glow plugs so expensive? - 5/17/2002 6:29:12 PM   
visioneer_one



Posts: 2414
Joined: 12/12/2001
From: St. Thomas, VIRGIN ISLANDS (USA)
Status: offline 		[QUOTE]Originally posted by littlepiston
well me closes LHS,,,, eH! is 150 miles away [/QUOTE]
My closest LHS is 70 miles away. By plane. (located in Puerto Rico)

Mail order only for me!

< Message edited by visioneer_one -- Jun 28 2002 10:46PM >

(in reply to Dazzler)
       Post #: 37

why are OS Type F glow plugs so expensive? - 5/17/2002 6:43:39 PM   
Sport_Pilot



Posts: 7651
Joined: 1/21/2002
From: Acworth, GA, USA
Status: offline 		As I recall the Enya #3 didn't do well in the four stroke engine I tried it on, a Thunder Tiger FS.91. Did ok on runup, but could not get it to idle well (high idle speed) and didn't transition well. Not to say that it doesn't run well on other four strokes, especially YS. There are several ways to get a plug to run hotter, the most commen to make the wire thinner, next is to make the wire longer, and Duke Fox's and OS's favorite add more exotic alloy's. Looking at the Enya #3 compared to a #4, sure looks thinner to me, though it could have high allow content. Now the 4 stroke plugs are made longer to improve heat retention and a hotter plug at idle, adding more alloy will make the plug hotter especially at idle.

The only cheap plug Fox makes is the R/C Long. Unfortunatley I never see any of their other plugs at the local hobby shop, its as though they want every one think that Fox only has cheap plugs.

You can run high nitro fuel with hot plugs, but you are running a much richer mixture to drown out the plug. If your engine leans out when your fuel is almost empty or during manuvers, you WILL have detonation, it may be so brief or the power level so low that you don't notice it but it will be there doing harm to you engine. If you are going to be using 20% or higher nitro I recommend expermenting with other plugs. You will also save some expensive high nitro fuel.

BTW about the only other plug I can find on pattern competition equipment lists other than OS is the K&B 4C.

(in reply to Dazzler)
       Post #: 38

Plug info - 5/17/2002 7:04:28 PM   
mrc100


 

Posts: 225
Joined: 3/9/2002
From: Rochester, NY, USA
Status: offline 		Thought the following information might be of interest.

Mike


General Glow Plug Information - Consolidated

By James McCarty



OS Glow Plug Information



Plug

Type Temperature Description

No. 8 Hot Recommended for most current O.S. (and other) 2-stroke engines

Type F Mildly Hot Special long-reach plug recommended exclusively for O.S (and other) 4-stroke engines

Type RE Hot Special long-reach plug designed exclusively for O.S. Wankel rotary engine

A5 Cold Recommended for most current O.S. (and many other) 2-stroke engines particularly for 1/10th & 1/8th scale off-road car engines

A3 Hot Dependable O.S. quality makes A3 the most durable and longest-lasting glow plug available at an economical price

R5 Very Cold Recommended for high-nitro fuel and high r.p.m. engines, particularly 1/8th track racing car engines



ENYA Glow Plug Information
Plug Plug
Number Temperature Range / Suggested Use

3