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RE: worst engine ever - 4/30/2008 5:18:42 AM   
kerwin50


 

Posts: 418
Joined: 10/18/2006
From: winston, MO, USA
Status: offline 		Mine was the OS 40 fp and every time I came across 1 and tried to use it the same thing it would not hold a needle setting.
I have had the fox 40,45 61, and 74 and all I can say is they are the most powerful engines I have ever owned.
Back in the mid 90's I sold most of my stuff and in 2002 I started flying again. The only reason I didn't by fox was the price The best engine I have ever owned is the TT pro 46 GREAT ENGINE

(in reply to Dan Vincent)
       Post #: 101

RE: worst engine ever - 4/30/2008 5:36:42 AM   
Ed Cregger



Posts: 7484
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline
quote:

ORIGINAL: WhiteRook

well, everybody has their own opinion , but i think fox engines are tougher than most, i bought
one used that had been sitting for 10 years , and it fired right up on three spins of the prop, their tollerances are some of the best there are, BUT , as with many engines the carbs are
trouble, they did make a perry sub , but i haven't seen one arround



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I am not saying that you are wrong, WhiteRook. All we have are our own experiences to relate to others and perhaps some experiences of other folks that are close to us.

I know that Fox engines can be expected to really deliver the power. So, if I get one that isn't, I know to send it back and have the Duke wave his magic wand over mine. Many other engine brands are out there, but I wouldn't send them back unless I knew there was a defect. With the Fox engines (in the past), I knew that they would receive special attention if they were down a few hundred rpm, or that idle/transition could be made better. I expected more of Fox - not less.


Ed Cregger


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Artisan

"Flying models since the Fifties - I'll get the hang of this yet!!!"

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       Post #: 102

RE: worst engine ever - 4/30/2008 5:58:12 AM   
dieselgasman


 

Posts: 5
Joined: 3/16/2008
From: Penrith, AUSTRALIA
Status: offline 		NEED BLOODY HELP!!!!
Worst engine i have is the MDS .48. Got a 10cc tank, runs for quarter tank, cuts out, runs quarter tank,cuts out, runs quarter tank, cuts out and then will run to empty. (great engine eh )
Suppose, it is saving me fuel, and i get a lot of practice at dead stick landings.

Got it sorted out to be a carby problem. Can ANYBODY please tell me what carby will fit in place of the STUPID C2 that is supposed to be better than the first carby. Bloody great engine when its running, it would be nice if it stayed running.
NEED REPLACEMENT CARBY!!!!! PLEASE. (has a .55 inch O.D on carby base)

(in reply to Ed Cregger)
       Post #: 103

RE: worst engine ever - 4/30/2008 6:00:00 AM   
dieselgasman


 

Posts: 5
Joined: 3/16/2008
From: Penrith, AUSTRALIA
Status: offline 		Mind you, the MDS.18 i have will pull the foreskin off a dead dog.

(in reply to dieselgasman)
       Post #: 104

RE: worst engine ever - 4/30/2008 6:33:07 AM   
Ed Cregger



Posts: 7484
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		Defective carbs do not run for a quarter tank and then cause the engine to quit.

Is the engine overheated when it quits? This could point to too lean a mixture, loose backplate or carb mount (air leak), too much nitro, too hot of a glow plug, larger prop than normal and adjusting for peak power (too lean), etc.

I would suspect that your model's fuel tank system is defective in some way. Any solid contact between the fuel tank and the model can cause fuel foaming (actually bubbling). This will cause the tuner to adjust the needles improperly to compensate for the bubbles in the fuel. Once airborne, the model's resonant frequency changes (not touching the Earth any longer) and the fuel foaming or bubbling, may become worse, or disappear altogether. When the latter happens, the previously adjusted mixture needles are now at incorrect settings. Many times the mixture will become leaner than it should be. Consequently, the engine will over heat and quit.

The best solution is to surround your fuel tank with loosely packed foam rubber and do not let any part of the fuel tank touch the model, including the fuel tank neck passing through the firewall. Friends, this is the most idiotic step backwards in modeling technology that I have ever seen in my half a century in this hobby. That and returning to flat bottomed airfoiled wings for trainers. Both are just plain stupid.


Ed Cregger


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Artisan

"Flying models since the Fifties - I'll get the hang of this yet!!!"

(in reply to dieselgasman)
       Post #: 105

RE: worst engine ever - 4/30/2008 6:37:52 AM   
Telemaster Sales UK


 

Posts: 52
Joined: 4/20/2008
From: ShrewsburyShropshire, UNITED KINGDOM
Status: offline 		Hi Dieselgas Man

Dave Davis here in the Old Country, it's quarter past six in the morning, must be evening-time in Oz. I worked in Australia in the late Seventies, mostly for the ANR in the bush of South Australia. Fond memories of opening the batting for the railway against teams of shearers on Sunday afternoons!

Regarding your MDS there are two solutions to your problem.

1. Fit a carburettor from a Super Tigre, this was a popular modification when the MDS was first imported here about twenty years ago, (how time flies!)

2. Fit a 13.9mm carburettor from Just Engines which are specifically made for the MDS. There are three types avaiable The JEN "TN" and "Series 3" and the JEN "TN2." They all cost £17.50 plus carriage.

I've never owned an MDS, thank God! I've seen too many repetitions of your experience with them but I used to own an old OS 40 twin ball race job with a worn carby. Bought a JEN replacement and it ran perfectly. Lent the engine to my pal but when he died his girlfriend's nephews hoovered up every thing that wasn't screwed to the floor and so it went out of my life.

I've never actually seen an MDS running on a Super Tigre carb but that was the popular mod with the 40.

I would recommend Just Engines unreservedly to anybody, I've always had excellent service from them and they send stuff all over the world. One bloke even wrote to them from Southern Bulgaria claiming he'd ordered an engine on a Tuesday and it arrived on the Friday!

Talking of Southern Bulgaria I rode my Triumph through there on my way to Galipolli last year for Anzac Day, spending some of my redundancy money. Took me four and a half days to cover 4000kms. Met a young fellah from Sidney called Mick Hurst and a journalist called Anne Turner from Queensland who's now moved to Kalgoorlie with a promotion. We still keep in touch via email.

Just Engines web address is :www.justengines.co.uk. If you want a nice gentle Telemaster to put your MDS in I can supply one! Please visit my website on :www.telemastersalesuk.co.uk.

Happy landings

DD




(in reply to dieselgasman)
       Post #: 106

RE: worst engine ever - 4/30/2008 6:50:11 AM   
Telemaster Sales UK


 

Posts: 52
Joined: 4/20/2008
From: ShrewsburyShropshire, UNITED KINGDOM
Status: offline 		What's the problem with flat bottomed wing sections on trainers Ed?

I've taught lots of people to fly on vintage/old timer models with flat bottomed wing sections. I even learned on a Junior 60, a popular design over here which dates from 1946 and features an under-cambered wing section.

Agreed these do not fly well in a wind and modern semi-symmetrical or fully symmetrical ARTFs do cope with the wind very well, but will a beginner learn anything if his model is being blown all over the sky, especially the older guys with slower reactions?

I like your American Telemasters as trainers, but feel that I should declare an interest!

Happy Landings

Dave Davis

(in reply to Ed Cregger)
       Post #: 107

RE: worst engine ever - 4/30/2008 7:05:59 AM   
Ed Cregger



Posts: 7484
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline
quote:

ORIGINAL: Telemaster Sales UK

What's the problem with flat bottomed wing sections on trainers Ed?

I've taught lots of people to fly on vintage/old timer models with flat bottomed wing sections. I even learned on a Junior 60, a popular design over here which dates from 1946 and features an under-cambered wing section.

Agreed these do not fly well in a wind and modern semi-symmetrical or fully symmetrical ARTFs do cope with the wind very well, but will a beginner learn anything if his model is being blown all over the sky, especially the older guys with slower reactions?

I like your American Telemasters as trainers, but feel that I should declare an interest!

Happy Landings

Dave Davis



-


This would be a truly great discussion, should we allow it to develop. How about starting a new thread about, "Flat bottomed airfoiled versus symmetrical airfoiled trainers"?


Ed Cregger


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Artisan

"Flying models since the Fifties - I'll get the hang of this yet!!!"

(in reply to Telemaster Sales UK)
       Post #: 108

RE: worst engine ever - 4/30/2008 7:47:50 AM   
Telemaster Sales UK


 

Posts: 52
Joined: 4/20/2008
From: ShrewsburyShropshire, UNITED KINGDOM
Status: offline 		Ok Ed, my computer skills are worse than my flying ability! If you want to start a new thread, I'll join in.

Must jump into the shower and get off to work delivering new Jaguar cars. It's a tough job etc.....

DD

(in reply to Ed Cregger)
       Post #: 109

RE: worst engine ever - 4/30/2008 9:05:10 AM   
dieselgasman


 

Posts: 5
Joined: 3/16/2008
From: Penrith, AUSTRALIA
Status: offline 		Firstly, thank you VERY much to Dave for ACTUALLY helping me, after i get through this i will be visiting BOTH websites. Secondly, Ed, yeh you have been flying planes since before i was born, this does not mean i'm an idiot. I have EVERYTHING wrapped in foam(all loose), the engine has nothing loose, leaking, cracked, broken, fartin, burpin etc. The engine is tighter than a......snare drum.
The fuel i use has nothing to do with it. Tried 80/20, 5%, 7.5%, 10% and 15% nitro. Changed more plugs than i have had baked dinners(thats a fair few BTW) And the fuel cannot foam, I add one(1) drop of amourall to every 2.5litres of fuel i mix. And, finally, straight after the engine has run, i can put my hand on the entire case for at last 5 seconds, this tells me that it aint lean.
Now the only thing left is the carby. I have also placed fuel tubing to stop any leaking air, if any, from leaning the mixture out. All "O" rings are in perfect order and have already been replaced to make sure it was not them.
Dont think i have left out anything. Please feel free to let me know if i have missed something. Since i have told you everything i know, might as well tell you too, i have red undies on.
Thanks.

(in reply to Telemaster Sales UK)
       Post #: 110

RE: worst engine ever - 4/30/2008 10:14:50 AM   
Ed Cregger



Posts: 7484
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		Well, lets see - maybe someone cast a voodoo spell on your engine?

Me, I don't believe in magic, just cause and effect. There is nothing in a carburetor (such as a timer) that will wait four or five seconds, minutes, or whatever, before affecting the job that it does.

Now if that offends you, well, I did the best that I could do with the information that I had available. Nowhere did I treat you as though you were an idiot.

When we old timers answer questions on the forums, we know from experience that there are thousands of other folks with the same problem as yourself that are looking for an answer, just like you. So, we cover other eventualities that you may have already tried. It's not all about you. Remove that chip from your shoulder and you'll have more friends.


Ed Cregger


_____________________________

Artisan

"Flying models since the Fifties - I'll get the hang of this yet!!!"

(in reply to dieselgasman)
       Post #: 111

RE: worst engine ever - 4/30/2008 10:42:37 AM   
dieselgasman


 

Posts: 5
Joined: 3/16/2008
From: Penrith, AUSTRALIA
Status: offline 		Ahhhhh, Thanks

(in reply to Ed Cregger)
       Post #: 112

RE: worst engine ever - 4/30/2008 11:54:00 AM   
gunfighterII



Posts: 2193
Joined: 11/28/2004
From: Lincoln, NE, USA
Status: offline 		Maybe I missed something here, but why would you put armorall in your fuel?

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       Post #: 113

RE: worst engine ever - 4/30/2008 12:18:33 PM   
Dan Vincent


 

Posts: 909
Joined: 7/13/2003
From: Sanford, FL, USA
Status: offline 		Ed, back in 1951 a freind let me fly his control line Testors trainer with McCoy .09. It had a flat bottom airfoil.

Within minutes I had it down and could fly level. Very quickly I wished it had a symetrical airfoil so I could do something else but fly level.

I vowed never to build or fly another flat bottom CL model.

RC is a little different as a lot of guys like to fly a slow-mover and just relax watching it thermal around. They also seem to be getting larger so old eyes can still see them.

(in reply to Ed Cregger)
       Post #: 114

RE: worst engine ever - 4/30/2008 2:22:43 PM   
blw



Posts: 4454
Joined: 3/15/2004
From: Auburn, AL, USA
Status: offline 		A few drops of Armor All would help lessen the foaming action of glow fuel. It would also shorten glow plug life. It is best to wrap the tank properly, etc.

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The ultimate responsibility of pilots is to fulfill the dreams of the countless millions who can only stare skyward...and wish.

(in reply to Dan Vincent)