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RE: worst engine ever - 5/1/2008 1:22:53 PM   
Enrique-F3A


 

Posts: 74
Joined: 10/27/2003
From: Caracas, VENEZUELA
Status: offline 		The worst I have had was a YS 91 FZ

(in reply to Telemaster Sales UK)
       Post #: 126

RE: worst engine ever - 5/1/2008 2:27:41 PM   
Ed Cregger



Posts: 7746
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline
quote:

ORIGINAL: Enrique-F3A

The worst I have had was a YS 91 FZ




-


Was that the first edition with the titanium piston? Lots of Americans broke pistons using too much nitro with the first edition. That was the last low/no nitro engine that YS made, IIRC.


Ed Cregger


_____________________________

Artisan

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

(in reply to Enrique-F3A)
       Post #: 127

RE: worst engine ever - 5/1/2008 2:50:03 PM   
mike109



Posts: 132
Joined: 7/25/2004
From: DubboNew South Wales, AUSTRALIA
Status: offline 		My "worst" engine was an Austrlian Taipan 15 diesel. As an 11 year old, I just could not start it. So I sold it and bought an OS 15 II and never looked back.

Actually the Taipan was a really nice engine and if I still had it it would be quite valuable. I still have the remains of the OS. Starting it for the first time led to bloody fingers but we got there in the end. I think we were tougher (or more stupid) in those days.

I also had (and still have) a really nasty Super Tigre G20 15D diesel. It was made from cast off parts and worn out parts. (We were kids and we did not have much cash then so any motor that we could get was going to be used). It would run and run and run but it was totally clapped out. We called it "Joe Superloose" and if you got it tuned right you could win races with it. But get it slightly overcompressed or lean and it would slow down but not stop and you would have to limp along until the fuel ran out. Very embarrassing. Despite this, it would start easily hot or cold but with a Bartel's fibreglass prop it was deadly on the fingers and by this time I had learned to always use some form of finger protection.

_____________________________

If it''s not right on the ground - it won''t get better in the air. Club Saito # 597

(in reply to Ed Cregger)
       Post #: 128

RE: worst engine ever - 5/1/2008 10:17:38 PM   
Enrique-F3A


 

Posts: 74
Joined: 10/27/2003
From: Caracas, VENEZUELA
Status: offline 		Ed,

Mine did not break the piston but, trying to run it after break in, I had some dead sticks and crashed the airplane. I finally knew that it (mine) only runs properly on 30 % nitro. I send it back to YS performance but they did not repaired the engine. I can not use it as 30 % nitro is extremely costly in our country. It is not only my case, a friend of mine that has a 91 FZ too, crashed his model for the same reason, he used 15 % nitro instead 30 % and had a fatal dead stick.

(in reply to Ed Cregger)
       Post #: 129

RE: worst engine ever - 5/2/2008 4:52:14 AM   
Ed Cregger



Posts: 7746
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		Sorry to hear of you and your friend's crashes. That's never fun.


Ed Cregger


_____________________________

Artisan

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

(in reply to Enrique-F3A)
       Post #: 130

RE: worst engine ever - 5/2/2008 4:08:02 PM   
blw



Posts: 4569
Joined: 3/15/2004
From: Auburn, AL, USA
Status: offline
quote:

ORIGINAL: mike109

I also had (and still have) a really nasty Super Tigre G20 15D diesel. It was made from cast off parts and worn out parts. (We were kids and we did not have much cash then so any motor that we could get was going to be used). It would run and run and run but it was totally clapped out. We called it "Joe Superloose" and if you got it tuned right you could win races with it. But get it slightly overcompressed or lean and it would slow down but not stop and you would have to limp along until the fuel ran out. Very embarrassing. Despite this, it would start easily hot or cold but with a Bartel's fibreglass prop it was deadly on the fingers and by this time I had learned to always use some form of finger protection.


That is a great story. I bet you had a ton of fun with that engine. Something about being a kid makes things like that more fun that possible nowadays.

_____________________________

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

(in reply to mike109)
       Post #: 131

RE: worst engine ever - 5/3/2008 7:16:50 AM   
Telemaster Sales UK


 

Posts: 55
Joined: 4/20/2008
From: ShrewsburyShropshire, UNITED KINGDOM
Status: offline 		Morning Diesel Gas Man

I'd be interested in hearing how things go with the replacement carburettor for the MDS if you decide to go down that route.

If ever I get back to Oz I'll visit the museum in Canberra with that Albatross fighter on display, probably the best example in the world.

Talking of WW1, I plan to visit the Somme on the bike for the commemoration on 1st July when nearly 20,000 were killed on the first morning. Last time I went I used a push-bike and met a couple of Australians in a Citoen 2CV. I showed them where the Australians had fought. We took the front wheel off the bike and drove around with the forks sticking out of the roof of the car!

Well I'm rambling. This is an aeromodelling site and I'm beginning to go off the subject, however, if you're interested in my trip to Galipolli last year please contact me at: sales@telemastersalesuk.co.uk. I've written an account of the journey and will send you a copy.


Happy Landings

DD


(in reply to dieselgasman)
       Post #: 132

RE: worst engine ever - 5/3/2008 7:35:09 AM   
Telemaster Sales UK


 

Posts: 55
Joined: 4/20/2008
From: ShrewsburyShropshire, UNITED KINGDOM
Status: offline 		Hi Ed

Isn't it funny, I've never had a problem with the OS40 FP. I've had two, both bought second-hand and both ran well. One had a slight castor stain on the cylinder. In an attempt to soften the oil prior to cleaning I put the engine in the oven. I then forgot about it. When I took the engine out of the oven, the oil had gone but so had all of the silver paint which OS use to paint their engines! Yet it still ran well.

I put it in one of those execrable Precedent Hi-Boys and sold the two of them with a radio for over £90 ($180) in an auction several years ago. Was I pleased!

I suppose OS produce thousands of engines so the occasional bad one might just slip through. With used engines you never know their history. Someone may have run them in too lean or damaged the caburettor in some way resulting in eratic running. I've never had a problem with any of the FPs.

About the down-wind turn Ed, what do you tell beginners about this manoevre? I normally say that the model will be travelling very rapidly on the down-wind leg but that the airflow over the control surfaces may be less than on the up-wind or cross wind legs, consequently requiring greater input from the pilot.

As always, it's a question of balancing elevator and rudder, (ailerons on a four channel model) and this ability is only acquired with experience.

Happy Landings

Dave Davis

(in reply to Ed Cregger)
       Post #: 133

RE: worst engine ever - 5/3/2008 7:54:28 AM   
mike109



Posts: 132
Joined: 7/25/2004
From: DubboNew South Wales, AUSTRALIA
Status: offline 		G'day When I started flying control line way back about 1960, I used to make money from mowing lawns and similar activities. I also got about $1 a week for pocket money and all this went into supporting my "balsa wood habit". I used to sweat for each Sunday afternoon so I could go flying only to be constantly damaging engines in prangs, burning out plugs and breaking props. My first OS 15 was pretty well clapped after about two years. I suspect I was running it too lean. It got to the poingt eventually where it was using a plug a flight and on my small income, this was just not on. Despite all this we had a great time watching the "experts" who build magnificent stunt models with Fox and Merco 35s and who would turn up each comp day with Fox 36 powered brown paper covered Smoothies to use and abuse in combat. I remember the team race teams trying to find reliable powerful engines. ETA 15s were tried but were really savage to start, ETA 29s liked to catch fire and Oliver Tiger 15s were impossible to get. One of the most reliable engines was the Enya 15D.

Actually ,I have been thinking of all the engines I have ever had and the worst by far was a small Davis Charlton diesel of about 0.8cc. It was so badly made that as the liner was tightened into the crank case, it would distort and cause the piston to seize. I managed to get it to fire but never to actually run. I have had lots of glow engines all of them have done what I wanted although a Fox 35 I had was really savage on fingers when starting. I never managed to get it run in and sold it without ever taming it. They are usually such easy to use engines (or so I am told.).

_____________________________

If it''s not right on the ground - it won''t get better in the air. Club Saito # 597

(in reply to blw)
       Post #: 134

RE: worst engine ever - 5/5/2008 12:45:02 AM   
chevy43


 

Posts: 1023
Joined: 6/9/2006
From: Santa Cruz, CA, USA
Status: offline
quote:

ORIGINAL: dieselgasman

Gunfighter, the amourall stops the fuel foaming. I only put in a TINY amount. One drop per 2.5litres.
Cheers


Silicone brake fluid turns to sand in the combustion chamber. I know this from experience from a leaking hydrovac! I would never use Armorall ( mostly silicone) in fuel. Test it by burning it under the direct flame of a plumbers torch and see what the residue is....

(in reply to dieselgasman)
       Post #: 135

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