RE: *** CLUB SUPER TIGRE ***  
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: fabmaster911, GSNut
  Printable Version
       

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> RE: *** CLUB SUPER TIGRE ***
Page: <<   < prev  32 33 [34] 35 36 37 38 39 40 41   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: *** CLUB SUPER TIGRE *** - 2/15/2008 1:15:54 PM   
greengoose


 

Posts: 33
Joined: 1/29/2006
From: roswell, NM, USA
Status: offline 		Thanks pope, Now I know I'm not alone with this dilema or is it normal or is it a supertigre trait, whatever it is I don't like it, maybe because I'm a perfectionist from hell, or maybe whatever, Let's hear from someone else about supertigre excess conrod slop..

(in reply to the pope)
       Post #: 826

RE: *** CLUB SUPER TIGRE *** - 2/15/2008 1:56:39 PM   
Hobbsy



Posts: 10683
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		There has to be room for oil, if it is a perfect fit it will go up in smoke or gall in a very few seconds.

_____________________________

"I have gone faster backwards, upside down and on fire than most people have gone at all" Don Garlits

(in reply to greengoose)
       Post #: 827

RE: *** CLUB SUPER TIGRE *** - 2/15/2008 2:15:00 PM   
rcdude7


 

Posts: 1018
Joined: 4/12/2003
From: Maryland
Status: offline
quote:

ORIGINAL: greengoose

Thanks pope, Now I know I'm not alone with this dilema or is it normal or is it a supertigre trait, whatever it is I don't like it, maybe because I'm a perfectionist from hell, or maybe whatever,


What's not to like? The clearance is there to provide for oiling of the rod bushing.

Really hot engines like Jett have even looser fits in this area than ST.

(in reply to greengoose)
       Post #: 828

RE: *** CLUB SUPER TIGRE *** - 2/15/2008 3:25:18 PM   
Bax


 

Posts: 12457
Joined: 4/26/2002
From: Champaign, IL, USA
Status: offline 		A lot of times, the clicking noise is caused by the ring tapping the ports when you turn the engine by hand. How much "slop" are you seeing in the connecting rod? If you can only see oil squeeze, then you don't have "slop". If you can actually see the clearance between the rod and crank and see the rod move on the crank, then you need to check the clearance. Good rods will be as loose a .007" or even a little more...especially if you're going to be running higher RPM. Remember, if you have the engine apart, you can actually rock the rod on the crank pin or the wrist pin because of the clearance. You need it to have space for oil.

_____________________________

Bill Baxter, Manager Hobby Services/Futaba Service/North America
3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
Service Phone: 217 398-0007
Email: hobbyservices@hobbico.com

(in reply to rcdude7)
       Post #: 829

RE: *** CLUB SUPER TIGRE *** - 2/16/2008 3:21:51 AM   
greengoose


 

Posts: 33
Joined: 1/29/2006
From: roswell, NM, USA
Status: offline 		Ok Gentlemen; Just One more time, I totaly understand oil clearance in mechanical things which is if that freeplay so to speak in layman's terms does not exist then there simply is no room for lubrication and therefore you get very high temp friction heat that will really mess up your day in just a few short seconds. I failed to say in my last complaint on page 33 that this clickety clack noise increases in volume every time you go through a tankful of fuel. You see that noise is almost non existent when the engine (Super Tigre) is new in the box, the only way you can hear it is with a stethescope. but again as you go through tankfuls so does the clickety clack and that noise is apparent at 90 degrees BTDC and 90 degrees ATDC. now here is my question Bax-does the ring get hammered into place by the ports as you stated or why is a SuperTigre rod clearance incorrect out of the box when new, Does the crankpin need to wallow out the conrod to get the proper clearance for oil when bench running? I have owned OS, Rossi, GMS, Tower Hobbies, Royal,Magnum,webra, ASP, FOX with super tigre carb. And not one of these engines had the con rod clickety clack like the super Tigre. I ran that poor rossi till it screamed for an overhaul (almost 30 gallons of fuel) and it still didn't have slop in the conrod. and neither did the rest of the listed engines owned by me and I ran the living daylights out of all of them and I won't buy another Super Tigre until the conrods improve in them. Now this is my opinion and I know I'm right, all of you st fans don't let what I think scare you about a SuperTigre engine, keep flying and having fun, I might be expecting something to be too pefect, I don't know, you be the judge.......

< Message edited by greengoose -- 2/16/2008 3:33:21 AM >

(in reply to Bax)
       Post #: 830

RE: *** CLUB SUPER TIGRE *** - 2/16/2008 11:41:45 AM   
Ed Cregger



Posts: 7744
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		Are you seeing signs of metal in the exhaust residue? If not, I wouldn't worry about it until you do. After all, the engine should be under warranty, if recently purchased.

What about the possibility that your particular engine is suffering from a wild case of a "ganging of tolerances"? You know, the conrod hole is at the large end of the acceptable limit and your crankpin is at the small end of the scale, or apply the same logic to the wrist pin end?

How about the possibility of a damaged or deformed piston ring?

I know you have been around the block with model engines and that most of this, if not all of our comments, are probably common knowledge to you. If I was still concerned after this discussion, I would send the engine in for a look-see by Hobby Services. Sometimes that intuition is right on the money. I try to trust mine more as I get older. It is usually right.


Ed Cregger


_____________________________

Artisan

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

(in reply to greengoose)
       Post #: 831

RE: *** CLUB SUPER TIGRE *** - 2/16/2008 1:10:37 PM   
Hobbsy



Posts: 10683
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		Why would you go looking for non existent trouble, I have a few SuperTigres that have been used and abused since 1992 both as glow and as Diesel with no problems at all. The oldest one is finally getting tired but still runs well. Good thing you never had a MACK 711, I had an old friend in Pittsburg, Pa. who said "them MACKS doesn't even run right til you're scared to stand beside em when they're idling."

< Message edited by Hobbsy -- 2/16/2008 1:13:09 PM >

_____________________________

"I have gone faster backwards, upside down and on fire than most people have gone at all" Don Garlits

(in reply to greengoose)
       Post #: 832

RE: *** CLUB SUPER TIGRE *** - 2/16/2008 3:11:36 PM   
greengoose


 

Posts: 33
Joined: 1/29/2006
From: roswell, NM, USA
Status: offline 		Hobbsy; aren't those Italian Super Tigres that you have ? I failed to mention the st's I was having trouble with are China Tigres and what I am talking about is non existent in the Italian super Tigres. You need to get a China Tigre-You'll know exactly what I'm talking about, The design might be the same but there is a question mark on the metalurgy, for example after the fourth gallon of fuel the bearings even start to grind. and I do use after run oil faithfully mind you..

< Message edited by greengoose -- 2/16/2008 3:18:09 PM >

(in reply to Hobbsy)
       Post #: 833

RE: *** CLUB SUPER TIGRE *** - 2/16/2008 4:25:56 PM   
volion


 

Posts: 1
Joined: 8/14/2006
From: Laval, QC, CANADA
Status: offline 		HI,
I have a question concerning the installation of ST-75 in a P-51 (from H-9).
I bought a Slimline Sport Scale muffler (from Towers) and it fits well in cowl.
Muffler does not have a pressure port/nipple. Do I have to install one and if yes
where is the best location.

Thanks.

(in reply to greengoose)
       Post #: 834

RE: *** CLUB SUPER TIGRE *** - 2/16/2008 5:26:59 PM   
Ed Cregger



Posts: 7744
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		If you have the space inside the cowl, place the pressure nipple dead opposite the exhaust stack, so that the exhaust blows directly into the open end of the pressure nipple. Then there can be no doubt that your pressure nipple is in a positive pressure area.

I know it seems impossible, but there are places in the muffler where you can end up with insufficient pressure or almost no pressure at all. I hesitate to call any place inside the muffler a negative pressure area, but if it is in an area where the positive pressure is insufficient to push the fuel as much as needed, it is a negative pressure area compared to the pressure needed to supply adequate fuel.

I've seen a few cast mufflers in the past that had very tempting spots on them that turned out to provide less pressure than needed.

The good part about it though, is that if you do stumble across a "negative/insufficient pressure" area, it can be filled with a bolt and then another area can be drilled and tapped.


Ed Cregger


_____________________________

Artisan

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

(in reply to volion)
       Post #: 835

RE: *** CLUB SUPER TIGRE *** - 2/16/2008 7:32:25 PM   
Ralphbf



Posts: 1247
Joined: 3/15/2004
From: Woodland, CA, USA
Status: offline 		I have both flavors of ST engines Chinese and Italian.

I like the Chinese better. They seem to run stronger.

As far as durability, who ever really wears out a Super Tigre.

What fuel are you running? Not all fuels are compatible with after run oil.

Automatic trany fluid is probably the best After Run Oil.


_____________________________

Ralph

(in reply to greengoose)
       Post #: 836

RE: *** CLUB SUPER TIGRE *** - 2/17/2008 2:06:49 AM   
greengoose


 

Posts: 33
Joined: 1/29/2006
From: roswell, NM, USA
Status: offline 		I'm using 5% nitro 18% oil castor synthetic tower brand or wildcat fuel. I use air tool oil for after run as marvel mystery oil would ruin glow plugs.

(in reply to Ralphbf)
       Post #: 837

RE: *** CLUB SUPER TIGRE *** - 2/19/2008 3:57:54 AM   
lalo


 

Posts: 24
Joined: 11/14/2002
From: mexico city, MEXICO
Status: offline 		i have a st 45, and I am planning to use it in a hangar 9 mentor t-45, the atock muffler is to bulky and can not fit in the hole of the firewall provided for it, there is not space to fit a pitts muffler, because the nose wheel goes under de engine.
which muffler can be used to replace the stock one and will not give me power troubles
thanks
lalo

(in reply to XJet)
       Post #: 838

RE: *** CLUB SUPER TIGRE *** - 2/19/2008 10:11:54 PM   
Alex570


 

Posts: 71
Joined: 3/31/2006
From: West Sunbury, PA, USA
Status: offline 		What are some smaller mufflers that will fit on a GS-40? Also is Hobbico after run oil any good? Thats what I have.

_____________________________

what?

(in reply to lalo)
       Post #: 839

RE: *** CLUB SUPER TIGRE *** - 2/20/2008 2:10:43 PM   
capt_buford@peoplepc.com


 

Posts: 42
Joined: 2/13/2005
From: Lebanon, KY, USA
Status: offline 		Lalo,
Do you have the stock 2 piece muffler?
Tower Hobbies has a 1 piece muffler Tower Hobbies # supg1563. It fits my Italian g21 .46 perfectly. It looks like a typical O. S. muffler.
It is for a GS 40 and 45.

(in reply to lalo)