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: none
  Printable Version
       

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> RE: *** CLUB SUPER TIGRE ***
Page: <<   < prev  5 6 [7] 8 9 10 11 12 13 14   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: *** CLUB SUPER TIGRE *** - 1/15/2007 2:34:05 AM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		One method of adding afterrun oil is to remove the glow plug and add it there. I think that I may start doing it this way. I ofter ask people if the use after-run oil and all the people I fly with say they don't use it. I am religious in useing it and I like to use about 25 drops no more no less.

_____________________________

Buzz

(in reply to buzzingb)
       Post #: 151

RE: *** CLUB SUPER TIGRE *** - 1/15/2007 2:36:11 AM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		The only problem I see with this after-run oil is that it delays starts a few seconds and almost makes hand starts impossible at times because of the oil getting on the glowplug element. I find that I have spin the starter a few times till it gets blown off the plug before my engines will start.

_____________________________

Buzz

(in reply to buzzingb)
       Post #: 152

RE: *** CLUB SUPER TIGRE *** - 1/15/2007 2:44:50 AM   
alan0899


 

Posts: 2022
Joined: 4/17/2006
From: Cundletown, NSW, AUSTRALIA
Status: offline 		G'day Mate,
There is no point putting ARO in through the glow plug hole, 1: it won't get into the bearings where it needs to be & 2: you will eventually wear out the glow plug threads in the head.


< Message edited by alan0899 -- 1/15/2007 2:54:23 AM >

_____________________________

Good Flyin Mate. Keep Thyne Airspeed up, lest the ground arise & smite thee, Allan.

(in reply to buzzingb)
       Post #: 153

RE: *** CLUB SUPER TIGRE *** - 1/15/2007 2:50:48 AM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		I was adding it to the carb through an air filter but got to thinking about the dust that I was also flushing into the engine through the air filter element. Removing the filter is too much of a headache. The oild in the glowplug hole will reach the bearing though ports etc. but will require tilting motor forward.

_____________________________

Buzz

(in reply to alan0899)
       Post #: 154

RE: *** CLUB SUPER TIGRE *** - 1/15/2007 4:54:59 AM   
XJet


 

Posts: 3451
Joined: 3/31/2003
From: Tokoroa, NEW ZEALAND
Status: offline 		I've got to say that if you use a *good* oil (with at least some castor in it), ARO is really not necessary in a 2-stroke engine.

I've *never* lost bearings in any 2-stroke due to rust or corrosion, and that's in some 45 years of modelling -- perhaps because I've always used a touch of castor.

In my 4-strokes I *do* use ARO, but that's because the oil in the bearings is contaiminated with combustion byproducts and becomes slightly corrosive anyway.

The oil in a 2-stroke's bearings is placed their by unburnt fuel -- so it should contain no corrosive combustion byproducts.

Even 2-3% castor seems to be enough to provide a much-needed film that keeps atmospheric oxygen from getting at the balls, cages and races.

_____________________________

When I'm not here, I'm at RCModelReviews

(in reply to buzzingb)
       Post #: 155

RE: *** CLUB SUPER TIGRE *** - 1/16/2007 11:54:33 PM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		After I have pulled the back cover off a few engine and saw the remaining fuel/oil left in the crankcase I will continue to use the afterrun oil. The humidity in MS is just too great to take a chance on rust with all that nitro and methanol. If I lived in the drier areas of the country I would consider not useing it. I believe it also helps on startup and helps with the carbon on top of the piston and possibly helps till the piston expands up to size and the engine warms up. Not sure about that last one as I don't know how long it remains in the engine as the engine is reved up. It may be possible that a film of oil remains in the engine for some time as it doesn't mix with methanol and gets blown out with heat and pressures. Lets hear you premis.

_____________________________

Buzz

(in reply to XJet)
       Post #: 156

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 12:00:48 AM   
Ed Cregger



Posts: 7734
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline
quote:

ORIGINAL: buzzingb

The only problem I see with this after-run oil is that it delays starts a few seconds and almost makes hand starts impossible at times because of the oil getting on the glowplug element. I find that I have spin the starter a few times till it gets blown off the plug before my engines will start.



-------------


From my philosophical point of view, making handstarts impossible is a good thing. Keep your hands away from that prop! <G>


Ed Cregger



_____________________________

Artisan

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

(in reply to buzzingb)
       Post #: 157

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 12:43:51 AM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		I normally use the electric starte but on my last time out flying I lost my starter rubber insert and had to hand start the 51. I opened the throttle 1/4 and primed it a few flips and then attached the glow driver and to my surprise on the first flip with a chicken stick it fired right up even with the afterrun oil. One thing to be careful with when useing an electric starter is to flip the prop over a few time with a chicken stick to ensure no hydrolock. That was why I decided a few years ago to investigate just how much afterrun oil is needed instead of just squirting or dripping and I found that about 25 drops is about right. My main concern is the extra pressure afterrun oil can generate by pooling and causing hydrolock or just providing a better seal between the piston ring and cylinder (oil on cylinder wall doesn't allow as much blowby,seals the gas in combustion chamber on compression stroke).

_____________________________

Buzz

(in reply to Ed Cregger)
       Post #: 158

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 1:22:28 AM   
Hobbsy



Posts: 10677
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		Actually the ARO will go straight down through the intake ports into the crankcase and lube the rear bearing. Very little will come out the exhaust because its higher.

_____________________________

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

(in reply to alan0899)
       Post #: 159

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 6:41:03 AM   
alan0899


 

Posts: 2022
Joined: 4/17/2006
From: Cundletown, NSW, AUSTRALIA
Status: offline 		G'day Mate,
OK whatever, but, you will still wear out the glowplug thread,

_____________________________

Good Flyin Mate. Keep Thyne Airspeed up, lest the ground arise & smite thee, Allan.

(in reply to Hobbsy)
       Post #: 160

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 12:35:16 PM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		I am not sure how to do it but I would not want to add it through an airfilter and flust dust into the engine. Maybe I can figure a way to mount the bruline filter with a spring clamp so that it can be removed and installed easily. Flushing dust into the engine throught the airfilter element withe afterrun oil isn't something that I want to do.

_____________________________

Buzz

(in reply to alan0899)
       Post #: 161

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 1:19:46 PM   
proptop



Posts: 4495
Joined: 10/18/2002
From: Rome, NY, USA
Status: offline 		Just had a thought...
Remember the old Enya mufflers? They had a port or opening directly opposite the exhaust stack, used for priming...
Maybe you could drill a small (let's say 1/8" ) hole in the muffler, so you could insert a piece of 1/8" brass tube attached to your ARO bottle so you could squirt the ARO thru the exh. port?
You would have to figure a way to plug the 1/8" opening though...or...perhaps make it your alternate pressure location? I think some older ST mufflers actually had such a thing, used for priming?

_____________________________

It's bad luck to be superstitious...
Revver Bro #77

(in reply to buzzingb)
       Post #: 162

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 5:12:04 PM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		Good idea PropTop, I will use a short piece of fuel tube and squirt it through the pressure tap that is alread on the muffler. This will allow the afterrun oil to run down the muffler into the engine and to the bottom of the crankcase and oil the bearings and won't flush the trapped dust particles in the airfilter into the engine. I will give it a try next time out.

_____________________________

Buzz

(in reply to proptop)
       Post #: 163

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 9:25:53 PM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		I wonder how many people out there are unaware that they are flushing dust into their engines like I have been doing? Just think about it, I was useing an airfilter to try and keep out dust and dirt and then I take it home and use afterrun oil to flush this dust right on into the engine. Man was I stupid. I will have to think things trough more form now on out.

_____________________________

Buzz

(in reply to buzzingb)
       Post #: 164

RE: *** CLUB SUPER TIGRE *** - 1/17/2007 11:16:39 PM   
buzzingb


 

Posts: 1511
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		I just came in from the shop where I was test fitting a 61ABC to a motor mount and I was testing the compression. It certainly has plenty of compression as I could hardly turn it over by hand. The mount was a great planes mount and man does it have some plastic making it up. By that I mean that there is a lot of plastic to contribute to weight. I may just put that thing back in the drawer and orde a Dave Brown. We'll just wait and see how the ole Four Star balances out. I didn't want to use that large of engine on the four star but I have it due to a trade I made with a Tiger Shark 91. I am banking on the 61 pulling more than the 91 but that remains to be seen.

_____________________________

Buzz

(in reply to buzzingb)
       Post #: 165