Just got back from my first running of my DL-50. Man was that thing hard to start! Can you believe it? I had to flip that thing maybe 15 times before it was running!


Seriously though, 10 or 12 flips, choke on, ignition on, and I thought I heard a pop. Opened the choke and a couple more flips and it was purring like a kitten!

I did decide to skip the Lawn Sludge and use my Pennzoil Air Cooled, although I haven't yet decided if I'm going to continue to use the Pennzoil after break-in. I'll probably run another couple of tanks through it and then wait until my plane is completed and I can do the rest of the break-in in the air. So far it seems to run very well. It starts very easy and idles pretty well so I feel confident that it will run reliably in my Spacewalker during the rest of the break-in. Plus given the airplane it'll be in. it's won't need to be operated at a high power so I don't have to worry about over doing it during the break-in period.

All in all I'm pretty happy with it. Now I just can't wait to get my plane done so I can fly it!



Mike

No way! Are you serious where did you hear this top secret information?

lol

871

You can break in on synthetic and not compromise your engine, but I would never run any oil @ 100:1. I usually run Pennzoil air cooled at 32:1 for the life of the engine, or a synthetic at around 50;1.
If you don't push it hard on break-in, it doesn't really matter what prop you use. If you look at your rings you will find that they seat (break-in) much faster than people realize. That is if you have a decent and concentric cylinder, and believe me, I have seen some foreign cylinders that are less than perfect.
Ran Amsoil for a while, deposits were as hard as rock compared to many other oils, that is why I switched some time ago.

You are not on a stock muffler, that is for sure.

Talk to a few very knowledgeable engine builders and you won't be so cynical

Does your guys' motor have a tiny bit of play when rocking the prop back and forth (on the plane of rotation) ? Mine does, not sure if this is normal. Haven't ran it yet.
Can someone who has the timing set as recommended please measure (in Millimeters ) the distance between the middle of the magnet and the middle of the sensor when at TDC ?
Thanks

About 1/32 to 1/16 play at the tip of the prop is normal.

You can leave the timing at its default.

Okay now you guys have made my head hurt. The manual what are you talking about the thing that is four pages and is more of a picture book then anything else. I have gotting all of my info from here witch is great. But it is like anything you get many diffrent people with all kind of ways they like to do things. I have a head injury and have a very hard time thinking clearly. I am going to bolt it on and run two tanks of the pennzoil out door stuff at, There is some photos of it on DLusa. That will be at 35 to 1 and then fly her easy at 40 to 1 on amsoil or bell ray, maybe two more tanks and that should be good to go. If this sound right then please let me know. I am just a little worried because all of this is alot of money to me. Thank you for all of your help. Eric

Run at least a tank at 2500rpm on the ground (takes about an hour). I did two but one is fine.
Tune and go fly w/ ease until the engine ran for a total of about 4 hours.

2 gallons w/ mineral oil (Lawnboy Ashless) 32:1 w/ a 22x8 prop.
1 gallon w/ mineral oil 32:1 and the final prop of your choice.

Then synthetic. Start Amsoil Saber at about 60:1, after a gallon or so 80:1 is fine. All the other synthetic oils need to be in the 40:1 - 50:1 range. Check the manufacturer's recommendations.

I'm sure some don't agree w/ me but this procedure for sure guarantees a smooth run and longlivity of your engine.

Don't run 60 to 1 or 80 to 1 and dont run any amsoil product. Unless you like carbon in your engine. Here is a good web page for oil info.


http://www.geistware.com/rcmodeling/...test/index.htm

Just to clarify, this needs to be the Pennzoil Outdoor Air Cooled not the Outdoor Multi Purpose.

The more I research two stroke oil the more I realize it's a very hotly debated subject. At this point I think a person is better off just picking an oil, making sure it's got the API-TC rating, keeping the oil ratio low if it happens to be a synthetic with lofty claims of very high ratios and then just do your best to keep an eye on your engine.


I've never run Amsoil in anything but I tend to agree. I've heard too many bad things about it to even want to try it. It may be a good oil, the problems people report may be user induced, I don't know. But there are many other oils out there that don't seem to have the love/hate line be right in the middle. I Personally know a guy who ran Amsoil in his car and he said within a couple thousand miles it turned to total sludge. Not long after flushing it out and using a different oil he needed a new cam. Was it a fluke, who knows.

Personally I plan to run Pennzoil Air Cooled after break-in until I have a reason to change. My .02



Mike

As I said my head hurts from reading all of these things about oil. So I am going with the ashless for break in and then pennzoil air cooled oil. One more then can I use the pennz for both and just change the mixture? Thank you

I use Penn, I have a case of 8oz bottles.

If you just want to run pennzoil. Run 32 to 1 for 3 to 4 gallons. Then run 40 to 1 after. I broke in on 32 to 1 lawn boy ash-less. Now I run 50 to 1 Bell-Ray MC-1.

That's what I'm doing. I mixed at 32:1 and will switch to 40:1 after I have a few gallons through it.




Mike

HAY GUYS HAVE A LOOK AT YOUR LOCAL TARGET STORE IF YOU HAVE ONE IN THE AERA THEY ARE STARTING TO CARRY PENN.
AIR COOLED OIL I FOUND AS MUCH AS I WANT. ALL OTHER PLACES I HAVE LOOKED NOBODY SEEMS TO CARRY IT


JIM

Don't fret so hard about it. Just run the pennzoil at 32 to 1 for break in, then change to a 40 to 1 ratio. You can run the Pennzoil for the life of your engine. Heck, you can run it at 32 to 1 for the life of your engine if you want to, won't hurt a thing. Oil is the life blood of any engine, just don't skimp on your ratio and you'll be fine.

Flatspin is right. DON'T SKIMP ON THE OIL!!

Cool then that is what I will do. I thank you all for your help. And I am sure I will be asking more.

Hey guys!!!

I have a strange issue with my DL50. When I perform a wall the engine sounds like it wants to stall. Fortunately it never did, but my legs shake every time i wall my Yak. Performing a wall i speed up the plane horizontally, then cut the throttle and after 2 seconds or so i pull the elevator . And in the moment of rapid stall of the model engine wants to quit. My previous DL50 didnt behave like this.

Any ideas? Carb is well adjusted, i have also installed a nipple to the mambrain cover and connected to a long fuel line into the fuse.

I don't have answer for that. I would like to know what is a good size tank for the DL-50? I have a 16 oz that came with the plane will this be okay? What are some of the flight times you guys are getting with your DL's

Max 15oz per 14 minutes 3D flight w/ a DL50 on a tuned pipe.

I have 16oz and I have never had less than 1/4 tank after 15 minutes.

Pawel, the sound you hear is the g-forces acting on the diaphram inside the carb-the engine kind of pauses for a milisecond and then resumes as normal, mine did this too. I found with a little more time and a slight adjustment of the low needle, this has dissapeared. Mine would do it if I would be on a 45* downline and then pop into a wall very rapidly as you mentioned.

On the oil for breakin, I use only Pennzoil aircooled @32:1 and I will stay at 32:1 for the rest of my engines life. I have two Zenoahs that I run too and they use the 32:1 as well so I only have to tote one fuel jug to the field. My nephew switched from Pennz 50:1 back to 32:1 on a converted Homelite 33cc and picked up a noticeable power increase.

I, too, noticed a power increase with Pennzoil 32:1, this with a DA broken in on Pennzoil and then run with Amsoil Dominator 50:1, then purely by chance (grabbed the wrong fuel container) run with the Pennzoil again. Definite increase in power, and I would be skeptical if I hadn't experienced this myself.

More oil = More power (and protection)