RE: DL-50 engine
 

I strongly agree wavy777! $60.00 for a Smart Fly optic kill switch is very cheap insurance in the long run.

RE: DL-50 engine
 

Well , Ifinally got my dl installed and flew it, it was awesome! PLane sat for about a week and half before I went out again, gas it er up, choke on till she popped, choke off, flip the prop a couple of times and she starts, easy as that. gave her full throttle and it died, I thought no big deal, probably still had a few air bubbels in the line. Well anyway I could not get it started again, so I packed up came home to diagnose the problem. No spark. So I checked all me swithces plugs everything looked good. I finally hooked the battery directly to ignition to by pass everything, still nothing. I can not get the plug to sspark when touching it to engine case or when I turn prop. I did call Bob at DLUSA, were I bought the engine, and ended up sending the ignition and hall sensor. any ways I was kind of wondering what you guys thought it might be or if any one else has had similar problems? Battery for ignition is 1650mh NMh at 4.8 volts. Yes I checked battery, fully charged.

RE: DL-50 engine
 

amen to that!

RE: DL-50 engine
 

Yah, except the "42% Products" switch is only $30 !!!!!!!!!!!
WHO would not want to invest that to be able to kill that sucker??????:eek::eek:

(An observer of an out of control gasser hitting a vehicle === once)

RE: DL-50 engine
 

Hey geppino, Thank you for the reply, you made it clear now. i think that hard starting but great performance is perferable to easy starting but poor running! although i hear some people prefer easy starting and a slightly rich motor. each man unto his own!

RE: DL-50 engine
 

Sounds like more than one guy cannot tune a engine!!!![:-] Capt,n

RE: DL-50 engine
 

Well, Cap'n..... Fill us in on YOUR starting and tuning procedure for the DL 50's that YOU own....

RE: DL-50 engine
 

meridianflyer - on the DL/ RC Excell ignitions, ** sometimes ** the pins in the red power connector are misaligned. Just enough so it doesn't feel "wrong" when you plug into it, but enough that one of the pins moves to the side, thus not making a connection. OR... the locking tab on individual pins/sockets comes disengaged, and the pin or socket backs out as you push the connectors together.

Not saying that is your situation, just relaying one that I have had happen before.

RE: DL-50 engine
 

Hi Bob, I do not own a DL 50...but probably will some day. Its the carburator your really tunning and maybe the timing. Most engines are all the same, as far as carb tuning. It takes some reading...but a good ear to notice rich or lean at different speeds helps to. I bet the "burp" is do more the different air flow in the rolling mode. I am no pro...but I do get my engines runing good. I have guys say...they would rather buy a used engine from me...in place of a new one. Thats tre way its been for years! Best regards Capt,n

RE: DL-50 engine
 

Thanks, that's helpful to know.

RE: DL-50 engine
 

A little change of topic for a moment please. What is up with the new upgraded RCExcel ignition module? What is the difference from the DL "blue" unit? Advantages and disadvantages? As far as I know the blue DL unit works just fine. Did they change the timing curve. Fill me in please. I suppose this topic may have been discussed in an earlier post but this forum is getting to big ( 103 pages) to try to find what may have already been discussed.

RE: DL-50 engine
 

BOB,

so do you think that the pins/sockets could become disiengaged from vibration? It is ust wierd that it was running really good, then all of sudden nothing. I sure am no expert. I guess well see. Will report back to you guys when or if I find something out from Bob with DLUSA.

RE: DL-50 engine
 

check out the smoke on my dl-50! straight into stock muffler with no preheating!

http://www.youtube.com/watch?v=TH8fOdU27dA

http://www.youtube.com/watch?v=lOubc1CEg6w

RE: DL-50 engine
 

Both the DL "blue" and RC Excell "red" units work identically on my DL's. IF there are differences, they aren't noticeable by me, at least. I have interchanged both versions with each other several times during my A123 testing. No differences.

Salerno - that is some pretty good smoke. Would you detail your setup? What pump? Injector? Location of injector?

RE: DL-50 engine
 

My Favourite part has to be that kid like grin on your head when you let that smoke rip:D :) sooo let me guess....have you used more smoke oil in the back yard "testing" and Grinning than you have flying with it :)

Looks great by the way!

Scott

RE: DL-50 engine
 

We also buy ignitions direct from them, and RCXcel have told us that the only difference is the colour of the label. Internals are identical.

Cheers

Scott

RE: DL-50 engine
 

Hi Bob,

I’m using the Sullivan Skywriter smoke pump with a Bison smoke injector on my DL50.

At first I drilled and taped the exhaust inlet flange of the muffler. I tried at two separate locations with differed angles, on the second hole I angled the hole toward the muffler, thinking it would spray the oil inside the muffler and I would not get the bog down effect. I plugged the two holes with hex bolts. (See photo) Neither hole worked. When I turned on the smoke, it really bogged the DL down, lost a lot of RPM, and when I backed off on the throttle, it wanted to quit. I did not fly with this set up, as I did not trust the motor to keep running.

Then a guy on this thread suggested Dura-Fix, the rod that can be used to weld aluminium with a propane torch. I ordered the Dura-Fix and used it to make a 3/16 thick pad on the end plate of the muffler, where it has a shallow ½ inch diameter indentation. Drilled and taped the hole for the smoke injector in the middle of the end plate. This set up works great and I have no concerns of the motor quitting when I turn on the smoke.

The Dura-Fix works as advertised; I think it’s the greatest thing since slice bread.

One word of caution, You may want to try it on a broken muffler or some other thin piece of aluminium first, as there is a learning curve on how to weld with it. If you use to much heat, the Dura-Fix metal will fuse/melt the surrounding aluminium and then the work piece becomes one big molten puddle and will make a large hole, when it cannot support it’s own weight. Although I had practiced with it before tying it on the muffler, I ended up melting a big hole in the end cap and then I had to weld/fuse a thick piece of aluminium to the end cap, with the Dura-Fix to cover the hole.

Once I got used to it, I also used it to repair the exhaust outlet stack on my DL muffler, as it cracked and fell off.

Here is photo of my end cap, as I mentioned I screwed this up, it may not look pretty, but it works.

Geppino

http://durafix.com/

RE: DL-50 engine
 

has any one tried the troy built model props and what do you think of them thanks

RE: DL-50 engine
 

Bob, You are undoubtedly the best distributor in the U.S.of A.. I would like to thank you personally for your prompt replies when asking for help and your fast service. You are what has made the DL engines so great aside from the fact that these are great engines. It is nice to buy a product with fantastic support AFTER the sale. You are Dah' Man! Speedy

RE: DL-50 engine
 

What is the carb model # if you want replacment parts for it?

RE: DL-50 engine
 

My smoke system is really pretty straigh forward. i am using a TME smart smoker pump. i have a small tank (12oz) whice gives me about 3 - 3.5 mins at full throttle. i find this is enough for me, as i only fly for about 12 min then come down even though ive always got heaps of fuel left after a flight. i use it for effects only as i find it to be more impressive that way! pump pumps oil straight to exhaust (standard) i taped a hole on the top of can in the center so exhaust coming out of motor blows straight pass oil at 90 degrees.
fitted nipple using a fiber washer and gasketmaker. it has not moved so far! the standard muffler gets plenty hot enough for good smoke! the tricky part for the system was programing radio for good smoke! my pump is activated by a switch, but is also programed to my throttle stick. smoke comes on when throttle stick is about 1/4 throttle, so when you go below this smoke pump stops. if switch is not on, no smoke! then came lots of testing with just fluid to set the amout of smoke! i can actually get heaps more/thicker smoke if i pump more oil but then i end up with oil all over the plane! so i have it set so i get maxium smoke at any throttle setting without any oil on plane! this still gives enough smoke as you can see on video, without the worry that oil will seep into hinges etc. and cause probs.
i found i really had to slow pump right down next to nothing as the tme pump is capable of moving sheet loads of oil! too much oil is not only a waste but also cools down exhaust temp so reduces smoke! I have only used super dri aviation smoke oil as everyone seems to think this gives the best smoke, but more importantly, my plane has a foam fuselage bottom and turtle deck( no stringers!) so i cant use petrol based products as it will melt straight through fuse! super dri is foam safe and completly clear! this is what they use in full sized aerobats! smoke is also very white and dense and does not stink!

Hey scott, i had my little brother in law over when i was testing the new engine and he asked me to make "clouds":D:D:D
Thats why i did the smoke in my back yard! although it is heaps of fun and any excuss will do:D;)
Made his day too! Shoulda herd him running around" the sky fell":D:D:D

Over all i am happy with my first smoke system's results and it has added so much depth to the flying expirience!
I suggest every one to take advantage of the fact that smoke works best with gassers and just do it!!!

RE: DL-50 engine
 

They load the motor plenty and dont pull much, reasonbly quiet though. If you were closer I would sell you mine cheap. Get mejzlik or vess for pull

RE: DL-50 engine
 

I've ran the TMB brand props most of the summer. I didnt know what I was missing till I bought a PT Carbon 22x8 prop from TBM. Personally I'd get a Menz 22x8 if I were going to go with wood. I noticed a big difference in vertical with a Menz as well as the PT. Just my honest opinion.

RE: DL-50 engine
 

I had a TBM 22x8 on my DL50. It sucked big time in performance and then the finish started falling off. After about three flights, I put a Xoar back on.

RE: DL-50 engine
 

Yep.
Except I put the NX or JXF back on.

TBM's are just too much freakin' load.
Now, maybe not if you used a 21", but who would do that??