DLE 111 tuning question.
#1
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DLE 111 tuning question.
I have a DLE 111 on a carden and it has about 1 1/2 gallons of gas thru it. Today, i noticed that it is starting to really turn some RPM's. I noticed that when I start it up, when it's cold, it won't take throttle until it warms up about 30 seconds or more. I have a DA 100 that does the same thing. The DA is a well run in engine.
My question, is this normal for these engines or am I a tick lean? If lean, is that top or bottom? On the DLE, is you let it idle a minute or two, it does develope a mid range "burble" that is usual for a slightly rich idle.
Thanks for any tips.
My question, is this normal for these engines or am I a tick lean? If lean, is that top or bottom? On the DLE, is you let it idle a minute or two, it does develope a mid range "burble" that is usual for a slightly rich idle.
Thanks for any tips.
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RE: DLE 111 tuning question.
Sounds like the low is about right. A Well tuned engine will behave a little lean until it warms up.
The burble may be coming from a rich high end. Many people (possibly most - especially those with low hours of experience on gassers) tend to have their engines tuned too rich.
What are your spark plugs telling you?
The burble may be coming from a rich high end. Many people (possibly most - especially those with low hours of experience on gassers) tend to have their engines tuned too rich.
What are your spark plugs telling you?
#5
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RE: DLE 111 tuning question.
Steve is correct, a well tuned DLE111 low needle will require a warm up before it will accept throttle, usually about 30 - 60 seconds. A slight bit of midrange burbal is normal especially with stock exhaust and a light loading prop. (able to turn 6500 RPM and up)
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RE: DLE 111 tuning question.
I have a problem with my DLE-111. I have about 7 gallons though it. Now it seems to gain RPM after flight. It is does have a bit of burbal at mid range RPM'S. It has always stayed running. Any ideas or help?
thanks Jmac
#9
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RE: DLE 111 tuning question.
Not sure what you mean by "gains rpm after flight". But what I'm guessing you're meaning is that once you've been flying around (hot engine) the engine doesn't want to come back down to a low idle for a few seconds? If that's the case it's simply caused by the LSN being set too lean. Richen it up 1/8th of a turn and it should come back to idle when hot properly during flight.
It may also be caused by an airleak somewhere in your engine, so double check that all bolts are good and tight, no gaskets are cracked and no slop in the front crank bearings. Even if it's a small airleak, richening the LSN will fix (or should I say "mask") the issue.
Egan
It may also be caused by an airleak somewhere in your engine, so double check that all bolts are good and tight, no gaskets are cracked and no slop in the front crank bearings. Even if it's a small airleak, richening the LSN will fix (or should I say "mask") the issue.
Egan
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RE: DLE 111 tuning question.
Yes Egan, It doesn't return to the same idle after it is warmed up. I haven't had to make any changes to the tuning so far. I guess this normal after a few gallons of fuel?
Jmac
#12
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RE: DLE 111 tuning question.
As an engine breaks in it will change tune, it will need to be retuned probably 3 or 4 times during the whole break in process. Be sure to get the engine good and warmed up before you start any tuning process. Do not start by just tweaking a needle and seeing what it does. For the best results, perform a complete tuning process from start to finish, otherwise all you're doing is guessing.
If you started out flying it with the factory recommended settings, rest assured it's grossly out of optimal tune.
If you started out flying it with the factory recommended settings, rest assured it's grossly out of optimal tune.
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RE: DLE 111 tuning question.
ORIGINAL: Jeremymac
Yes Egan, It doesn't return to the same idle after it is warmed up. I haven't had to make any changes to the tuning so far. I guess this normal after a few gallons of fuel?
Yes Egan, It doesn't return to the same idle after it is warmed up. I haven't had to make any changes to the tuning so far. I guess this normal after a few gallons of fuel?
Jmac
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RE: DLE 111 tuning question.
Just had a great day at the field, and put a gallon and a half of fuel through the DLE-111 with the Tillotson carb. It totally fixed the problem with the idle. I tached the engine at 1200 rpm before and after the flight and didn't touch the throttle trim all day. The engine ran great, starts much easier, no dead sticks, and has excellent power - 6900 rpm with a Biela 27x10 using stock mufflers with one inch cut off the down tubes. The strange thing is that the engine now sounds like my 3W-106.
If you don't have a spare Tillotson carb, you might try modifying the EMAS carb. Get a carb rebuild kit for a Tillotson HS carb - all the parts fit the EMAS. Remove the welch plug and clean the idle reservoir with brake cleaner. Mix up some epoxy, and fill in the idle discharge port that is closest to the venturi nozzle. Hopefully the gasoline won't eat the epoxy. Install a new welch plug from the rebuild kit and give it a try. You can always drill out the epoxy if you have to.
If you don't have a spare Tillotson carb, you might try modifying the EMAS carb. Get a carb rebuild kit for a Tillotson HS carb - all the parts fit the EMAS. Remove the welch plug and clean the idle reservoir with brake cleaner. Mix up some epoxy, and fill in the idle discharge port that is closest to the venturi nozzle. Hopefully the gasoline won't eat the epoxy. Install a new welch plug from the rebuild kit and give it a try. You can always drill out the epoxy if you have to.
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RE: DLE 111 tuning question.
ORIGINAL: w8ye
You are lean on the low speed for sure
if it sags in flight, you are lean on the high speed too.
You are lean on the low speed for sure
if it sags in flight, you are lean on the high speed too.
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RE: DLE 111 tuning question.
ORIGINAL: Jeremymac
Yes Egan, It doesn't return to the same idle after it is warmed up. I haven't had to make any changes to the tuning so far. I guess this normal after a few gallons of fuel?
Yes Egan, It doesn't return to the same idle after it is warmed up. I haven't had to make any changes to the tuning so far. I guess this normal after a few gallons of fuel?
Jmac
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RE: DLE 111 tuning question.
I have the exact same problem with my DLE-111 with about 7 gallons of fuel through it. The idle climbs a lot after a few minutes of flying and it makes spin entries and landings a real pain.
#18
Have two DLE 111s. One is a spare with probably about 10 hrs time on it. Last month the installed one backfired. It blew the inlet out of the canister muffler and blew out the reeds. Replace reeds and soldiered canister muffle back together. Seemed to work fine. Then this week one cylinder was dropping off on idle but would recover after throttling up. Flew it. Ended up coming in deadstick cause all the prop bolts sheered off. They were tight before the flight. The only thing holding the prop on was the spinner.
Replaced the spinner, prop and prop bolts. Started it up and the one cylinder keeps dropping off like it is not firing. Replace CDI with spare = no change. Replace both plugs several times = no change. Swapped carbs = No change. Rebuilt carbs = no change. Got a fresh batch of fuel = no change. I am beginning to wonder if a canister(s) is bad even though I can blow thru both the just fine. (reason for first back fire was an intermittent battery, I thought!
I checked the reeds on both and they are still good. Should be they were both new. No mater which part I swap out, both engines run the same dropping that one cylinder. I am beginning to think I have two bad CDIs or two bad carbs. But, I have cleaned the carbs several times.
Tomorrow I am going to install the stock mufflers and take the cans out of consideration. I have a lot of experience with gassers. But this one has got me pulling out my hair. If the cans are not it, then I am thinking it has to be two bad CDIs.
I have a RCAcell CDI tester which I picked up at Weak Signals this past year. It says on the package that there are complete instructions on the inside. Ya Right! Got to look around on the net for some instructions, I guess.
What a PITA. One step from ordering a couple DAs and be done with this mess and start over with a couple DA messes. Lost total confidence in these two buggers.
Replaced the spinner, prop and prop bolts. Started it up and the one cylinder keeps dropping off like it is not firing. Replace CDI with spare = no change. Replace both plugs several times = no change. Swapped carbs = No change. Rebuilt carbs = no change. Got a fresh batch of fuel = no change. I am beginning to wonder if a canister(s) is bad even though I can blow thru both the just fine. (reason for first back fire was an intermittent battery, I thought!
I checked the reeds on both and they are still good. Should be they were both new. No mater which part I swap out, both engines run the same dropping that one cylinder. I am beginning to think I have two bad CDIs or two bad carbs. But, I have cleaned the carbs several times.
Tomorrow I am going to install the stock mufflers and take the cans out of consideration. I have a lot of experience with gassers. But this one has got me pulling out my hair. If the cans are not it, then I am thinking it has to be two bad CDIs.
I have a RCAcell CDI tester which I picked up at Weak Signals this past year. It says on the package that there are complete instructions on the inside. Ya Right! Got to look around on the net for some instructions, I guess.
What a PITA. One step from ordering a couple DAs and be done with this mess and start over with a couple DA messes. Lost total confidence in these two buggers.
Last edited by Len Todd; 06-27-2016 at 07:00 PM.