DL-50 engine
12-07-2009, 04:09 PM
#5927
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RE: DL-50 engine
Hi
I'm new to gas powered planes. Just got the 35cc 260 from Areoworks. I'm about to order a DLE55, probably from ValleyView RC. I've been reading quite a lot on this forum and I've got a question. I've seen the term "burble, gurgle, and gerbil (well not gerbil) and I'm not sure what these terms mean in regards to the engine. Is burbling and gurgling interchangeable words to describe a sort of hesitation in the engine as it revs up? I'm guessing that is what it means. If not, what sound do I listen for to identify burbling or gurgling and how is this problem fixed.
Thanks in advance.
Mike
I'm new to gas powered planes. Just got the 35cc 260 from Areoworks. I'm about to order a DLE55, probably from ValleyView RC. I've been reading quite a lot on this forum and I've got a question. I've seen the term "burble, gurgle, and gerbil (well not gerbil) and I'm not sure what these terms mean in regards to the engine. Is burbling and gurgling interchangeable words to describe a sort of hesitation in the engine as it revs up? I'm guessing that is what it means. If not, what sound do I listen for to identify burbling or gurgling and how is this problem fixed.
Thanks in advance.
Mike
12-07-2009, 04:32 PM
#5928
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RE: DL-50 engine
Wow 55 on that plane
...it will be sick!!!! lol, the DLE55 on my Extra 300 50cc has amazing vertical from hover i can imagine a 35cc with this power.
...it will be sick!!!! lol, the DLE55 on my Extra 300 50cc has amazing vertical from hover i can imagine a 35cc with this power.
12-07-2009, 04:46 PM
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RE: DL-50 engine
i can allmost guarantee someone else will add to my response,,,usually the burbling will occur where the engine transitions from idle to midrange,,,usually if the idle or high speed needle is too rich this will occur,,as far as using a 50 cc in a 35 cc plane ,,not just me ,,,but the manufacturer probably will discourage this,,you may have ground /prop clearance issues,and you could rip the plane in half from over powering,,,read the articles on gassers including this whole thread ,for info,,if youve ever had a weed whacker or gas string trimmer and noticed a lag in engine accelleration at around mid throttle,,thats simmilar to the burbling youve heard of ,usually leaning the needles slightly makes that go away,,also if you have friends that have gassers,,get with them ,,it makes it much easier ,in person,,,ps ,,,once again read this thread starting at page one,,,youll be surprised what youll learn.ps alot of our flying is done at mid throttle,so its important to have this adjusted ,,thats even if it occurs,,
12-07-2009, 10:48 PM
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RE: DL-50 engine
I was looking at this combo also (Aeroworks 35cc with DLE 55). There was a review in a mag and the tester was running a DA 50 so I knew it could be done...
12-07-2009, 10:54 PM
#5934
RE: DL-50 engine
To make it fit you need to get shorter standoffs and put the carb through the firewall or remove the firewall and move it back and reattach it. Either way works good. By mounting the throttle servo as far back as you can it will avoid adding any weight to balance it with the DLE.
12-07-2009, 11:11 PM
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RE: DL-50 engine
well ,ill be the first to admit,,after around the time you get used to a new plane
,im allways looking for more power,,and any one should know nothing replaces displacement and where i live above 3k asl.if a 50 cc is recommended a 60 ,,would do better,,,one great advantage ,theese days,,is lighter components and stronger servos and batteries,,allowing us to fly bigger planes with smaller motors,ive got a current 30 pct.yak that weighs 7 pounds less than the same size vintage 1989 ,,model,,of the same scale,,so in retrospect,,its all good.
,im allways looking for more power,,and any one should know nothing replaces displacement and where i live above 3k asl.if a 50 cc is recommended a 60 ,,would do better,,,one great advantage ,theese days,,is lighter components and stronger servos and batteries,,allowing us to fly bigger planes with smaller motors,ive got a current 30 pct.yak that weighs 7 pounds less than the same size vintage 1989 ,,model,,of the same scale,,so in retrospect,,its all good.
12-08-2009, 12:57 AM
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RE: DL-50 engine
Thanks for the response to my question. There is a member at my club that has a DA50 in the Aeroworks 35cc Extra 300 which is the same size and weight as the 260. Other than for takeoff, he doesn't go to full throttle very often. He does not fly 3D maneuvers, just routine aerobatics. It is an impressive plane with that engine. Aeroworks says the 35cc 260 or 300 uses a 35cc to 45cc engine so the DLE55 isn't too far above that. I don't think it will be too much for the plane to handle. I don't want to spend the money that a DA commands. From what I've read I'll be very happy with the performance of the DLE55 at much less cost. By the way, Aeroworks has the 260 on sale for $150.00 less than regular price. I think it's a very good buy.
Mike
Mike
12-18-2009, 03:15 AM
#5939
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RE: DL-50 engine
Well I have read all 238 pages of this thread along with several other threads pertaining to the DLE55. I will be ordering that engine from ValleyView RC within the next week or so.
I was going to use Pennzoil Aircooled at 32 to 1 for the break in but recall some folks saying that oil doesn't carry away contaminants or other tiny particles out of the engine very well. I think I will go with Stihl Ultra as that seems to be what Jody prefers. I plan to use the Stihl at 32 to 1 initially and then go to 50 to 1 after a couple of gallons has been run through the engine.
Here is what I'm not too sure of. On the very first startup of the engine, do you set both high and low needles after the engine has run for 2 or 3 minutes or do you just let the engine run at about 2500 RPM for maybe 6 or 7 minutes and then shut if off to totally cool down before starting again. It seems to me that if the high needle is to be set (peak RPM then back off a 100 or so) I will have to have the engine at full throttle for about 15 seconds in order to make that adjustment. I'm worried about running the throttle at full bore when the engine is that new. Is it okay to do that or should the engine be run several times (at low RPM) with total cool down between each run before taking it up to full throttle.
I plan to fly the engine after the first or second tankfull (16 to 20oz tank) for the rest of the break in period. I'll just fly around with lots of varying throttle settings for the first gallon or two of gas.
Please correct me if I'm about to do something wrong.
I was going to use Pennzoil Aircooled at 32 to 1 for the break in but recall some folks saying that oil doesn't carry away contaminants or other tiny particles out of the engine very well. I think I will go with Stihl Ultra as that seems to be what Jody prefers. I plan to use the Stihl at 32 to 1 initially and then go to 50 to 1 after a couple of gallons has been run through the engine.
Here is what I'm not too sure of. On the very first startup of the engine, do you set both high and low needles after the engine has run for 2 or 3 minutes or do you just let the engine run at about 2500 RPM for maybe 6 or 7 minutes and then shut if off to totally cool down before starting again. It seems to me that if the high needle is to be set (peak RPM then back off a 100 or so) I will have to have the engine at full throttle for about 15 seconds in order to make that adjustment. I'm worried about running the throttle at full bore when the engine is that new. Is it okay to do that or should the engine be run several times (at low RPM) with total cool down between each run before taking it up to full throttle.
I plan to fly the engine after the first or second tankfull (16 to 20oz tank) for the rest of the break in period. I'll just fly around with lots of varying throttle settings for the first gallon or two of gas.
Please correct me if I'm about to do something wrong.
