DL-50 engine
03-20-2009 | 11:07 PM
#4128
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From: Red Wing,
MN
RE: DL-50 engine
Most of the time you don't need any modification on the diaphragm on the carb. Unless you don't like following the 3 to 1 rule. 1 in, 3 out, on the cowl cut. Form over function. If it ain't running because of the diaphragm your exit hole probably isn't big enough.
03-20-2009 | 11:11 PM
#4129
RE: DL-50 engine
Well Got the oil and then the GAS and my friend who his helping me build the plane. Okay all ready to go and we fill the tank and prime it and try to start her nothing. Darn the plug wire fell off one flip BANG she started right up and purrred like a kitten. Man I love this engine. So we shut her down and let it cool a bit and then just one flip and bang she starts great so far. I am going to run two tanks threw her and and then she is going in the air. And I am going to just keep her at 32 to 1. The POWER IS SO FREAKEN GOOD I can't wait to rip her down the runway. Thanks to every body on here who has helped me and I am sure I will need more. And I would like to thank my friend Bill who has help me the most by building most of the plane for me.
03-22-2009 | 10:13 PM
#4131
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From: Powhatan,
VA
RE: DL-50 engine
Hi Folks, new to this forum, ran my new DL50 the first time today. I am not sure what is happening, but I had to open low speed needle (factory setting was 1-1/2) to get the idle down to 2500 rpms. The butterfly is all the way closed, or at least it appears to be (pushing on the throttle arm) all the way closed. The LS needle is now open to about 2 turns. The engine gets down to 2500 but is very rough running. I have been searching this thread and have given up. BTW, the beast started the first time in about 8 flips of the prop. Wonderfulllllllllll. Thanks in advance to all. Bpar
03-22-2009 | 10:44 PM
#4132
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RE: DL-50 engine
It sounds like it may not be closing all the way. Check and see if the idle screw (the big one by the two mixture screws) is not holding it open a hair or even remove it completely. Also make sure you have full travel on your servo. If that does not solve it you may have some gunk in the jets or something.
03-22-2009 | 11:24 PM
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From: Dahlgren,
IL
RE: DL-50 engine
ORIGINAL: Bpar4
Hi Folks, new to this forum, ran my new DL50 the first time today. I am not sure what is happening, but I had to open low speed needle (factory setting was 1-1/2) to get the idle down to 2500 rpms. The butterfly is all the way closed, or at least it appears to be (pushing on the throttle arm) all the way closed. The LS needle is now open to about 2 turns. The engine gets down to 2500 but is very rough running. I have been searching this thread and have given up. BTW, the beast started the first time in about 8 flips of the prop. Wonderfulllllllllll. Thanks in advance to all. Bpar
Hi Folks, new to this forum, ran my new DL50 the first time today. I am not sure what is happening, but I had to open low speed needle (factory setting was 1-1/2) to get the idle down to 2500 rpms. The butterfly is all the way closed, or at least it appears to be (pushing on the throttle arm) all the way closed. The LS needle is now open to about 2 turns. The engine gets down to 2500 but is very rough running. I have been searching this thread and have given up. BTW, the beast started the first time in about 8 flips of the prop. Wonderfulllllllllll. Thanks in advance to all. Bpar
I fired up a brand new DL 50 yesterday, and had to do the exact same thing. Started up at 1 1/2 turns out for 3500 rpm, 2 turns out on the low end gave me approx 1800 rpm. I verified and bonified that the butterfly is closing all the way also...mine is running purty dog gone smooth for a new one breaking in. I found that it was just to lean on the low end setting by the rpms climbing after throttle back.
03-23-2009 | 12:23 AM
#4134
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From: MIDLAND, TX
RE: DL-50 engine
When I got my new DL-50 it also ran at 2500 on Idle and what they do at the factory is set the Idle stop screw. I removed the screw and sure enough the engine idled way down. Now I wonder if this is true on all the engines out of the box. I think so but its just my 2 cents worth.
03-23-2009 | 12:35 AM
#4135
RE: DL-50 engine
ORIGINAL: FOOPED
When I got my new DL-50 it also ran at 2500 on Idle and what they do at the factory is set the Idle stop screw. I removed the screw and sure enough the engine idled way down. Now I wonder if this is true on all the engines out of the box. I think so but its just my 2 cents worth.
When I got my new DL-50 it also ran at 2500 on Idle and what they do at the factory is set the Idle stop screw. I removed the screw and sure enough the engine idled way down. Now I wonder if this is true on all the engines out of the box. I think so but its just my 2 cents worth.
03-23-2009 | 05:23 AM
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From: Powhatan,
VA
RE: DL-50 engine
Gosh that was quick!! There is no idle screw. It just went against anything that I have experienced and was worried that a 1/2 turn move was too much. Have the day off and plan to hit the field sometime this AM, Your comments have eased my concerns. I have a Bling and will do the maiden flight. Will keep all posted. Thanks to all. Bpar
03-23-2009 | 07:38 AM
#4138
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From: Mosinee,
WI
RE: DL-50 engine
There is no idle screw.
I fired mine up on a test stand with the throttle linkage set up in such a way that I could set the idle position and also be able to throttle it up to full. With the butterfly opened very slightly from full closed and the needles at the factory setting (both roughly 1 1/2 turns) it idled at about 2300. I set it to 2500 and let it run. It could idle it down to 1800 or so but it would run pretty rough and then quit in 30 seconds or so. Would idle indefinitely very smoothly above 2100 as set.
Mike
03-23-2009 | 08:00 AM
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From: ISTANBUL, TURKEY
RE: DL-50 engine
I fired up a new DL50 yesterday with a 22x8 mejzlik prop - on the first tank of fuel, after 30 minutes, (after about 400cc of fuel) I could hold a nice steady idle of 1400rpm for 3-4 minutes.. at the end of first 700cc of fuel, top end was 7250rpm. lean out those low needles!
03-23-2009 | 08:26 AM
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From: Takasaki, JAPAN
RE: DL-50 engine
Just finished running mine on the mineral break-in oil. 8 liters seems to have taken ages. Put a couple of flights in on sythetic oil and the revs and power seem to have picked up a bit. Changed from a 22x8 Hawk prop to a 23x8 ZOAR on the last flight. This engine ,prop are a great match for my Bling. Hovering a 50cc gasser a couple of feet of the deck is how I'm gettin my kicks at the moment!
I know I should tweek her after making the switch to synthetic, but she is running so sweet I don't want to touch the needles.
Have you seen the new engine on the HobbyCity site? They are calling it the "DL Killer" Looks nice, especially the price!
http://www.hobbycity.com/hobbycity/s...idProduct=8859
DL cylinder on a machined case? I can never seem to get pictures posted on RCU, I never have problems with the other forums , maybe it's a mac thing?
I know I should tweek her after making the switch to synthetic, but she is running so sweet I don't want to touch the needles.
Have you seen the new engine on the HobbyCity site? They are calling it the "DL Killer" Looks nice, especially the price!
http://www.hobbycity.com/hobbycity/s...idProduct=8859
DL cylinder on a machined case? I can never seem to get pictures posted on RCU, I never have problems with the other forums , maybe it's a mac thing?
03-23-2009 | 09:46 AM
#4141
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From: Miami beach, FL
RE: DL-50 engine
Thanks for the link. Looks like an interesting motor. Wonder at what rpm the 5.5HP is rated. 10,000? 
Also doesn't seem to have a v type reed. Maybe DL knew someone was copying their engine and therefore they added the extra 5cc per cylinder?!
For image upload, the file name must have at least 5 characters or it'll throw the error "Missing Required Fields!".
Also doesn't seem to have a v type reed. Maybe DL knew someone was copying their engine and therefore they added the extra 5cc per cylinder?!For image upload, the file name must have at least 5 characters or it'll throw the error "Missing Required Fields!".
03-23-2009 | 10:48 AM
#4143
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From: St. Louis,
MO
RE: DL-50 engine
ORIGINAL: Spadkun
Just finished running mine on the mineral break-in oil. 8 liters seems to have taken ages. Put a couple of flights in on sythetic oil and the revs and power seem to have picked up a bit. Changed from a 22x8 Hawk prop to a 23x8 ZOAR on the last flight. This engine ,prop are a great match for my Bling. Hovering a 50cc gasser a couple of feet of the deck is how I'm gettin my kicks at the moment!
I know I should tweek her after making the switch to synthetic, but she is running so sweet I don't want to touch the needles.
Have you seen the new engine on the HobbyCity site? They are calling it the "DL Killer" Looks nice, especially the price!
http://www.hobbycity.com/hobbycity/s...idProduct=8859
DL cylinder on a machined case? I can never seem to get pictures posted on RCU, I never have problems with the other forums , maybe it's a mac thing?
Just finished running mine on the mineral break-in oil. 8 liters seems to have taken ages. Put a couple of flights in on sythetic oil and the revs and power seem to have picked up a bit. Changed from a 22x8 Hawk prop to a 23x8 ZOAR on the last flight. This engine ,prop are a great match for my Bling. Hovering a 50cc gasser a couple of feet of the deck is how I'm gettin my kicks at the moment!
I know I should tweek her after making the switch to synthetic, but she is running so sweet I don't want to touch the needles.
Have you seen the new engine on the HobbyCity site? They are calling it the "DL Killer" Looks nice, especially the price!
http://www.hobbycity.com/hobbycity/s...idProduct=8859
DL cylinder on a machined case? I can never seem to get pictures posted on RCU, I never have problems with the other forums , maybe it's a mac thing?
03-23-2009 | 10:59 AM
#4144
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From: Takasaki, JAPAN
RE: DL-50 engine
Yeh! It worked!
Back to the DL50. I have also been playing with the throttle curve on my transmitter. You may notice with gas engines you don't seem to get much increase in rpm or power over half stick. It can even feel like the power is on or off. Gas engines will be at 3/4 power when the butterfly is only half way open.
By adjusting the throttle curve you can get a much better linear, finer response for the throttle, especially in the lower part of the rev range. This really helps on landings and when you have a plane that hovers at half stick.
Back to the DL50. I have also been playing with the throttle curve on my transmitter. You may notice with gas engines you don't seem to get much increase in rpm or power over half stick. It can even feel like the power is on or off. Gas engines will be at 3/4 power when the butterfly is only half way open.
By adjusting the throttle curve you can get a much better linear, finer response for the throttle, especially in the lower part of the rev range. This really helps on landings and when you have a plane that hovers at half stick.
03-23-2009 | 10:29 PM
#4145
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From: Powhatan,
VA
RE: DL-50 engine
Finally got to the field around 4. After a couple of short runs on the stand to make sure all is well, got the Bling into the air. Ground data is: idle - 2400 and 7400 peak (at the end of my 2 flights). This thing is easy to start and pulls very hard. Starts on the first flip even when barely warm. This is great!!!! Will post pics soon.
Still having trouble getting the idle below 2400. The low needle is out over 3 turns. And it will go lower to 1800 but is rough and rich. I wonder if moving the timing a bit would help? Maybe a bit more run time will help. I don't think so because this is a fine running beast above an idle.
Still having trouble getting the idle below 2400. The low needle is out over 3 turns. And it will go lower to 1800 but is rough and rich. I wonder if moving the timing a bit would help? Maybe a bit more run time will help. I don't think so because this is a fine running beast above an idle.
03-23-2009 | 10:42 PM
#4146
RE: DL-50 engine
ORIGINAL: Bpar4
Finally got to the field around 4. After a couple of short runs on the stand to make sure all is well, got the Bling into the air. Ground data is: idle - 2400 and 7400 peak (at the end of my 2 flights). This thing is easy to start and pulls very hard. Starts on the first flip even when barely warm. This is great!!!! Will post pics soon.
Still having trouble getting the idle below 2400. The low needle is out over 3 turns. And it will go lower to 1800 but is rough and rich. I wonder if moving the timing a bit would help? Maybe a bit more run time will help. I don't think so because this is a fine running beast above an idle.
Finally got to the field around 4. After a couple of short runs on the stand to make sure all is well, got the Bling into the air. Ground data is: idle - 2400 and 7400 peak (at the end of my 2 flights). This thing is easy to start and pulls very hard. Starts on the first flip even when barely warm. This is great!!!! Will post pics soon.
Still having trouble getting the idle below 2400. The low needle is out over 3 turns. And it will go lower to 1800 but is rough and rich. I wonder if moving the timing a bit would help? Maybe a bit more run time will help. I don't think so because this is a fine running beast above an idle.
03-23-2009 | 10:51 PM
#4147
RE: DL-50 engine
That is what I was going to ask. What is the best way to shut them down? Optic cut off switch, Or just the throttle kill button on the radio? I have one on my DX6i and it just close's the throttle the rest of the way and she shuts down. Now that is on a nitro motor. Is it the same on the DL?
03-23-2009 | 11:20 PM
#4149
RE: DL-50 engine
ORIGINAL: giddyuperic
That is what I was going to ask. What is the best way to shut them down? Optic cut off switch, Or just the throttle kill button on the radio? I have one on my DX6i and it just close's the throttle the rest of the way and she shuts down. Now that is on a nitro motor. Is it the same on the DL?
That is what I was going to ask. What is the best way to shut them down? Optic cut off switch, Or just the throttle kill button on the radio? I have one on my DX6i and it just close's the throttle the rest of the way and she shuts down. Now that is on a nitro motor. Is it the same on the DL?
