DL-50 engine
04-10-2009 | 02:27 AM
#4501
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From: Christchurch, NEW ZEALAND
RE: DL-50 engine
this might sound like a silly question, but can these gas engines mount in the horisontal position? Some of the other brands have a carb mounted on the left side. The DL-50 doesn't, so with a custom exaust does it run ok? Is the cowl the deciding factor?
My experience is all glow and electric so far, the cost of buying and running a gas powered plane is looking realistic and could be the next step
Cheers
My experience is all glow and electric so far, the cost of buying and running a gas powered plane is looking realistic and could be the next step
Cheers
04-10-2009 | 03:31 AM
#4502
RE: DL-50 engine
They run good inverted, upright, knife edge doesn't matter. Some engines will need different starting procedures due to gravity affecting raw fuel that is trying to be sucked uphill while being choked, but not a big problem. The DL is rear carbed engine so it will be happy in any attitude.
04-10-2009 | 05:20 AM
#4503
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From: Christchurch, NEW ZEALAND
RE: DL-50 engine
Thanks Jody, I like the idea of hiding the engine in the cowl, pics of most extras and edges etc have the engine exposed through the bottom of the cowl. i will have to keep my eye out for a pitts style muffler from the horizontal.
04-10-2009 | 05:39 AM
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From: Winston Salem,
NC
RE: DL-50 engine
Most engine are installed inverted with the head exposed on the bottom for cooling I would be concerned with that especially during the summer time and Im not sure if that would cause a problem with the ballance of the plane you may want to check into that, I feel that the head and muffler all on one side of the plane could be a problem with balancing but Im no expert at this type of installation. Good Luck
04-10-2009 | 07:01 AM
#4505
RE: DL-50 engine
ORIGINAL: giddyuperic
Sorry guys a little off topic. Has any onew bought the new DLE 55 and have they seen a big diffrence in the 50 VS the 55?
Sorry guys a little off topic. Has any onew bought the new DLE 55 and have they seen a big diffrence in the 50 VS the 55?
04-10-2009 | 08:31 AM
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From: Kalona,
IA
RE: DL-50 engine
Properly baffled, a completely hidden cylinder could be better cooled than one partially dangling in the breeze. Force incoming air through the cylinder fins (not around them) and have plenty of exit area, I usually recommend a downward spoiler on the leading edge of the bottom opening for exit air, to create a low pressure environment in the cowl, drawing the air out of the cowl.
04-10-2009 | 09:51 AM
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From: Bunkie,
LA
RE: DL-50 engine
guys check this out, I bought a new xoar prop, I took my time and balanced it properly, I bought a new NGK spark plug and put in the engine. Now it seems like the motor lugs down when I run it. Before I had the factory plug and was running a Pro Zinger prop and it was powerful. I have the oil mixed at 32:1. Why in the world would it all off a sudden do this? I thought buying a better prop and plug was going to help. I have a lil over one gallon through it, I know its still in the break in stage, but what im concerned about is, it wasnt running like this with the other stuff. Yall have any ideas?
04-10-2009 | 10:14 AM
#4510
RE: DL-50 engine
It's like the difference between driving a muscle car in the rain on city streets and driving it on the rubber laden track. Now you have traction, you will also need to retune because you changed the load on your engine.
04-10-2009 | 10:32 AM
#4511
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RE: DL-50 engine
ORIGINAL: Moki 1.8
guys check this out, I bought a new xoar prop, I took my time and balanced it properly, I bought a new NGK spark plug and put in the engine. Now it seems like the motor lugs down when I run it. Before I had the factory plug and was running a Pro Zinger prop and it was powerful. I have the oil mixed at 32:1. Why in the world would it all off a sudden do this? I thought buying a better prop and plug was going to help. I have a lil over one gallon through it, I know its still in the break in stage, but what im concerned about is, it wasnt running like this with the other stuff. Yall have any ideas?
guys check this out, I bought a new xoar prop, I took my time and balanced it properly, I bought a new NGK spark plug and put in the engine. Now it seems like the motor lugs down when I run it. Before I had the factory plug and was running a Pro Zinger prop and it was powerful. I have the oil mixed at 32:1. Why in the world would it all off a sudden do this? I thought buying a better prop and plug was going to help. I have a lil over one gallon through it, I know its still in the break in stage, but what im concerned about is, it wasnt running like this with the other stuff. Yall have any ideas?
04-10-2009 | 10:55 AM
#4512
RE: DL-50 engine
After you retune your engine you should also see a marked improvement in performance in the form of "pull" while flying your plane. Hovers at a lower throttle setting, accelerating uplines, better braking, etc.
04-10-2009 | 11:44 AM
#4513
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From: Bunkie,
LA
RE: DL-50 engine
OK guys, you are all correct. I just retuned the high needle and now its running like a champ. The prop is a 22x8, same as the pro zinger. But this prop has way much more pull. But like I said, I adjusted the the High speed needle and that thing is running strong. I had to lean it just a lil bit and that made all the difference. What I wa trying to say was, before I tuned it, when you would throttle up it would kinda lug down and sound like it was staining. But it would idle fine and transition really well, so I decided to play with the high side, and that did the trick. Thanks for all the post guys.
04-10-2009 | 11:48 AM
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From: Bunkie,
LA
RE: DL-50 engine
jedijody, you said... ( Hovers at lower throttle setting, accelaerating uplines, better braking ). What do you mean when you say better braking? Yall forgive me, I really dont know a whole lot about this.
04-10-2009 | 11:51 AM
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From: Kalona,
IA
RE: DL-50 engine
A slow spinning prop, when the plane is on downlines, slows the speed of the falling plane, as drag is induced by the prop spinning slower than the air passing by it. Braking.
04-10-2009 | 01:23 PM
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From: Roseville,
CA
RE: DL-50 engine
ORIGINAL: Paul Algar
Thanks Jody, I like the idea of hiding the engine in the cowl, pics of most extras and edges etc have the engine exposed through the bottom of the cowl. i will have to keep my eye out for a pitts style muffler from the horizontal.
Thanks Jody, I like the idea of hiding the engine in the cowl, pics of most extras and edges etc have the engine exposed through the bottom of the cowl. i will have to keep my eye out for a pitts style muffler from the horizontal.
Paul,
If you need a Pitts muffler for a horizontal mounted DL50, check this out.
http://www.rcuniverse.com/market/item.cfm?itemID=500589.
It mounts under the engine box. With the right header, it will work with any installation. Just mount the engine so the exhaust would be pointing down.
FYI, you can get a beautiful custom header from Karl Mueller at [email protected] for a very reasonable price. Send him an email.
04-13-2009 | 10:04 PM
#4522
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From: Miami beach, FL
RE: DL-50 engine
ORIGINAL: JoeAirPort
I prefer standard size servos. Those little ones seem too fragile for the gassers. I actually use high torque metal gear now. The vibrations is what kills them.
I prefer standard size servos. Those little ones seem too fragile for the gassers. I actually use high torque metal gear now. The vibrations is what kills them.
04-13-2009 | 10:17 PM
#4524
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From: Miami beach, FL
RE: DL-50 engine
Cost of the servos? I prefer the Hitec HS-5245 digital for the throttle. Fast, light, excellent centering (steady throttle), small dead-band.
They will match the price if you can find it cheaper elsewhere:
http://www.servocity.com/html/hs-524...ital_mini.html
They will match the price if you can find it cheaper elsewhere:
http://www.servocity.com/html/hs-524...ital_mini.html
04-13-2009 | 10:52 PM
#4525
My Feedback: (41)
RE: DL-50 engine
You don't want to know the cost of the ones I'm using. 5985 and 5955. The 5985 was about $75. The 5955 replacemnt, the 7955, is about $90. People make fun of my huge torque servos but I just don't want to worry about the throttle servo failing on me. For 3D 5-10 feet off the deck it's heavily relied upon servo. I'm sure the 5245 would work great but I just don't have the comfort factor....which is important to me.
