DL-50 engine
05-30-2008 | 06:58 PM
#1876
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RE: DL-50 engine
ORIGINAL: rigofly
Hello everyone, this is my first post in RCU forum. I hope my english is correct
:
I'm going to prepare a test bench for fisrt run of my DL50 (this is my first gas engine) so I have to drill my wood propeller according to the DL drive washer (I'm building a proper jig with my lathe & mill for this pourpose). As I've seen different drilling arrangement on the web, I'm now not sure about best drilling jig orientation for drilling the prop: with holes in line with prop blade (like a "+") or with holes in "X" position" ? Please see the two different examples into the attached picture.
Thanks a lot and sorry again for my bad english
Riccard
Florence (Italy)
Hello everyone, this is my first post in RCU forum. I hope my english is correct
:I'm going to prepare a test bench for fisrt run of my DL50 (this is my first gas engine) so I have to drill my wood propeller according to the DL drive washer (I'm building a proper jig with my lathe & mill for this pourpose). As I've seen different drilling arrangement on the web, I'm now not sure about best drilling jig orientation for drilling the prop: with holes in line with prop blade (like a "+") or with holes in "X" position" ? Please see the two different examples into the attached picture.
Thanks a lot and sorry again for my bad english
Riccard
Florence (Italy)
05-31-2008 | 10:43 AM
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From: hull, UNITED KINGDOM
RE: DL-50 engine
Hi, you mention Bob in your post. Is he the DL agent in the US?. What is the approximate price of a DL 50 and do you know if he ships to the UK?. I don't think there is an agent here yet.
06-01-2008 | 07:05 PM
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From: melbourne, AUSTRALIA
RE: DL-50 engine
hi i have a dl-50(what else!) am very happy with my engine. My question is this: runs great, slight burble on idle and around 1/3 - mid throttle, engine has about 8 litres of fuel through it. sounds powerful and feels powerful, slight smoke popping out at idle. seems slightly righ on low end. if i lean lsn it sounds smoother and can idle lower and burble is less noticable during slow transition. but sounds less powerful feels slightly less powerful but could just be running smoother, am running a bolly wood prop 22x8.
my question is which state of tune is more correct? is on an MTW can. spark plug is more black than white.
Thanks
my question is which state of tune is more correct? is on an MTW can. spark plug is more black than white.
Thanks
06-01-2008 | 08:19 PM
#1880
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RE: DL-50 engine
I found the low needle is quite sensitive. If set slightly rich, the engine will burble in the middle, when transite from high to middle. Right now, it is at 1.25 turns out. Greate transition both ways. The high is at 1.5 turns out to get the good high RPM.
I would think in your case, the low could be on the rich side.
I would think in your case, the low could be on the rich side.
06-02-2008 | 09:50 AM
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From: Irving,
TX
RE: DL-50 engine
Greetings all,
My web site host had an electrical explosion and fire on Saturday so my website and email have been down since then. They're telling me it should be back up by tomorrow (Tuesday) morning. In the meantime, I can still be reached by phone (972-869-9313) and personal email account [email protected]
Sorry for the inconvenience.
Regards,
Bob
www.dlusa.net
My web site host had an electrical explosion and fire on Saturday so my website and email have been down since then. They're telling me it should be back up by tomorrow (Tuesday) morning. In the meantime, I can still be reached by phone (972-869-9313) and personal email account [email protected]
Sorry for the inconvenience.
Regards,
Bob
www.dlusa.net
06-02-2008 | 12:13 PM
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From: Friendswood,
TX
RE: DL-50 engine
I've got mine dialed in. Running Xoar 22X8, it's got no burble, fast transitions and 7100 top end. However, it will not idle below 2000 with the throttle closed. I will have to solder the hole shut.
06-02-2008 | 12:27 PM
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From: Meridian,
ID
RE: DL-50 engine
Well just calld Bob at DL USA and ordered a DL50
I am pretty pumped up. Cant wait to get it here and get it installed. From following this thread for the last 4 months I think I have made the right decesion. I will let you all know when it arrives, post some pics and all that good stuff.
I am pretty pumped up. Cant wait to get it here and get it installed. From following this thread for the last 4 months I think I have made the right decesion. I will let you all know when it arrives, post some pics and all that good stuff.
06-02-2008 | 02:18 PM
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From: , PA
RE: DL-50 engine
Hey everyone, quick question.... I have an H9 extra 260 and I'm getting a DL 50 for it, now are the 2 5/8 standoffs that come with it long enough??? For a DA 50 aplication they say to use the 3 inch ones so I'm not sure if the DA 50 dimentions are the same as of the DL 50, length wise at least....... any info on that would be great, thanks
06-02-2008 | 04:53 PM
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From: melbourne, AUSTRALIA
RE: DL-50 engine
coronabob,
maybe try running a larger prop. 20x8 is small for a dl-50. my fav is 22x8, but lots like the 23x8. thats 3 inches bigger than yours. your idle will come down with a bigger prop. try this before closing the hole up. you may not still get 7100 rpm, then again maybe you will! let us know how it goes
maybe try running a larger prop. 20x8 is small for a dl-50. my fav is 22x8, but lots like the 23x8. thats 3 inches bigger than yours. your idle will come down with a bigger prop. try this before closing the hole up. you may not still get 7100 rpm, then again maybe you will! let us know how it goes
06-02-2008 | 05:06 PM
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From: Friendswood,
TX
RE: DL-50 engine
salerno,
Sorry, my bad. I do have a Xoar 22X8. I have edited my post.
BTW, the Xoar 22X8 gives my WH 330LX unlimited vertical and good pullout. Compared to my older BME 3.5 that I had on the plane, the DL-50 is simply awsome. Other than the fast idle, it runs like a top.
Sorry, my bad. I do have a Xoar 22X8. I have edited my post.
BTW, the Xoar 22X8 gives my WH 330LX unlimited vertical and good pullout. Compared to my older BME 3.5 that I had on the plane, the DL-50 is simply awsome. Other than the fast idle, it runs like a top.
06-02-2008 | 07:26 PM
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From: Maryville,
TN
RE: DL-50 engine
ORIGINAL: coronabob
salerno,
Sorry, my bad. I do have a Xoar 22X8. I have edited my post.
BTW, the Xoar 22X8 give my WH 330LX unlimited vertical and good pullout. Compared to my older BME 3.5 that I had on the plane, the DL-50 is simply awsome. Other than the fast idle, it runs like a top.
salerno,
Sorry, my bad. I do have a Xoar 22X8. I have edited my post.
BTW, the Xoar 22X8 give my WH 330LX unlimited vertical and good pullout. Compared to my older BME 3.5 that I had on the plane, the DL-50 is simply awsome. Other than the fast idle, it runs like a top.
06-03-2008 | 05:24 PM
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From: melbourne, AUSTRALIA
RE: DL-50 engine
hey, i just noticed on my dl-50 where the crankcase halves join, there is a little fuel that comes out on case. engine is still running fine but will it start to run crap? does it matter. is there potential for tuning problems? should i pull the motor apart and fit new gaskets?
06-03-2008 | 10:44 PM
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From: Joplin,
MO
RE: DL-50 engine
ORIGINAL: JohnMcGowan
Hey guys, Im thinking about getting a DL50 for a Skyshark Christen Eagle. I will have to use a 20 inch prop due to ground clearance. Will that be a problem with this engine, causing it to turn up more than it needs to?
Thanks,
John
Hey guys, Im thinking about getting a DL50 for a Skyshark Christen Eagle. I will have to use a 20 inch prop due to ground clearance. Will that be a problem with this engine, causing it to turn up more than it needs to?
Thanks,
John
06-04-2008 | 10:10 AM
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From: Fries,
VA
RE: DL-50 engine
ORIGINAL: Amyst
Hey everyone, quick question.... I have an H9 extra 260 and I'm getting a DL 50 for it, now are the 2 5/8 standoffs that come with it long enough??? For a DA 50 aplication they say to use the 3 inch ones so I'm not sure if the DA 50 dimentions are the same as of the DL 50, length wise at least....... any info on that would be great, thanks
Hey everyone, quick question.... I have an H9 extra 260 and I'm getting a DL 50 for it, now are the 2 5/8 standoffs that come with it long enough??? For a DA 50 aplication they say to use the 3 inch ones so I'm not sure if the DA 50 dimentions are the same as of the DL 50, length wise at least....... any info on that would be great, thanks
The 2 5/8 standoffs will work great on the H9 260. My buddy has the same setup. The DL50 is about 3/8 longer than the DA50 (from prop washer to back of the mounting tabs).
06-04-2008 | 10:15 AM
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From: Fries,
VA
RE: DL-50 engine
ORIGINAL: salerno
hey, i just noticed on my dl-50 where the crankcase halves join, there is a little fuel that comes out on case. engine is still running fine but will it start to run crap? does it matter. is there potential for tuning problems? should i pull the motor apart and fit new gaskets?
hey, i just noticed on my dl-50 where the crankcase halves join, there is a little fuel that comes out on case. engine is still running fine but will it start to run crap? does it matter. is there potential for tuning problems? should i pull the motor apart and fit new gaskets?
If raw fuel is present, and it's not coming out of the carb... you could have a problem down the road.. with an air leak.. and problems running.. because the engine will not pump the carb correctly.
I would find out where the fuel is coming from... Make sure all the bolts are tight...
Is it raw fuel? burnt fuel?
06-04-2008 | 10:19 AM
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From: Fries,
VA
RE: DL-50 engine
ORIGINAL: JohnMcGowan
Hey guys, Im thinking about getting a DL50 for a Skyshark Christen Eagle. I will have to use a 20 inch prop due to ground clearance. Will that be a problem with this engine, causing it to turn up more than it needs to?
Thanks,
John
Hey guys, Im thinking about getting a DL50 for a Skyshark Christen Eagle. I will have to use a 20 inch prop due to ground clearance. Will that be a problem with this engine, causing it to turn up more than it needs to?
Thanks,
John
John,
You might could try a 20x12... Your Eagle will be fast...
IMO, the bench mark props for the DL50 are Vess 22B, and Vess 23A...
If money is not an issue a nice Biela 21x10 3 Blade prop would work great on the Eagle.
Also, Xoar has nice 3 Bladed Wood props... 21x10 or 20x10 is what to look for.
06-04-2008 | 01:18 PM
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From: Phoenix,
AZ
RE: DL-50 engine
Hi guys.
So it looks like my club is finally adopting a 94decible limit on our planes. I am wondering if the stock muffler is above 94. I know I am going to need to take the plane down to the field to get tested as there are many factors that contribute to noise. I would like to have a quiter plane anyway. So, any ideas on an aftermarket muffler that will for sure bring the noise below 94. I am concidering both a rap around pitts or a tuned pipe. Not sure what is the most economical.
Thanks
So it looks like my club is finally adopting a 94decible limit on our planes. I am wondering if the stock muffler is above 94. I know I am going to need to take the plane down to the field to get tested as there are many factors that contribute to noise. I would like to have a quiter plane anyway. So, any ideas on an aftermarket muffler that will for sure bring the noise below 94. I am concidering both a rap around pitts or a tuned pipe. Not sure what is the most economical.
Thanks
06-04-2008 | 02:11 PM
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From: newark, UNITED KINGDOM
RE: DL-50 engine
Fast idle:- Air leak somewhere! Mine will close down to a clunk, clunk, clunk, clunk idle if I let it.
Muffler:- Zimmerman tuned stainless muffler and headers for Zenoah 62 fit (with bolt holes slightly opened at the manifold) and are very quiet and powerful. Pitts won't do much unless it's a big one - your limit is quite high so it should achieve that tho. The standard muffler is many dBs too high - even if you live at Cape Canavaral !
20" prop is too small. Even with a big pitch. Squeeze an inch more clearance from somewhere if you can.
Muffler:- Zimmerman tuned stainless muffler and headers for Zenoah 62 fit (with bolt holes slightly opened at the manifold) and are very quiet and powerful. Pitts won't do much unless it's a big one - your limit is quite high so it should achieve that tho. The standard muffler is many dBs too high - even if you live at Cape Canavaral !
20" prop is too small. Even with a big pitch. Squeeze an inch more clearance from somewhere if you can.
06-04-2008 | 02:26 PM
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From: Roseville,
CA
RE: DL-50 engine
ORIGINAL: dogshome
Muffler:- Zimmerman tuned stainless muffler and headers for Zenoah 62 fit (with bolt holes slightly opened at the manifold) and are very quiet and powerful.
Muffler:- Zimmerman tuned stainless muffler and headers for Zenoah 62 fit (with bolt holes slightly opened at the manifold) and are very quiet and powerful.
Dogshome,
Re the G62 header, how much do you have to enlarge the holes for it to fit a DL50?
Thanx Rich
06-04-2008 | 02:46 PM
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From: newark, UNITED KINGDOM
RE: DL-50 engine
A millimeter on each one. I used a needle file and took them closer together by 1mm each. With the stainless header there is enough room to do that, if it was an aluminium one you might not get the screw heads in.
This (with the carb into the fuz) passes our UK test which is 82dB(a) at 7 metres.
This (with the carb into the fuz) passes our UK test which is 82dB(a) at 7 metres.
