Gas Engines Questions or comments about gas engines can be posted here

DLE 20cc Gasser! (Data & Links 1st Post)

Old 07-05-2012, 11:08 PM
  #5551
mach2
 
mach2's Avatar
 
Join Date: Nov 2011
Location: bakersfield, CA
Posts: 1,107
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Do the DLE20 and 30 have the same exhaust port? I made a smoke muffler for my DLE20 and was wondering if it would fit a DLE30....
mach2 is offline  
Reply With Quote
Old 07-06-2012, 03:00 AM
  #5552
karolh
 
Join Date: May 2002
Location: Mandeville, JAMAICA
Posts: 6,223
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

No it will not fit. The mounting holes spacing is different as the 30 uses a bigger muffler.

Karol
karolh is offline  
Reply With Quote
Old 07-06-2012, 05:39 AM
  #5553
captinjohn
 
Join Date: Jan 2002
Location: Hesperia Michigan, MI
Posts: 12,873
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: KenD

Do a Google search for small engine shops in your area, I found 10.

I did a Google search also....... http://www.youtube.com/watch?v=Lvl5Gan69Wo
captinjohn is offline  
Reply With Quote
Old 07-15-2012, 07:15 PM
  #5554
cerralvo78
 
Join Date: Jul 2004
Location: La porte, TX
Posts: 33
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I just can not get a good reliable idle [>:][>:]
I got a good transition from idle to WOT
BUT the RPM's are not staying the same when i get back from WOT to idle
IT seems that the RMPS go higher(FROM 2000 to 4000)????/
then i re-adjust the idle seting(travel on my servo) and i try it again and it does the same thing

here is a video...

http://www.youtube.com/watch?v=gqdjf...ature=youtu.be

THANKS FOR YOUR HELP
cerralvo78 is offline  
Reply With Quote
Old 07-15-2012, 09:51 PM
  #5555
mach2
 
mach2's Avatar
 
Join Date: Nov 2011
Location: bakersfield, CA
Posts: 1,107
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

breaking it in makes it better. Use NGK CM6 and gap at .022-.024". And a CDI without the timing step helped mine. Such as a DLE55 ignition. And make sure your tuning is good of course.
mach2 is offline  
Reply With Quote
Old 07-16-2012, 04:20 AM
  #5556
ahicks
 
Join Date: Aug 2008
Location: Waterford, Mi/Citrus Springs, Fl
Posts: 3,457
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: cerralvo78

I just can not get a good reliable idle [>:][>:]
I got a good transition from idle to WOT
BUT the RPM's are not staying the same when i get back from WOT to idle
IT seems that the RMPS go higher(FROM 2000 to 4000)????/
then i re-adjust the idle seting(travel on my servo) and i try it again and it does the same thing

here is a video...

http://www.youtube.com/watch?v=gqdjf...ature=youtu.be

THANKS FOR YOUR HELP
There's a "step" in the ign. timing at about 2200 - 2500 rpm. Don't remember exactly, but that's what you're running into. You can get around this problem easily by running the engine on the rich side, which won't hurt a thing. If anything it'll have a more reliable idle (won't quit as easily).

Don't loose sight of the fact that the best ground tuned engine there is will still need to be retuned once in the air. Don't waste your time trying to get it perfect on the ground. Get it "good enough", then go fly it! -Al
ahicks is offline  
Reply With Quote
Old 07-16-2012, 04:45 AM
  #5557
acdii
 
Join Date: Jan 2011
Location: Capron, IL
Posts: 6,281
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Aint that the truth, just when you think you have it perfect, as soon as it is in the air, it shows some ugliness.  I think I have the low end figured out finally, at least now it transitions. Still only have a half gallon or less through it though.  It takes so long to go through a tank.
acdii is offline  
Reply With Quote
Old 07-16-2012, 05:42 AM
  #5558
karolh
 
Join Date: May 2002
Location: Mandeville, JAMAICA
Posts: 6,223
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Most chinese manufactured engines are known to have very hard rings and the DLE is no exception, and so they take quite a bit of running before they seat in the cylinder, so at only a half a gallon you still have quite a ways to go before the engine is broken in. The best thing is for you to tune the egine as best you can and just fly and fly, as that is the best way to break in an engine. As the ring begins to seat, the engine will become much easier to tune and will hold it's setting much better.

Karol
karolh is offline  
Reply With Quote
Old 07-16-2012, 06:04 AM
  #5559
acdii
 
Join Date: Jan 2011
Location: Capron, IL
Posts: 6,281
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I need more flying TIME! LOL  I only get to fly once a week, and only for a couple hours in the evening, and with 3 planes, the flights are short.  
acdii is offline  
Reply With Quote
Old 07-16-2012, 06:58 AM
  #5560
karolh
 
Join Date: May 2002
Location: Mandeville, JAMAICA
Posts: 6,223
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Well in that case you might have no other option but to do some ground running, just keep the run times short and avoid prolonged WOT runs, while giving ample cooling down periods in between runs.

Karol
karolh is offline  
Reply With Quote
Old 07-18-2012, 11:27 AM
  #5561
johnsh1234
 
Join Date: Jul 2012
Location: Scotland, UNITED KINGDOM
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Hi,

I have read through this post since it started and it has a huge amount of useful information, so thank you to those that made a positive contribution.

I ran my DLE20 for the first time yesterday, and it runs very well but the sound level is horrendous!.

Does anyone have a solution?

johnsh1234 is offline  
Reply With Quote
Old 07-18-2012, 11:45 AM
  #5562
karolh
 
Join Date: May 2002
Location: Mandeville, JAMAICA
Posts: 6,223
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Valley View sells a aluminium muffler silcencer which fits inside the end of the muffler stack that does in fact tone down the exhaust noise quite a bit.

Karol
karolh is offline  
Reply With Quote
Old 07-18-2012, 01:29 PM
  #5563
mach2
 
mach2's Avatar
 
Join Date: Nov 2011
Location: bakersfield, CA
Posts: 1,107
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

yep. valley view sells them as well as troy built models.

www.troybuiltmodels.com/items/TBMDLE20SILENCER.html


www.valleyviewrc.com/estore/muffler-silencer-20cc-30cc-55cc-111cc.html

I dont know how much it it reduces the sound, but Id imagine that it still has good sound. Probably comparable to a glow engine volume. I dont fly where there are noise restrictions. So I just enjoy the full glory of the aggressive bark from the 20!!!

Jeremy
mach2 is offline  
Reply With Quote
Old 07-18-2012, 04:10 PM
  #5564
kiwibob72
 
Join Date: Aug 2008
Location: Christchurch, NEW ZEALAND
Posts: 823
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: johnsh1234

Hi,

I have read through this post since it started and it has a huge amount of useful information, so thank you to those that made a positive contribution.

I ran my DLE20 for the first time yesterday, and it runs very well but the sound level is horrendous!.

Does anyone have a solution?


You make it sound like motor noise is a bad thing
kiwibob72 is offline  
Reply With Quote
Old 07-18-2012, 05:09 PM
  #5565
mach2
 
mach2's Avatar
 
Join Date: Nov 2011
Location: bakersfield, CA
Posts: 1,107
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Hahaha!

I think the first time someone runs the DLE20, the exhaust note catches them off guard. There really isn't a true muffler on it. just a box with a small stinger pipe off of it.

After you run it a couple times it's not so surprising and doesn't seem so loud. And it also depends on where you are when you do it. The first time I ran mine i was in a backyard area on concrete with a brick wall on one side and a house on the other. It was an open area but the sound was really magnified. So I was surprised at how loud it was. But in an open area like out at the flying field, its not nearly as loud.

I love the sound.

It may have been on this thread a while back, but there was a pic posted of a plane with a DLE sticker that said Darn Loud Engine in the small print. I thought it was pretty funny.....

Jeremy
mach2 is offline  
Reply With Quote
Old 07-18-2012, 05:17 PM
  #5566
Oldbob
 
Join Date: Jun 2005
Location: georgetown, TX
Posts: 628
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Motor noise sucks; quiet is better, put a canister on the Gassers. How would you like to drive a car with that much noise?
Bob
Oldbob is offline  
Reply With Quote
Old 07-18-2012, 06:01 PM
  #5567
tailskid
 
tailskid's Avatar
 
Join Date: Nov 2001
Location: Tolleson, AZ
Posts: 8,993
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

But I do
tailskid is offline  
Reply With Quote
Old 07-18-2012, 08:55 PM
  #5568
mach2
 
mach2's Avatar
 
Join Date: Nov 2011
Location: bakersfield, CA
Posts: 1,107
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Me too.

Saying something "sucks", that's as subjective as the sound of our planes is kinda weird. I dont like the way electric planes sound, but I wouldnt tell someone that their electric plane sucks, or that the way it sounds sucks.

And Im not sure how the car someone drives has anything to do with the sound of their model airplane, but if there is a comparison is to be made, then it kinda works against you. What do you have when you go to a hot-rod show? Or go to a Sonic drive in on a Friday night? Muscle cars and hot-rods with open headers or just some loud exhaust system with free flowing mufflers.

I think canister systems are really cool. They look really sweet and sound good. But Im a modeler on a budget, and they are pricey. Plus they add weight to the plane.

Not every plane I own is going to sound like the DLE20, but there isn't a thing wrong with having a hot-rod in the group. And by the way, I used to have a 2005 Cadillac CTS-V as my daily driver. I changed the cam for more lift and duration (which gave the exhaust a nice "cam lope"), as well as replaced the resonator with an open X pipe, and swapped the stock mufflers for some Magnaflow Race bullet mufflers. I enjoyed driving that car every day. But that's just me

Just my 2 cents,
Jeremy
mach2 is offline  
Reply With Quote
Old 07-19-2012, 05:08 AM
  #5569
acdii
 
Join Date: Jan 2011
Location: Capron, IL
Posts: 6,281
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

LOL, noise,  I converted my electric T-34 to glow because it was too quiet!   I had a 99 F350 diesel with a 5" exhaust! LOL  Spos the Harleys are too loud too. Well, some are obnoxiously loud, there is a limit to how loud something should be, but these are planes, and plane make noise.
acdii is offline  
Reply With Quote
Old 07-19-2012, 05:44 AM
  #5570
ghoffman
 
Join Date: Sep 2009
Location: Bedford, NH
Posts: 1,300
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

TBM has an insert for the stock muffler that helps somewhat.  

ghoffman is offline  
Reply With Quote
Old 07-19-2012, 05:50 AM
  #5571
Lifer
 
Lifer's Avatar
 
Join Date: Aug 2008
Location: Kansas City, MO
Posts: 3,866
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

2 simple ways to quiet the DLE 20:

First, get a piece of high-heat tubing such as silicone couplers for tuned pipes and force half of it over the pipe. Secure with a cable tie. Kinda ugly, but will take the bark out of its' tone. Or, second, take the muffler to your local hobby shop. Find a piece of brass tubing from the K&S display that is a tight fit inside the exhaust tube. Cut it off just where it sticks out. Remove and drill a series of 1/8th inch holes from side-to-side in the top inch of the pipe. Re-install and set in place with a small sheet metal screw and some red loctite.

Cheap, simple and effective. Neither has had a material effect on my engines' performance.
Lifer is offline  
Reply With Quote
Old 07-19-2012, 06:01 AM
  #5572
microdon2
 
Join Date: Apr 2009
Location: Whitestone, NY
Posts: 1,883
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Lifer = So the holes that you drill in the copper tubing - when you re-insert the copper tube into the muffler pipe - are the holes explosed, or is that copper tube completely inside the muffler pipe?
microdon2 is offline  
Reply With Quote
Old 07-19-2012, 06:13 AM
  #5573
rhd-RCU
 
rhd-RCU's Avatar
 
Join Date: Jan 2002
Location: burlington, WI
Posts: 710
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Flying fields have been lost because of the noise. What we like and what the rest of the community likes are two differnt things.
rhd-RCU is offline  
Reply With Quote
Old 07-19-2012, 09:30 AM
  #5574
Lifer
 
Lifer's Avatar
 
Join Date: Aug 2008
Location: Kansas City, MO
Posts: 3,866
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

The tube is completely inside the muffler and the outlet pipe. The holes are drilled into the area that is within the expansion chamber.
Lifer is offline  
Reply With Quote
Old 07-19-2012, 10:55 AM
  #5575
jsallade
 
Join Date: Oct 2004
Location: Fairland, IN
Posts: 127
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

So the copper tube is hidden inside and what you have effectively created is a baffle...?? I would imagine different sound levels and performance variations could be achieved by different sizes and number of holes drilled... interesting idea. I may just have to try 2 or 3 different ones to see which one gives a balance of performance versus sound reduction! I like playing with these slightly non-traditional "tuning" methods. Sounds like fun. Gotta go run to the nearest place to get some copper or brass tubing the right size... Hobby store and Hardware store aren't far apart here... guess I'll stop at both! Genius idea of a way to create this baffle [8D]. My compliments.
jsallade is offline  
Reply With Quote


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 02:50 PM.