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

Old 03-13-2011, 03:39 PM
  #3276
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Very short video of my DLE 20 in action. My World Models P-51 with a DLE 20. It has a Jtec Wrap Around Pitts muffler and an APC 15x10 prop. About 10lbs.

Scoots along pretty good.
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Old 03-13-2011, 03:46 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

It is really hauling along
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Old 03-13-2011, 03:51 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I have a World Models P-47 and i was wondering if I should use a DLE-20 or -30. Can you please show me your fuel tank, battery, etc setup for your Mustang?
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Old 03-13-2011, 05:48 PM
  #3279
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Tough call on the P-47 as it is about 70" correct? A bit bigger plane. It really depends on how you fly it. Me? I'd put the DLE-30 in it.
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Old 03-13-2011, 08:39 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I've got an Su-26m which has a 68inch which and should be no more than 10lbs...and I'm putting a DLE-30 in it. How much do you think the P-47 will weigh?

Quote:
ORIGINAL: SpinnerRow

Tough call on the P-47 as it is about 70" correct? A bit bigger plane. It really depends on how you fly it. Me? I'd put the DLE-30 in it.
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Old 03-13-2011, 08:56 PM
  #3281
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

mschultz531 - I recently picked up a used Carl Goldberg SU 26 - 72.5", and will be putting a DLE 30cc in. I'm expecting it to be a very good pairing. Should be interesting to compare notes.
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Old 03-13-2011, 09:13 PM
  #3282
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

microdon2,
I look forward to reading about your setting up and flying of the plane.
If you are interested, I have a build thread for the GoldWing Su-26m build:
http://www.rcuniverse.com/forum/m_10374977/tm.htm
-Mike

Quote:
ORIGINAL: microdon2

mschultz531 - I recently picked up a used Carl Goldberg SU 26 - 72.5", and will be putting a DLE 30cc in. I'm expecting it to be a very good pairing. Should be interesting to compare notes.
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Old 03-14-2011, 02:56 PM
  #3283
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)



I have a quick question on the nordlock washers.  It has been said to use size M4 on the exhaust bolts, but I was wondering if anybody knows whether the M5 nordlocks will work or if they will be to large?

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Old 03-14-2011, 03:08 PM
  #3284
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

They will be too big to work properly and will not fit inside the muffler "tubes".
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Old 03-14-2011, 03:24 PM
  #3285
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Thank you for your fast reply.  I thought that might be the issue but wanted to make sure.
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Old 03-14-2011, 06:15 PM
  #3286
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Hi, I have a DLE 20 that is a tad low on power (vess 17x6 at 8100rpms) which is ok, however I put a degree wheel on it today and checked the timing. The manual shows 38-40, which I think is way to high. However, when I went to check the timing, it showed to be right at 35. I have a dial indicator setup to show me 0 or TDC, so I am getting an accurate reading. Should I adjust this down to around 30? I live about 3300' ASL and run 91 ocatane gas with stihl ultra.



I do appreciate your help.

Thanks

Larry
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Old 03-14-2011, 06:19 PM
  #3287
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

28 to 30 degrees before TDC.
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Old 03-14-2011, 06:40 PM
  #3288
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

In order for me to set 30 deg, I have to slide the pick up all the way to one side. I am using a deg wheel, with dial indicator to indicate TDC. I then rotate the wheel clockwise to about 70 deg, then I start heading counter clock wise. When I hear/see the spark it's now at 30deg. It was like at 35 or 36. Are your guys pickups kind of centered or are they pushed to one side?

Thanks
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Old 03-14-2011, 06:50 PM
  #3289
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

From the factory they are centered
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Old 03-14-2011, 06:51 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

here is a pic of mine:
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Old 03-14-2011, 06:59 PM
  #3291
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

That is what mine looked like. I was just wondering so I popped a deg. wheel on and checke it out. It was reading 35deg. I find it hard to believe that with it being centered that it's that far off. any suggestions?
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Old 03-15-2011, 01:00 AM
  #3292
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


Quote:
ORIGINAL: noahb

.......................................The manual shows 38-40, which I think is way to high.....................................
Larry,

Look on page 19 of that manual and you'll find that manual was done by Hobby Services (aka Tower Hobbies/Hobbico), which also means the eng came to you one way or the other through Tower Hobbies. That particular manual has several errors in it.

The true DLE20cc eng manual from DLE has only a few pages and is a mix of English & Chinese, and has no mention of timing degrees.

Try something very simple and easy; Swap out that crappy DLE #3 spark plug yours came with, and put in a true NGK/CM-6 spark plug. Now, how does it run?
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Old 03-15-2011, 02:53 AM
  #3293
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I already replaced the plug. The engine runs pretty good. In fact, the only reason I checked the timing is I thought that the rpm might be down a tad. However, if it is truly suppose to be around 28-30 and it was at 35... I am sure the long term effect would not be good for the engine.

So, should I set it at 28-30 or leave it like other have where the pickup is centered?
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Old 03-15-2011, 03:55 AM
  #3294
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

First thing to do is throw the Tower manual away.

The possible bad effects of 35 degree total advance in a model airplane engine is that they may pop some on you during certain conditions. The most detrimental situations would be extreme ones that make conditions in your engine marginal in the first place. For example running a tuned pipe at extreme rpms or running camp stove fuel etc.
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Old 03-15-2011, 06:55 AM
  #3295
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

All this advice yet nobody gives the correct number. What is the correct number from DLE.

Quote:
ORIGINAL: a1pcfixer


Quote:
ORIGINAL: noahb

.......................................The manual shows 38-40, which I think is way to high.....................................
Larry,

Look on page 19 of that manual and you'll find that manual was done by Hobby Services (aka Tower Hobbies/Hobbico), which also means the eng came to you one way or the other through Tower Hobbies. That particular manual has several errors in it.

The true DLE20cc eng manual from DLE has only a few pages and is a mix of English & Chinese, and has no mention of timing degrees.

Try something very simple and easy; Swap out that crappy DLE #3 spark plug yours came with, and put in a true NGK/CM-6 spark plug. Now, how does it run?
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Old 03-15-2011, 07:04 AM
  #3296
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I used the "search thread" function and entered the word "timing" and found plenty of info on the timing issue.
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Old 03-15-2011, 07:11 AM
  #3297
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

You must have missed this in A1PCFixer's last post:
The actual DLE manual [which is written in Chenglish] DOES NOT STATE A CORRECT TIMING NUMBER.
Perhaps you might consider the collective advice of all the knowledgeable members in this forum who have been supporting the users of this forum and operating/tuning their own DLE-20's for quite some time already?
Using the correct spark plug and the factory timing, (which is 28-30 degrees BTDC, per Jody's post from 9/20/2010:
Quote:
The manuals on Tower's website incorrectly state the timing as 45 deg. BTDC. The DLE factory does indeed attempt to set the timing at 32* on all their engines, with varying degrees of success, they run best set at 28-30. The ignitions for the rear carbed 30 and the 20 do have a different timing curve with more retard to help them idle better, the full advance and static timing is the same as all the rest, 28-30 BTDC.

< Message edited byjedijody9/21/2010 12:51 AM>
might get you the results you desire: a properly running DLE-20.
Quote:
Larry,
Look on page 19 of that manual and you'll find that manual was done by Hobby Services (aka Tower Hobbies/Hobbico), which also means the eng came to you one way or the other through Tower Hobbies. That particular manual has several errors in it.
The true DLE20cc eng manual from DLE has only a few pages and is a mix of English & Chinese, and has no mention of timing degrees.
Try something very simple and easy; Swap out that crappy DLE #3 spark plug yours came with, and put in a true NGK/CM-6 spark plug. Now, how does it run?
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Old 03-15-2011, 07:43 AM
  #3298
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Thanks 28 - 30
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Old 03-15-2011, 07:45 AM
  #3299
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I love when people type the blah blah search yet answering the question takes a shorter amount of time.

Sorry we all don't have time to look at threads from 2010 especially when I am starting it up in 2 hours. Reality is most of these guys know the answer off the top of their head such as AP1.

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Old 03-15-2011, 07:54 AM
  #3300
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

The reality is after you've been reading this posting from its inception seeing the same questions being asked ad infinitum gets really irritating.
John

Search this thread at the top of the page
http://search.rcuniverse.com/search....3953+&i=timing
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