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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)
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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/24/2011 8:16 PM   
vinmech


 

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/25/2011 2:55 AM   
captinjohn


 

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Status: offline 		I got a question for you pros on this thread.   I have a Red max Zenoah engine & was going to install the magnet & sensor on a disk on rear of engine.  But I got to thinking with fixed ignition...that could be done RIGHT? But with a auto advance ignition...will the advance be in the correct direction?  Thanks  Capt,n

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/25/2011 3:21 AM   
Craig 01


 

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Status: offline 		Yes and yes.just time for 28 degrees before TDC.The electronic auto advance ignition unit and sensor does not know which direction the engine spins its magnet past the sensor so will work with anti clockwise and clockwise crank rotation.A mechanical advance fixed timing electronic system with sensor advance set off throttle would need reversing with reversed crank rotation .
In your case,crank rotation stays the same.

< Message edited by Craig 01 -- 3/25/2011 3:53 AM >

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/25/2011 6:08 AM   
jedijody



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Status: offline 		I've re-timed engines for counter clockwise rotation several times, the sensor and module cannot tell the difference, flip the prop over  and you have a pusher.

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/27/2011 7:01 PM   
sandyjain


 

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Status: offline 		Jody, I need some help.

I had a bad crash of my extra 260 with the DLE20 today. :-(
I might need a new ignition.
Is there a spare DLE 20 ignition #4 available ? If not, can I use a standard Rcexl ignition ? What will be the the setting for the sensor ?

I hav some one coming to India from the US - DC area. Would like it shipped to him.

Regards

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/27/2011 7:33 PM   
jedijody



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Status: offline 		We have both modules in stock. I've very plainly explained the differences in them, my personal preferences, and what each of them should be timed at very recently in this forum. You need to decide for yourself which one you want.

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/27/2011 8:15 PM   
spaceworm


 

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Status: offline 		Would you please tell us the post number you refer to for your preference and timing issues? Thank you.

Sincerely, Richard/Club SAITO #635

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/27/2011 9:12 PM   
jedijody



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Status: offline 		Though I do have a preference, I have no timing issues.

http://www.rcuniverse.com/forum/fb.asp?m=10402619

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/27/2011 9:20 PM   
crashland 73



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Status: offline 		My dle20 has the #4 module & my dle30 has the #3, whats the diff?

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/27/2011 9:22 PM   
jedijody



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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/27/2011 10:27 PM   
a1pcfixer



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quote:

ORIGINAL: jedijody

1.0


LOL!!!
I almost spit my drink all over my keyboard.

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/28/2011 12:00 AM   
crashland 73



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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/28/2011 2:53 AM   
captinjohn


 

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Status: offline 		No reply...but here is the post about the timing of Rcexl ignitions.
Here's the deal with the timing, if you have one of the modules with #4 on it (stock DLE20) the timing is best at ~35*, if you have a standard Rcexl ignition with no numbers on it (says Rcexl on the module, not DLE) set it at 28*-30*. The module for the DLE20 has changed but even the original was set at 35*, personaly I prefer the standard Rcexl ignition at 28*. Either one will make the engine run very well but the #4 module will let the engine idle stupid slow, much slower than necesary.
There ya go..............


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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/28/2011 3:08 AM   
sandyjain


 

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Status: offline 		Thanx jody and Capt., can I use my DLE55 ignition with the sensor set at 28* before TDC ? This is just to check if the engine is OK otherwise ?

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/28/2011 3:29 AM   
jedijody



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Status: offline 		Yes, the DLE55 ignition is the standard Rcexl igniton, time it at 28* BTDC.

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/28/2011 3:57 AM   
sandyjain


 

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quote:

ORIGINAL: jedijody

Yes, the DLE55 ignition is the standard Rcexl igniton, time it at 28* BTDC.


Thanx Jody that was quick.... :-)

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 7:54 AM   
TimBle


 

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Status: offline 		JediJody,

The DLE website says that the CDI can b run off a 6.6V LiFe Battery pack with a regulator, but the manual only refers to 6.0V operating voltage.
 I assume the website is upto date but will my DLE 4# CDI unit handle the 6.6V LiFe battery pack?




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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 12:44 PM   
Clay Walters


 

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Status: offline 		No. Put a UBEC or diode between the pack and the ignition so as not to exceed 6.0 volts.


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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 1:56 PM   
dwreel



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Status: offline 		What value would be correct for the diode ?


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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 2:14 PM   
a1pcfixer



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Status: offline 		Go to the top of this page and click on "Search This Thread",
then enter diode

You'll easily find numerous postings on this.

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 2:27 PM   
a1pcfixer



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quote:

ORIGINAL: TimBle

...........The DLE website says that the CDI can b run off a 6.6V LiFe Battery pack with a regulator, but the manual only refers to 6.0V operating voltage.
 I assume the website is upto date but will my DLE 4# CDI unit handle the 6.6V LiFe battery pack?





THAT web site is by Hobbico/Tower Hobbies, and NOT the official DLEngines web site.
It states "LiPo requires a regulator", not LiFe.

Now go back to this thread's first msg, and my recap of info here.
Click on the link "Ignition draw + Voltage issues......"

Then see my reply to dwreel

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 2:31 PM   
SpinnerRow



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quote:

ORIGINAL: dwreel

What value would be correct for the diode ?

I'm using a 1N4007

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 6:05 PM   
jedijody



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quote:

ORIGINAL: TimBle

JediJody,

The DLE website says that the CDI can b run off a 6.6V LiFe Battery pack with a regulator, but the manual only refers to 6.0V operating voltage.
 I assume the website is upto date but will my DLE 4# CDI unit handle the 6.6V LiFe battery pack?


Please pardon the copy and paste but I'm tired of typing it all out, this question is asked almost every other page. With a little effort searching for answers one can almost always learn something else, maybe even the next thing they're going ask.

The DLE factory manual doesn't state any battery or voltage, the Hobbico manual says a 4.8 or 6.0 volt battery, the Rcexl instructions say 4.8-6.0 volts, it even states to use a diode or regulator if using 2 cell LiFe or A123 packs to drop voltage to below 6 volts. The very latest from Rcexl says that 7.0 volts is the maximum their ignition can handle but a single cylinder ignition is then drawing a full 1 amp from the battery when it can easily do its job on less than 1/2 that current. That means the excess is dissipated within the ignition as heat, not good for electronic devices.

That said, I work on these engines everyday, the failure rate for the ignitions run on straight 2 cell Life batteries is more than 5 times that of those run at below 6.000 volts. Those that survive the warranty period still die a very premature death and cost about $80 to replace. Personally I don't care if you want to use a car battery for your ignition and I have no problem replacing them under warranty if they fail, they give me new ones free, no questions asked. BUT, Rcexl, Hobbico, DLE, and certainly not myself will replace your airframe or replace your flying time or relieve any of the hassle having a bad ignition day will cause.

I've recommended countless times what's the safest, most reliable, provides the longest battery life, and the longest duty cycle for your ignition. Exceeding 6.000 volts only has draw backs, zero advantages, no performance advantages whatsoever.

Again, the diode is a 1N4007, 3 cents each, http://www.alliedelec.com/search/productdetail.aspx?SKU=2660007

Attachments
Click to see the file in new window.Attachment.pdf Click to see the file in new window.Attachment.pdf


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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 6:07 PM   
sandyjain


 

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Status: offline 		The diode required to drop the voltage from a 6.6V LiFe is 1N4001 - it drops the V by 0.9V and so the output becomes 5.7V ideal for the CDI.
What I have done is to solder 2 male futaba connectors to a LiFe 6.6V. 1 goes directly to the Rx thru a switch and the other has a 1N4001 in series and goes to the CDI thru another switch.
hope this helps....

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RE: NEW DLE 20cc Gasser! (Data & Links 1st Post) - 3/31/2011 6:12 PM   
jedijody



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Status: offline 		Rcexl recommends the 1N4007 diode, not the 1N4001.

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