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Erotic idling

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Old 10-15-2012, 05:38 AM
  #1
crooked stripe
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Default Erotic idling

I have been flying nitro engines for some 5 years now and have just purchased my first gasser. DLE30 is motor of choice and Iam installing it in a Super Decathlon. The motor starts good and runs without any problems except it idles so rough. I have tried tuning the low end in hops it will smooth out with no progress. Engine oil is mixed 40/1 and Iam running a 16x6 prop. I have flown the plane around 60 minutes total combined flights. Ihave noticed when going from a higher rpm back to an idle the motor slowsdown till it almost stalls thus I am keeping the idlesomewhat high so it don'tstall on approach. Will the engine smooth out with more run time? Is there some adjustment Iam missing. Any help would be greatly appreciated. rj
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Old 10-15-2012, 05:42 AM
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HighPlains
 
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Default RE: Erotic idling

I must have the wrong cable package
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Old 10-15-2012, 06:41 AM
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Default RE: Erotic idling

I can honestly say that I don't have any "erotic" motors. I have had some "erratic" ones though!
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Old 10-15-2012, 06:46 AM
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Edwin
 
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Default RE: Erotic idling

Mine acted similar and turned out to have some debris in the inside filter screen. This was a new out of the box engine with about an hours time on it.
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Old 10-15-2012, 06:50 AM
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Default RE: Erotic idling

A Larger correct size prop would do wonders for that idle
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Old 10-15-2012, 06:55 AM
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Edwin
 
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Default RE: Erotic idling

GOOD CATCH W8YE. I missed that completely. I run 18x10 on mine. Others run 18x8.
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Old 10-15-2012, 08:08 AM
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Quote:
ORIGINAL: crooked stripe

I have noticed when going from a higher rpm back to an idle the motor slows down till it almost stalls thus I am keeping the idle somewhat high so it don't stall on approach.
That's the classic sign of the low speed needle being set TOO RICH.

Turn the LS needle in a bit at a time until this stops altogether and the engine maintains a consistent speed, then SLIGHTLY back the needle out about 1/16 of a turn.

That will cure the problem.

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Old 10-15-2012, 03:06 PM
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Default RE: Erotic idling

And remember to balance that correct size prop before you lean out the low end. I have a couple of sexy looking engines myself but I have never seen them as erotic.
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Old 10-15-2012, 03:29 PM
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Edwin
 
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Default RE: Erotic idling

About the most erotic is a radial. Ooooh yeah baby!!!
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Old 10-15-2012, 04:43 PM
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Default RE: Erotic idling

Just get it stroked and bored!

Sorry, couldn't leave that one on the table.
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Old 10-15-2012, 04:44 PM
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crooked stripe
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Default RE: Erotic idling

Thanks for the info. I will change the prop and do the adjustment. I can't explain the prop, that size is just stuck in my mind. You have to admit that title did get your attention. Simply, I can't spell. rj
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Old 10-15-2012, 05:52 PM
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Default RE: Erotic idling

Who can, the guys that think they are teachers drive everyone crazy. Learning to type is as hard as learning to spell. And yes, it got peoples attention but everyone knows what you mean, no big deal but fun to play with.
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Old 10-15-2012, 08:18 PM
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Quote:
ORIGINAL: mscic-RCU

I can honestly say that I don't have any "erotic" motors. I have had some "erratic" ones though!
LOL... Classic.

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Old 10-15-2012, 09:46 PM
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Default RE: Erotic idling

Yes, changing your prop will work wonders. Additionally, the DLE engines a sold with a very substandard spark plug. Ensure you change it to an NGK CM-6 if you have not already.
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Old 10-15-2012, 10:31 PM
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Default RE: Erotic idling

P&W R-2800. Now THERE'S an "erotic" idle. Hearing one gets me going every time!
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Old 10-15-2012, 11:19 PM
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Default RE: Erotic idling

I was so looking forward to pictures!!!!!
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Old 10-16-2012, 04:13 AM
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Default RE: Erotic idling

Oh don't..please.Funniest stuff i've read in ages.Please keep going
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Old 10-16-2012, 04:20 AM
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Default RE: Erotic idling

I like my Supercharged YS.... "Injection Is Nice, But I'd Rather Be Blown"....
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Old 10-16-2012, 04:37 AM
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LostParts
 
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Hmmm, I thought this was about something else.
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Old 10-16-2012, 05:46 AM
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Default RE: Erotic idling

This is why props are better than jets...never heard of an erotic jet......better to screw through the sky than suck and blow
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Old 10-16-2012, 06:06 AM
  #21
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Default RE: Erotic idling

Suck Sqeeze Bang Blow (combustion process we learned for jet engines) doesnt get any more erotic.
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Old 10-16-2012, 06:37 AM
  #22
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Default RE: Erotic idling


Quote:
ORIGINAL: jetmech05

This is why props are better than jets...never heard of an erotic jet......better to screw through the sky than suck and blow


OMG, that is so funny

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Old 10-16-2012, 07:38 AM
  #23
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Default RE: Erotic idling

I was expecting some videos.

But seriously, a guy at the club has had the same problems with his DLE30. He kept using the original spark plug until is cracked. He also had the engine quit in the air a few times. He kept tweaking the needles with limited success. He also blamed the fuel filters a couple of times. But in the end, he returned the needles to the factory settings and started the tuning process all over again. It got better, but he still has occassional issues with it. He is a good flyer and has a lot of experience with other engines, glow and gas. This one has him stumped.
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Old 10-16-2012, 07:56 AM
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Edwin
 
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Default RE: Erotic idling

It took a couple of gallons for mine to settle down. But I also soldered the choke plate hole shut too. A whole lot easier starting now.
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Old 10-16-2012, 08:07 AM
  #25
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Default RE: Erotic idling

Dang, Giant Scale beat me to it!! I have gotten a lot of the DLEs running nice and smooth for other people at the field just changing the Chinese No Name Mystery Plug with a real CM-6, makes a lot of difference. The plug that comes in the DLE is fun to pull and ground then roll over the engine and watch how it arcs all over the place except where it should.
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