crashland 73

My Feedback: (24)

Im wondering if this 20 will fit inside the cowl of the new escapade. Anyone?

SpinnerRow

That's another plane that is on my Radar as well. There is a YouTube video or two of this setup. As you might expect a 1.20 size engine on a .60 size model has sick performance!

crashland 73

My Feedback: (24)

Yeah i just saw it just after i posted this lol! I also have considered a ucando.

sandyjain

Ditto that....

alex_scratch_built

Another noob to gassers question:

Does the spring in the spark plug cap really have a purpose? If so, what is it and is it bad to run the engine without it?

Thanks

jedijody

My Feedback: (1)

It's to enhance the ground path for the spark plug, it can run without it, no damage.

microdon2

My Feedback: (47)

Here's another noob gasser question: I've been advised by a learned party that, since I'm flying off of a dirt field I should have an air filter on the DLE20's (and any other engine, I guess) carb. Otherwise I'm sucking in lots of dust that will hurt the engine. The problem I see is that the choke plate extends out past the carb mouth, so covering that hole seems a bit problematic. I've thought about creating a sponge "box" to fix around it, or somehow tie a cloth around it, but I'm just guessing. I've also heard of "carb foam liquid", which, I guess, helps the foam absorb dust, or keep the foam pliable. Also have been told (and it makes sense) that all RC car racers need this type of filter, given the nature of their engine's proximity to all the dust they kick up. But I don't know what they use. So, until I go to my hobby shop to ask their ideas, does anyone have any advice for this (and other) gas engines? Thanks in advance.

Mike

jedijody

My Feedback: (1)

A velocity stack, foam filter media from the motor cycle shop, a zip tie or rubber band, and a little imagination.

TimBle

another noob question from me:

I see some folk are talking about looping the vent line. Why is this a good idea since it creates a longpath for overflow fuel.
Would a shorter path not be preferable?
Or does it serve as a hydraulic damper of sorts to prevent flooding the carb if you do over fuel?

ahicks

My Feedback: (2)

Regarding filters, I can understand the purpose, but think of them as overkill unless you're into racing your plane around on the ground? These engines are already lasting pretty much forever as is?

a1pcfixer

My Feedback: (7)

Look at one of the drains in your house sinks. See the elbow?
Ours works somewhat similarly, like a one way hydraulic valve.

The fuel in the line to our carb prevents the vent line (when coiled correctly)
from draining in reverse (inverted).

When looped our vent lines do ONLY that, just vent.

You have first hand experience of what happens when done wrong.

allans

My Feedback: (11)

I have written earlier on this forum about installing a DLE 20 on my OMP Profile Yak, replacing an OS102 FS. This post is describe the first running of the engine and first day of flying with it.

It was a non event. Engine started and ran beautiful right out of the box. No problems with the engine at all.

More power than I ever imagined. At the same weight ( roughly ) as the glow engine, the performance at this point , not broken in , is about the same .

I do have a couple of small questions.

The idle at startup runs a little high , but after about 30 seconds it slows down a bit to the correct setting. Does anybody know what might cause this ?

Is there an ignition setting for start up ? Is it the fuel supply pressure leveling out ?

I use Tec Arrow IBEC and after six 12 minute flights I have 78% capacity left on 6volt/ 1600 mili amp No BS Battery . That is a single battery for both the rx and Ignition.

There is no problem at all with use of a single battery for both IMHO. There are 5 high Torque and one standard on the plane.

I am currently building a Great Planes Chipmunk with a DLE 30 .

a1pcfixer

My Feedback: (7)

Yes.

Yes (ON), and no.
.

..


...

Oh, OK, you want a real answer about the idle.

Richen your LS screw a tad bit, AND dump the stock DLE/3 spark plug (they're junk).
Get a true NGK/CM-6 plug.

allans

My Feedback: (11)

Thank you for the answer.

How long does that startup ignition setting last ? Is it's duration time based? Or something else?

How about Honda Spark Plugs ?

allans

My Feedback: (11)

Also when say a tad is that 1/8 of a turn ? less or more ?

MetallicaJunkie

i got 8200 with a 17x6 beech Xoar seems kinda low but runs good!





you run your ignition staright to the receiver, with no "filter"?

a1pcfixer

My Feedback: (7)

There's NO special startup ign settings.

Honda 98052-56471 SPARK PLUG ***IS*** a (CM6)

As this seems to be your first venture into gassers, read this;

Newbie to Gas General Information
http://www.rcuniverse.com/forum/m_8673009/tm.htm

allans

My Feedback: (11)

Thank you . I will read the gasser intro section very closely.

But I am still curious - what causes the engine to run at a lower idle level after it is running for about 30 seconds?

Your previous post made reference to answer.

ahicks

My Feedback: (2)

It's whatever it takes to make it stop doing that, or at the very least, drop down quickly (2-3 seconds). 1/8 turn is likely pretty close.
Not sure about the Honda plug question. If you're asking about the Honda Generator application that uses the same plug, yup, that's the one!

ahicks

My Feedback: (2)

You're right on the edge of lean on your high speed likely. It's taking a second to cool down inside the combustion chamber when you pull it down to idle. The extra fuel not only helps prevent it from getting that hot, but cools it down much quicker when it does.

allans

My Feedback: (11)

Is this going to require adjustment?

It seems to be noticeable when I come in for a landing - but not a problem .

The lag is also present on throttle blips ,when landing . Again - not a problem - it is very manageable.

But if I could , without any unnecessary risk or fuss , like to live without it.

Thanks again.

A.

rlongenecker

Allans,

You asked, "The idle at startup runs a little high , but after about 30 seconds it slows down a bit to the correct setting. Does anybody know what might cause this ?"

You've been given two answers to your question:

"Richen your LS screw a tad bit, AND dump the stock DLE/3 spark plug (they're junk).
Get a true NGK/CM-6 plug."

"You're right on the edge of lean on your high speed likely. It's taking a second to cool down inside the combustion chamber when you pull it down to idle. The extra fuel not only helps prevent it from getting that hot, but cools it down much quicker when it does."

ahicks

My Feedback: (2)

My opinion = No. That's about as close to perfect as you're going to get. If you were trying to set it like that again, you likely could not.

allans

My Feedback: (11)

Thank you very much.

TimBle

I'm not really sure what happens when done incorrectly. I'm struggling to see how the vent will siphon even during inverted flight because the fluid pressure in the tank is quite low and the tank gas pressure is atmospheric, same as outside...
So essentially the loop provides a longer pathway for siphoned fuel...