a1pcfixer

My Feedback: (7)

Start with what you'll end up with....no 'break-in prop' but the one you fly in the end.

Lots of pages because there's loads of info here!
Do read Post #1

acdii

Has anyone run a 16x10 Zinger on this motor? I grabbed one for $2 the other day.

a1pcfixer

My Feedback: (7)

Zinger? Aren't those best used to stir paint?[&:]

Get a real prop, Xoar or Vess!

ghoffman

My Feedback: (3)

+1

acdii

I have 2 Xoar 16x8 and 17x8, but it is always good to have a spare, so I got a 16x10, Probably has the same pull as the 16x8 Xoar LOL

microdon2

My Feedback: (47)

I tried a Zinger once - got it cheap at a trade show. I was amazed at how much power was lost using this prop - lost about 1/2 the thrust of an APC. Hard to believe someone can sell a prop that's so inefficient. Guess they don't call them "Zinger"s for nothing.

a1pcfixer

My Feedback: (7)

As a spare, maybe.

But comparing a Zinger to either a Xoar or a Vess is like night vs day.
If there's maybe 15 brands of props in the world (maybe more), then the Zinger's are at or near the bottom with Xoar & Vess at or near the top of such a list.

acdii

Yeah, its a spare prop, as long as the DLE20 can spin it.  Heck maybe if the Xoar is too hot, the Zing can slow it down LOL

microdon2

My Feedback: (47)

Am about ready to start rebuilding my 70" Revolver with the DLE 20. But first... I have a generic gasser tuning question about my XYZ 50.

My XYZ 50 wasn't running great - wasn't getting high RPM's (was hitting maybe 5500 or so, instead of 7000 (that it should hit with a Xoar 20x10 prop), so I did some work on it tonight. Put on a new muffler (the old one had holes from crashes), checked inside the carb diaphragm and looked for dirt, and changed the manifold, between the carb and the engine. (the old manifold was pretty beat-up, also from crashes).

So now the engine sounds better and runs smoother at idle and through mid-throttle But when I get close to opening it (3/4 throttle) the engine bogs down so much it almost cuts out. I opened the High speed needle, but it didn't seem to help much. I opened the HS probably 1 - 1.5 turns more than the 2.25 it's supposed to start at. Any suggestions? The carb looks clean - no blockages or dirt inside that I can see. And the diaphram looks healthy. Should I open the Low speed more? (would have tried this but it was getting late). Thanks.

a1pcfixer

My Feedback: (7)

Sounds a lot like your ignition battery isn't good enough to do it's job. Try a new one?
Btw....have fewer crashes!

RiverLarry

Stir Paing Good one R/L

microdon2

My Feedback: (47)

a1pcfixer - "have fewer crashes" - NOW you tell us! Will look at the battery situation and the plug gap - thanks.

a1pcfixer

My Feedback: (7)

Well, you DID mention 'crashes' several times, so I thought I'd throw that clue in there. LOL!

.
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Larry.....when's your buddy Captnjohn coming home?

acdii

So, what you are saying is, don't take a crash course in landing techniques, eh?

captinjohn

I should be home around April 6....maybe a few days later even. Capt,n

microdon2

My Feedback: (47)

(I know this is not about a DLE 20, but I think these issues apply to all gassers, so... )

So I've got the XYZ 50 running nicely now. Steady idle and very good high end (will tac it tomorrow). Was a combination of opening the low speed needle and also adding liquid gasket to the surfaces and gaskets around the carb manifold. Seems like there might have been a slight air leak that was increasing with the higher RPMs. Now with the liquid gasket she's running very nicely. I also saw that the Halls Sensor had loosened slightly and shifted a touch, so I re-centered that. That didn't seem to make a difference.

One more recent issue with this plane - now when the engine is running the elevators shake and move intermittently on their own - my guess is radio interference. This intermittent movement is independent of whatever controls I do. I've had this plane for over a year and this is a new development. Can radio interference pop up out of nowhere? From what I see I can't find any obvious wear on any cables. Am wondering if Ch 2 on the receiver might be going bad (though the elevators work fine when the engine's not running). Any other thoughts? Guess I can swap in another EI to see if that's the cause. Any ideas on what I should look for that might be generating radio interference?

ahicks

My Feedback: (2)

Plug boot fully seated?

microdon2

My Feedback: (47)

I'm usually careful to fully seat the boot, though can't vouch for those particular instances in hindsight. And that plug boot is split at the seems - could that leak noise?

Right now I'm swapping in a new XYZ ignition. If this IS the cause then I want to salvage the old EI. Anyone know how to change the boot? Do you need a special tool to crimp this type of cable? Would hate to throw away a perfectly good CDI Rcxcl ignition because of the plug boot.

Will report back after I start this thing up.

mach2

My Feedback: (5)

www.valleyviewrc.com/estore/engine-parts/ignition-accessories/spark-plug-caps.html

if you got something like this im sure it would have instructions with it.

Id call valleyviewrc.com since they sell XYZ engines. They will tell you what size you need.

a1pcfixer

My Feedback: (7)

Just watch that you don't misplace the little resister!

microdon2

My Feedback: (47)

a1pcfixer - thanks for the step-by-step. Looks doable.

a1pcfixer

My Feedback: (7)

Look closely at photo #1, which shows the tiny resistor on the end - right portion of photo.
And be SURE (if you do one) to put the shrink wrap on loosely BEFORE everything else!

ahicks

My Feedback: (2)

That little resistor was the subject of quite a discussion not too long ago. There was a comment made by somebody in a position to know, that it's not necessary. Some engines are supplied with ignitions that use them, others that don't. SO, in the interest of simplicity/KISS, the next one I do is going to have a piece of safety wire in it's place. Will give that a try....

w8ye

My Feedback: (16)

Spark plugs like the 1/4-32 and the CM-6 use the resistor and the others do not because they use resistor type plugs..

ahicks

My Feedback: (2)

So sorry! If that's the case, I totally missed that fact! So I WILL be using a resistor For the CM-6 boots! (That's all I run...)