RE: DL-50 engine

RE: DL-50 engine
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RE: DL-50 engine - 7/6/2008 12:10:40 AM

chuck l

Posts: 918
Joined: 11/21/2002
From: Fort Myers, FL, USA
Status: offline

BOUND_4_HELL

Thanks for posting this info, it is quite valuable. However, at slight correction is needed in the 1.7MM measurement, it should be .067" not 1.067".

Chuck

The height of the Metering Lever on any diaphragm carburetor is critical for controlling when and how far the inlet needle 'pops' open, thus configuring the engine's acceleration characteristics. If the Metering Lever height is set too high, it may create a rich condition, while a Metering Lever set too low may create a lean condition. The height of the Metering Lever must be 1.7 mm or 1.067" (WG carbs) and 1.45 mm or 0.057" (WB carbs) below the edge of the carburetor body. Walbro sells a calibrated brass plate gage to be used as depth meter (Walbro item # 500-13-1) available through most power tool shops.

(in reply to BOUND_4_HELL)

Post #: 2076

RE: DL-50 engine - 7/6/2008 1:15:29 AM

BOUND_4_HELL

Posts: 136
Joined: 10/21/2005
From: Mississauga, ON, CANADA
Status: offline

Hi Chuck,

Thanks for the correction .........

Sorry about that, I just copied from the article and did not check the figures in thousands. Up here in the Great White North we measure in millimetres. I corrected the original post.

Geppino

(in reply to chuck l)

Post #: 2077

RE: DL-50 engine - 7/6/2008 1:28:34 AM

lil-redrex

Posts: 46
Joined: 8/30/2005
From: WestAust, AUSTRALIA
Status: offline

According to RCXCEL who make the ignition, the spring that fits inside the plug cap is not actually needed.

Is just an extra insurance policy to help ensure good contact is made to the plug.

To be sure to be sure I suppose.

AS long as plug cap is in good nic and it and the plug are clean, they have told me it wont make a difference.

Cheers

(in reply to BOUND_4_HELL)

Post #: 2078

RE: DL-50 engine - 7/6/2008 2:35:03 AM

denney47

Posts: 187
Joined: 3/27/2004
From: Graham, WA, USA
Status: offline

quote:

ORIGINAL: gr8taz nitro

quote:

ORIGINAL: denney47

quote:

ORIGINAL: Bob Pastorello

Have you tried a different ignition?

Wrap your ignition module in fine screen wire and see if your problem goes away, if it does it is your module.
Tom
Valley View RC

Would aluminum foil work? I don't have any screen wire, could buy some if I need to, but I've got plenty of foil if that will also work.

We have not tried aluminum foil but I don't see why it would not work. I would not suggest this for a fix but only to test your module.
Let me know how it goes.
Tom
Valley View RC

(in reply to gr8taz nitro)

Post #: 2079

RE: DL-50 engine - 7/6/2008 5:33:47 AM

krproton

Posts: 530
Joined: 8/5/2007
From: Champaign, IL, USA
Status: offline

What's all this about "metering levers," and gr8taznitro, I hope you get your engine figured out. I hate to brag about how good my engine is running in light of your problems, but I can't help it.

Well, about six more tanks of fuel this morning. Went through the two gallons of break-in fuel (with the Lawnboy). I said it before, but man, with the DL this is like a whole other plane!!! The power isn't what I would call "stupid," but let me put it this way, I don't even use full throttle for vertical up lines, otherwise, the plane gets out of sight in a hurry! I just can't express how pleased I am with this engine (I know, I know, I've got only a few gallons through it).

Well, onto the Amsoil tomorrow! (Then, I guess I can expect "stupid" power).

Tim

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Hobbico R&D

(in reply to Bob Pastorello)

Post #: 2080

RE: DL-50 engine - 7/6/2008 5:35:46 AM

OkieTrucker

Posts: 131
Joined: 8/11/2007
From: Pocola, OK, USA
Status: offline

Anybody got a muffler for sale? Mine fell off in flight today, cant find it. Email me if you do please.

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Post #: 2081

RE: DL-50 engine - 7/7/2008 2:28:47 PM

wavy777

Posts: 275
Joined: 11/1/2004
From: Oxfordshire, UNITED KINGDOM
Status: offline

quote:

ORIGINAL: vertical grimmace

I am getting ready to get one of these engines for my Ultimate bipe. Any tips for the first time user? I am planning on getting a pitts muffler. Anything you guys could offer would be great.

I have 3 DL's now and i would recommend you dont touch anything mixture wise as it should be fairly close settings wise from the factory. All mine have had a sightly rich low end that you lean out as the motor gets run in.

All my engines 3 DA's and 3 DL's are not run in. Put one tank through it on the ground to ensure a reliable idle, then go fly.

I also run 50:1 fully synthetic from Day 1. Break in on a 22 x 8 then maybe a 22 x 10. That said all my DL's are on Mejzlik 23 x 8.

To start it, follow Bobs instructions. www.dlusa.net

Cheers

W

(in reply to vertical grimmace)

Post #: 2082

RE: DL-50 engine - 7/7/2008 7:18:35 PM

arobatx

Posts: 1588
Joined: 1/18/2006
From: Kalona, IA, USA
Status: offline

I would hesitate to 'not touch anything mixture wise'...take the time, get to know your engine, get to know how the needles affect its performance....and read your plug as you tune, test fly, and repeat. You'll be doing yourself and the engine a favor

(in reply to wavy777)

Post #: 2083

RE: DL-50 engine - 7/7/2008 7:22:28 PM

Bob Pastorello

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Joined: 2/23/2002
From: El Reno, OK, USA
Status: offline

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Learn from others...you can't live long enough to make all the mistakes yourself....

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Post #: 2084

RE: DL-50 engine - 7/7/2008 7:26:39 PM

gr8taz nitro

Posts: 109
Joined: 6/18/2003
From: Joplin, MO, USA
Status: offline

Ok folks, the saga may be coming to an end. Let me first state for the record, The problem is NOT the engine. I was finally able to recreate the issue with the ignition pulled of and packaged up in a box to ship in to DLUSA. The problem appears to be in the mix in my radio. When I copied my program to another memory and when I copied it to another TX I used the same model 4 setup as my source. I broke down and setup the plane on a different model from scratch just like if I bought the plane used and started reprogramming trims, mixes, etc. No glitch, no frame loss, ran the motor 10 minutes, everything worked great. Put it on the old model with original settings, dropped 143 frames and glitched in under 2 minutes. Still baffled as to why I got a more than 20 flights before this showed up, but it's electronics

.

Thanks again for all the help and suggestions. I won't name any names cause I don't want to leave anyone out, but thanks again guys.

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Post #: 2085

RE: DL-50 engine - 7/7/2008 7:33:08 PM

Bob Pastorello

Posts: 5287
Joined: 2/23/2002
From: El Reno, OK, USA
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If you have mix conditions that are exceeding "known" limits of servos, you could have nailed it. I know full travel ATV on a JR at 150% will "overdrive" Hitec 5955's; you may have a mix that causes the "120%" suggested limit to be over.

Even though this is an engine thread - I'm quite sure many of us JR guys would like to know what your specific situation (mixes) is that produced that kind of a problem.

Please email me, or PM, or start a thread on the Radio forum. This is the kind of detective work that we all benefit from.

_____________________________

Bob Pastorello www.rcaerobats.net
Learn from others...you can't live long enough to make all the mistakes yourself....

(in reply to gr8taz nitro)

Post #: 2086

RE: DL-50 engine - 7/8/2008 12:13:56 AM

skillet92

Posts: 134
Joined: 2/21/2006
From: camden, SC, USA
Status: offline

Bob you stated that some mixes with a JR will over drive Hitec 5955's. I ask because i use a JR 10X

(the best buts that for another time

) and i am putting Hitec 985mg's in my GP 330S. Is this something that i need to be aware of? Will all Hitecs have that issue?

(in reply to Bob Pastorello)

Post #: 2087

RE: DL-50 engine - 7/8/2008 12:32:29 AM

Bob Pastorello

Posts: 5287
Joined: 2/23/2002
From: El Reno, OK, USA
Status: offline

PM me; I don't want to wander off topic too much.

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Bob Pastorello www.rcaerobats.net
Learn from others...you can't live long enough to make all the mistakes yourself....

(in reply to skillet92)

Post #: 2088

RE: DL-50 engine - 7/8/2008 1:59:11 PM

The Big Kahuna

Posts: 74
Joined: 12/10/2002
From: MannumSouth Australia, AUSTRALIA
Status: offline

Hi guys, I'm intending to get one of these DL50 engines but from what I hear there seems to be some dissatisfaction with the stock muffler. Is this true or am I over reacting to a few posts here?

(in reply to Bob Pastorello)