RE: DL-50 engine

RE: DL-50 engine
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> RE: DL-50 engine

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RE: DL-50 engine - 11/7/2007 11:31:09 AM

Bob Pastorello

Posts: 5286
Joined: 2/23/2002
From: El Reno, OK, USA
Status: offline

quote:

ORIGINAL: drewbags

Yarom

I agree we should not bash the DA, it is by all accounts a great engine and I don't think you can fault their after sales service, which at the price of the engine should be expected and I would encourage all of us to be circumspect when comparing the 2, we don't want another thread locked!!

However, I have been shot down on several UK boards by die-hard DA supporters when I have mentioned how well my DL runs, I didn't mean to put down the DA but that is how it is interpreted! The bottom line is that the DL is a great engine at a great price and you can't fault people for being over enthusiastic about it.

By the way I get 7300rpm on a 3W 23x8 on a KS cannister, not a pipe, which is pretty good in my book.

We should never need to make a comparative statement between brands. Others who want to experiment will do so to learn for themselves. "Believers" in one brand over another will discredit contrary information, anyway. Even to the point of posting replies TO someone calling them a liar when they post THEIR results with a certain engine. Of course, it doesn't make a whipstitch difference that the critics do not have any first hand experience, either. Add to that the "standard" forum-doubt on stated rpm readings and comparing becomes an exercise in futility.

It is just ridiculous to see the brand debates rage when they are so pointless.

Your 3W rpm figures sound right based on the DL 50's I have. Canister systems can help things a lot, also.

The DL uses a different carb than other 50cc engines; maybe there are some differences to attribute to that.

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(in reply to drewbags)

Post #: 251

RE: DL-50 engine - 11/7/2007 12:07:23 PM

paul5992

Posts: 348
Joined: 9/28/2006
From: Red Wing, MN, USA
Status: offline

This forum is for help and talking untill someone comes in and starts calling the dl a clone or a cheap copy. I've heared about the cast block a 100 times the motor runs and fly my plane perfect. So please leave the da talk for some were else.

(in reply to rcairmike)

Post #: 252

RE: DL-50 engine - 11/7/2007 12:09:48 PM

Bob Pastorello

Posts: 5286
Joined: 2/23/2002
From: El Reno, OK, USA
Status: offline

paul5992 - regard JXF props.... I have had some, and they work well, but there are variations in firmness and rigidity from prop to prop. Try the "untwist" test. Grab a NX or 3W or Menz....try to untwist the blade and watch. Then do the same with the Xoar or JXF. In my experience the JXF untwists more easily than others. The very WORST out there for this un-twisting are the Master Airscrews, Zingers, and absolute BOTTOM of the bucket, the Top Flites.

Please know that I am not "bashing" products as I only share my personal experience and observations on these threads. If I do not "know" how something acts, I'll not comment.

In the case of props, I have done a lot of experimenting.... my DL's really are "happy" (so I'm happy) with the NX and Xoar 22 and 23 x 8's.

If you are concerned about hub compression, and still want to run a soft prop, simply drill four 1/8" holes through the hub like mounting holes. Get 1/8" hardwood dowel. You will have to tap the 1/8" dowel into the snug fit holes drilled, then simply put a drop of CA glue on front and back. The dowels will absolutely stop compression.

This is the same fix (only done with 3/32" dowels, or hardwood toothpicks) to firm up the cheap-ARF firewall engine mounting holes so they don't compress under standoff tightening. Works like a charm.

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

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Post #: 253

RE: DL-50 engine - 11/7/2007 12:10:22 PM

cubmaster126

Posts: 142
Joined: 8/1/2006
From: havana, IL, USA
Status: online

Hey all. I'm purchasing the Gene Saucy extra 3oo from GP in Feb w/2.4 radio system. Is this engine to much for this plane?Read the Thor 45 thread and that motor sounds a little scary. I really want to go gas this next year but i'm a flyer who has to watch EVERY penny and so far this sounds to be the motor for entry but wanted to make sure it will fit the plane. later thanks guys

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Post #: 254

RE: DL-50 engine - 11/7/2007 12:12:52 PM

Bob Pastorello

Posts: 5286
Joined: 2/23/2002
From: El Reno, OK, USA
Status: offline

quote:

ORIGINAL: cubmaster126

Hey all. I'm purchasing the Gene Saucy extra 3oo from GP in Feb w/2.4 radio system. Is this engine to much for this plane?Read the Thor 45 thread and that motor sounds a little scary. I really want to go gas this next year but i'm a flyer who has to watch EVERY penny and so far this sounds to be the motor for entry but wanted to make sure it will fit the plane. later thanks guys

WAY too much engine. Local guy has one of those with a gas FORTY cc, and it is ridiculously-overpowered.

Sorta like my Obsession with a DL 50.

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

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Post #: 255

RE: DL-50 engine - 11/7/2007 1:08:15 PM

rcairmike

Posts: 108
Joined: 4/7/2002
From: cary, IL, USA
Status: offline

aero bob,from what i am reading there is a couple versions of the dl 50.can you tell me what version you have .im just trying to find out if there is a carb diffrence between productions of this engine.thanx much

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Post #: 256

RE: DL-50 engine - 11/7/2007 1:56:19 PM

Bob Pastorello

Posts: 5286
Joined: 2/23/2002
From: El Reno, OK, USA
Status: offline

Me, too. I've written Bob Kramer at DL USA about this. I have had three of these, now own two, and they work very well; no carburetor issues at all. The "newest" version, that I'm aware of, is the standoffs and thicker mounting lugs version, with some minor hub improvements. Performance is identical to earlier ones that I had.

The newest engine (one week old) has the WT - 664A carb on it.

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

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Post #: 257

RE: DL-50 engine - 11/7/2007 2:47:57 PM

Ed Vollmer

Posts: 83
Joined: 1/12/2002
From: St. Joseph, MO, USA
Status: offline

What's up with all these different carb numbers? I have installed 6 of these engines on customers planes and the latest carb number is WT 734 (arrived last week). I did not note the numbers on all the other carbs but all appeared to be the same carb for installation purposes. Early on I made a template for drilling the holes and all seemed to work fine.

BTW, everyone is very happy with the engines.

(in reply to Bob Pastorello)

Post #: 258

RE: DL-50 engine - 11/7/2007 6:26:02 PM

coronabob

Posts: 243
Joined: 2/12/2004
From: Friendswood, TX, USA
Status: offline

Aerobob,

So glad to have you back in the thread. You mentioned drilling holes to put in hard dowels, are these in addition to the mounting holes? Great idea! I had a Xoar prop on a YS110 that got compressed so badly. Your trick will work there too.

(in reply to Ed Vollmer)

Post #: 259

RE: DL-50 engine - 11/7/2007 6:55:03 PM

Bob Pastorello

Posts: 5286
Joined: 2/23/2002
From: El Reno, OK, USA
Status: offline

quote:

ORIGINAL: coronabob

Aerobob,

So glad to have you back in the thread. You mentioned drilling holes to put in hard dowels, are these in addition to the mounting holes? Great idea! I had a Xoar prop on a YS110 that got compressed so badly. Your trick will work there too.

Yep. Works just fine, done it several times on softer hubs. "Trick" is to be very careful and NOT overdrill the holes for the dowels, so they have to be "driven" in and are snug. That makes sure the CA will wick on the whole circumference of the dowel, and probably actually adds some strength.

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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 coronabob)

Post #: 260

RE: DL-50 engine - 11/7/2007 7:52:32 PM

arobatx

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

I've done the same thing with small diameter carbon rod. I didn't do this on purpose as opposed to wood dowels or toothpicks, it was just all I had around at the time. Works like a charm!

Chad

(in reply to Bob Pastorello)

Post #: 261

RE: DL-50 engine - 11/8/2007 2:57:55 AM

XJet

Posts: 3448
Joined: 3/31/2003
From: Tokoroa, NEW ZEALAND
Status: offline

But surely the prob hub will still compress until almost all the load is taken by the dowels or carbon -- effectively meaning that you're no longer spreading the load over a wide area but concentrating it on a small one.

I'd be concerned that this might then cause premature structural failure of the prop due to splitting, as the torque is now being transmitted through those dowels and not by the hub and washer themselves.

How hard can it be to simply re-torque the prop bolts at regular intervals anyway?

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Post #: 262

RE: DL-50 engine - 11/8/2007 3:59:22 AM