RC Pile It

My Feedback: (6)

I would like to do an unbiased comparison between these two engines. I have owned my YD-A 56 for a month or so now, and just recieved my DLE 55 last night. I do not favor one over the other, I have not been approached by either company to do this, nor have I recieved any "special" deals/offers by either, so I will try to be as equal/unbiased as possible. I live at 6000' above sea level, so the performance numbers will be low, but they will be equal tests, to the best of my abilities! If there are any specific areas you would like to see answers to, please feel free to let me know, and I will do my best to answer any/all questions within a day, or so...

Super08

My Feedback: (2)

Pulling up a stool..
..anyone got some popcorn?

RC Pile It

My Feedback: (6)

Here are the spec's from YD-A's website:

Engine Displacement (cc)- 56cc
Bore x Stroke (mm) - 1.73"x1.45" (44mm X 37mm)
Carburetor- Walbro
Ignition- RCEXL System
Power supply- 4.8V
Weight - with ignition & muffler- 63.8 ounces (1809g)
Weight - w/o ignition & muffler- 51.8 ounces (1468g)
Maximum Output- 6.2hp
Speed range- 1200-9500rpm
Gas/Oil Mix- 32:1 -40:1 (87 octane gas)
Propeller- 22*10 24*8 7600 rpm
Full accessory package includes - Free Muffler, standoffs, NGK CM-6 spark plugs, electronic ignition, bolts

The current price for this engine is $399.99 Shipped! The price when I ordered mine was $440.00(shipped), so they are curerently cheaper than the DLE at $410.00(msrp)

RC Pile It

My Feedback: (6)

Here are the spec's from DLE USA's website:
55cc SPECIFICATIONS:

Performance...

Output Power: 5.5HP at 7500rpm

Idle Speed: 1350 rpm

Static Thrust: 31.3lbs at 100 meters altitude

27.6lbs at 1800 meters

Dimensions...

Displacement: 55.6cc

Bore and Stroke: 45mm×35mm

Compression Ratio: 7.6:1

Weight: Engine - 1310g Exhaust - 100g Ignition - 120g

Requirements...

Fuel: 2C Regular Gas mixed 30:1 - 45:1 (petroleum based for break in,

synthetic thereafter)

Propeller: 22×8 to 23×10

Ignition Battery: 4.8 to 6.0 Volts >=1200Mah

Replacement Spark plug: NGK CM6 or equivalent

Gap: 0.018" to 0.020"

Installation torque: 7 to 8 ft-lbs.

Configuration...

2Cycle air cooled

Walbro membrane pump carburetor with manual choke

Automatic advancing electronic ignition

And their price is set at $410.00 (map), but there are some "Deals" to be had, depending on which distributor you use...

RC Pile It

My Feedback: (6)

Both engines come with, what looks to be the same, "Rcxl" ignition systems.

Both engines are supplied with, rear mounted, "walbro"carbs(the YD-A comes with #wt785, and DLE comes with #wt918). The DLE does provide a composite throttle extention arm. I personally like the DLE reed block better due to composite reeds(vs. stainless steel), and DLE's reeds are screwed to the block(vs. pinned and pressed). I also found out that if the YD-A's carb is slightly overtightened, the thin plastic flange will crack(vs. DLE's alum. flange). Right out of the box, the DLE's reeds sealed better than the YD-a's, but after running, they might be equal(I don't know this yet...) Both carb set-ups appear to be able to be rotated(180*), if needed.

The DLE55 has a no-name spark plug, the YD-A has an actual NGK CM-6(nice plugs!)

Both engines arrived with "mufflers" of (close to) eqaul size/volume, but the YD-A has gone the extra mile to polish theirs!

Both engines appear to have cast alum. cylinders with a chrome liner, the DLE has thinner fins compaired to the YD-A's thicker/stouter cooling fins. (Both have the spark plug angled)

The YD-A crankcase appears to be entirely machined, where the DLE has a cast crankcase(all mating surfaces are machined for fitment).

Both engines have the same,prop bolt pattern(4 bolt), and center pin dia., so the same props will work on both.

(I have to get to work now, so I will continue later...)Thanks!

RC Pile It

My Feedback: (6)

Here are a few pictures(in case you don't know what they look like...)

I have fliped the DLE carb, it normally is oriented the other way(linkages are on the other side)

SportFlyer3

Subscribed...

JOHNS3D

My Feedback: (5)

i wondering it the YD has an amazing costumer service and repair like DLE with Jody. BTW the DLE looks really nice compared to the other one...lools ugly.

RC Pile It

My Feedback: (6)

YD-A has the best customer service that I have ever dealt with! Henry at Rc Aero, will jump through hoops to take care of any problems. He uses Bill Jensen, in Conn., as his service center, and Bill will do what ever is necc. also! I have had a couple of problems with the YD-A(which we will address in the future...), and between Henry, and Bill, they have all been imediately taken care of, No questions, No B.S.! You can find a lot of references to "Henry"(Rc Aero, Aerovate, Rcgf)aka "Piston" all over these forums, and (almost)everyone will tell you that Henry is a good guy! In fact, I became a customer of Henry's because he was so willing to help me with an engine, that he used to carry, but no longer does, even though I hadn't bought it from him! This is the main reason for purchasing a YD-A! I have zero experience with DLE customer support, but heard good things(as long as it is purchased through US channels)

JOHNS3D

My Feedback: (5)

sounds good!!! is great to have some "cheap" engines out there that can perform better than the bling bling ones.

Phoenex

My Feedback: (1)

I am thinking just the opposite. The machined crankcase and polished muffler look much better on the YD-A. The thorough coverage of cooling fin arrangement on the head is very impressive on the YD-A.

Tseres

I'm not supposed to eat popcorn.
I'll be checking in regularly but will restrain from comment because I am biased and have never owned a DLE.

RC Pile It

My Feedback: (6)

I appreciate any comments...Biased, or Not!

This is meant to be gathering of opinions/theories/ideas....

The only thing that I ask, is to be somewhat constructive towards one, rather than distructive towards the other...

Tseres

That sounds fair enough.
What you are doing takes guts.
I'm anxious for you to get started.

fw190

My Feedback: (37)

Can you tell me how the screws fit in the tapped holes on both motors? I have a new RCFG motor that the tapped holes all seems to be oversized, screws are wobbling in the holes until it bottoms out or two parts finally compress. Can you tell me if both motors have this condition? IMO, its important to have the right tolerance not just on parts but also on the screws, which plays a big part in keeping the motor together for longevity.

Are you going to run the same muffler and the same prop?

aussiesteve

I am curious about that too.
As a manufacturer, I would like to confirm a couple of things.

1 - Absolutley the ignition is RCExcel. Why reinvent an already good wheel?
2 - The Free mufflers included are only a simple unit. We did consider doing as some other companies do and not providing a muffler at all (Choose from a list as to what you want) but there are many that use these included units as standard. There are many other choices out there - pretty much anything that wil fit a 55 or larger cylinder will work - the mounting dimensions are similar to DA/DL etc but make sure you use a system that is designed for a larger capacity than 50cc. Our experience is that many off the shelf options are suited well to a 50cc cylinder but really restrict pretty much anything over that capacity.


And you never know - there may end up being more to this thread than meets the eye

RC Pile It

My Feedback: (6)

I have done a complete tear-down of the YD-A, and the screw/part fitment is very good! I had a slight issue with the cylinder sealing against my crankcase, due to a small casting blemish on the cylinder casting, but a dab of fuel proof rtv took care of it. I have not taken the DLE apart, yet, but I will(probably tonight, if I remember to bring home my camera)

My plan is to run the same prop(Xoar 22-8, and or 22-10), and as far as the mufflers go, I was going to use the mufflers supplied with each engine(just to be fair to each manufacturer). Depending on how far this goes, I might try each engine with the Slimline Smoke Pitts muffler that I have, just to see how each engine deals with that particular aftermarket muffler. Henry has already indicated that it is a little low on volume(designed for a da50), so I might be loosing a couple of RPM's? Time will tell!

I should have some weights(I have a very acurate automotive paint mixing scale that is accurate to 0.1grams), and measurements, and other dimmentional info tomarrow, and hopefully I will be able to start running these things in the next day, or so...

I plan on running them, both, on Pennzoil at 32:1 with 87 octane(10%ethanol... )

Super08

My Feedback: (2)

In my experiments I have found mufflers play a huge role in the performance of an engine. I have seen some that cut the rpm by 500 and others that I thought looked very restrictive yet flowed very well. In one test I ran the same engine on the same tank of fuel with three mufflers and a Xoar 22x10. One would only manage 6200rpm and it had the largest diameter stack. One of the others turned 6600 and the one that had the smallest chamber turned 6700. (edit) In the pic below it is the three on the right. Ignoring the Bisson on the left the best performers went from left to right. The chrome one was the poor performer and was baffled. The best performer was the one witht he skinny stack, but what you cannot see in the pic is that it is a twin stack design.

soarrich

My Feedback: (98)

This is what we need more of in the forums, head to head test.[sm=thumbup.gif][sm=thumbup.gif]

f4u1940

 Subscribed, Iam in market for new motor, and will find this very interesting....

loadtoad1a7

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RC Pile It

My Feedback: (6)

Thank You Rich, I agree! I got tired of "Wine" talk on another thread, so here we are!

f4u1940

I agree completly;..
Steve

Checklst

So far the info is great to hear......I am looking at my first 50cc and my short list is DLE, YD-A56,and MT-57. All are in the same price range, so service and dealer performance is at the top of my list.

Keep it coming!!!!!!!!![8D]

laudy

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