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3W vs. DA

Old 11-11-2004, 06:12 PM
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ben beyer
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Default 3W vs. DA

I'm considering a 3W 50 and i'm wondering how it compares performance wise to the DA 50.
Old 11-11-2004, 06:35 PM
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flyinrazrback
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Default RE: 3W vs. DA

The da seems to be the most powerfull 50 available. The only drawback to the 3W is its heavier than the DA.
Old 11-11-2004, 07:33 PM
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CDignition
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Default RE: 3W vs. DA

I have heard of lots of problems with 3W...Poruous castings, low quality, etc...This is from a rock solid source, who I will keep to myself...DA is the only way to go....
Old 11-11-2004, 07:45 PM
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Imac Kiwi
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Default RE: 3W vs. DA

Every one I know with a DA 50 is very happy with this engine.
Old 11-11-2004, 09:48 PM
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rony
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Default RE: 3W vs. DA

DA-50 !!

I JUST SOLD 2 OF MY OLD 3W-50I
WE DON'T LIKE THE WEIGHT, POWER, AND DIFFICULT STARTING.
Old 11-12-2004, 01:14 AM
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JohnVH
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Default RE: 3W vs. DA

DA
Old 11-12-2004, 10:17 PM
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MikeEast
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Default RE: 3W vs. DA

Wait a minute. The 3Ws are NOT poor quality as a rule, perhaps you are strictly speaking of 3W 50CC engines. . 3W's are a very reliable engine with EXCELLENT running qualities. Very smooth transition and plenty of power. I have a 3W75 that probably has 400 flights on it and it has been in for a tuneup (post crash) but it starts and runs PERFECT as it has since the original owner bought it. And 3W service is as good as you can ask for. As far as the best 50CC engine I havent owned either in a 50CC just wanted to interject that the statement questioning the quality of 3W engines is inaccurate..

Mike
Old 11-12-2004, 11:16 PM
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DaddySam
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Default RE: 3W vs. DA

I emailed Aircraft International and Gerhard said that the porosity issue has not surfaced in the single cylinder engines, only very breifly with a few of the two cylinder engines.
I have heard nothing but praise for the DA and the 3w. The only negative about the 3w I've heard is that they weigh a few more ounces than the DA, which is not a negative since I'm putting 3w-50i's into a 1/5 Spit and a 1/5 Hurricane.
Sam
Old 11-13-2004, 01:15 AM
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0tter
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Default RE: 3W vs. DA

Learn from 1st hand experience [expensive[:'(]] or learn from others.....
Old 11-13-2004, 07:25 AM
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Diablo-RCU
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Default RE: 3W vs. DA

To be fair, some of the DA-50 motors have been reported to have crankshaft and conrod problems. Someone on RCU posted that his motor hand grenaded 3 times because of these problems. They fixed the motor in a timely fashion.
Old 11-13-2004, 10:18 AM
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JBrannon
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Default RE: 3W vs. DA

ORIGINAL: CDignition

I have heard of lots of problems with 3W...Poruous castings, low quality, etc...This is from a rock solid source, who I will keep to myself...DA is the only way to go....
When ever someone starts by saying " I Have heard" or " I knew a guy that knew a guy", you need to look to people with real experience.

Joe
Old 11-13-2004, 10:29 AM
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famousdave
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Default RE: 3W vs. DA

I have first hand experience of one DA 50 crankshaft failure, one front bearing failure and numerous failed ingnitions. NO engine is problem free. Unless you have "SEEN" the failures - "I heard about it" simply doesn't cut it.

That said I fly 3W, but the DA-50 is by far the lightest and most power for the money. I just ordered a DA-50 for my new Velox last week.

The only engine I think that will come close to the DA's power and weight is the MVVS 58, but it's too friggin expensive.

For 50cc - DA and 3W are about as good as it gets, DA wins my vote as it is over 1 pound lighter... on a 15 pound plane that is huge!

DP
Old 11-13-2004, 10:51 AM
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rmh
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Default RE: 3W vs. DA

The DA is a nice motor but not much different in weight than the ZDZ50.
My 50 -which I have been futzing with on various props/ pipes/ mufflers etc., runs pretty darn well
on Mejzlic 22x8 - almost 7800 on a test pipe (not a KS)
on just a muffler - a Mejzlic 22x10 is in the 7100 plus range. almost 7500 on the pipe .
from what I have seen - the DA50 is about same power as the ZDZ- swapping around the exhaust systems makes the big differences .
The only problem we ever saw with the 3W50 was that it outweighed the ZDZ60
It ran really well.
Almost exclusively -the problems I see with any of these -is operator caused .
Some exceptions-- sure .
Old 11-13-2004, 06:00 PM
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CDignition
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Default RE: 3W vs. DA

My source is a Giant RC supplier, that has been in the business (and still is) of selling Giant scale stuff...he has sold more of this stuff than anyone of us will ever use...The source is solid...


ORIGINAL: JBrannon

ORIGINAL: CDignition

I have heard of lots of problems with 3W...Poruous castings, low quality, etc...This is from a rock solid source, who I will keep to myself...DA is the only way to go....
When ever someone starts by saying " I Have heard" or " I knew a guy that knew a guy", you need to look to people with real experience.

Joe
Old 11-13-2004, 06:39 PM
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mglavin
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Default RE: 3W vs. DA

ORIGINAL: ben beyer

I'm considering a 3W 50 and i'm wondering how it compares performance wise to the DA 50.
The performance is equal. The 3W is little heavier due to the crankshaft design/assembly. The 3W is smoother IMO. But either is an excellent choice. The basic design of each engine is similar less the rotating assembly.

Those that suggest either one is better than other are brand loyal if nothing else and likely do not have experience with both engines. There will always be those that have had issue with a product and choose to jump ship, its human nature.

To suggest that 3W's are of poor quality is an erroneous statement at best. This company has the largest cross section of engines available and produces more gas powered model engines than any other manufacturer to date and has been doing so longer than any other I believe. Like all things manufactured there are occasional hiccups in component production runs which may result in sub-standard components, it happens to all of them.
Old 11-13-2004, 07:34 PM
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rmh
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Default RE: 3W vs. DA

- the 3W 50 is about a pound heavier than the ZDZ50 or DA50
The carb mount when at the rear, makes for nice slim mounting on all of em
Other than that extra weight - performance is all pretty close -
as I noted previously -- the exhaust systems make the real differences.
Old 11-13-2004, 08:41 PM
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Default RE: 3W vs. DA

I would say the DA on the KS 1060 is the beast of the bunch
Old 11-13-2004, 09:32 PM
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rmh
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Default RE: 3W vs. DA

why?
Old 11-13-2004, 09:37 PM
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Default RE: 3W vs. DA

have you seen that combo, its pretty bad. I know you have good luck with the zdzs, and not going to knock that. Plus you have to mention the customer service that goes on over at DA, cant be beat. I think 3W needs to make a lighter 50, perhaps a 53, half of the 106 which is a beast. I wont even mention the hopes of the bme 55
Old 11-14-2004, 09:11 AM
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rmh
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Default RE: 3W vs. DA

it is a good combo-
I run almost 7500 rpm -here at 4250 ft elevation -on the Mejzlic 22x10 - on a Czech made pipe.
No engine problems with this setup. except it uses a lot of fuel--
Old 11-14-2004, 10:05 AM
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epc
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Default RE: 3W vs. DA

Both are excellent engines , I have both brands and had ZDZ in the past and they are excellent also.

CDignition:

I'm pretty sure I know who's your source (You're from Sarasota) , He's a very experienced guy in GS he preffers DA over 3w but that doesn't mean that 3w it's not a good engine as I said I own both and they're very good engines.

Buy the one you like the most.

epc.
Old 11-14-2004, 07:24 PM
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fancman
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Default RE: 3W vs. DA

Cdignition,

It's a shame people like you come here and bad mouth others, claiming you got the word from the mouth of God or something. It isn't fair and not very ethical either. You buy what you want but please don't put down anyone because of some secret source you claim to have. It's hard enough for new people to sort through all the BS as it is. I've personally owned two 3W engines and neither gave me any problems at all and both were awsome engines.
Old 11-14-2004, 08:33 PM
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CDignition
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Default RE: 3W vs. DA

the Source is Gene at TroyBuilt models...Go ahead, call him and ask him what works the best...The chevy vs Ford debate will always rage on, but 3W motors are junk...and the QueQue 150 is the worst one...He probably gets a new one once a week,lol
Old 11-14-2004, 10:00 PM
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epc
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Default RE: 3W vs. DA

I don't think it's fair to bash a brand like that they're not junk as you said , and yes I'm talking from experience not because somebody told me or I heard!!!.

epc.
Old 11-14-2004, 10:09 PM
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Default RE: 3W vs. DA

I have had several 3ws, never a problem out of any of them. Remember most professional rc pilots fly what is GIVEN to them or which manufacturer gives them the best sponsorship deals (I am sure if QQ was dropped by 3W he would quickly fly and preach DA if thats what was given to him). I have never seen a 3W 50 run so I can only say I dislike it because its quite a bit heavier than the da or zdz, and in the 50cc class size airplanes, weight is everything. I just wish the bme 55 was in the mix.....if it existed.

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