Antique

My Feedback: (4)

To all of you who think there IS a substitute for cubic inches...
DA 50 R..Beautiful engine, new technology, light (3 1/2 lbs)
OLD HEAVY UNDERPOWERED G62...( 4 1/2 lbs)
Top Flite Power Point 22-10 prop..Gasoline, 87 octane, Poulan CHAIN SAW OIL at 32-1..Air temp 80 degrees, altitude 7000..
DA, 6500 rpm..
G 62, 7200 rpm
The DA is new, running a little rich..
The G62 is used...
Not a lot of difference is vibration, they're both singles....
The DA was bolted to a 1/4 inch steel plate, using the supplied standoffs..
The G62 had the usual cup mount...
Both engines were bolted to a Black and Decker Workmate stand...
There is NO subltitute for cubic inches, everything else equal...

popierre

My Feedback: (11)

I just bought a G62, how much is you electronic ignition kit and what does it include.

thanks


popierre

GoeKeli

My Feedback: (18)

RC,
That is pretty neat. Is the G62 on your ignition or mag? The 62 is not much more weight than the G45. You say the DA is new?

Joe

h82crash

Funny, we had this discussion at the field today. I have a new G62 and planned on putting it on a highly modified Lanier Cap that will be about 15.75 lbs with the G62. I was wondering myself if it was worth saving a pound of weight by sacrificing quite a bit of power and 550 smackers. A 14 lb Lanier Cap, Wow. 37 lbs of thrust on a 15.75 lb Cap....Holy ****, Batman!

JohnVH

My Feedback: (38)

a G62 on that <16 lb bird would be fun!!!

Antique

My Feedback: (4)

the DA is brand new, so I didn't want to push it too hard yet..
The G62 has the source coil and rear crank extension removed, and has electronic ignition...
The weight of a battery or muffler was not included in either engine weight..
The 37 lbs thrust from the chart with a 22-10 prop is highly optimistic, actual thrust with a scale is closer to 28.. One of my customers has reported 37 lbs using a 24-8 prop and a scale on the tail wheel..Unfortunately the Sukhoi it was on lost half a wing in flight and got rekitted..
There is no kit, I make a new mount with the system inside..$150.00 plus shipping....

deputydog

My DA-50 is turning a Meizlik 22x10 @7100 with only 3 tanks through the motor. It hovers a 19# plane at just below 1/2 throttle.
There is no sacrifice of power between this and a G-62. The G-62 is rated lower in HP! I'm not knocking this ole workhorse. The Zenoah's are great motors but each one has its own application. I would not hesitate to put the Zenoah in a warbird. I wouldnt even consider buying a DA for a warbird! Also RCIGN has modified the basic G-62. He has added his electronic ignition and also we need to know what type of exhauston each.
I think this is a little one sided arguement at the moment!

P-51B

My Feedback: (5)

I agree! Unfortunately not everything else is equal here. Two different engines with different timing, porting, etc, etc, etc.

Antique

My Feedback: (4)

No arguement, just an observation...No muffler on either engine...The G62 is stock, just electronic ignition..A converted G62 is cheaper and heavier.
I put a GT 80 muffler on the DA and got 6100 rpm....
Timing is 28 BTDC on both...
HP ratings are totally useless..A Nelson .40 is rated at 5 hp or more, but try to put a 22-10 prop on it an see what happens....

deputydog

RCIGN;

Do you normally run the Top Flite PP props on your G-62s? I know motors like different type props and would wonder what the G-62 would do with a Meijlik carbon prop? Also on the DA there was a difference between the standard muffler and a slimline pitts. There was 500rpm less with the pitts muffler.
What is the price of a G-62(new!) and electronic ignition with a good muffler?

Antique

My Feedback: (4)

A new 62 is $500.00 with electronic ignition, mechanical advance, or $540.00 with Syncro Spark..Mechanical advance is slightly heavier, Syncro Spark costs more, very little difference in performance....
Normally run whatever prop is here, just happened to have the Top flite...I will be running PK Plus props in the future because of becoming a dealer....
I found on the G26 that a Slimline Pitts was 300 better than the stock muffler (8500 vs 8200 rpm) but 300 worse (8800 vs 8200 rpm) than a Dale Abell side mount G23 muffler...
I don't sell mufflers, just engines and conversions.....
There's another DA 50 here, will run some different size and brand props..20-10 Mejzlik 3 blade, 22-8 PK, 22-10 Zinger, 24-8 Menz....The 24-8 is probably too big, but since the DA advertises more Hp than the Zenoah, it should turn it better, right ?
I quit believing HP claims many years ago....
I REALLY like the DA, but since I make ignitions a 62 is cheaper for me, and sometimes the weight is necessary, so why not use a bigger engine ?

h82crash

I was being facetious, I was always a bit skeptical of the 37 lb figure. And HP ratings are the first thing to ignore.

CAPtain232

My Feedback: (40)

I will not argue with your original figures that you have posted, but I will state that as the DA breaks in, it willbecome more lively and you will see that the numbers will be MUCH closer (within 200rpm). If indeed this becomes the case, the lighter engine will make a better performing airplane.

AJF--2

My Feedback: (119)

Well I gotta jump in here with my 2 cents. Read all through the giant engine forum and you will here me praising Taurus engines. I own 3 and I think they are super engines. Then I bought a Stinger with a G62 that would shake the earth at idle. I sent it to Ralph and was amazed at the difference when it came back! It was just as smooth as my TS52-- idle was like no G62 I had ever seen before, and the power numbers were just a bit stronger than the 3.2. In fact, when I took it to the field, club members thought I had mounted the Taurus on the Stinger (It was on the shelf at the time) Since then 2 more club members have shipped their G62 to Ralph-- I just got one on a Weeks that will be going to him soon.

MY POINT IS THIS---When Ralph takes off the 1 1/2 lbs of dead weight-- installs his mech ignition---the G62 does in fact become an all-together different engine! Then you figure how much less it costs and it has now become one of my favorites!
Over the years I have owned Zenoah, BME, 3W, Taurus, Qutra, US, and a few more I cannot think of right now. These are remarkable words coming from a person who, 8 months ago was NOT a 62 fan at all.

deputydog

RCIGN1;

There is not a huge price difference! The G-62 is $500-540 and the DA is $549 but you still have to buy a muffler($600 all said and done!). On the DA, the 22x10 is the breakin prop and the 24x8 is the standard prop for it. Both should turn in the 7100 range.
And you are correct in the aspect that lighter is not better at times. I still had to add nose weight with the DA!
Good luck and keep up the good work!

rmh

The numbers all sound good - -Just for those who may care - the ZDZ60 is a bit lighter than the G62- and on NON tuned JMB quiet muffler -not an in cowl -cause I can't take the noise - I get 6200 on MenzS 24x10 and 65oo on Mejzlic 24x10 -
Not earth shaking - but inasmuch as it is the same money as the DA50 and the G62 - I think it is a fair comparison.
on 22x12 MenzS props -I tried once -it ran easily in the 7000 range but the thrust in the air was un spectacular.
Ihave not tried static thrust tests -published thrust figures are frankly flights of fancy - those thrust charts are like height/weight charts - if they were on a double layer soft paper they would be of more use ---

h82crash

I'd like to have a DA 50 for my new Cap but it is outside my budget right now. Got a new-never-seen-fuel G62 for building another member's plane and I'll have to make the best of it.

rmh

The good news for you is that the H9 Cap 80" model will balance nicely with your G62-
Forget the 3D balance point for smooth flying - if balanced at 25% of MAC the model is very docile and nice to fly -

rmh

Lanier Cap - ! This will need forward ballast -even with the G62- put all servos up front -
it is a nice model but watch the weight -and the tail IS where the weight is located!!!!

h82crash

Tks, Dick. I have been spending a lot of time removing wood from strategic areas on my kit and it's looking like I'll need the servos in the tail to balance with the G62. It's not as gossomer as the Dave Patrick planes but depending on how much Monocote weighs, I'll be under 16 lbs. close to 15 if I replace the 1 lb Al gear with 7 oz CF.

rmh

sounds like you have it all in control!
balanced -the Lanier flies well.

h82crash

Today, saw a giant scale T-6 with a G62. What a powerful engine! It hauled the 35 lb monster around with no problem. This plane has 4 lbs of lead on the firewall. What I wanted to see the most was the idle and transition since many say it sucks on the stock magneto as this one is.
Once warmed up, 15-20 sec, it had a nice, slow, smooth, idle. Transition was as smooth and rapid as any I've seen. And then I was amazed by the full throttle power. Now I'm worried it will tear the wings off my Lanier Cap. Maybe I will try the OS 160 on it. (12.6 lbs w/OS)

Spychalla Aircraft

My Feedback: (34)

Hard to beat a G62 as the workhorse engine. If you know your hobby shop well you can get them in the $475 range. Having dealt with many of them I find they all run the same. They all run well right out of the box. For comparison I ran a ZDZ 40 on my Spitfire for 64 flights this summer. Compared to the G62 it is not as powerful. The G62 spins a MENZ 22-10 at 7,100. The ZDZ 40 spins a smaller MENZ 20-10 at 7,000. Now I realize this is not a ZDZ 50, but it is my only point of comparison. I think that if you can cowl in the G62, then that is what you go with.

Paul Cataldo

My Feedback: (10)

My DA50 just keeps getting stronger as it breaks in. It's got less than 3 gals through it, and it just keeps taching higher as time passes. With a tuned pipe, I'd take it over a G62 any day. Not to mention how much more quality and worksmanship you get with a DA....

Antique

My Feedback: (4)

I LIKE the DA50, but how do you measure quality and workmanship ? I have a passing knowledge of quality, having been the Quality Control supervisor of a large aerospace machine shop for a few years..Sure, the DA 50 is prettier, but if they would slow down the CNC mill and make a few more passes the finish would be much better..Would that make it even better? Ever measure the crank and piston to see what kind of tolerances they have compared to a DA 50 ? I have..All G62 cranks are ground to within .0002 of each other...Two TEN thousandths of an inch..The width of the front and back webs are all the same within .0005..Can't measure that on a DA50, there is only one counterweight..Quality is holding multiple parts to extremely close tolerances and using good materials, something no company is better at than Zenoah (and Desert Aircraft)..Outside appearance does not make quality, look at the old A&M engines..They had nice shiny cases and machined cranks..Unfortunately the material was not that good and the bearings were wrong...Where are they now ? Zenoah uses very good pressure castings that need no outside machining..
A G26 picks up over 1000 rpm with a tuned pipe, maybe the G62 would also....[8D]