mpascual

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Hi all:
I'm finishing a Ziroli's Stuka fiberglass coated.
Maybe a DA 50 or DL 50 can fit and pull of this airframe ?
What engine must i mount ?

Thanks in advance

Spychalla Aircraft

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Those engines would pull the airframe but they would provide moderate performance. I run quite a few DA-50's on several warbirds. The engine is most comfortable with a 20 X 10 prop. I also run the Zenoah G-62. By comparison the G-62 is just a bit stronger and will turn a 22 X 10 prop. Most people fly the Stuka on a G-62 and the combination is wonderful. It cowls in well with a 3/8" spacer behind the spinner backplate. I would recommend the G-62 for just a little more power. Leo Spychalla

mpascual

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Many thanks.
Are you sure the DA 50 cannot turn a 22x10 prop stronger than a G62 ?

Happy new year for all .....

Spychalla Aircraft

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Absolutely sure. I have 4 of the DA-50's. They all run about the same. Each will turn a 21-10 Bolly at between 6,600 to 6,900 RPM. They just cannot handle a 22-10 with authority. I only have one G-62 at the moment, but I have had another 5 or 6 over the past 15 years. The one I have now will turn a Bolly 22-10 at 6,600.

The Zenoah G-62 is a very good engine and very difficult to beat for the price. Every one of them is exactly the same right out of the box. They are difficult to impossible to overheat with all those small fins on the head. If you can cowl one in and hide it then it should always be a first choice. Here are some installation pictures in my Stuka. I made a wood spacer out of plywood to shift the engine back so that the cylinder fins don't stick through the lower intake. Looks like it is 2" diam. and about 3/8" thick. You have to be careful to keep the spacer very flat. Aluminum would have been better but wood was quick. Leo

alanc

thats a 9mm spacer, 3/8ths is .375 nitpicking git, arnt i? having a zenoah 62 up front is also better for the weight, the DAs are good aerobatic motors, but you cannot beat zenoahs for warbirds,

Evil_Merlin

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Remember that Ziroli designed the Stuka for the G62.

Leo thanks for the information about the spacer for the spinner. My Stuka build is coming soon.

hellcat56

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Spychalla Aircraft
what type of muffler system did you run on your g 62 stuka
any photos of it???
your a wealth of information
thanks
Hellcat 56

Spychalla Aircraft

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The muffler is a Slimline 2100 Pitts Style muffler for the G62. Find them at: http://www.slimlineproducts.com/onli...iant_scale.htm $99.99 each. Make sure you get the one without the smoke tap if you can because it protrudes even more out the Port side than the one I have because of the smoke fitting. You can see from the photo that the non-smoke version sticks out of the cowl just a little bit on port side. I use the Slimline on this application because it is fairly narrow. Leo

alanc

would it be possible to tilt the motor a tad? and get the silencer fully cowled? and maybe fit a carb bend, and get the carb inside too?

Ed

Use the DA-50 with a Pitts style muffler, and it will fit beautifully, and be fully cowled. Keep the Stuka at 26 lbs or under, and it will fly as beautifully, as mine does.

I have both the G-62 and DA-50, and if you use the DA-50 in the Stuka, it will run a hell of a lot smooother.

Ed

Greg Wright

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Hi mpascual. i'm not trying to say that Spychalla Aircraft is wrong but i've been running two DA 50's in my p-38 for just 10 flights now and all i can say is that they are turning 20x10 three blade mejlik props at about 6500 RPM's and they are not even broke in yet so it's your choice on the engine that you use.Maybe the reason they are running so well is because i made my own custom none restricting mufflers. I also have a yellow p-47 with a DA50 weighing in at 24 pounds running a 22x10 two blade prop at around 6200 rpms. It flys at half throttle with athuority.

mpascual

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Thanks for your reply.
Finally i've installed a CRRCpro 50cc GPR (same pattern as DA50R) . with a pitts style muffler , and without cutting the cowl.
Great airplane-engine result.


Regrads

Ed

That's great ! How about sending a Pic ?

G-Pete

Zehoah or not Zenoah -for me is also a point of aesthetic. With a Zenoah, you have to butcher your cowl for the exhaust and carburetor. This takes away from the nice stream line of the Stuka. My choice would fall on a more modern engine with rear reed valve introduction.

mpascual

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OK, but airplane is not yet finished nor painted ....

mpascual

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Yes , i remember and i can see the ZG62 engine on the planes.
But you can see the Nick's offer for this airplane and there are TWO engines listed on Ziroli's webpage:
One of them is the DA50R .
I don't remember the other ......
Regards

Ed

Congratulations mpascual ! That is a very handsome airplane. It is good to see such a clean looking Stuka without a butchered cowl. With todays modern engines, there is no need for that.

> Ed

Oh, and you are right. On Nick Ziroli's website, he does offer the DA-50 to be used with his 100" Stuka. And I am inclined to beleive that Mr. Ziroli, probably knows a hell of a lot more than most of the people who come to these forums.

larry@coyotenet

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Please! Don't underestimate the G-62 for your Stuka. Sure it will stick out a little but if yours comes in weighing over 22 lbs you will sure like the xtra power the G-62 gives when the time comes to fly. DA50's are nice engines and they work good in light airplanes and IMAC stuff but the G-62 has the grunt to fly big overweight warbirds like no other engine. Having such warbirds with the G-62 and flying with planes with the DA50 it is my opinion that if proped right the G-62 will smoke a DA50 in a similar weight warbird. My analogy is the DA50 is a race horse and the G-62 is a plow horse. Which do you want pulling your plow? My P-47 with the G-62 stays right up with ZDZ 80 and 3w75 powered planes and will blow a DA50 powered TF Mustang right out of the water. The secret is to let the G-62 rev up. Most people run a 22X8 on the G-62. Try a 20X10 or even a 20X12 and let it wind up in the air. Most impressive! Also consider that you are going to need weight up front anyway so why add lead instead of cubic inches?

Larry

G-Pete

A little ?

I don't want to post that so I don't hurt the feelings of the G62 lovers. But you opened the door. Never ever a G62 smoked my DA50's in any configuration. The G-62 had his time and the time is up. There are better and engines out there and they are price compatible.
Fine for the guys who like the G-62 and swear to it FINE. But pleas don't say it will out perform a DA50 or a ZDZ80 come on. These engines swing propellers the G-62 not even reach 5000 RPM. A good DA50 swings a 22x10 around 7000. We clocked a DA50 with a 22x12 at 114MPH.

I saw Ziroli Stukas side by side with the G-62 and DL-50 and I liked the looks better without the butchered cowl - in the air the G-62 was just louder...that's it.

If you can build that with 22 pounds this airplane flies with a G-38 more realistic is 28 pounds

G-Pete

Yeah, here is your "little" - sorry I don't think its a little...not to forget the back spray and the mess with the fuel.

larry@coyotenet

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There's an old Russian proverb that applys here "Perfect is the enemy of good enough" While it is nice to have an unblemished cowl on your warbird, watching as it overheats and dies on a low pass is a real bummer. Also if you have never seen a G-62 powered warbird blow away a DA-50 powered one come to Warbirds Over The Rockies my friends and I and will be glad to educated you. As I said it's all in the prop and most G-62 users don't prop for speed. G-62's love high rpm. I would estimate that my engine is turning around 8,500 in the air after it unloads. My friends TF 51 B model which he has flown at WOTR runs a menz 20X10 prop and probably is turning around 9,000 in the air after it unloads. Last year he blew away everything except a yellow p-47 running a ZDZ 80 that probably weighed at least 7-8 lbs less and even that was close. None of the DA -50 powered 51's were within 20mph of him. But, alas, the DA vs G-62 saga continues. Here's the 51B and a photo taken at our club warbird event of another friends Stuka with a G-62 on a flyby. This plane is a frequent entry in WBOTR and was by far the best flying Stuka there. Some DA 50 powered Stukas were there last year and he flew rings around them.

Larry

G-Pete

Looks like it Larry,

as for heat - you guys in Colorado don't know what is heat. Heat is 145 F tarmac and 100 F day and 94 F night. You guys know what is snow - we don't. But we know about over heading not in the cowl of the Stuka.

One word to the WBOTR, most guys do not touch the needles when they come up there (mile high), that means they have less performance - but plenty of fun. Sure you beat everything on your home turf.

Step by this year Larry and say hi - alright? Then we can continue this (endless) discussion in a pair of lawn chairs, have a soda and listening to the sound of warbirds.

mpascual

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I'm very happy with my Stuka powered by a 50 engine. That's all what i can say.
Is not a DA but on my test give me same power......
I don't think every plane has ONLY one engine to fit.
Also here in my country, the G62 is very expensive engine.
I remember a guy telling me not to put a Zenoah 26 on a World Models Zero because 'engine does not have enough power to do torque roll' ( that's true) . The Zero is fliyng with a ZG26 engine for two years.

Regards.

vertical grimmace

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I run a DL 50 and I would like to add that a 22-10 prop is what works best. Anything under a 20" and the revs get too high for the timing. Then it just runs weird. Not sure where the 20" only for DA 50's comes from, but in my experience they just need more disc. I am just getting this out so no one wastes any money on the wrong prop for their 50cc engine.

jkeze

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[But pleas don't say it will out perform a DA50 or a ZDZ80 come on. These engines swing propellers the G-62 not even reach 5000 RPM. A good DA50 swings a 22x10 around 7000. We clocked a DA50 with a 22x12 at 114MPH

Hope to burst your bubble but this would require the engine to turn almost 10,000.