Author Topic: Norvel 061 or norvel 074 (Read 7048 times)

Richard Logston · « **on:** January 06, 2016, 02:43:51 PM »

Which engine would be the best for my Baby Miss Behave posted here and in the old time section. I am ready to cover and finish so I was thinking maybe the Big Mig 074 is too much for this 90 sq. inch airplane. Not experienced with these small engines in C/L. These are the RC versions so I planned on fixing the throttle in high position. I have lines of 42FTx 08 dia. 50 ft.x 12 dia and 58ft x 12 dia. available for larger airplanes. This airplane was originally powered by the early O&R 19and 23 engines on ignition. Richard

Bill Little · « **Reply #1 on:** January 06, 2016, 03:42:40 PM »

Hi Richard,

To be honest, I am not sure that even the .074 will be enough. Even though the wing area is only 90 sq.in., the building techniques and structure are not of "1/2A" origin. Bigger and heavier components! Just because it IS only 90 squares, I would have to go with at least a modern .10 and probably a modern .15 like a FP or LA. The prop used will allow you to achieve a decent flying speed. And the structure will easily stand a modern .15.

BIG Bear
RNMM/AMM

Richard Logston · « **Reply #2 on:** January 06, 2016, 06:34:51 PM »

Wow, I was concerned the .074 would be too much. Shows how out of touch I am with 1/2A U/C flying. ( I guess the .074 size is considered class A) If I were to go with the 074 what line length and dia. would be best? I do have a Fox 15 I could use. Richard

Larry Renger · « **Reply #3 on:** January 06, 2016, 09:05:42 PM »

With tank, but no engine, what do you expect the weight to be? Also, what kind of performance are you trying to achieve? It ain't a gonna ever win the Walker Cup!

Jim Roselle · « **Reply #4 on:** January 06, 2016, 10:22:35 PM »

I would think the .074 would be more than adequate. Don't underestimate what a TeeDee .049 is capable of either.

Jim

Richard Logston · « **Reply #5 on:** January 07, 2016, 11:42:14 AM »

Walker Cup, LOL! Al I'm trying to do is just fly it around and around and around, stop! getting dizzy just talking about it. Seriously I'm just trying to see what it was like to fly as a 12 year old back when the Baby Miss Behave was a Christmas present that never saw the sky.

Dane Martin · « **Reply #6 on:** January 07, 2016, 01:17:02 PM »

I don't know anything about the baby "miss behave", however as a general reference I'm currently building some "ringmaster 207" 1/2A planes. It's 207 square inches and uses a .049 - .061 engine. It's a modern plane designed by Pat Johnston. It's a very competitive plane powered with a TeeDee.

So i would think your .074 would be a bit much. Hope this helps with a reference

Richard Logston · « **Reply #7 on:** January 07, 2016, 01:32:38 PM »

OK, I have some weights to ponder. The airplane less finish, engine, lead outs and fuel tank is 3.95 oz. the .074 big Mig Norvel is 2.95 oz without prop. I plan on a modest finish either using silkspan or polyspan with a dope finish. Min. of 2 coats nitrate on bare wood, 1-2 coats dope and talc filler, covering with 3 coats nitrate with min of 2-3 coats BR color dope. I think I will go with the Norvel 074 to start with, I can always up the power to a Fox 15 if needed. Richard.

Dane Martin · « **Reply #8 on:** January 07, 2016, 01:52:00 PM »

Sounds like after your finish you'll be in the 5 to maybe 6 oz in the plane with no engine installed. The planes I'm building now will be 10-13 oz all up weight. The baby miss behave looks to be a sport or stunt plane. I would think the 074 would be more than sufficient.

Roger Vizioli · « **Reply #9 on:** January 07, 2016, 02:26:14 PM »

Quote from: Dane Martin on January 07, 2016, 01:17:02 PM

I don't know anything about the baby "miss behave", however as a general reference I'm currently building some "ringmaster 207" 1/2A planes. It's 207 square inches and uses a .049 - .061 engine. It's a modern plane designed by Pat Johnston. It's a very competitive plane powered with a TeeDee.

So i would think your .074 would be a bit much. Hope this helps with a reference

Dane,
I have a RM 207 w/ Norvel .061, it hauls on 48' x .008 lines!! weight = 7.5 oz. w/o fuel, when time permits I'll put a Norvel .049 on it for comparison.
Still have not used the LAS46.
Roger V.

Dane Martin · « **Reply #10 on:** January 07, 2016, 03:55:24 PM »

That's awesome Roger! I got an Asp 061 i will try in one.
I got a new os40la i need to build a biplane around one day too.... Lol

George · « **Reply #11 on:** January 07, 2016, 11:46:53 PM »

Quote from: Richard Logston on January 06, 2016, 02:43:51 PM

Which engine would be the best for my Baby Miss Behave posted here and in the old time section. I am ready to cover and finish so I was thinking maybe the Big Mig 074 is too much for this 90 sq. inch airplane. Not experienced with these small engines in C/L. These are the RC versions so I planned on fixing the throttle in high position. I have lines of 42FTx 08 dia. 50 ft.x 12 dia and 58ft x 12 dia. available for larger airplanes. This airplane was originally powered by the early O&R 19and 23 engines on ignition. Richard

Richard, in my opinion the question should be what SHOULD pull it around, not what will pull it.

That 1947 structure was not made for stunt. Most barely went round and round. I would suggest the Fox because it will pull a bigger prop slower. Be careful though, Foxes don't like a very large prop. I would suggest an 8x4.

NORVEL engines are excellent, but you must spin them up to get on their power curve. That type plane looks mismatched with a fast engine.

Were I going to build one I would probably power it with an .09 diesel.

George

Richard Logston · « **Reply #12 on:** January 08, 2016, 09:46:50 AM »

George, I know and agree with your statement regarding the 074 vs Fox 15. I already drilled the mount for the 074, so will try that first then if need be will adapt the Fox 15. I have a set of 50 ft lines from the sixties but thinking with the 074 they might be to big in dia. I guess they are 012 std lines. I have a set of 42ft 08 lines but might be too short to be comfortable. I have no experience flying U/C with small engines. Flew mostly 19-35 engines in the sixties until the RC bug bit me. Then took time away from model airplanes to build a Homebuilt Starduster One. No longer fly full scale, so back to models. Richard

Phil Krankowski · « **Reply #13 on:** January 08, 2016, 10:36:14 AM »

90 square inches under 5 ounces finished without engine? I would consider a hot Cox reed .049 or a TD.

A Cox reedy will pull a 6 ounce slab around with authority. Something actually streamlined and shaped would be no problem.

Now with the bigger engine you could run longer lines which may be helpful since 35ft lines are not exactly site friendly at most places, simply because the circles are built bigger and the grass in the middle tends to be longish.

Phil

RknRusty · « **Reply #14 on:** February 08, 2016, 10:10:53 PM »

I agree with Phil if those weights are right. My 8 oz Baby Streak is a rocket with a good running TD .049 and a 5.25x3 prop, maybe too fast for a less than fine tuned 1/2A pilot. I fly on 40' and 45' lines depending on the wind.
Rusty

Paul Smith · « **Reply #15 on:** February 09, 2016, 07:35:39 AM »

1/2A is really the .049 class.
Sometimes 1/2A is stretched to .061.
I have never seen 1/2A stretched to .074, but anything is possible.

I fly a Flying Clown (15 to 29 size) with 200 square inches with a TeeDee .049.

Larry Renger · « **Reply #16 on:** February 09, 2016, 11:03:05 PM »

Very nice tapered leading and trailing edges. Do I see thin ribs with capstrips? Tell us more!

What does it weigh?

Roger Vizioli · « **Reply #17 on:** February 10, 2016, 10:02:59 PM »

Is this the Flying Clown I saw at Brodaks years ago?
If so, it is impressive, flies GREAT!

Roger V.

Author Topic: Norvel 061 or norvel 074 (Read 7048 times)

Richard Logston

Norvel 061 or norvel 074

Bill Little

Re: Norvel 061 or norvel 074

Richard Logston

Re: Norvel 061 or norvel 074

Larry Renger

Re: Norvel 061 or norvel 074

Jim Roselle

Re: Norvel 061 or norvel 074

Richard Logston

Re: Norvel 061 or norvel 074

Dane Martin

Re: Norvel 061 or norvel 074

Richard Logston

Re: Norvel 061 or norvel 074

Dane Martin

Re: Norvel 061 or norvel 074

Roger Vizioli

Re: Norvel 061 or norvel 074

Dane Martin

Re: Norvel 061 or norvel 074

George

Re: Norvel 061 or norvel 074

Richard Logston

Re: Norvel 061 or norvel 074

Phil Krankowski

Re: Norvel 061 or norvel 074

RknRusty

Re: Norvel 061 or norvel 074

Paul Smith

Re: Norvel 061 or norvel 074

Larry Renger

Re: Norvel 061 or norvel 074

Roger Vizioli

Re: Norvel 061 or norvel 074