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  • November 14, 2018, 01:37:24 PM

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Author Topic: .25 or .36 for ARF Nobler  (Read 1923 times)

Offline mike londke

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.25 or .36 for ARF Nobler
« on: April 12, 2018, 04:07:46 PM »
Assembling an ARF Nobler for Sam. Choices are Thunder Tiger .36 or a Royal .25. The Royal is a dual ball bearing ABC schnuerle ported engine weighing 9.2 oz with a Randy needle/venturi.  The TT weighs 10.3. I know the TT.36 has plenty of power, the question is will the Royal .25 do the job and with what prop? I've read that most Nobler ARFs are nose heavy unless you use a Fox .35 so I'd like to save on weight by using the Royal. The up side is the mounting holes are virtually the same so I could swap between engines if needed. Anyone run one of these Royals? Will it produce the power I need? Thx.
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Offline David Ruff

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Re: .25 or .36 for ARF Nobler
« Reply #1 on: April 12, 2018, 05:55:12 PM »
Trick question.
None of the above.
Fox .35 😁
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Online peabody

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Re: .25 or .36 for ARF Nobler
« Reply #2 on: April 12, 2018, 06:44:56 PM »
Hi Mike....either is good...I would prefer the 25.....lighter, hopefully less fuel needed....
Have fun

Offline john e. holliday

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Re: .25 or .36 for ARF Nobler
« Reply #3 on: April 13, 2018, 11:10:43 AM »
Yes, go with the 25.   Then play with props and line length.   
John E. "DOC" Holliday
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Offline Charles Meeks

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Re: .25 or .36 for ARF Nobler
« Reply #4 on: May 01, 2018, 07:49:01 PM »
Mike, I read in a post where Randy Smith said that an O.S. .25 FSR would make a great Nobler engine with a 10-4 prop.  The FSR is a dualBB engine that is schnurle ported.  They make lots of power.  I think the Royal is a clone of the FSR.  Randy Smith will know.  I researched this looking for info on my FSR and now plan to use it in my ARF Nobler. 
Charles Meeks
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Offline Matt Spencer

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Re: .25 or .36 for ARF Nobler
« Reply #5 on: May 19, 2018, 08:25:42 PM »
I found a OS 25 FSR pulled a 47 Oz thingo quite well , IF you flew it smoothly . In fact it taught smooth operation & the pitfalls of corse usage .

10 x 6 T F polyfloppy prop @ 9 1/2 with rounded fr of tip good , 9 x 6 or 9 x 4 if blowing .Black ones ( didnt break one , tho the poly got bent a few times ) .

Used 55 ft .018 lines , so about 58 ft radius . But flown on 67 Ft .016 solids ones , pulled itself thru with slack / bow in lines . But kept moving . Full schedule .

So the TT would be my choice . Ball Race .FSR Clone ( I assume ) . 

Offline Al Ferraro

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Re: .25 or .36 for ARF Nobler
« Reply #6 on: July 10, 2018, 05:55:38 PM »
Brodak 40 would be the best engine if you could pick one up.
Al

Online Tim Wescott

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Re: .25 or .36 for ARF Nobler
« Reply #7 on: July 10, 2018, 06:38:36 PM »
So did you get it flying?  What engine did you use?  How'd it go?
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Offline mike londke

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Re: .25 or .36 for ARF Nobler
« Reply #8 on: July 15, 2018, 05:04:48 PM »
I put the .36 in it but never really got to fly it much. Controls started binding. I have to open it up. :(
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Online Tim Wescott

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Re: .25 or .36 for ARF Nobler
« Reply #9 on: July 16, 2018, 02:00:24 PM »
I put the .36 in it but never really got to fly it much. Controls started binding. I have to open it up. :(

I have the remains of an ARF Nobler that I got from a friend when it was still whole.  The controls started binding on that one, too -- at the top of an outside loop, which is why I only have remains, now!
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The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline MikeyPratt

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Re: .25 or .36 for ARF Nobler
« Reply #10 on: July 29, 2018, 03:29:12 PM »
Mike,
When I was a boy (a long time ago) in the early sixties, I flew a box stock Nobler with a Veco 19 that had ton's of power.  It only weighed 32 or 34  ounces (silkspan and very little dope).  The prop I used was a Torpedo Plasticoat 10 X 4, four once tank, 1-1/2 Veco racing wheels, Froom 1-3/4 spinner, flew it on 58 lines, Testers #9 fuel.  The Guy's in Escondido, CA all told me it wouldn't fly let alone win any contest.  Well BS to that I said but what does a 12 year old know?  The next contest i beat all of them in the wind hands down.

Mikey


Online Ken Culbertson

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Re: .25 or .36 for ARF Nobler
« Reply #11 on: July 29, 2018, 11:51:19 PM »
I put the .36 in it but never really got to fly it much. Controls started binding. I have to open it up. :(
ARF Nobler Rule #1 - Replace the Controls.  I almost list mine when the controls locked up. 

ken
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Offline john e. holliday

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Re: .25 or .36 for ARF Nobler
« Reply #12 on: July 30, 2018, 11:17:38 AM »
I guess mine is due for elimination as all I replaced was the bell crank.  It is flying with an EVO 36 and an additional amount of lead to the tail.  No cowl as I didn't want to cut it up any more. D>K
John E. "DOC" Holliday
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Offline Phil Spillman

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Re: .25 or .36 for ARF Nobler
« Reply #13 on: September 04, 2018, 09:50:48 AM »
Ten of more years ago I had an ARF Nobler with a Saito .404C mounted for power. this was a truly excellent marriage of plane and power! If possible you may want to consider this somewhat  off beat idea for this plane! I guarantee you won't be dissatisfied!

Phil Spillman

PS. I did make one dumb  move and flew it in some wind and lost the ship to stupidity!
Phil Spillman

Offline Mark Mc

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Re: .25 or .36 for ARF Nobler
« Reply #14 on: September 04, 2018, 06:57:52 PM »
Phil,

Was that the FA-40 or the FA-40a?  I've been mulling putting my FA-40 in the ARF Nobler in my closet for a little while now.

Mark

Offline Dave Hull

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Re: .25 or .36 for ARF Nobler
« Reply #15 on: September 11, 2018, 10:50:37 PM »
I swapped out a Fox .35 in a Noblarf for an OS 25FSR a few years back. Bolt pattern is almost the same and you can cheat enough to make it work. The FSR had way too much power as I had it set up. Needed a smaller venturi and less "peaky" muffler. Didn't have the right venturi laying around so I took it back out. Been flying it with a very polite Fox .35 ever since.

The irony was that the guys at the field that looked it over when I brought it out said a 25 was never going to be enough to do stunts on a Nobler. So I let it rip on the first flight. t was at least as fast as one with a "stunt tuned" FP 40 doing a runaway....

I need to set up the engine right and try it again. The built-in tank isn't quite big enough for the Fox, and I miss the extra power when the wind picks up....

McSlow



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