2-Cycle or 4-Cycle for a 1/7-1/8 Warbird? Which is the preferred type?  
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All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> 2-Cycle or 4-Cycle for a 1/7-1/8 Warbird? Which is the preferred type?
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[Poll]

2-Cycle or 4-Cycle for a 1/7-1/8 Warbird? Which is the preferred type?
2-Cycle because it costs less to purchase
  4% (5)
2-Cycle because it weighs less
  5% (6)
4-Cycle because of the sound it makes
  45% (49)
4-Cycle because it is more fuel efficient
  2% (3)
4-Cycle because it swings a larger propellor
  37% (40)
2-Cycle because it has less moving parts
  3% (4)


Total Votes : 107
(last vote on : 8/10/2008 12:41:02 PM)
(Poll will run till: -- )
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2-Cycle or 4-Cycle for a 1/7-1/8 Warbird? Which is the ... - 2/6/2004 9:51:13 PM   
Kmot



Posts: 7743
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		What is your favorite engine type for the warbirds, and why?

If cost were not an issue, which would you prefer?

Does swinging a larger prop at slower RPM benefit a Warbird?

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       Post #: 1

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/6/2004 10:47:46 PM   
Woody218-RCU



Posts: 387
Joined: 3/9/2002
From: Bismarck, ND, USA
Status: offline 		It sure worked good on the full scale warbirds...but then, we really don't have to worry about the blade tips going supersonic like the big birds. I prefer the sound of a 4 stroke with a big prop, having a P-51 go by with the engine screaming kind of destroys the scale effect.

(in reply to Kmot)
       Post #: 2

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/6/2004 11:28:06 PM   
Richard L.



Posts: 8775
Joined: 7/28/2002
From: Redmond, WA, USA
Status: offline 		4-stroke all the way for me. Most warbirds need nose weight anyway. Also, I do not want any of my warbirds to sound like a run-of-the-mill trainer or acrobatic plane at the field.

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(in reply to Kmot)
       Post #: 3

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/6/2004 11:31:00 PM   
AirRayInc



Posts: 922
Joined: 12/30/2001
From: San Pedro, CA, USA
Status: offline 		60" and smaller 4 stroker

70" and bigger 2 stroke

81" and bigger Gasser

Ray

(in reply to Richard L.)
       Post #: 4

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/6/2004 11:38:40 PM   
nchrome


 

Posts: 701
Joined: 3/27/2002
From: Galesburg, IL, USA
Status: offline 		Well I have both one is a 60 size P-47 with a OS60 fourstroker and I also have a TF giant scale with a US41 gasser. They both sound great so its what you mite prefer. I prefer what ever my wallet will let me have. But I do lean a little towords fourstrokers.

(in reply to AirRayInc)
       Post #: 5

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/7/2004 12:00:42 AM   
MEMPHISBELLE


 

Posts: 227
Joined: 2/7/2002
From: CHILLICOTHE, IL, USA
Status: online 		I like four strokers. Go to www.millingtonbarnstormers.org and click on 2003 memphisbelle classic then down load the short video clip of my B-17 taking off. I think you will understand why I say use four strokers. Its built from don smith plans and had saito .91's. I hit 90 flights on the bird while I was there and haven't had an engine quit in flight yet.

BOEING THERE IS NO SUBSTITUTE!

(in reply to nchrome)
       Post #: 6

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/7/2004 12:34:01 AM   
Doug D.


 

Posts: 1166
Joined: 10/10/2002
From: Wilson, NC, USA
Status: offline 		This is pretty much a personal choice that can be based on many different things. As all of these guys have noted. Things like prop size, noise, power and cost are only part of the things most guys look at.
I have bought engines first (because I liked Them) then decided what to use them for. Silly I know but sometimes the engines says "Buy Me". Hey! I'm not the only one.
My TF corsair has a MVVS .77 in it because I runs good and has a lot of power. And my TF Spitfire is power by a Laser 4s. It fits better in the cowl.
Interesting survey though. And I can agree with everything stated here so far. It's pretty much a personal choice.

(in reply to Kmot)
       Post #: 7

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/7/2004 1:44:30 AM   
Richard L.



Posts: 8775
Joined: 7/28/2002
From: Redmond, WA, USA
Status: offline
quote:

ORIGINAL: MEMPHISBELLE

down load the short video clip of my B-17 taking off. I think you will understand why I say use four strokers. Its built from don smith plans and had saito .91's.


Multi-engine planes already sound good with 2-strokes, but those four Saito .91's sound awesome.

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http://www.WarbirdObsession.com/
Tamiya Panther, Tamiya King Tiger(3), Tamiya Tiger I, HL Tiger(3), HL Panzer III(2), HL Panther, HL Pershing, HL Bulldog, WSN T-34/85, HE Leopard 2A5

(in reply to MEMPHISBELLE)
       Post #: 8

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/7/2004 3:42:13 AM   
Kmot



Posts: 7743
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		Ray, you made a good point that I should have clarified when I created the poll! Warbirds come in all sizes and I suppose the giant birds require the large gas engines.

To clarify, I was thinking along the lines of the 1/8-1/7 scale 'birds.

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(in reply to Richard L.)
       Post #: 9

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/7/2004 3:48:46 AM   
Kmot



Posts: 7743
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		OMG! MemphisBelle that take-off gave me chills! I thought I was watching 12 0'Clock High again.

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(in reply to Kmot)
       Post #: 10

RE: 2-Cycle or 4-Cycle for a Warbird? Which is the pref... - 2/7/2004 4:11:24 AM   
AirRayInc



Posts: 922
Joined: 12/30/2001
From: San Pedro, CA, USA
Status: offline 		Crap Wes, that does sound good, matter of fact just before it ran, I turned my head, looked back and was ready to come and call you names for posted a full scale as a model. Way to go!
Ray

(in reply to MEMPHISBELLE)
       Post #: 11

RE: 2-Cycle or 4-Cycle for a 1/7-1/8 Warbird? Which is ... - 2/7/2004 4:42:31 AM   
nchrome


 

Posts: 701
Joined: 3/27/2002
From: Galesburg, IL, USA
Status: offline 		Just checked out the flight too and was awed about the sound and take off of this big bird. Can't wait for my B-17 to be finished of course it will only have OS 26 fourstrokers. But still should sound just great.

(in reply to AirRayInc)
       Post #: 12

RE: 2-Cycle or 4-Cycle for a 1/7-1/8 Warbird? Which is ... - 2/7/2004 5:03:32 AM   
mugenkidd



Posts: 1492
Joined: 11/28/2002
From: Oklahoma City, OK, USA
Status: offline 		Well you didn't really list enough options for why one may choose a 2 stroke. I chose 2 strokes because they have more power and less moving parts, and as long as you stick with a good brand you don't have to worry about engine failures, ie OS and Moki. Also I know most think I'm being unreasonable, but I don't by the whole idea that a 4 stroke swings a large prop. A .50 size 2 stroke will swing a bigger prop than a .50 size 4 stroke. So yeah, you put a bigger engine like a .70 in a plane of course it will swing a bigger prop than a .46 size 2 stroke, but I just don't think thats comparing apples to apples. And then as you get bigger the 2 strokes definately gain the advantage, a OS 1.60 fx will definately swing a bigger prop than a saito 180. And although 4 strokes sound different they really don't sound a whole lot like a real airplane to me anyways, the sound just doesn't turn me on enough to pay the difference in price and drop in performance. And I know I know, four strokes make more power down low and don't take as long to spool up as the smaller 2 strokes, well warbirds don't need 3d capable throttle responces so I still don't have a good reason to use a four stroke for myself. But hey if someone likes 4 strokes that all well and fine with me and I'm not trying to put anyone down, its all about having fun. I just wish you could narrow or broaden the criteria on the poll, it seems kind of biased to 4 stroke use.

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(in reply to nchrome)
       Post #: 13

RE: 2-Cycle or 4-Cycle for a 1/7-1/8 Warbird? Which is ... - 2/7/2004 5:13:33 AM   
CorsairJock



Posts: 1909
Joined: 4/14/2002
From: Parchment, MI, USA
Status: offline 		Not all the possibilities listed make sense. For instance: " 2-Cycle because it weighs less ", the Saito engines that I use are lighter than 2 stroke engines of same displacement. I have .30, .40, .56, .72, .91, & 1.00, and each is as light or lighter than 2 stroke of same size.
As I don't think one is really better than the other, each has it good points and bad points, so I'll refrain from voting and leave it at this: we all have our own preferences, and to each his own.

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(in reply to Kmot)