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RE: Why overpower airplanes? A rant... - 12/7/2006 11:48:04 PM   
Flyer 202



Posts: 88
Joined: 5/9/2006
From: Caledonia, MI, USA
Status: offline 		Why not if you get into a sticky stituation then poor on the coal and wala you are thrown from
that problem so you can go put you plane in to another mess.

Flyer 202

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RE: Why overpower airplanes? A rant... - 12/8/2006 3:48:22 AM   
pilot727


 

Posts: 680
Joined: 6/16/2006
From: Clearfield, UT, USA
Status: offline 		I never get into any sticky situations

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RE: Why overpower airplanes? A rant... - 12/11/2006 4:17:11 PM   
ekitik


 

Posts: 26
Joined: 7/30/2004
From: Woodbury, CT, USA
Status: offline 		I had a great planes cub 60 size with a 90 inch wingspan with a 91 os II and after flying it I believe it would have been better to use a 70 osII which was the lower of the range.

I ran a os61 in a P39 GOLD kit and found it to be under powered. Went beyound the recommendations and got a 91fx and found it was too fast. After all was said and done I think the ST 75 which was specifly mentioned would be the best.

The only engine I have found that works on a fourty size bird has extra power and is lighter that most 46 52s and 51s is the K&B 61ABC TWIST. This is an outstanding value for 99 bucks and it really runs great too.

Eric

< Message edited by ekitik -- 12/11/2006 4:18:40 PM >

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       Post #: 128

RE: Why overpower airplanes? A rant... - 12/11/2006 4:51:05 PM   
jrf


 

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From: Burbank, CA, USA
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quote:

got a 91fx and found it was too fast.


And you never considered a larger, lower pitch prop? Or throttling back at cruise as the full scale does?

Jim

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       Post #: 129

RE: Why overpower airplanes? A rant... - 12/11/2006 9:17:10 PM   
FlyingGreg



Posts: 582
Joined: 1/21/2002
From: West Chester, OH, USA
Status: offline 		ekitik--I have the GP 60 sized Cub with an OS 70--Used to have an OS 91 on it, but moved it to a different plane. The 70 flies it very well. Does loops, rolls, hammerheads, inverted and "knife edge" to a certain extent.

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RE: Why overpower airplanes? A rant... - 12/12/2006 12:28:22 PM   
TCrafty



Posts: 450
Joined: 2/25/2006
From: Lakeland, FL, USA
Status: offline 		I don't know if this has been mentioned before or not but, besides all the common aguements for HAVING overpowered an airplane, power to pull out should the unexpected happen, power to takeoff, more fun (relative), but remember, when that larger engine and prop are running at 1/3 throttle instead of wide open, it's much quieter!

i have a Saito 72 on my Kadet Senior and one of the electric guys at my field commented the other day that when he and I were flying together, it was the first time he heard his electric with a glow engined plane in the air at the same time. It's just off idle, sounded great and was more scale than it would have been with a smaller engine.

Maybe I"m missing something but how can an engine, large or small, make a plane go too fast? If you can throttle back to make it land and power it up to take off, happy flying should be somewhere in the middle of all that. Right?


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RE: Why overpower airplanes? A rant... - 12/12/2006 4:38:34 PM   
jrf


 

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From: Burbank, CA, USA
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quote:

when that larger engine and prop are running at 1/3 throttle instead of wide open, it's much quieter!

And uses a lot less fuel and will last a lot longer. In fact, a 91 at half throttle will use less fuel that a 72 at full throttle, make far less noise and less vibration, last forever, and give you a reserve of power to get you out of trouble.

Speed is a function of prop pitch and throttle setting. Using a more powerful engine might make it possible for the airplane to go faster, but it certainly doesn't make the airplane go faster.

Jim

< Message edited by jrf -- 12/12/2006 4:42:18 PM >

(in reply to TCrafty)
       Post #: 132

RE: Why overpower airplanes? A rant... - 1/2/2007 1:54:08 AM   
Doc Austin



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From: Largo, FL, USA
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quote:

ORIGINAL: TCrafty

Maybe I"m missing something but how can an engine, large or small, make a plane go too fast?


It's not possible for a plane to be too fast. I'm still looking for one that's fast enough.





By God, this is still America!



http://www.youtube.com/watch?v=rawC-C9JMWA

< Message edited by Doc Austin -- 1/2/2007 2:00:42 AM >

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RE: Why overpower airplanes? A rant... - 1/2/2007 2:31:56 AM   
pilot727


 

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From: Clearfield, UT, USA
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I got a ys-160 on my cap 232 sport and i am trying to get just a little bit more speed out of it, you know the boom i want to break the sound barrier would'nt that be something huh doc

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       Post #: 134

RE: Why overpower airplanes? A rant... - 1/2/2007 2:56:25 AM   
Carpilot


 

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Joined: 9/13/2008
From: Lakewood, CO, USA
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quote:

Never have I powered an airplane as ludicrously as I have read in some of the posts on this forum. Folks putting 90 or 100 sized engines on 60 sized planes irregardless of the wing loading affect. Some one just suggested putting a .75 2 stroke on a very LIGHT 40 sized Uproar?!?!?!? What are these folks thinking?



How about a Saito 82a in a Pulse XT .40, that is the top end of engines listed in the instruction manual, I'm sure many would consider this extremely overpowered.




Darn, I need to come up with a snappy signature line.

(in reply to dmrcflyr2)
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RE: Why overpower airplanes? A rant... - 1/2/2007 2:58:39 AM   
nitro junky



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Joined: 8/19/2005
From: canastota, NY, USA
Status: offline 		I don’t think I have any airplanes that are not over powered. I have tried to blow the wing off a few airplanes from speed, but have not done it yet. Maybe some day. Just to keep this thread a little longer what would you thing if I told you I have even gone as far as putting NOS in a plane for more speed.

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RE: Why overpower airplanes? A rant... - 1/2/2007 3:02:52 AM   
Carpilot


 

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From: Lakewood, CO, USA
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quote:

ORIGINAL: nitro junky

I don’t think I have any airplanes that are not over powered. I have tried to blow the wing off a few airplanes from speed, but have not done it yet. Maybe some day. Just to keep this thread a little longer what would you thing if I told you I have even gone as far as putting NOS in a plane for more speed.


I think you've earned your handle Nitro Junky. LOL

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RE: Why overpower airplanes? A rant... - 1/2/2007 6:18:28 AM   
pilot727


 

Posts: 680
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From: Clearfield, UT, USA
Status: offline 		I have e friend with a pulse with an 82 saito and it flies great and is far from being over powered

(in reply to Carpilot)
       Post #: 138

RE: Why overpower airplanes? A rant... - 1/2/2007 11:23:15 PM   
Carpilot


 

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From: Lakewood, CO, USA
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quote:

ORIGINAL: pilot727

I have e friend with a pulse with an 82 saito and it flies great and is far from being over powered


That's good news, I'm just waiting for some more snow to melt so I can maiden mine, or I'm looking for a set of skis right now online.

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       Post #: 139

RE: Why overpower airplanes? A rant... - 1/2/2007 11:56:09 PM   
LUDS96



Posts: 412
Joined: 10/16/2002
From: East Haven, CT, USA
Status: offline 		As a long time member of this hobby. I have some understanding of power is good more power is better! It must be controlable power to be better. Weight to Power is most important. Many people put heavy gassers in small planes to save on fuel cost. The plane is so heavy then it's wings can't support the weight. I like enough power where the plane can go vertical. At least for awhile. Power can get you out of a lot of situations. It can also get you into them as well. I have a twist 3D big wings alot of squares. I have a Magnum 91 FS in it. It will fly at a crawl no bad habits at all. Unlimited Vertical. I flew a Great Planes Giles 202 for three years. Loved it. Just bought a GSP extra 300 to replace it. I landed short of the field headed up wind and it was blowing harder than I though and sank into a tall small tree. Survied the tree, did not survive the fall when the tree came down.It had a Pumped OS 160 in it. Great Verticle performance with out the weight. I flew the jet in my signiture for a long time as well. Elevator let go after some rude flutter! It had a ST 90 with a pipe. Did 100 plus. Power to weight is the key. Also air frame that are bulky like Cubs and Stearman are not supossed to fly fast. Alot of power with a short prop. Give's them good pickup and recovery. I love my 91 powered twisted> New Years Day Happy New Year

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< Message edited by LUDS96 -- 1/2/2007 11:58:22 PM >

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