RE: Club MAGNUM !  
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RE: Club MAGNUM ! - 9/15/2005 7:25:12 PM   
65 Chevy


 

Posts: 319
Joined: 9/11/2005
From: Pardee Village, MO, USA
Status: offline 		Thanks Mick,
I wondered about the throttle response and power of the 61. Thats why I was thinking of the 12 X 4 APC. I do have the 12 x 5 APC also. so I will probably start there. I also have 2 Magnum 80's and an ASP 80 available, so if the 61 is short on power, I know I can go with the 80 instead. I was thinking about the 61 because of weight. I have the same plane here with an OS 50 SX and that has very good vertical and hovers and pulls out very well. The 61 4 stroke is only 1 1/2 ounces heavier than the 50 sx.

I appreciate the help and information

(in reply to Bodge)
       Post #: 76

RE: Club MAGNUM ! - 9/15/2005 8:48:22 PM   
Bodge



Posts: 458
Joined: 2/14/2004
From: Northampton, UNITED KINGDOM
Status: offline 		Chevy,

That's the advantage of the 61 - it's fairly light. Once you start to go larger, with ASP/Magnum at least, you immediately jump up to 91 weight. With the 65, 70 and 80 weighing within 10 grams of the 91, you might as well use the 91 for everything...

If I remember correctly, I belive the 61 was pulling a 13 x 4 at 9,800 rpm on 5% fuel. Performance wise it is very similar to the 46 two strokes - and weighs about the same. It's a much nicer engine to fly with than the 46 and responds well to the throttle in a hover. I don't think it will have the performance of an OS 50, though. Certainly my ASP 52 2 stroke would leave it standing.

_____________________________

Mick

(in reply to 65 Chevy)
       Post #: 77

RE: Club MAGNUM ! - 9/16/2005 2:12:24 AM   
proptop



Posts: 4464
Joined: 10/18/2002
From: Rome, NY, USA
Status: offline 		I've got a .28, a .52 and an FS1.20

Guys...I have an early-mid 80's TT .25 (never been run, so I couldn't tell ya if it's poop or not )
Would that be basically the same as a Magnum?

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Revver Bro #77

(in reply to Bodge)
       Post #: 78

RE: Club MAGNUM ! - 9/16/2005 2:18:04 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		PT:

Go back to page one of this thread, I have posted two pictures of my TT made Magnum GP 25 there. If yours is the same, I suppose it could be called a "Mislabelled" Magnum. Haw.

Bill.

_____________________________

Real Airplanes have Two Engines
AMA 25139 - More than 40 years.

(in reply to proptop)
       Post #: 79

RE: Club MAGNUM ! - 9/16/2005 2:27:23 AM   
FrancisPerson


 

Posts: 673
Joined: 12/14/2001
From: Germantown, MD, USA
Status: offline 		Is a Magnum .28 any good? What size prop will it turn? I want to put it on a 3 and 1/2 lb Junior Tiger.

Francis

What RPM numbers with what prop ?

(in reply to William Robison)
       Post #: 80

RE: Club MAGNUM ! - 9/16/2005 2:31:16 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		Francis:

My little GP 25 runs about 13500 on the 8x4 three blade cut to 7" diameter. Hauls the Eaglet like there's no tomorrow. The Mag 28, being a newer design should be at least as good.

Bill.

_____________________________

Real Airplanes have Two Engines
AMA 25139 - More than 40 years.

(in reply to FrancisPerson)
       Post #: 81

RE: Club MAGNUM ! - 9/16/2005 2:32:55 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		Francis:

that dinn't sound right - rechecked (foul memory) and it's a 9x4 three blade cut to 8" diameter.

Bill.

_____________________________

Real Airplanes have Two Engines
AMA 25139 - More than 40 years.

(in reply to William Robison)
       Post #: 82

RE: Club MAGNUM ! - 9/16/2005 3:33:21 PM   
FrancisPerson


 

Posts: 673
Joined: 12/14/2001
From: Germantown, MD, USA
Status: offline 		Thanks, I had hoped to get a MECOA .32 as it is the same weight as a Magnum .28 but the MECOA .32 is no longer available.
The combat guys at my field like Magnums so I am inclined to try one.

Francis

(in reply to William Robison)
       Post #: 83

RE: Club MAGNUM ! - 9/17/2005 12:05:04 AM   
lpg


 

Posts: 2
Joined: 7/2/2005
From: Bell, CA, USA
Status: offline 		Hi all

Does any one know if a muffler from an os .91 2c will fit a Magnum .91 2c. I am mounting this xls .91 inverted and looking for a muffler that will fit in the cowl with only os showing possibility's... and yes Magnums sometimes has problems... but nothing that can't be solved all the while, making you a "better" mechanic.....

(in reply to FrancisPerson)
       Post #: 84

RE: Club MAGNUM ! - 9/17/2005 10:24:30 AM   
Bodge



Posts: 458
Joined: 2/14/2004
From: Northampton, UNITED KINGDOM
Status: offline 		Yes: the magnum/ASP are designed around OS and pretty much all silencers are interchangeable, size for size. A few other bits too...

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Mick

(in reply to lpg)
       Post #: 85

RE: Club MAGNUM ! - 9/19/2005 12:37:55 AM   
lpg


 

Posts: 2
Joined: 7/2/2005
From: Bell, CA, USA
Status: offline 		Thank you.

order is placed, Thanks again

(in reply to Bodge)
       Post #: 86

RE: Club MAGNUM ! - 10/24/2005 12:16:10 AM   
LordSirOb


 

Posts: 90
Joined: 10/16/2003
From: Palm City, FL, USA
Status: offline 		I tried my first 4 stroke, a Mag XL-70FS. So far, I am happy. 1 gallon of 10% omega for break-in with an APC 13 X 6 prop, with the last 1/2 gallon breakin in the air. The valves were adjusted and now I'm using Wildcat 15%. I had to lean in the low end just a smidgen to get a smooth transition, and peaked on the ground at 10K and I fly at 9.5K rpm.

I must say that purchasing another Magnum was a hugh leap of faith on my part after being the unfortunate owner of the XLS 52A POS. So far, this engine is performing very well. I may have to try another Magnum 4 stroke if this one keeps up.

(in reply to lpg)
       Post #: 87

RE: Club MAGNUM ! - 10/24/2005 1:42:00 AM   
Kimhoff



Posts: 403
Joined: 9/19/2003
From: Jefferson, MO, USA
Status: offline 		Well, I picked up a Magnum FS91 off of E*** for $80 complete with muffler and prop nuts. What a nice running engine. idles all day at 2200 and pulls my 60 size Stinger nicely.

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Saito Club Member 162

(in reply to LordSirOb)
       Post #: 88

RE: Club MAGNUM ! - 10/24/2005 6:10:26 PM   
Ernie Misner


 

Posts: 3155
Joined: 7/5/2002
From: Tacoma, WA, USA
Status: offline 		Try a little 46 XLX when they go on sale for $49. I love mine!

Ernie

(in reply to Kimhoff)
       Post #: 89

RE: Club MAGNUM ! - 10/24/2005 7:32:35 PM