Weston Magnum Question  
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Weston Magnum Question - 7/18/2003 4:34:02 AM   
strong


 

Posts: 263
Joined: 7/24/2002
From: savannah, GA, USA
Status: offline 		I put my westom magnum toghter the other day and have a question for some of the magnum pilots.Is 17000 rpm's with the west 50 engine and a 9/6 prop turning fast enough for first flit launch.....or must it turn faster.
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Weston Magnum Question - 7/18/2003 4:59:32 AM   
Rudeboy



Posts: 3256
Joined: 12/9/2002
From: Bejing, BELGIUM
Status: offline 		I've never tried a 9x6 prop, so I can't tell you how fast the engine should turn it...

But 17000 on that prop is more than enough to fly the Magnum... it should pull right out of your hand...enough to go vertical out of sight...

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...I think it needs more power...

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Weston Magnum Question - 7/18/2003 5:07:24 AM   
strong


 

Posts: 263
Joined: 7/24/2002
From: savannah, GA, USA
Status: offline 		can you slow this plane down enough on first flit to at least trim it or must you fly wide open at all times.

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Weston Magnum Question - 7/18/2003 5:25:11 AM   
cabanestrut2002



Posts: 1094
Joined: 11/27/2002
From: camborne, UNITED KINGDOM
Status: offline 		magnums can be flown pretty slowly, but are built for speed, trim it at half throttle.
have you flown quick models before?


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Weston Magnum Question - 7/18/2003 5:47:27 AM   
strong


 

Posts: 263
Joined: 7/24/2002
From: savannah, GA, USA
Status: offline 		I fly a turbine trainer that dose about 100 mph and a pylon racer that must fly about 120 mph. But I have seen video of this plane and it is very fast.

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Weston Magnum Question - 7/18/2003 5:56:14 AM   
cabanestrut2002



Posts: 1094
Joined: 11/27/2002
From: camborne, UNITED KINGDOM
Status: offline 		youll be fine then.
i was just making sure you werent a newbie trying to learn to fly on a magnum!!!!!!!!!!!!!!


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Weston Magnum Question - 7/18/2003 6:09:28 AM   
strong


 

Posts: 263
Joined: 7/24/2002
From: savannah, GA, USA
Status: offline 		I have lot of flying experience but no hand launch experience I want to get it right the first time. Also how will it bleed off airspeed and land.

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Weston Magnum Question - 7/18/2003 6:21:11 AM   
Rudeboy



Posts: 3256
Joined: 12/9/2002
From: Bejing, BELGIUM
Status: offline 		The 9x6 prop will provide you with plenty of thrust, but still, get someone to launch it for you the first time... at least until the plane is trimmed and you get used to how it handles.

The Magnum slows down pretty fast... compared to a sleek F3D race plane that is... It needs a fair amount of room, but not excessive.

Also, with that big prop it should slow down pretty fast when you pull the engine to idle... and it won't be that fast to start with so it will basically be like any sport plane.

The first thing I do when I fly a new plane is trim it... the second thing is testing the slow flight characteristics... I suggest you do the same thing while there is still enough fuel in the tank to go around once... but then again you know all that since you are flying a turbine trainer...:p

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Revver Brother #33
...I think it needs more power...

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Weston Magnum Question - 7/18/2003 7:22:39 AM   
strong


 

Posts: 263
Joined: 7/24/2002
From: savannah, GA, USA
Status: offline 		Thank for the info.Yea I know to trim and start to test glide for landing but it's always good to hear this from someone who has been there and done that.

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RE: Weston Magnum Question - 7/22/2005 7:02:33 PM   
rcalbuquerque


 

Posts: 207
Joined: 12/8/2003
From: Albuquerque, NM, USA
Status: offline 		I just picked up a used Weston UK Magnum ready to fly and have a few ??? What type or fuel nitro% should I use and what prop? Thanks


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RE: Weston Magnum Question - 7/22/2005 7:24:06 PM   
Evil Homer


 

Posts: 320
Joined: 9/27/2003
From: CubbingtonWarwickshire, UNITED KINGDOM
Status: offline 		what engine is on your magnum

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RE: Weston Magnum Question - 7/22/2005 7:29:11 PM   
rcalbuquerque


 

Posts: 207
Joined: 12/8/2003
From: Albuquerque, NM, USA
Status: offline 		it has the West 50V1 with pipe


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RE: Weston Magnum Question - 7/22/2005 7:35:01 PM   
Evil Homer


 

Posts: 320
Joined: 9/27/2003
From: CubbingtonWarwickshire, UNITED KINGDOM
Status: offline 		I run Prosynth 10 through mine, happy as and it screams on a 8x8-10

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RE: Weston Magnum Question - 7/22/2005 7:35:46 PM   
rcalbuquerque


 

Posts: 207
Joined: 12/8/2003
From: Albuquerque, NM, USA
Status: offline 		I just checked Weston's web site...they say 5 to 15 % nitro and a 9/6 or 9/7 prop. The guy I got the plane from was running a 9/6 on 30% nitro. I think that's to much nitro but what do I know. I was thinking a 9/7 and 15%


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RE: Weston Magnum Question - 7/22/2005 7:37:46 PM   
rcalbuquerque


 

Posts: 207
Joined: 12/8/2003
From: Albuquerque, NM, USA
Status: offline 		I'll try the 8x8- 10..... thanks


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RE: Weston Magnum Question - 7/29/2005 5:01:05 PM   
MJD


 

Posts: 1806
Joined: 5/27/2003
From: Orangeville, ON, CANADA
Status: offline 		30% nitro is too much, unless the compression has been reduced via head shims. The Manufacturer's recommendation is 10-15% nitomethane Prosynth. If you don't have Prosynth use some other good quality synthetic oil fuel, but don't exceed 15% nitro with the engine as is out of the box.

I really don't see any point in the combination of 9-6 prop and 30% nitromethane. It's like trying to go fast in a sports car by adding a turbocharger then driving in 2nd or 3rd gear.. great for climbing hills but not for top speed! The usual recomendations are 9-6 for running in and test flights, then 8-8 to 8-10 for speed. The 8-8 may perform better if the header is cut down a bit, up to 1", leave stock for higher pitch.

Mike D.




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RE: Weston Magnum Question - 7/29/2005 5:28:20 PM   
rcalbuquerque


 

Posts: 207
Joined: 12/8/2003
From: Albuquerque, NM, USA
Status: offline 		Hi Mike thanks for the post....I got this plane from a wealthy club member who is a good friend. He said here fly this plane and after you crash it give me my motor and servo back. Of coarse the plane was battle damaged and needs a little detail work . The Magnum was set up with some very heavy servos (hitec 5645's) and was modified for rudder control. I removed these servo;s and went with hitec 5245mg's and returned the rudder to stock. My friend is not the type of guy who reads instructions or breaks in motors or installs head shims so I hope he didn't damage the motor. We fly at 5600 ft altitude here and I think he felt the 30% would help with the loss of power we get at this altitude. I will run 10% and a 8x8 prop. The plane is all fixed now and just needs some touch up in the covering. I will leave the pipe lenth as for now until I see how she fly's................Lou


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RE: Weston Magnum Question - 7/30/2005 1:53:30 AM   
strong


 

Posts: 263
Joined: 7/24/2002
From: savannah, GA, USA
Status: offline 		If the engine is still good 15% fuel is plenty, magnum is a fast plane no matter what.I would try the 9x6 prop for easy first launch.Have'nt flew mine in months(chicken I guess)just remember not to use very much aileron movement at all.

< Message edited by strong