RE: Magnum XLS-52  
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RE: Magnum XLS-52 - 9/29/2003 10:51:38 PM   
William Robison



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Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		scole:

I don't know what the 52 wil give, but be careful. Using the 12.25x3.75 APC the 0.46 on a Magic will over rev in level flight.

Bill.


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       Post #: 26

RE: <span class= - 12/19/2003 6:31:56 AM   
Ben


 

Posts: 3
Joined: 10/4/2003
From: melbournexfh,
Status: offline 		I've heard that the magnum xls rev's to hard with an APC 12.25x3.75. So what would be a good substitute for 3d flying

(in reply to William Robison)
       Post #: 27

RE: <span class= - 12/19/2003 7:03:18 AM   
William Robison



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

With a 46-52 engine the APC 12.25x3.75 is still a very good prop. Just pull the power back in level flight. The 46 FX on my Magic will over rev in level flight, and when it does the plane is going faster than design speed also. So I pull the throttle back.

You can try a 12x4, or even go up to a 12x6 on it, but I don't think you'll find anything that is better over all than the 12.25x3.75 APC. I normally avoid APC props like the plague, but for 3D with this range of engines there's nothing any where nearly so good, in my opinion. And that's why my one place to use APC is on my Magic.

Bill.

_____________________________

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       Post #: 28

RE: <span class= - 12/19/2003 8:43:23 PM   
Ernie Misner


 

Posts: 3160
Joined: 7/5/2002
From: Tacoma, WA, USA
Status: offline 		They advertise 18,000 rpms with a 9X6 prop on the .52XLS. Perhaps they are not too worried about that engine self-destructing!

Ernie

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       Post #: 29

RE: Magnum XLS-52 - 12/20/2003 3:23:13 AM   
seanychen



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Joined: 7/20/2002
From: Canton, MI, USA
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quote:

ORIGINAL: scole

What is everyone getting RPM's wise with a 12.25x3.75 prop on this engine?


After 30 oz of break in on 5% fuel,

Omega 15% nitro HELICOPTER - 17% (30% Castor 70% High Viscosity Lube)
Temp = 32 deg F

APC 12.25x3.75 = 12700 peak
Pro Zinger 12x4 = 12800 peak= 12800 peak

< Message edited by seanychen -- 12/19/2003 10:27:43 PM >

(in reply to scole)
       Post #: 30

RE: <span class= - 12/20/2003 3:24:10 AM   
seanychen



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From: Canton, MI, USA
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quote:

ORIGINAL: Ernie Misner

They advertise 18,000 rpms with a 9X6 prop on the .52XLS. Perhaps they are not too worried about that engine self-destructing!

Ernie


2-stroke ABC should be good for that RPM. I can't say the same about a standard glow plug though. Might need a colder plug.

(in reply to Ernie Misner)
       Post #: 31

RE: Magnum XLS-52 - 12/20/2003 4:50:43 AM   
Razor-RCU



Posts: 5291
Joined: 3/21/2002
From: Ramona, CA, USA
Status: offline 		Forgive me if this has been mentioned but I would bet that just like on the TT pro-46 the $13- Tower Muffler would give you 500 rpm on the Magnum...

Just a thought-

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       Post #: 32

RE: Magnum XLS-52 - 12/20/2003 5:06:15 AM   
DarZeelon



Posts: 7108
Joined: 4/9/2003
From: Rosh-Ha'Ayin, ISRAEL
Status: online 		James,

It could, but then, quite possibly it couldn't on the 9x6.

Tuned silencers are tuned to a specific RPM range. The Tower muffler is said to give a 1,000-1,200 RPM boost, over the standard OS 783 muffler, on a 10x6 when mounted on a .46FX, but on an 11.5x6, the boost was only about 400.
The 9x6, just the same, could bring the RPM to higher levels, than the muffler is tuned for. So boost could be quite modest.

Besides, the Magnum/ASP/SC/SY engines are already equipped with the extended, high volume silencer, Irvine .53 like design; not the short, low volume OS design. So the boost could be even lower.

You wouldn't know until you try.

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       Post #: 33

RE: Magnum XLS-52 - 12/20/2003 5:09:55 AM   
seanychen



Posts: 2914
Joined: 7/20/2002
From: Canton, MI, USA
Status: offline 		I bet it would. In fact, you just remind me to place the order.

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       Post #: 34

RE: Magnum XLS-52 - 12/20/2003 5:21:52 AM   
seanychen



Posts: 2914
Joined: 7/20/2002
From: Canton, MI, USA
Status: offline 		Hmm, Tower does not charge shipping cost for standard shipping of the Tower muffler. Shall I say Horray?

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       Post #: 35

RE: Magnum XLS-52 - 12/23/2003 1:08:47 AM   
Ernie Misner


 

Posts: 3160
Joined: 7/5/2002
From: Tacoma, WA, USA
Status: offline 		....<< 12800 peak .............

Please tell me how you like this engine by now. Also, how would you compare it and it's power to other engines you have owned, perhaps a .46.

I have a brand new Magnum .52 sitting here myself and am eager for any tips or ideas you might have. I have sealed the muffler up good with red RTV silicone, drilled out the little holes in the baffle a bit, and opened up the small hole in the muffler exit about two drill sizes. I should have tached it before and after doing those simple mods to the muffler, but it is too late now.

Ernie

(in reply to seanychen)
       Post #: 36

RE: Magnum XLS-52 - 12/23/2003 3:48:26 PM   
seanychen



Posts: 2914
Joined: 7/20/2002
From: Canton, MI, USA
Status: offline 		I haven't tached any other .46 recently other than a 46 LA, so I can't make a good comparison. But here is a thread of interest:

http://www.rcuniverse.com/forum/OS46_FX_with_11x6/m_1170815/tm.htm

It looks like the Magnum 52 is making about the same power as stock OS 46 FX. With Tower muffler, tuned pipe, or MCP, rpm's increase by up to 1000. I will see what the Tower muffler does for the Magnum 52 when I receive it, hopefully tomorrow.

(in reply to Ernie Misner)
       Post #: 37

RE: Magnum XLS-52 - 12/23/2003 4:44:30 PM   
Born to Fly



Posts: 163
Joined: 12/7/2003
From: SG, SINGAPORE
Status: offline 		Your Javelin look cools. And your photo is sharp. Wonder if you could post some video on how your javelin work with the Magnum ?

< Message edited by Born to Fly -- 12/23/2003 11:44:46 AM >

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       Post #: 38

RE: Magnum XLS-52 - 12/25/2003 10:52:43 AM   
Riccardo17


 

Posts: 9
Joined: 12/20/2003
From: Sandy Beach,
Status: offline 		Hi

Does anyone know the horsepower of the Magnum XLS-52?

Cheers, Riccardo

(in reply to Born to Fly)
       Post #: 39

RE: Magnum XLS-52 - 12/26/2003 2:43:35 AM   
Ernie Misner


 

Posts: 3160
Joined: 7/5/2002
From: Tacoma, WA, USA
Status: offline 		Why not just take the baffle out of the Mag .52 muffler? Since it already has the extra volume it would then be about the same as the Tower muffler.

Ernie

(in reply to Riccardo17)