Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Magnum 52, anyone running a pipe on these?

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Old 06-05-2007, 03:02 AM
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still4given
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Default Magnum 52, anyone running a pipe on these?

Hi Guys,

I have couple Magnum 52's. THey actually turn some pretty good RPM's on the stock muffler. Have any of you guys put a pipe on these and if so, How well did it perform?

Thanks, Terry
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Old 06-05-2007, 11:43 AM
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BigBadJon
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Default RE: Magnum 52, anyone running a pipe on these?

i have 2 of them running jetstream mufflers on 2 of my prop jets. they are awesome. a big noticable difference in performance.
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Old 06-05-2007, 12:56 PM
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Default RE: Magnum 52, anyone running a pipe on these?

May I ask what prop you are running and what RPM you are running on the ground?

Thanks, Terry
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Old 06-05-2007, 02:49 PM
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Default RE: Magnum 52, anyone running a pipe on these?

My Magnum 52XLS was strapped to a Jettstream too. I ran apc9x8 and got around 13K. But wore out the bearings in only a dozen flights. Their bearings not as durable as ones in the OS46.
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Old 06-05-2007, 11:46 PM
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Default RE: Magnum 52, anyone running a pipe on these?

That's strange, I haven't tried an APC 9x8 yet but mine will turn an APC 9x7 at 15,200 rpm. I was hoping for something like 16.500 with a pipe. That is why I started this thread. I was wondering what the upper limit of this motor was and if it can run in the high teens like the Rossi and Jett. I know it won't be a powerful as those but it turns pretty good stock.

Blessings, Terry
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Old 06-06-2007, 09:19 AM
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Default RE: Magnum 52, anyone running a pipe on these?

im going flying today. ill tach my 2 mag 52's and get back with ya. they are way above 14k for sure. closer to 16.5-17k im guessing. will know for sure in a few hours
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Old 06-06-2007, 10:32 AM
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Default RE: Magnum 52, anyone running a pipe on these?

Hey John,

That is exactly what I am looking for. Thanks a bunch.

Blessings, Terry
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Old 06-10-2007, 08:39 AM
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Default RE: Magnum 52, anyone running a pipe on these?

with a 10x7 APC, 15% nitro i got 15.7k hope this helps.
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Old 06-10-2007, 09:30 AM
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Default RE: Magnum 52, anyone running a pipe on these?

Hi John,

That is exactly what I was hoping for. Looks like a good investment to me.

Blessings, Terry
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Old 06-10-2007, 12:14 PM
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Default RE: Magnum 52, anyone running a pipe on these?

Never mind
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Old 06-10-2007, 12:42 PM
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Default RE: Magnum 52, anyone running a pipe on these?


ORIGINAL: Razor-RCU

That is not bad, I know the mag-52 is a "sleeper". The cost of a Jettstream or UT muffler (while great products) bumps the cost to what? $160 or so? How much is a Webra-50 or 55?

I would buy a used Webra-50GT (stock muffler is fine), YS-45 or K&B-48 (UT or Jettstream)

9x8 APC

West-50V1 Weston Genesis 10% Stock 17.5 K
Jett-50 Jett Stream 15% Nelson Plug 17.2
K&B- 48 Ultrathrust 5% OS-8 16.2
Webra-50GT Stock 5% Idlebar 16.2
Rossi-53 Mini- Tuned 5% Thunderbolt 16.0
OS-50SX Tower 15% OS-8 16.0
Rossi-45 Mini- Tuned 5% OS-A3 15.6
OS-50FSR Bisson 90 15% Idlebar 15.4
Actually, I bought my Mag 52's on sale for $50 each. I just bought a UT for $65 so that puts me at $115. I own a Jett 50 and it really cooks but this thread is about making my Magnums run fast. All of the engines listed above are way more money than I will have invested. Do you own all of the engines you have listed there? Where did you get those figures?

Thanks, Terry
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Old 06-11-2007, 12:22 AM
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Default RE: Magnum 52, anyone running a pipe on these?

never mind
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Old 06-11-2007, 01:09 AM
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Default RE: Magnum 52, anyone running a pipe on these?


ORIGINAL: Razor-RCU

Yes I own or have owned these engines. These figures are from my testing over the last few years... All but the Jett and West were purchased for < $115

If you do not want any info. other than Magnum-52 stuff then sorry---- I have not run a magnum 2 cy. since the 80's because they sucked soo bad.

It's not that I don't want any info, but I've seen too many times where someone who doesn't like a certain manufacturer plays the spoiler by looking for threads about that manufacturer's products so they may offer alternatives or simply bash the product being asked about.

The information you listed above is certainly useful to someone who is looking to buy a 40 to 50 size engine for a fast plane. However, that is not what the theme of this thread is about. It is about making a Magnum 52 run faster by utilizing a tuned exhaust. Since you have not run a magnum since the 80's, it is unlikely that you would have any useful info about the Magnum 52 since it is a very recent design. Likewise, I am in no way trying to convert you over to using Magnums. It's like Robert Heinlein said. “Never try to teach a pig to sing; it wastes your time and it annoys the pig."

Blessings, Terry
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Old 06-11-2007, 09:26 AM
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Default RE: Magnum 52, anyone running a pipe on these?

My stock mag 52 turns 16k on apc 9x8 prop/15% nitro (baffle removed). I am not sure you will get enough gain to justify purchase of a tuned pipe. It would be a nice experiment though...
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Old 06-11-2007, 12:48 PM
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Default RE: Magnum 52, anyone running a pipe on these?

“Never try to teach a pig to sing; it wastes your time and it annoys the pig."

Annoyed?

Use higher nitro then champ
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Old 06-11-2007, 02:22 PM
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Default RE: Magnum 52, anyone running a pipe on these?


ORIGINAL: Razor-RCU

“Never try to teach a pig to sing; it wastes your time and it annoys the pig."

Annoyed?

Use higher nitro then champ

Not at all friend, didn't you see my ?
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Old 06-11-2007, 05:12 PM
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Default RE: Magnum 52, anyone running a pipe on these?

Try 30% and an OS-8 plug
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Old 07-15-2007, 05:49 PM
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Default RE: Magnum 52, anyone running a pipe on these?

Hi Guys,

Well I finally got around to testing this Mag 52 with an [link=http://www.pspec.com/details.asp?ProdID=54&category=8/results.asp?category=8]ultrathrust muffler[/link].
Here are the results that I measured on my bench engine stand using Power Master 15% and McCoy 59 plugs.

APC 8X10 =16.4K
APC 9X7 =17.8K
APC 9X8 =17.3K
APC 9X9 =16.6K
APC 8.75X9.0W =17.7K
APC 9X8.75 D1 =15.2K
MA 9X8 =17.2
TOPFLIGHT 9X8 =16.5
ZINGER 10X6 =15.1K

This engine is well broken in. Maybe too much as there is no pinch left at the top of the stroke any more. Idle and transition is not as good with this muffler but to be honest, these engines are not known for that anyway. I'm now looking forward to trying this in a sleek airframe.

Blessings, Terry
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Old 07-15-2007, 06:44 PM
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Default RE: Magnum 52, anyone running a pipe on these?

Well based on your stats this combo turns about the same as my Jett-50 and West-50 [&o]
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Old 07-15-2007, 07:14 PM
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Default RE: Magnum 52, anyone running a pipe on these?

Yes, those are some great numbers indeed.

Razor, my experience with the West is that it is an rpm engine. No sense in trying to lug it down, it doesn't work. It starts doing ok at about 19000, but it runs better at 20K+. I tried mine on a Jett Q500 muffler, and it didn't like standard size Q500 props... but it "overrevved the muffler" on smaller props. I suppose this means that the engine feels happier at 21K than at 19K.
A good test would be running the engine on a Q40 muffler, a decent venturi and Q40 props. That would tell us something. But unfortunately I don't have such a muffler. (anybody have a spare one they can borrow me so I can try it)
Also remember that the West is just a mass production engine like any other: there are bound to be lemons among them. Mine performs well, but not as well as other people's apparently. The second piston-liner set I got was tighter than anything I've ever seen, so there is variance in their production.
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Old 07-15-2007, 08:04 PM
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Default RE: Magnum 52, anyone running a pipe on these?

I've got to say I was pleasantly surprised at the rpm it turned with this pipe. It is the high RPM version of the Ultrathrust. I forgot to mention that I used [link=http://www.pspec.com/details.asp?ProdID=79&category=8]this extension[/link] as well. I'm not sure if that has a bearing on the results. I will say that the needle valve is a bit touchy with this muffler. Only time will tell if that is a problem in the air.

Blessings, Terry
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Old 07-20-2007, 02:12 PM
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Default RE: Magnum 52, anyone running a pipe on these?

I've done some searching and can't find a distributor in the US for the West Eurotech .50V1. Do any of you guys know where these can be purchased?

Thanks, Terry

Revver Bro one eight oh
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Old 07-20-2007, 02:24 PM
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Default RE: Magnum 52, anyone running a pipe on these?

You can get it directly from Weston....

www.westonuk.co.uk
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