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Magnum Engines XL 52 RFS Blue R/C 4-Stroke Engine

Availability: In stock

$149.99

No. 210851

Quick Overview

This is a Magnum XL .52RFS R/C 4-Stroke Engine. The XL .52RFS is a single cylinder, four-stroke engine incorporating an aluminum piston, iron ring and steel sleeve for long life and high power output. A dual-needle valve carburetor for precise fuel/airflow metering is standard.

Magnum Engines XL 52 RFS Blue R/C 4-Stroke Engine

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$149.99

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User's Guide (489.8 KB)This is the User's Guide for the Magnum XL .52RFS Engine

Details

Magnum XL .52RFS

R/C 4-Stroke Engine

This is a Magnum XL .52RFS R/C 4-Stroke Engine. The XL .52RFS is a single cylinder, four-stroke engine incorporating an aluminum piston, iron ring and steel sleeve for long life and high power output. A dual-needle valve carburetor for precise fuel/airflow metering is standard. The engine features a dual-ball bearing-supported crankshaft and camshaft, dual bushing-supported connecting rod, and a high-flow muffler for more power and reduced noise. Your Magnum XL RFS series engine was designed by expert engineers and built by master craftsmen using only the highest quality materials and CNC machinery. These qualities provide the long life and dependability you have come to expect from an engine of this caliber.

Magnum has been bringing you high performance engines at an affordable price for more than 20 years! During that time the line has grown and expanded to offer a full line of 4-stroke and 2-stroke engines. And, all are made from the finest materials on the latest machinery. Plus, you get the added security of a full one-year warranty that protects you from any manufacturing defects and or premature wear (crash damage not covered). For reliability, high quality, and performance the choice is MAGNUM!

Features:

• Ringed Piston Design for Long Life and High Power

• Aluminum Piston, Iron Ring and Steel Sleeve

• Rear-Updraft, Dual Needle Carburetor

• High-Flow Quiet Muffler

• Dual Ball Bearing-Supported Crankshaft and Camshaft

• Dual Bushing-Supported Connecting Rod

• Blue Rocker Valve Cover

• Safety Propeller Nut

Specifications:

• Displacement: 8.53cc

• Bore: 23mm

• Stroke: 21mm

• Practical RPM: 2,000 to 10,500

• Weight with Muffler: 15.7oz

• Muffler Thread Size: M10 x 0.75mm

• Crankshaft Thread Size: 1/4 - 28

• Recommend Propeller Size: 12 x 6 (Break-In)

*Requires glow plug, fuel, propeller and support equipment. We recommend using 15% ~ 20% Nitro Methane Fuel with 16% ~ 18% Castor Oil/Synthetic Oil Blend Lubricant. We recommend using a hot heat-range glow plug designed for 4-stroke engines, such as Thunderbolt HP, O.S. Type F or Fox Miracle Plug. Propeller size will vary based on many factors. We recommend a 12 x 6 propeller for break-in.

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Additional Information

SKU 210851
Manufacturer Magnum Engines
Mfr Part Number XL52RFS-BL
Video No

Customer Reviews

Very Satisfied and Impressed Review by Phalco
Rating
I've got this little engine running on a CMP Beaver which I converted from EP to glow power. The beaver has a 70" wingspan and lots of drag with struts and a big radial engine cowl. The Magnum 52 hauls the plane around in a very scale like fashion and sounds great. It starts easy and idles very reliably. I'll confess that I didn't follow the break-in procedure very closely and did most of the break-in, while in flight. The initial break-in was done on the ground with the engine mounted in the plane just to get the approximate needle settings. With an 8oz tank and running at 60-70% throttle this engine will run for approximately 20 minutes. (Posted on 5/14/14)
Good small plane motor Review by Terry B
Rating
I have had a Magnum 52 4stroke for years on a pete-n-poke plane and over 5 gallons of fuel through it. It is a good fit for a 40-2stroke replacement if you are looking for the 4 stroke sound. All though the motor is a little sensitive on the low end needle valve setting, it is not a hard motor to tune..,I use powermaster 15/18 fuel and 12X6 APC prop and it is a good reliable smooth idle engine.. (Run your idle mixture just a tick rich for best transition) I adjust the valves every gallon or when I think the RPM is down just a little.. These motors do not have a lot of compression when hot but start well with a starter and no problems at all on reliability! Buy one, you will like it.. If your plane is a little heavy, use a Magnum 70- 4 stroke but we have this 52 on a Great planes 40 size cub and it pulls it along at half throttle once we are at flying height.. Full throttle for take off and then cut back...
Good motor, good price. (Posted on 11/26/13)
Great engine Great price Great performance Cool sound Very dependable Review by The Gipper
Rating
I've been using one on a Phoenix Funstar .40 for about a year and I am very happy with the performance. The engine has been very reliable, and club members often ask me what engine I'm using after a flight. I intend to buy another one, and highly recommend this engine to anybody looking for a great 4-stroke engine, with great performance, at a great price.
(Posted on 2/15/13)
Magnum and Hobby People a Great Combination! Review by Widget
Rating
I was introduced to Magnum engines through the purchase of a very used 1.20 4 Stoke. I eventually had to rebuilt it with parts easily obtained from Hobby People, and even though it was my first time rebuilding an engine, I now have a 1.20 4 stroke that runs as good as new! Impressed, I then bought 3 Magnum 91 4 strokes and all have performed flawlessly right out of the box (with the recommended break-in of course!) And just today, I broke in my brand new Magnum 52 4 stroke, and like the rest, after a total of 45 minutes break-in time, it was ticking over at a very acceptable low idle, and was spinning the installed 11X8 APC prop at a max, steady ,10,000RPM! I could have spent an average of $200 more each on nicer looking, more popular brand named engines to impress the nay-sayers at the Flying Field, but I have found that the Magnum brand (and price!) fills all my power plant needs. I want to add that Hobby People customer service is the best and (Todd) is always right back in touch with me with the right answer whenever I ever have any technical questions. (Posted on 2/5/13)
A PAIN TO ADJUST Review by embirdman
Rating
This is my first "Blue Head" 52...I also own a Magnum 70 I fly in my Phoenix Dacathlon, and a Magnum 40 2 stroke I fly in my Dazzler. I have had good luck with the Magnums, inspite of hearing bad things about them out at the flying field. So when I saw the good deal offer on the 52, well I jumped on it.! ....I mounted the 52 in my 80" wing Cub and began breaking it in in my backyard...here is where the fun began....now I don`t profess to be an engine genius, but I have been an RC modeler for 40 some years, starting out with Cox .049`s on UC models. I have 14 Airplanes, all glow, one gas, and one micro electric F-86. I thought I was a decent engine guy, hand flipping all of my engines, using a chicken stick on the 4 strokers.... but when I tried to start the blue head 52, well, as I mentioned, this is where the fun began. after flipping and priming until my back hurt without even a pop...I figured out that the engine was not getting a spec of fuel during the prime...this is the reason the factory low speed is set at 3 turns, to help in priming but is way way too rich for idle. So I solved my priming problem by disconnecting the muffler pressure line and connecting a 5 " piece of fuel tubing to it and blowing fuel into the carb....this alowed me to get the engine started. I then ran the engine very rich per the manual, but don`t throttle back much because the 3 turns factory setting on the low end will cause the engine to quit at a fairly high RPM. The manual does not tell you this...which would of helped me. You must lean the low end ALOT..a full turn or more to get even close to proper idle mixture. When I leaned the low end, well, priming now..(holding your finger over the exhaust with the throttle full open) was just not even going to work....but my 5" piece of fuel tubing was the answer for this. Ok then, after the 45 min break-in and a fairly good idle was attained, It was first time to fly. Again, following the manual, it said to fly at the richest setting that would produce enough power to fly. Well, that just doesn`t work because when you enrichen the high speed needle it also enrichens the low speed end ALOT...will no longer idle (not even close)...! So after I figured this out I leaned the high speed needle to max power and enricend slightly and then puleed the throttle back to idle, and the reliable idle was alot better. So I adlusted the low speed end again and was ready to try to fly again. Away the Cub went, anxious to fly after that rediculous engine adjustment ordeal. The bottom line on this engine is...once you have set your high speed needle, don`t mess with it or you`ll screw up your idle. In fact, the last time I went to fly, the Cub again would not idle, so I simply ran it up to full poer and leaned the high end again to slightly leaner, and then throttled back to check the idle and it was ok....I taxied out to fly. I must say that now I seem to be able to start the Cub and fly it each time...the blue head is running smoothe and reliable...at least so far....Would I buy another Magnum....hmmm...?
My other 4 srokers are Saito`s and OS`s...Love all of my engines, even the blue head....! (which is definately female) (Posted on 12/25/12)
runs good Review by snake
Rating
I have 2 of these engines 1 is a 91 that I got on a edge 540 the other is a 52 that I bought at a swap meet for 15 dollars.Neither engine was running both looked new.After putting a new manifokd o ring and setting carb back to factory specs the 91 fired up.The idle was poor but a fox miracle plug cured that.Now it runs great.The 52 was pulling fuel in and pushing it back to the tank on compression.After checking the valves I went to the cam.The cam was out of time.The guy I bought it from said it had 4 flights on it and quit but I dont see how with a cam out of time After figureing out where the cam should be it ran near perfect.The 52 is a chinesse copy of the os 52 .I dont know about the 91 as I don`t have a os 91.I haven`t flown them yet but bench runing they seem great (Posted on 12/6/12)
GREAT RUNNING ENGINE Review by RMHJR
Rating
BEST ENGINE I'VE EVERY HAD ONLY PROBLEM I CAN THINK OF IS THE LOW END IS SET TO RICH, IT TAKES 1 -1/2 TURNS LEANER TO GET A GOOD IDLE, IN OUR CLUB WE HAVE 3 SLO-POKE, ALL WITH 51'S AND THEY ALL GREAT
HAPPY FLYING (Posted on 11/16/12)
GOOD ENGINE-GOOD POWER-GREAT VALUE Review by THE GIPPER
Rating
I recently purchased a Magnum XL52 and put it on a Phoenix Fun Star 40. Great power for this size model. To date I've got about 20 flights on the plane, and not one dead stick landing, or any other problem for that matter. It always starts easily, and I love the four stroke sound. Now that it's broken in the idle is so low and reliable that I can hardly believe it. Great engine!!!! (Posted on 10/31/12)
Great engine for price Review by Brentg
Rating
I have two blue heads and one older version and they all start and run without issues,just breakin per instructions and fly no fiddling with settings, never had a flame out cant say that for a few of my os and saito 4s's, these engines are without doubt the best value on the market, watch for Hooby people's sales events and you can get a new engine at below used prices of the other guys, i bought a 52-4s at the toledo show and a 91-fs online before the sale went off, dont get much better than this.. (Posted on 7/3/12)
Outstanding Review by Eagle
Rating
I have four of these engines; two pre-blue head and two blue heads. They are all equal in reliability and performance which is excellent. I'm using the two older versions in a home made twin and the two running together sound great. The newer blue heads are in an Escapade and a P-51 Mustang. I bought these on sale through HP and I can't say enough good things about these engines. They are just as smooth and reliable as any of the Saito and OS engines I use, and at half the cost. (Posted on 8/30/11)
Positive Review by rc Mike
Rating
I own two pre blue head magnums. Both run identically well! Power a DC-3 at 5280 feet ASL. It is way over powered, but throttle back if you want! I have never had a problem with the 5 Magnum engines I own. Very reliable! (Posted on 8/15/11)
Positive Review by rc Mike
Rating
I own two pre blue head magnums. Both run identically well! Power a DC-3 at 5280 feet ASL. It is way over powered, but throttle back if you want! I have never had a problem with the 5 Magnum engines I own. Very reliable! (Posted on 8/15/11)
just great Review by high flyer
Rating
have a 52 ina sky raider 2 also a 61 in a sky raider 2 with a 1600mm wing span i changed myself bpth fly well and the engines both have had about 20/30 lts throught them with not one bit of trouble would buy another any day (Posted on 7/9/11)
Worth every $ Review by The POPE
Rating
I had my 52 fs on an Aresta 40. It ran great and idled even better for a long time. My 52 seemed a little under powered, but flew the Aresta ok. It never quit in flight. I could not hand start it because of the low compression. I have now bought a new Saito 56 to replace it with. I got a bargan on it or I would have bought a new Mag. 52. I loved my engine. What a deal.

RP 31751 (Posted on 6/29/11)
Just keeps on going Review by Giant
Rating
I've had this engine for a year and a half and I am on my tenth gallon of fuel. Thats close to 30 hours of runing. Its in a avistar doing duty as a club trainer. It has been crashed many times and keeps on going without problems. Great engine at a great price. (Posted on 5/14/11)
FABULOUS! Review by Irapylut
Rating
I now have 4 of these jewels! One is my Orange "BLUE MAX" from many years ago. It still purrs like a Singer Sewing Machine. It never misses a beat. Super buy when on sale. I think if you would just look at it, it would start!! I have a BLUE... BLUE MAX still in the box and it will get one of my new ones. (Posted on 12/13/10)
Great engine Review by bigun
Rating
Just ordered my 3rd. These engines are truly worth way more then the cost. Way to go Hobby People (Posted on 12/9/10)
value packed Review by aerofly
Rating
Great engine! I picked up 2 for my dc3. They run great. (Posted on 10/24/10)
Magnum 52 4 stroke Review by Terry B
Rating
BUY IT ! ! !Best hobby dollars I ever spent. I am working on my 4th gallon and 5 years on this motor and it is still just like new. I have adjusted the valves and the power loss comes right back ... check valves every gallon of run time.... Great motor. (Posted on 10/2/10)
Indestructable engine Review by chillybee
Rating
I've run this .52 since 2001 and it's been the most reliable engine I've ever owned. Talk about a workhorse! This thing has been in my Avistar and with the exception of changing plugs, has never required any maintenance. It's been started in 25 degrees, used to tow up gliders, taken up cameras and has never once quit. I can't remember how many years ago I adjusted the needle valve. And it idles better than my satio .56 which is also a great engine...but more expensive. So in my opinion, you can't beat this engine's reliability for the price! (Posted on 9/23/10)
You simply can not beat this engine. Review by Capt. Al
Rating
I go to the field and hear all the b.s. about how the y.s. and o.s etc. have much more power but if you just want to fly and have no head aches, fly with these engines and you will be a happy camper. Do the break in as per instructions and leave the low adjustment alone......Run rich for the first gal. or two and set it and forget it....If she is pushing smoke your o.k. I have the .30 .52 .91 and the .70 all run great... I also have a o.s. 200 fs nice but the 180 would probably do just as well Keep up the the good work Magnum. Can anyone tell me why U>S>A> cannot build this stuff anymore? Have we all stooped so low as to buy into cheap labor and forget about our own economy????????????? (Posted on 9/20/10)
I should have bought 3 Review by hawss
Rating
My review is just like the rest of the reviews here. Picked up one when they were on sale back in the spring. I should have bought another two engines. Runs great Installed in a 40 size cub. (Posted on 9/18/10)
Used in Rascal Review by Mecosta
Rating
I have this engine in my Sig Rascal and it provides plenty of power. The only problem I'm experiencing is with the low speed needle valve. It keeps coming loose and if I don't reset it after every flight it will actually come out. Fortunately the Rascal encloses the engine so tightly the the needle valve cannot come out completely. (Posted on 9/16/10)
Best 4 stroke I own. Review by Rich
Rating
I own an os .91 fs and a saito .91 neither run as good as my Magnum .52rfs.Easy to start,perfect idle,smooth transition. Can´t say enough good things about this engine.I just ordered a Magnum .91rfs. hope it runs as good as my .52
Break it in with Castor oil and you will have a GREAT ENGINE. (Posted on 8/31/10)
Best 4 stroke engine I own Review by Rick
Rating
I currently have two of these that I have been using for more than a year now. They are without a doubt the easiest starting and most consistent running engines I have ever had. Great performance and a super value. Thanks Magnum for such a fine product. (Posted on 8/31/10)
best four stroke ever Review by Darren
Rating
his engine is awesome set it and forget it great for low wing forty size aerobatic planes with a 12/6 prop unbelievable excellent value to fun price (Posted on 8/31/10)
MAGNUM 52 FOURSTROKER Review by john
Rating
THIS ENGINE IS FITTED TO MY SIG FOUR STAR 40 AND PERFORMS WELL. THE ONLY NEGATIVE IS THE CARB LOCATION WHICH MAKES THE THROTTLE LINK HARD TO ADAPT AND THE AFTER RUN OIL HARD TO APPLY. THEY NEED TO REVERSE THE CARB SO THE INTAKE IS ON TOP. OTHER THAN THAT THIS ENGINE HAS ALOT OF BALLS. (Posted on 8/30/10)
Great engine Review by Sterling
Rating
I originally purchased this engine over eight years ago for a Kyosho PT-19. I had barely broken it in when I put the airplane with engine in a storage closet when my job demands kept me from flying. This past year I took it out of storage and began flying it regulariy with much satisfaction. It is one of the easiest, smoothest running 4 strokes I have ever owned. It always starts right up, idles great and hauls the PT-19 around with ease. I sold the PT-19 the other day but have already purchased another XL52 RFS for some future project. After the initial static break in it took about a dozen flights before it became the silky smooth engine it is now. Treat it right and enjoy for a long, long time. (Posted on 8/30/10)
I now have 4 of them... Review by Paul
Rating
Yep, 4 !! I love these engines. Perfect for the 40 size planes. Very easy to start and tune. They run like "a Singer Sewing Machine", just purr along. Relatively quiet and realistic sound. The only drawback I can find is the throttle lever is located in the middle of the rear of the engine. Ok if you don´t have GAS TANK behind the fire wall! It takes some creative linkage. Why not sell an after market carb manifold to move the carb over to one side???? Then you could have your engine and your gas too! (Posted on 8/30/10)
great little engine Review by Terry
Rating
I have this engine in a 1/6 scale Clipped Wing Cub and it is perfect. I bought it early this year and have flown it a lot. It starts very easy and runs like a top. I have not had to re-tune it at all sence the first flight. I liked it so much that i bought another one and i will be buying more in the future. Give it a try, you will be very pleased with it. From Alpena Arkansas (Posted on 8/24/10)
great power Review by flyer 2010
Rating
been flying 52 since january. flies as good as my os at 1/2 the price. i am going to get a 91 to put into my ryan. great engine. (Posted on 8/24/10)
Awesome Engine Review by Kevin
Rating
This is an awesome engine which produces great power. I own 3 of these babies. I have 2 of them on my Hanger 9 B-25 "Mitch the Witch" and the perform flawlessly. I also have one hanging from a Great Planes Escapade and it too is a great performer. I own two other Magnums and think they are one of the best performing engines for the value. Hobby People routinely has Magnums Engines on sale, and in these hard times is the only way to go. Several other hobbyist in our flying club are now switching over to Magnums after seeing mine in action.

Keep up the great work Hobby People! (Posted on 8/18/10)

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