|User's Guide (913.1 KB)||This is the User's Guide for the Magnum XL .70RFS Engine|
Magnum XL .70RFS
R/C 4-Stroke Engine
This is a Magnum XL .70RFS R/C 4-Stroke Engine. The XL .70RFS 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!
• Ringed Piston Design for Long Life and High Power
• Aluminum Piston, Iron Ring and Steel Sleeve
• Rear-Updraft, Dual Needle Carburetor
• Crankcase Gas Recirculating System - Improved Lubrication and Cleaner Model!
• Choke Valve and Lever
• High-Flow Quiet Muffler
• Dual Ball Bearing-Supported Crankshaft and Camshaft
• Dual Bushing-Supported Connecting Rod
• Blue Rocker Valve Cover
• Safety Propeller Nut
• Displacement: 11.5cc
• Bore: 25.8mm
• Stroke: 22mm
• Practical RPM: 1,800 to 11,000
• Weight with Muffler: 21.2oz
• Muffler Thread Size: M11 x 0.75mm
• Crankshaft Thread Size: 5/16 - 24
• Recommend Propeller Size: 13 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 13 x 6 propeller for break-in.
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|Mfr Part Number||XL70RFS-BL|
- packs a punch Review by Gary
- Incredible engine! Review by WayneDiZi
One comment was about the idle, which I too had problems, which were all mine as all I had to do was lean the idle mixture quite a bit from the factory setting and voila, perfect start and idle, litterally every single time.
Bravo Hobby People! Love all the Magnums, especially this one!! (Posted on 8/30/12)
- Good pwer, bad idel Review by Fly Boy
- for bob and those having glo plug issues... mine does not have these issues.... Review by David
Just a thought and maybe a solution?
Good luck with it. Other than this I just recommend trying a different fuel mfg or ratio of nitro. (Posted on 2/24/12)
- Nice Engine... But glow plug issue as other reviewer Review by Chuck
- ENGINE HEAD COVER WAS INSTALLED BACKWARDS FROM FACORTY Review by JIM
WHEN I BOUGHT MY FIRST MAGNUM BLUE HEAD FOR MY ZLIN,MY FRIEND ALSO ASKED ME TO ORDER ONE FOR HIM.
JUST 2-3 DAYS AGO I ORDERED ANOTHER.
MY FRIEND SAID HE STILL HAD THE NEW ONE IN THE BOX AND ASKED IT I WANTED ANOTHER,SO I WENT TO LOOK AT IT AND NOTICED THE THERE 2 CRACKS IN THE FRONT OF THE VALVE COVER,IT WAS ON BACKWARDS FROM THE FACTORY,I ASSUME THEY ASSEMBLE THEM AND THEN TURN THEM OVER BEFORE THEY BOX THEM BECAUSE YOU CAN SEE THE METAL CONTACT,WHICH HIT THE COVER AND CRACKED IT .!
I AM A RETURNING CUSTOMER AND WILL TAKE PICTURES OF THE VALVE COVER AND RETURN IT IF YOU WISH.
THE ENGINE HAS NEVER BEEN RUN,THERE IS NO FUEL RESIDUE ON THE INSIDE OF THE COVER.
I WOULD LIKE A NEW VALVE COVER TO REPLACE THE ONE THAT WAS INSTALLED BACKWARDS.
AND THE ONE I PUT IN MY ZLIN RUNS FINE,NO COMPLAINTS,NICE ENGINES,JUST ONE OF THESE OVER SITES AT THE FACTORY./
I WOULD APPRECIATE YOUR REPLY
936 S.KIMBREL AVE
PANAMA CITY FL. 32404
MERRY CHRISTMAS (Posted on 12/24/11)
- Love this engine! Review by Daddyo57
- Going Through Glow Plugs Review by Bob AMA # 80941
- Best Value on the market ! Review by Rick
- Tune that 4S Review by Ken
(Posted on 8/30/10)
- Great running engine Review by Jim
- Magnum XL.70-RFS engine review Review by rothe
- Ultimate Power Review by Bob
The Magnum .52 ( now nine years old and still running great with no repairs and no adjustments ever needed )is now being used in my 52" wing span Decathlon to this day, so I had to find another engine, so I purchased the Magnum .60 RFS last year to fill its needs.
The Magnum .60 engine preforms great, but the Ole Biplane is still a little under powered. So first of this year a fellow flyer gave me his Global Ultimate he purchased last year luckily, since they have been discontinued now several years.
So now I have two Global Ultimates and I purchased the Magnum .70 RFS to fit into the Second Bipe. After a few tanks of fuel and few tweaks to the carb, she is flying the Ultimate proud, lots of power for the size of the aircraft. The Magnum .70 RFS should have been the first engine in this airplane along time ago, the performance of this aircraft now is overwhelming, 3D flying is at hand.
Power, response, and trust has been establish again in the Magnum line of engines. But to give the others their due, they may have the power curve over Magnum engines, engine size to engine size, but as far as I have seen, that is about all. (Posted on 8/30/10)
- Crow is best served as a left over Review by Dave
My first "review" of this product was 3 nights ago. At that time, I had spent probably more than an hour and a half in "run time" attempting to get my Magnum 70 engine to perform. It didn´t want to turn any more than 9,000 rpms with a 12X6 prop, and the idle was no lower than about 3,400.
The morning after I posted the first "review", I had an email waiting on me from Global/Magnum support, as HobbyPeople had forwarded a copy of my "review" to them. Needless to say, I was quite shocked, and quite frankly I didn´t think that HobbyPeople would even publish my "review" of the Magnum 70. I was very surprised to find they did. That in itself speaks VOLUMES for HobbyPeople; I can´t remember the last time I read a negative review on either a retailers website much less a trade magazine. Can you?
Global/Magnum support was extremely concerned with my experience with their product, and wanted a chance to "make things right" as a result. We discussed the symptoms and I even sent them some photos of what was happening with this particular engine. Without a doubt, Global/Magnum wanted 2 issues to be resolved; 1) getting a replacement engine in my hands and 2) getting the "problem" engine in their hands as a matter of product developement.
I was given the opportunity to have a UPS "call tag" sent to me, and all I needed to do was box the engine up and send it to them. Having bought the engine at the local hobby shop, and knowing when I bought it that the owner of the shop had purchased more than one, I proposed a "reasonable" resolution of me simply returning my engine to the hobby shop for an exchange of another one, and the hobby shop could send the "problem" engine back to Magnum/Global.
This morning I got a call from the local hobby shop telling me they were holding a Magnum 70 engine for me, and to bring the "problem" engine in for a swap. Global/Magnum had contacted them and worked out the details, and as of this afternoon I have a Magnum 70 installed on my Sig Somethin´ Extra that runs MUCH much better than the first one. I think this one is going to perform up to spec.
So what is the moral of the story? I guess in just about any industry, their can be a "quality control" slip up that can happen. How often it happens will make or break a product. The fact that Global/Magnum was very surprised to see my initial "review" which lead to a more than timely resolution suggests to me that A) this doesn´t happen often, and B) if and when it does, they are on top of things with their support of the product.
Ok, last bite of crow going down. That being said, I would definitely purchase another Magnum engine in the future, without hesitation.
Dave, AMA 55707 (Posted on 8/30/10)
- Magnum 70 operation Review by David