Pa-18cub150

I have an older .36 pro I bought used. After replacing the bearings it’s given me 20+ trouble free flights on a SPAD.

So last week when the opportunity to buy a NIB old stock (No remote needle valve) XLS 46a at a discounted price I jumped on it. I was all exited until I realized that there was not an instruction sheet in English only one Chinese.

I looked on the Magnum website in hopes of finding an English version possibly in a PDF format. No dice.

My old pro came with an English instruction sheet so I would assume that there would be an English version for the XLS. Dos any one know where can I find one?

I don’t like to deviate from manufactures brake in procedures and from my pro I learned that the carb adjustment can be a little ticklish and the carb on the XL is different so English instructions would be helpful

w8ye

My Feedback: (16)

Here's your XLS46 manual in English....

http://media.hobbypeople.net/manual/210756.pdf

Pa-18cub150

Thanks that’s what I was looking for. I hope that the XL will be as god a motor as the pro has been

w8ye

My Feedback: (16)

There is also an older Magnum XL46 engine type floating around on peoples shelves.

It is a copy of the older OS 46SF series engine and has a round head.

The XLS 46 is a copy of the OS 46FX and has a squarish head.

Flyboy Dave

My Feedback: (21)

The older series was the Magnum XL's and they were great engines. These
had the front needle only carbs.

FBD.

WMB

My Feedback: (1)

Ute, This may be a little too late. I've got about 90 flights on a Magnum 15. I recently pulled it out of a Shrike for maintanence. I've been running 30% heli fuel and 8x4 apc. If it is above ~ 55 degrees, it starts first flip everytime. Otherwise I need the electric starter. The main needle is super sensitive and needed to be sealed with tubing otherwise it wouldn't stop with the throttle stick.
It gets 10 minutes on 3oz at full throttle. Idle and transition are both excellent. It is a dial it in and run it engine for me. I hate having to fiddle with them all the time to make run acceptable.
Works for me, MikeB

William Robison

My Feedback: (3)

All:

The first picture is my oldest Magnum. It’s one of the TT built engines, an FP 25 in a Goldberg Eaglet. I really don’t know how old it is, I got it used, still runs like a top. Note the discoloration of the decals – shows its age.

The second picture, the twin I call the C-3/10, has the Magnum XL 46 engines, about 13 years old, still look, feel, and run like new.

Last picture is the XLS 40 engine in my RCM 40 trainer, you can see the effects of an unplanned landing from an inverted high speed pass. I straightened the crank and it ran like it was still new. And still does. But after all, it’s only five years old.

Bill.

loughbd

Actually it's a Magnum GP 25 not an FP. OS makes the FP. They were the very first Magnum engines that Hobby Shack imported and sold. It came out in 1988. They weren't bad engines. Definitely better than the Thunder Tiger 25 it replaced. I got one of the first and was allowed to test it to destruction. I ran a 7x4 prop and 40% nitro in it. Ran it for 45 minutes and then took it apart. Was still in good condition considering what I did to it. I gave to one of the employees and he flew it for about a year until it ended up in the San Diego River. The very first magnum sold in the San Diego store was a 25GP. The magnum 25 came in two versions. One was the plain bearing GP and the other was the ball bearing Pro.

I still have a Magnum 44GP with a homemade venturi I use in a control line airplane.

HangarRash

loughbd-

Are you sure it was 1988? While in the military I bought a Magnum .25 at Hobby Shack
in 1986. Powered a Pilot QB 25 trainer that I picked up the same day.

William Robison

My Feedback: (3)

Bruce:

You’re right. It is a GP 25, not FP. It’s also the engine I did my first intake stack experiments on. See picture. The stack is still on it.

And it's still an excellent engine.

Bill.

William Robison

My Feedback: (3)

HRash:

More likely 1978 than 1988, in my opinion. I got the plane and engine used around 1990, and the decals were already discolored then.

Bill.

loughbd

I didn't start working for Hobby Shack until 1985. There was no way a Magnum was made in 1978. We were still selling Thunder Tiger then. I remember distinctly when Magnum first came out. I told John Greenshields that I was getting tired of people threatening to shove TT engines down my throat or other places I didn't want them. When the first Magnums came out I asked if I could have one to see what the quality was like. That was the one I tried to destroy by running it on high nitro and a little prop. I am holding our Spring 1988 catalog in my hot little hand right now. It has the first big ad for Magnum engines in it. It came out in Feb 1988. I can dig out some of my older catalogs and see when we first started selling Magnum but I know it was in the late 80's. No earlier than 87.

Rash you may have purchased a Magnum engine in late 87 but I don't think any earlier. Where were you stationed. The main store was in Fountain Valley and they got everything first. We were in San Diego. I was Active Navy when I first started working at H Shack. I was a Chief and actually worked my first day in uniform.

The only Pilot 20/25 sized models in the 88 catalog are the QB20L, QB20S and QB20H. I have the 20 L myself.

Magnum is a Global (hobby people) Copyrighted Trademark name and can only be used with their permission. The engines were first produced by Thunder Tiger in Taiwan until Paul Bender had a falling out with that company. He then went to China and had the same company that made ASP make his Magnum brand engine. That was after I moved to the Seatle area early in 1991. They also make several other brands but only Global sells magnum.

Anyway, The first magnums were Head and Shoulders above Thunder Tiger in quality. Here's a little aside. The Thunder Tiger Company that originally made our Magnums is now selling engines as Thunder Tiger.

Now my curiosity is aroused. I'm going up into my attic and find those old catalogs. Stay tuned.

HangarRash

loughbd, I was stationed at Ft. Irwin - out in the desert about 31 miles from Barstow. But I left there in December
of 1987, and I had purchased the Pilot QB, Magnum .25, and a Futaba Conquest 6 radio long before that. I remember
building that kit in the barracks! I flew it out on a dry lake bed with the Calico Ghost Town in the distance, it was
probably around August or September 1986. The Magnum ran nicely, even with only a couple of break-in runs.
My QB was the 20H, but I put the .25 in it. Currently I have a .25 XL, .40 XLS, and a .61 RFS.

loughbd

Hi Rash,

It may have well been as early as 1986 but no earlier. Like I said, I started working at Hobby Shack in 1985 and we were still selling under the Thunder Tiger name. Magnum hadn't been thought up yet.

I know it wasn't 1978. I hadn't even been stationed in Japan yet. That didn't happen until 1979 and I didn't get back until 1983. Hired at H Shack while stationed in San Diego in 1985. Still looking for old H Shack catalogs to see the exact date.

Later in the day

Just came down from the attic. Have a whole load of RCM's from 1986 and 1987.

The last Hobby Shack ad for Thunder Tiger engines was in the September 1986 issue of RCM. The first Hobby Shack ad for the new Magnum line was for the 21GP and 25GP and that was the January 1987 issue of RCM.

It was fun looking at all those magazines. Especially the prices for Japanese stuff. The Magnum 21 sold for $37.99 and the 25 for $39.99. I saw what the company paid for them when we did inventory that year. They were around $14.00.

Now I have to go back through all these old magazines and find the engine reviews for all the OS engine starting in 1978. Actually fun to do.

Bruce Loughridge
AMA13797 since 1956

RCVFR

My Feedback: (7)

I recently bought a new Magnum 46XLS and have just completed the break in, using 10% Omega (castor). If you do get a copy of the manual, temper the instruction to run it so rich on break in. They talk about running at over 2 turns open on the high needle with " plenty of white smoke', and this is too rich to run at the temp needed to mate the piston/cylinder, in my opinion. Sure, break it in rich, but allow it to get to temperature. The instructions also give good advice as to running it for a 5 min run and then let it cool for 10 minutes. This temperature conditioning is important. The 10X6 prop recommended for break in lets the engine crank without a lot of load. Mine was at 14,000rpm by the 5th 5 minute run. I use the pinch test to make sure I am running it rich - at WOT, I pinch the fuel line momentarily and get an RPM surge. If no surge, it's not rich enough, open the needle.

IronCross

Anyone got any experiance with the new Mag 180 4s yet ?... Thinking of one for a BUSA bipe...

philfun

My Feedback: (58)

Is the 180 4 stroke is suitable for 3D? I am concerned about linear transition from idle to max.

Let us know

Phil

Pa-18cub150

Hi Jim thanks for the advice I added your advice to the instructions from w8ye.

RCVFR

My Feedback: (7)

I mounted the 46 XLS in a Hangar 9 Pulse XT, and man, that thing is overpowered! Running an APC 11.5X4 prop, half throttle is all that is needed for takeoff, climb out and manuevering. Full throttle is for straight up vertical, and lots of it! The plane is relatively light and "slippery" and I am surprised at the speed it gets at half throttle on a "4" pitch prop. After bench running for about 30 minutes of run time over 6 runs, the break in continued on the plane, except now I am using 15% cool power instead of 10% Omega. Not only is the top end most impresive, but the idle is settling down to an unbelievable low rpm. I set it up for a 2200 rpm idle, and when I went to shut it down, it was still running at 1500 rpm! I t blows my whole concept of engine set up. I have not had a lot of engines that would idle that low! I put 4 flights on it today, each flight, the engine ran in better than the flight before.

I am a happy camper!

lee101

may i know what the best prop for the magnum 30 4 stroke?

loughbd

I would start with what the instructions recommend. Different airplanes need different propellers.

asmund

lee101. 9-6, 10-5, 10-6, 11-4. If the engine is new , run it in on the 9-6

loughbd

A 9x6 is a bit small for a 30 four cycle engine. That's what one one use on a 25 TWO cycle. I'd use at least a 10x6 or an 11x5

loughbd

A 9x6 is a bit small for a 30 four cycle engine. That's what one would use on a 25 TWO cycle. I'd use at least a 10x6 or an 11x5. I run a 10x6 on my OS26 and it turns about 9300 rpm.

lee101

thanks me running on 10x6 master air screw but lack in power