Magnum RC

Hello all, I finally got some pictures of the maiden flight and subsequent flights when I attended the west coast's Warbirds Over the Pacific in mid I-5 corridor called Cottage Grove OR. They had camping and a park like airfield, it was great. Lots and LOT's of great Warbirds. The only ones that didn't show up are the Axis lol... Well, one Japanese Zero joined the fray. Here are my pics, please enjoy. The flared landing photo was the picture taken from my previous post's description of the landing to protect that $300 solo prop.... As soon as the down/locked wheel touched the grass, I kickedleft rudder to put pressure on that leg so it would pivot, thus keeping the high wing in the air until the prop stopped spinning. It was all a genuine balancing act and was successful in saving the propeller.

MSC

My Feedback: (5)

Wow Magnum..... What great flying.... I did the same thing last week with my P-51 but did not get the motor shut off soon enough to not strick the break the darn thing..... Great looking bird. Still working on mine but is slow due to work and other commitments.....

MC

stpow

Greg, sorry to be a bother if this question has been asked already, but I'm working on the ESM Corsair 50cc. I wished that I can answer your question on the gear door, but I haven't got there yet. But it appears that the ring slides on the strut. I have the gear set that ESM offers, since I bought everything together for a bargain price. I noticed in your photo of the gear door that the retract unit sets in the wing deep enough to allow the covering to fit flush with the wing. What did you do to achieve this? Mine sets too high and causes a bulg at the LE. I tried taking a 1/8th ply off the mounting area to allow the unit to set inside deeper but that allowed the ball actuator for the rotation to hit the upper portion of the wing, so I'm back to square one again. I'm also building the Top-flite Giant scale Corsair, and having the same problem with the recommended Robarts being too high at the LE. I need HELP!!!! Stan.

MSC

My Feedback: (5)

I am also tying to figure out the EMS gear air lines and how most of you ran them. It appears that the lines will not fit through the exhisting cutouts in the wing but will need to be cut out to allow them to move without getting bent at 90 degree. Also the rear set up looks like I will also have to cut out the rear area where the wing tube goes. looks like it is going to be a tight fit. What and how did you guys have to route the lines?
Thanks
MC

MSC

My Feedback: (5)

Mine does the same thing. I spoke with ARF Pros about this and they told me that the manufacturers decided not to supply covers for the gear. So, on mine I am going to have to make fiberglass covers. On an earlier post you will see one of the members who made them... Might be your only option.....
Good luck
MC

Growler84

My Feedback: (8)

Stan, sometimes I need the obvious pointed out to me. Thanks for cueing me into the fact that the gear door mounts are meant to slide on the strut. This along with me finding the supplied linkages will allow me to complete the door setup once I finish the fuselage and circle back to the wing.

Regarding the gear fit on the leading edge of the wing. I took the retract units apart and ground down the front corners of the mounts on a bench grinder to shape them to the wing. As we have all noticed, the mounts are plenty thick enough so even after shaping there is still plenty of material left over. Now that I think about it, I started with the bench grinder but quickly grew tired over how long it was taking (not to mention the heat it generated) so I chucked the pieces in a vice and attacked them with a large metal file. This method was both quicker and more accurate for my purposes. With your Robart retracts you won't have this option because the mount material is thinner steel verses the thicker Chinaluminum used on the ESM gear. Since you are building the Top Flite (good on ya) and its not a Scale Masters airplane, maybe you can add wood to the leading edge of the wing and blend it into the oil cooler area (and back onto the wing) on the inboard side of the wing. On the outboard blend the "bump" in very gradually over maybe 10 inches of the leading edge (and again back into the wing). We are not talking a lot here, you don't want to disturb the airfoil characteristics too much. Thicken just the bottom of the wing leading edge a bit to cover the gear better. Good luck.

n6iap

Greg,

Thank you for the note about grinding the gear frame. I thought mine was somehow built wrong and why I had to do all the modes for the gear. Assembly continues but is slow, because there are too many other requirements from home and job.

jimm

kwik

Great stuff, Magnum!

Had some fun by placing a cheap Sony Ericsson mobile phone in the cockpit;

http://www.youtube.com/watch?v=CjS9MpPwGLI

Magnum RC

Well, I always wanted to know what it was like to ride in one of these models..... now I know.. that was also good stuff. Just wanted to mention that Arf Pros did me a solid by exchanging my landing gear without any questions. Great customer support as far as I am concerned. Patrick is a stand up guy. That is one of the things that the American modeler looks for in a company, and what drives the business here at Magnum RC is just that. The customer service is key to repeat business.

stpow

Greg, Thanks for the respose on the retract bulging at the LE on the 50CC, ESM Corsair. The thought had entered my mine already about grinding down the front portion but I waited to here from you to see if that was what you did. Thanks again I appreciate people like yourself that take the time to respond to other builder,s problems. Stan.

kwik

The Robart already has a 45 deg "grinding" up front, in order to get it as far upfront as possible.

However, it does not have the little "bend" on the leg, which it should have down by the wheel axle.

So it looks like I will have the same problem. I might just grind away a small portion of the doors.[:'(]

It might be the bottom of the leg that protrudes a bit, just around the wheel axle area, not the wheels themselves.

Another possibility is to just mold a small bulge on the doors. Havent gotten to the doors yet, though.

Still having fun with sliding canopy, gun sight, mirrors on the canopy, and such things.

It is a LOT of work getting a sliding canopy to work properly. But it is fun. So even though it is an ARF, it is still lots of work, and lots of fun.

In the cockpit video above it was quite windy, so I got the shakes during landing,

That is fun, at least afterwards. So you can get the shakes with an ARF too!

You can also see that it waggles the tail.

If anyone is interested; My take on sliding canopy and front wheel-door sliding;

Using Barry's rails on both places. For the wheel-door; A Sierra collar with one screw sliding in the rail. (not scale, but it is simple, and it works! )

kwik

A couple of pictures from todays flying. Flight no 13 and 14.

The ESM 50cc Corsair together with the ESM 50cc P-40 Warhawk.

The Corsair spinner is from YT International. The propeller is a 22x10 Menz Standard.

That Warhawk nose is BIG.

stoat

Nice! Have you flown the P-40? If so how do the 2 compare?

Shame ESM haven't released a scale spinner for the P-40. Looks like a mustang spinner.

kwik

The Warhawk is owned by a friend of mine. It has a ZDZ 50. It is very fast. Faster than the Corsair.

He is using a Krumscheid spinner.

A fantastic plane. (Another hit from ESM.)

Here ; (The engine was running too rich here, so he barely got up. Running leaner now. A totally diiferent result)

http://www.youtube.com/watch?v=qI_U1tmFDTI

kwik

A picture of the 50cc Corsair. The little thingy in front of the windshield is a HD camera.

It has 18 flights now.

Magnum RC

Just wanted to post a pic or two of the Corsair with it's cowl on. Arf Pros swapped out the defective landing gear and I am much happier now. The gear has cycled consistently on every landing. The big Saito has been a powerhouse surprise. It is swinging a 3 bladed 22" propeller that I can vary the pitch on. I broke the engine in with a "6" pitch and have increased it to "8" after a gallon of fuel went through it. The engine seems it has doubled in horsepower after it breaks in. The RPM has come up 2,000 RPM and climbing. The airplane already is moving faster than I expected. One must be ahead of this plane all the time at full throttle, it was clocked approaching 100 MPH. The Keleo Scale exhaust ring gives a sound like no other. My money spent on this engine is paying off, nothing like a big radial. The only drawback is my last flying weekend with this plane and an F7F KMP Tigercat was a 3 gallons of fuel weekend.... it was worth it though. My F7F burns 1 quart every six minutes, much like it's full size counterpart which costs $6000 an hr. to operate.

kwik

Hey Magnum, it looks nice! But 2000 rpm on a 22x8 ? That isnt much? Must be something Iam misunderstanding?

Mine (2 blade) 22x10 is doing 6100rpm?

So do you have an up front photo so we could see that radial in the cowling? Must be a nice sight.

Magnum RC

NO,, no,, not just 2000 RPM, When I first started the engine, it ran a 22" 3 bladed prop 5500... After a gal and some ran thru the engine, it is now running excess of 7000 and climbing. The engine just gets more powerful the more I run it. Hmmm, let's see, a pic in the cowl, ah here you go, it is snug as a bug but you can put a business card between the top of the cylinder and the cowl. Took a bit to align it up thanks to my good friend Kelvin Cubbison of Keleo Creations. He set it up and built a scale operational exhaust that sounds great!

ya33a

Hi,
Saw the early shots of the setup of the exhaust an ply mount, love the fit of the engine, I've bought a 325R5, which wouldn't be a bad fit for this plane either, got a Keleo exhaust ring that goes to a single outlet, would love a scale collector to fit this plane too, I doubt that the price wouldn't be too different to the one I've got, even with the extra work needed to make up the multi ejector exhaust. I can't see myself fitting the Saito exhuast a the sound would be strange with 5 separate pipes. Is it possible to upload a video of the engine running so we can hear how the exhaust sounds? Should be a sweet sound...

Magnum RC

I don't have a video as yet, but I intend to make one up soon... the moment I have it I will post it. Yes, the best part of the engine operation is when I taxi back to the pitts and lower the throttle so it just lopes and you can see the blades as it turns... There are many power plants out there that would fly this plane. The radial engines put the experience over the top. Maybe one of these days an RCS 250cc gas radial might be in the hangar....

nudger

Hi
Good work Magnum, cant beat that radial sound,and nice to know shes a good flyer.Not been working on my bird much but what i have done as been on the scaleish cockpit...heres a few pics of slow progress

Cheers nudge

stoat

Nice work! Do you have a pilot yet?

nudger

Thanks Stoat
Yes hes one from" best pilots "

nudger

Sorry pics didnt load....

MSC

My Feedback: (5)

Absolutely beautiful work Nudger.... Gotten motivated to get mine going again. It's taking longer than anticipated mostly due to work.... Appreciate all of the pics....
MC