RE: CMP BF109F BUILDING THREAD
 

My CMP Bf109 came in today. I will be stripping the wing & tail covering and sanding down the fuse. The totally unrealistic paint job put that nail in the coffin. I'll have to keep my eyes open for the issues with the spinner back plate.

Can anyone let me know the estimated AUW of this plane? I have some retracts (Not the best, but they will work)...

I'll be going with

http://sebastianrust.name/grazer/galland_bf109f.jpg

or:

http://www.markstyling.com/bf109fs/Bf.109.F.20.jpg

RE: CMP BF109F BUILDING THREAD
 

Scalecraft, congratulations ! Also, good report . I want to thank you too for printing out those wing ribs to replace the mounts for the gear, I bought the Sierra's for the Kondor model and have them installed, well almost !:) I plan on using a Saito 1.50 4 stroke and from what your saying it should be ok, I hope .

RE: CMP BF109F BUILDING THREAD
 

The pic shows the CG location and fuse position I like to see when I CG a model. Its pretty close to CMPs location.

rchorn, no problem. The 108 flies it very well. I do have a 160, but I configure a 3 blade for that just to try it maybe.

Steve

RE: CMP BF109F BUILDING THREAD
 

a pic of the 108 office, bought it used around 12 years ago and it started on a back flip, 1st time. And stayed on!

Steve

RE: CMP BF109F BUILDING THREAD
 

Good to know about the 1.08 I have two or three of them laying around, I was going to put a Moki 1.80 in it...

RE: CMP BF109F BUILDING THREAD
 

Evil Merlin- "Totally Unrealistic"? I agree, it is not a perfect paint scheme by a long shot, but it is not that far off. Ok, the crosses on the wings are pathetic (changed them), the number on the fuse is the wrong color yellow, but I have seen many profiles not too far off from the scheme the plane comes with (even though the actual plane did not likely exist). I had intentions to repaint this plane when I got it, but I thought it looked pretty good and could not justify all that work. If your after an excellent scale model there are other problems you will face besides a scheme that is questionable. The wheels will look too small no matter what you do, The exhaust stacks are a bit large, and the scoops and some of the molded in details are from a G model, while the canopy is from an F. Even If I wanted to repaint it, I would just paint over the stock paint and coat the final product with Polyurethane. I have done so with a few CMP planes with excellent results.

I would not be afraid to take the plane to any fun scale meet and will have no fear of someone calling it "totally unrealistic."

RE: CMP BF109F BUILDING THREAD
 

I agree its out of scale a bit, but for $300.00, its a hell of a start. You basically start at the fun part. No rules say you can't change what you don't like.

Note that the headers are not only a bit big, they are the wrong shape and too high, which in turn put the cowl scoops too high. The engine was mounted inverted on the 109.

Anyway, I still like it a lot. And its forgiving on take off and landing.


Steve

RE: CMP BF109F BUILDING THREAD
 

Scalecraft,

Congratulations and thank you for that very nice report! Now I am beginning to look forward to, rather than worry about, the first flight. An OS 160FX is somewhere on it's way to my mailbox.

A couple of questions:

Could you tell the thickness of the aluminium spinner backplate? The outer area as well as the area that meets the engine thrust washer?

Is the motor mount plate strong enough in your opinion?

Thanks,
Helge.

RE: CMP BF109F BUILDING THREAD
 

Todd, its far enough off for me... and thats quite a bit in my book.

But that being said, the build quality is fairly decent. I'll do some firewall and engine mount reinforcement.

RE: CMP BF109F BUILDING THREAD
 

The main draw to repaint the plane for me would be the excellent schemes that are available. There are many that would improve the looks of this plane quite a bit and make it a real crowd pleaser.

HW50, if you putting a 1.60 in the plane there is no need to worry about nose weight. I'm still trying to get enough weight in the tail to balance it!

RE: CMP BF109F BUILDING THREAD
 

HW50

The backplate is a constant thickness at 4.78mm (.185" or 3/16 ) a bit more than I wanted, but I have to groove it for the CMP factory spinner.

My only concern is on impact, such a large alum disc on my OS 108, the crank could bend. The plastic spinner should absorb some of the impact, but I am still concerned.

The mount:

What I have done is spread the load by giving the engine a larger surface area to mount directly to the wood with. On the OS 108, (see previous pic) vibration is not so bad. Just balance
your prop and spinner.

I always build strong enough so I do not have failure in flight, but also keeping in mind that I would rather have my engine break off its wood mounts than break my engine upon impact.

This policy has preserved much of my hardware for future use.

Steve

RE: CMP BF109F BUILDING THREAD
 

Evil

I have a brand new Dave Patrick/Moki 2.10. Imagine my self control for not putting that in this 109. Not yet anyway.

Steve

RE: CMP BF109F BUILDING THREAD
 

Steve,

I just sold my Moki 2.10, anythign that big I have will be going gas. This Bf 109 looks nice. I took a good look at it last night and figure I can finish it up quite nice.

I'm going to see if the Moki will drop in. If I have to do surgery, I'll just go with the 1.08 or maybe the ASP 1.20 I have...

RE: CMP BF109F BUILDING THREAD
 

hotrod! I agree with you, I've seen pictures of the full scale jobs and this one's not that far off, even with the "8" being so close to the cross . Your's looks good !;)

RE: CMP BF109F BUILDING THREAD
 

Forgiving on takeoff and landing, I like that !!:)

RE: CMP BF109F BUILDING THREAD
 

Just get mine today, looks quite promising.

My aim is to make it Finnish Air Force G-2. Iam not going to make any dramatical changes to structure of the plane. Only challenge I can see is that I have to remove at least some of the markings and naturally repaint the plane.

Do you have any idea how to remove those national insignas etc? They seem to be quite well fixed.

Old Erkki

RE: CMP BF109F BUILDING THREAD
 

Perhaps Eric, low heat from a heat gun? make sure you READ THIS WHOLE THREAD and the one over at RCGroups as you can learn from our mistakes good luck!

RE: CMP BF109F BUILDING THREAD
 

Had a nice enough day to get the 109 outside for some photos. Doesn't look too bad, considering it is not in the air yet. Notice the photo showing the flaps fully engaged. I don't know if I'll need that much drag, but it is available if I want it. It is on a variable knob so I can bring in as much as I need and make adjustments later. I should have moved the flap hinge line out a bit because they don't go down too far before they bind up.

RE: CMP BF109F BUILDING THREAD
 

Here are a couple more shots. I still have to move the battery back to balance it, but right now it weighs a bit over 14lbs.

I don't think it would be easy to remove the stock graphics without going into the paint. Can't say I tried it though. I have repainted CMP planes before, just sanded them a bit and painted right over with Testors cans, then coated the whole thing in Polyurethane. Very durable. My wing decals on the 109 are painted over with polyurethane, and you can't even see the difference between them and the stock flat paint. I also painted the yellow with testors, then coated with minwax polyurethane in the spray can (only use the oil base in the gold can).

RE: CMP BF109F BUILDING THREAD
 

Hi All

Found this in my stuff of scale parts. I wish i could say I made it, but it was made by a very talented modeler friend of ours. It truly a work of art. Now to print the dials and put a clear lens on the dials ( if get that far), it will be nice.

It seems to fit the CMP 109 . i also have a full vac form cockpit kit which I can't find yet.

The the dash is made from urethane resin (alumilite) and the mold is a titanium based silicone (it has a longer useful life) all supplied from a company called Smooth On.

Steve

RE: CMP BF109F BUILDING THREAD
 

Nice plane Todd.

As for the graphics - they can be rubbed off with acetone. Test it on yours is an inconspicuous place first of course (like the CMPRO decal next to the wing dowels) but I did it on mine and it works a treat. There is a shadow of the old mark left but no raised portion to make marks through the new decal

RE: CMP BF109F BUILDING THREAD
 

Hey Scalecraft,

Do you have the instrument faces? If you don't i have a few books on the 109 as i'm sure you do, but i have a book dedicated to german WWII cockpits and it has full colour pictures of nearly every instrument the Germans used. if has a section dedicated to the G and i could scan the dials and photoshop them up for you if you need it.

Love your L/E slat, and am looking forward to seeing how you continue the bash

Thanks

Dave

RE: CMP BF109F BUILDING THREAD
 

I may have to try the Acetone to remove the decals. Those "8"s on the side just don't look right. Too light, too close to the cross. I think the white band is paint, so I should be able to get the yellow dash off without affecting it.

RE: CMP BF109F BUILDING THREAD
 

Thanks ticketec

i have a ton of books as well on the 109. I'll dig up something for the faces.

Thanks again

HR Todd can you wet sand the markings edge with 600, it has worked for me in the past.

Acetone on polyester resin is bad, must be washed off. If must be used with caution and sparingly.

Steve

RE: CMP BF109F BUILDING THREAD
 

Nice thread. I have been following it religiously. You guys are doing great things with a nice looking arf. I have refrained from saying anything but everytime I read about the air brakes it is like fingernails on the black board. I am not an expert on the 109 but I have done a lot of reading and built a lot of plastic scale models back in my youth.
The upper flap goes to the radiators in the wing. It does not open upwards very high when operational. There is an awesome video which I purchased fom a company thru ebay that goes thru the rebuilding and then exhibition flying of a 109G Black 6 in England. It is incredible espicially if you are into the 109's. You can see the radiator door opening while the plane in on the ground idling. Then when he takes off it closes. In flight it is open now and then. It almost looks like it is set on a thermostat but I am guessing here.
Anyway like I said I am no expert but this is the first time I have ever heard of an air brake on a 109. And all because a model manufacturer uses that phrase for this kit. Great job again of building and modifying and then flying. I had been waiting for the flight results. It would be good to actually hear from a 109 mechanic or pilot about this subject.


here is the link to the video. this is on you tube and is a teaser to get you to buy the video. The video is incredible. I have watched it many times.

http://www.youtube.com/watch?v=NlUTFi3cN00