Official Freewing 80mm MiG-21 Fishbed Thread

[hirth90]

Just completed my East German MIG 21 scheme. Looking forward to flying it soon.

[SanExup]

Yes! Helena is not that far for something like that! And the scenery in between is not too shabby. If you think it's happening I would definitely make the trip!

[T- Elbert]

Thank you . I really enjoy painting these birds but I love flying them.
I noticed your fairly close as western US goes. I believe we are going to try a EDF jet jam this summer . I can get you the information when we settle on a date.

[SanExup]

@T-Elbert Nice Mig! Nice F18! Actually, all the ones you've customized look good. I'm not envious in the slightest, definitely not.

[T- Elbert]

Just finished this paint job for a buddy
I really dig these mig 21 lots of liveries to choose from

[T- Elbert]

[Miroslav Cerny]

The MiG-21 is simply a beautiful aircraft.

[krkan]

is it time for overhaul after 200 flights?

[Griffon Wings]

Take a part with you at homedepot or lowes and ask a small sample to match the paint. That easy

[cartrouble2k]

Hey guys - just maidened mine (blue livery) - looks and flies like a dream! Unfortunately I chipped the blue and gray paint a little taking it on and off of the stand. Does anyone know the exact matte paint colors I could use to patch it up? Thanks!

[Griffon Wings]

Madness looks like Mizer 67 fix the question!
Thank you M67 for be awesome.

[Mizer67]

The FMS unit is a couple of millimeters wider in diameter and the fan itself is longer by a few mm too. That much I know as a fact.

I also know it's not hard to make it fit by relocating the inlet lip forward (vs. carving foam to keep it in the stock location) and sanding a little foam to make the diameters match up better.

[Madness]

If you want to be sure 100% i can take off mine and mesure with a caliper the diameter, if help .

That will be awesome! The measurements on mine are on the photos below.

[Griffon Wings]

Hi everybody! I have a 80mm 12 blades EDF with a 3270/2000 Kv inrunner motor that I saved from a crashed EFlite F4 Phantom. Do you think it could work on the MIG 21? Been looking at the ARF version for some time now. Thanks in advance for your feedback!

If you want to be sure 100% i can take off mine and mesure with a caliper the diameter, if help .

[Mizer67]

Hi everybody! I have a 80mm 12 blades EDF with a 3270/2000 Kv inrunner motor that I saved from a crashed EFlite F4 Phantom. Do you think it could work on the MIG 21? Been looking at the ARF version for some time now. Thanks in advance for your feedback!

Should work great. I use the 2100kv version of that 80mm fan and it's my favorite choice for 80mms for 6 cells.

It does take a little bit of sanding and generally making a new space for the intake lip for it to fit, but I'm not a great modeler and if I can do it without any special tools, anyone can.

[Griffon Wings]

I wouldn’t mix water with wine!!!
look for the mig new Inrunner, works great ...

[Madness]

Hi everybody! I have a 80mm 12 blades EDF with a 3270/2000 Kv inrunner motor that I saved from a crashed EFlite F4 Phantom. Do you think it could work on the MIG 21? Been looking at the ARF version for some time now. Thanks in advance for your feedback!

[long-love-rc]

Thank you very much for writing such a great document, from which I learned something I didn't know!

MiG-21
I finished my MiG-21 build. I modified my model with:

• Strobe lights on the vertical stabilizer, top and bottom of fuselage, and bottom of the wing tips
• Landing lights
• Electric brakes
• Orientation stripes on bottom of wings and horizontal stabilizer
• FOD screen over the louver on the cheater hole
• Anti-spark connector
• Current and voltage telemetry

I’ve linked a YouTube video showing some of these mods:

https://www.youtube.com/watch?v=Hy7gvTCyHr8

I created a detailed, step-by-step document showing what I did on my model. I organized the document in sections so it is easy to find a specific mod, such as the strobe lights on the vertical stabilizer. I hope this is helpful to those who haven’t built their MiG yet or who may want to do one of the mods I did on mine. You can view the document here:

http://nebula.wsimg.com/5ccd7d619b687a74d97f9322c144cdc6?AccessKeyId=58FD2D57840425E85153&disposition=0&alloworigin=1

And, clearly, my mods aren’t intended to be scale.

Overall, I thought the basic build process was relatively straightforward. I did run into several minor quality issues, which are described in the build companion document.

One area that I think isn’t so well done is the routing of the servo wires for the wings. Removing the plastic louver over the cheater hole seemed like a bad idea to me. The louver on my model was very firmly attached and I didn’t want to risk damaging the model taking it off. Instead, I removed the EDF access cover and EDF, both of which are installed with screws. This made installing the servo wire channel covers a bit challenging, but doable (described in the build companion document).

I hope Freewing will fix this issue by doing one of the following:

• Pre-installing the plastic channel covers in the fuselage sides before gluing them together
• Leaving the plastic louver un-installed so the builder can glue it in after routing the wires
• Mounting the plastic louver using screws instead of glue (see Air Jon’s post 4002 for a great mod tip)

Freewing could easily implement the first change by having the covers glued before gluing the fuselage halves together. This would enable the builder to route the wires by removing the EDF access cover and EDF without requiring removing the louver.

Unfortunately for me, because of weather, it will likely be a couple of months until I can maiden this plane. I’m hoping for a rare flyable day before spring so I can try it.

I would appreciate any feedback you may care to provide on the build companion document. I’ve received a lot of help from other hobbyists over the years and would like to give back to the RC community. In general, would you find documents like this helpful? Is there too much detail or not enough? What kind of topics would you like to see addressed? If you care to provide feedback to help me better serve the RC community, please PM me or send email to yourrccompanion@indy.rr.com.

[Mizer67]

Does anyone know how fast the high performance version Is?

Highest speed I clocked with an FMS 2100kv pro motor is 113 mph in level flight at approx. sea level on a non-std. (hot) day.

I'd say 105 - 110 mph based on battery and conditions at sea level on a consistent basis. Although I'm not running the Freewing motor, I would expect similar speeds. The FMS is mainly good for additional thrust vs. a substantially higher top speed.

[Quickstop]

Does anyone know how fast the high performance version Is?

Pretty fast