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Archive for December, 2017
Posted by Herb | Dec 13, 2017 @ 04:53 PM | 37,729 Views
I got this nice MiG-21 as an "airframe only" kit for $249 from MRC :

http://sz-freewing.com/

https://www.motionrc.com/products/fr...mm-edf-jet-arp

https://www.motionrc.eu/collections/jets-and-ducted-fan

http://www.rc-castle.com/index.php?r...Jet+Kit+Silver

The original has a length of 14.7m and a wingspan of 7.15m,

https://en.wikipedia.org/wiki/Mikoyan-Gurevich_MiG-21

whereas the model has a length of 173cm and a wingspan of 80cm,

which makes the model a ~1:8.9 scale (almost exactly the same scale as the FW A-4 Skyhawk).

This particular model is suppose to depict the third generation "MF" variant (with enlarged dorsal spine), as described here:

http://www.mig-21.de/english/technicaldataversions.htm

Direct link to the pdf instructions : https://cdn.shopify.com/s/files/1/10...33136327299338

I plan to install my own power setup, an FMS 80mm inrunner fan, as described here:

https://www.rcgroups.com/forums/show...EDF-fan&pp=100

The main reason is that the FMS fan is a lot lighter than the stock (or even non-stock) FW fan plus it has a better inrunner motor.

I have the same setup in the A-4 Skyhawk and it works really were there, no need to change anything

The paint scheme will the Russian aerobatic one, red on top and silver on the bottom. More or less the same scheme I have in my scratch-built MiG-21 105mm edf:

https://www.rcgroups.com/forums/show...lt&perpage=100

EDIT : videos added

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MiG-21 by Freewing with FMS 80mm Inrunner Fan (2 min 36 sec)


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MiG-21 by Freewing with FMS Inrunner Fan - Big Loops 4K (3 min 37 sec)


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Freewing MiG-21 80mm fast flybys and nice slow rolls (3 min 39 sec)


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