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        Build Log MiG-21 "Fishbed" Park Jet

#1 beanie Aug 26, 2006 09:30 AM

MiG-21 "Fishbed" Park Jet
 
8 Attachment(s)
hey everyone!
ok, here is the next up... a little break/diversion from the B-1B. this was inspired by AC's MiG-21. i helped him convert his templates into CAD plans and then into pdf. he has a beta builder testing out his plans, so i expect that they will be released some time soon. after seeing his beautiful bird, and J's excellent example, i just had to design one myself. thanks to MLem, i've got a beta builder. i'm notorious for building them and then letting 'em sit before the maiden. it was a good month between completion and maiden of the mig-25. still haven't flown my f-4 and f-15 completed a couple months ago.

anyway, so, here it goes. MiG-21 Fishbed. pusher. i'm doing things the traditional soviet way... make 'em rugged and CHEAP! so, i used $8 servos (2) and a $15 brushless motor (BM2409-12). here are the stats:
WS: 26 7/8"
L: 51 1/2"
WA: 300sqin
AUW: 23oz (without paint)
WL: 11oz/sqft
Servos: 2 (aileron x1, elevator x1)
full flying stabs like in the original
Motor: BM-2409-12 (i think that's right)
Prop: 8x6?
Batt: 3s1p 2000mah-2600mah
Parts list: FFF, CF spar, hard wood motor mount, 0.055" paino wire, plastic tubing, magnets (1/4" dia x 1/8" thickness) (16 of them), aluminum foil, 2mm CF rod.

plans will probably be posted a) if there is enough interest and b) after she has had a successful maiden (which will probably be MLem or now, H-J)
here is a preview pic. the one in front is v2.0... about 3/4 finished.
-beanie

Update: link to H-J's beta build maiden: http://media.putfile.com/Ben-Song--s...ark-Jet-Design excellent job H-J!
Update: another excellent video by H-J: http://media.putfile.com/MiG21ParkJet

Update: (9/11/06) plans are available now. version 2.2. there are 2 pages, be sure to download both pages. there are also 2 'scout pics' to help with orienting the actual tiled pages.

Update: (11/30/06) plans updated on post number 324 for those of you having scaling issues. if you printer won't let you print out 100%, you can use the plans on post 324 which are enlarged to 106.383%. thus, when your printer shrinks it to 94%, it will print out to the correct scale.


Update: (7/10/09) plans updated: now available in ANSI E untiled format.


Update: (3/2/10) plans updated to v2.31: now available in ANSI E untiled format and also fixed the stabilator CG to 23% MAC.

#2 beanie Aug 26, 2006 09:32 AM

MLem- 'you've got mail!!' enjoy!... lemme know any discrepancies you come across so that i can update the plans.
-beanie

#3 DCobra Aug 26, 2006 10:17 AM

Looks great Ben, as do all of your Warsaw Pact planes! Now get back to their chief nemesis....the BONE. :p

Paul

#4 beanie Aug 26, 2006 10:24 AM

5 Attachment(s)
here are the first couple steps. first pic is just the plans glued to the foam. the next couple are showing installation of the CF spars (2 of them). i used hot glue almost exclusively on these builds purely for speed issues. the next shows attachment of the front part of the fuse planform and the last shows attachment of the aft fuse planform to the wing section.
-beanie

#5 beanie Aug 26, 2006 10:26 AM

ok, ok paul, i'll get back to the BONE. i'll post a couple build pics of the mig-21 here and there. i'm hoping that MLem will also post his pics... if there are 1 or 2 other beta builders out there that are interested, lemme know since i'll be devoting most of my r/c energies to the b-1b.
-beanie

#6 Hans-Joachim Aug 26, 2006 10:28 AM

They are looking very nice, Ben!

Hans-Joachim

#7 beanie Aug 26, 2006 10:31 AM

thanks H-J! no where near as nice as your designs and builds though! what do you have next on your building board?
-beanie

#8 Hans-Joachim Aug 26, 2006 10:40 AM

A Mig-21, if I can get the plans somewhere
and my 12 years old son will do the F-117 together with me. ;)

HJ

#9 DCobra Aug 26, 2006 10:51 AM

H-J, I'm happy to hear you and Jan-Henrik will be making the F-117 together!

Ben...that sounds like a challenge to you to provide H-J with some Fishbed plans? :D

Paul

#10 beanie Aug 26, 2006 12:58 PM

Quote:

Originally Posted by Hans-Joachim
A Mig-21, if I can get the plans somewhere
and my 12 years old son will do the F-117 together with me. ;)

HJ

hey H-J,
i'd be honored if you were to use my plans :) if you want them, just shoot me an e-mail. you can be another beta builder to make sure the plans work out ok.
-beanie

#11 RCParkflyer Aug 26, 2006 01:26 PM

Very nice Jet Beanie :)

#12 J Morgan Aug 26, 2006 01:30 PM

Well, glad to see this. HJ ....beta builder? This will really be good, and fast!
Both of them look good Ben.

J

#13 Hans-Joachim Aug 26, 2006 02:20 PM

Beanie, youve got an e-mail.

15 years ago, after the fall of the wall,
I had the chance to buy a real one for ~$3000,- or so,
but the transportation was my problem.
Otherwise, she would stay in our garden, now.

I have to get some UHU-POR and will build and fly your MIG-21 in our backyard instead! :)

Greetings
Hans-Joachim

#14 J Morgan Aug 26, 2006 02:33 PM

Oh man, a Mig-21 for $ 3000? I should be so lucky. Get rid of my king size bed and sleep in it!

J

#15 Hans-Joachim Aug 26, 2006 02:43 PM

2 Attachment(s)
Quote:

Originally Posted by J Morgan
Oh man, a Mig-21 for $ 3000? I should be so lucky. Get rid of my king size bed and sleep in it!

J

No chance to sleep in it. There is no room in the cockpit.
When I was sitting in the MIG-21, Ive got many respect for the pilots.
It was a feeling, like sitting on a rocket. Only a few instruments in front
and many cold metall.

HJ

PS: Today, the chance to get a CH-53 for a transport is better for me. :rolleyes: But its easier to cut the grass without a jet staying there.


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