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  #11  
Old 05-15-2016, 04:53 PM
hyair hyair is offline
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Mig -21 bis build diary continued

Small progress with the mig-21 bis. The delta wings were
constructed and aligned with the fuselage to minimize gaps.
Because of the relatively small span of the wings no inner frame is
needed here and I didn't use the cross profile. The very slight tilt downwards
can be adjusted with a small jig . The wings were filled with delta shaped cartons
to match the shape and thicknes of them.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160516_011146.jpg   Mig -21 bis 1:48-20160516_011219.jpg   Mig -21 bis 1:48-20160516_011303.jpg   Mig -21 bis 1:48-20160516_011519.jpg   Mig -21 bis 1:48-20160516_011618.jpg  

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  #12  
Old 05-16-2016, 01:23 PM
hyair hyair is offline
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Mig -21 bis build diary continued

The main delta wings and horizontal tail surfaces were glued to the fuselage and the Mig -21 is starting to get it's well known typical shape. Next is the Vertical tail and the fat dorsale spine that is much fatter and broader then earlier mig -21 versions because the constant need for extra fuel to extend the relatively short range of the mig-21. In general all the migs had " short legs "because the concept behind them was local defence interceptor and not an attack plane. The mig-19 in particular suffered from short range because of it's two RD-9 afterburning engines which were everything but economical - therefore it always carried two big fuel tanks under the wings center pylons.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160516_213907.jpg   Mig -21 bis 1:48-20160516_213935.jpg   Mig -21 bis 1:48-20160516_214007.jpg   Mig -21 bis 1:48-20160516_214126.jpg   Mig -21 bis 1:48-20160516_214150.jpg  

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  #13  
Old 05-19-2016, 12:53 PM
hyair hyair is offline
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Join Date: Jan 2012
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Mig -21 bis build diary continued

Small progress with the bis. The vertical tail was glued to fuselage. The radome was glued inside the front intake and next will come the dorsale spine.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160519_214255.jpg   Mig -21 bis 1:48-20160519_214327.jpg   Mig -21 bis 1:48-20160519_214354.jpg   Mig -21 bis 1:48-20160519_214438.jpg   Mig -21 bis 1:48-20160519_214541.jpg  

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  #14  
Old 05-20-2016, 09:15 AM
hyair hyair is offline
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Location: Rehovot - Israel
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Mig -21 bis build diary continued

Another small progress with the bis. The dorsale spine which was one big piece was cut into two pieces to allow easier mounting as it is always a challenge to put it nicely in one piece.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160520_172749.jpg   Mig -21 bis 1:48-20160520_172822.jpg   Mig -21 bis 1:48-20160520_172901.jpg   Mig -21 bis 1:48-20160520_175837.jpg   Mig -21 bis 1:48-20160520_175855.jpg  

Mig -21 bis 1:48-20160520_175926.jpg   Mig -21 bis 1:48-20160520_180046.jpg  
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  #15  
Old 05-21-2016, 12:41 AM
hyair hyair is offline
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Mig -21 bis build diary continued

The rear lower stabilizer was mounted and the part was needed some attention in order to merge nicely with the fuselage shape. The two upper wing small aerodynamic air profiles were glued near the wing tips.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160521_091607.jpg   Mig -21 bis 1:48-20160521_091619.jpg   Mig -21 bis 1:48-20160521_091645.jpg   Mig -21 bis 1:48-20160521_091714.jpg  
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  #16  
Old 05-22-2016, 03:06 PM
hyair hyair is offline
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Join Date: Jan 2012
Location: Rehovot - Israel
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Mig -21 bis build diary continued

The tail landing parachute housing was installed. The upper tail warning antenna was glued to the aft -upper tail section.
Slowly the mig -21 bis is starting to get it's shape.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160522_230236.jpg   Mig -21 bis 1:48-20160522_230310.jpg   Mig -21 bis 1:48-20160522_230336.jpg   Mig -21 bis 1:48-20160522_230351.jpg   Mig -21 bis 1:48-20160522_231849.jpg  

Mig -21 bis 1:48-20160522_232018.jpg   Mig -21 bis 1:48-20160522_233812.jpg   Mig -21 bis 1:48-20160522_234334.jpg   Mig -21 bis 1:48-20160522_234436.jpg  
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  #17  
Old 05-25-2016, 02:13 PM
hyair hyair is offline
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Join Date: Jan 2012
Location: Rehovot - Israel
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Mig -21 bis build diary continued

The side fuselage blisters were added as the lower blister near the rear lower stabilizer. Upper and lower wing flap movers were added As well. The under belly twin gun 23 mm
and forward speed brakes are next.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160525_223247.jpg   Mig -21 bis 1:48-20160525_223342.jpg   Mig -21 bis 1:48-20160525_223355.jpg   Mig -21 bis 1:48-20160525_223733.jpg   Mig -21 bis 1:48-20160525_224458.jpg  

Mig -21 bis 1:48-20160525_224531.jpg   Mig -21 bis 1:48-20160525_225424.jpg   Mig -21 bis 1:48-20160525_225450.jpg  
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  #18  
Old 05-25-2016, 02:21 PM
YOAVHOZMI YOAVHOZMI is offline
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well done Yair.

i always like the look of the MIG 21.....i think he is one of the most beautiful and elegant jet.

YOAV
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  #19  
Old 05-26-2016, 11:31 AM
hyair hyair is offline
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Join Date: Jan 2012
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Thanks YOAV !

The Mig -21 is one of my favorits. This one - not completed yet is the 4th Mig -21 as I already build three : mig 21F , mig 21 MF and two seater Mongol.
Some pics of the enlarged family.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160526_200428.jpg   Mig -21 bis 1:48-20160526_200614.jpg   Mig -21 bis 1:48-20160526_200656.jpg   Mig -21 bis 1:48-20160526_200822.jpg  
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  #20  
Old 05-27-2016, 11:43 PM
hyair hyair is offline
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Join Date: Jan 2012
Location: Rehovot - Israel
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Mig -21 bis build diary continued

The under fuselage speed brakes were mounted. The bays of the wheels were covered.The twin barrel 23 mm gun pod
was mounted and glued to position.
Next are upper fuselage small parts.

Yair
Attached Thumbnails
Mig -21 bis 1:48-20160528_022656.jpg   Mig -21 bis 1:48-20160528_022647.jpg   Mig -21 bis 1:48-20160528_022846.jpg   Mig -21 bis 1:48-20160528_083244.jpg  
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