Official Freewing MiG-29 Fulcrum Twin 80mm Thread

[Airguardian]

Indeed, so much more stable and predictable with the stabs getting clean airflow! :p

I think I have another couple of un-vectored videos to go (not counting pending air to air stuff that god knows when I'll find time to edit) and then it's vectored videos only going forward ;)

[GliderGuy]

Interesting how the inverted high alpha characteristics differ considerably from the non-inverted characteristics.

Anxiously awaiting your first VT video post.

-GG

[Airguardian]

More pre-crash, no VT:

[GliderGuy]

[Airguardian]

Thanks!
Pre-crash period still.
I swear you will KNOW when the video features the jet with the VT installed ^^

[GliderGuy]

Post repair + VT added or is this video some pre crash period?

Enjoyed it regardless. You are always adding to your maneuver suite.

-GG

[Airguardian]

[Airguardian]

Only without TV nozzles ;)

[radfordc]

This plane is like a high strung pony...fun to ride until it turns around and bites you in the butt!

[Airguardian]

Thanks GG!
I didn't catch it on video this time but essentially another episode of bad-thrustline messing it all up.
I was performing a kulbit and started at too low altitude. I didn't come out clean and immediately entered a high alpha lock. Had only some 15-20m clearance and it wasn't enough to pull out so I pancaked straight to the ground. Fuselage cracked in half in two spots, ducts slightly crushed and broken (nothing too bad), nozzles came out and a few other areas in the fuselage got cracks. Most of those have been fixed already, I'm waiting for the glue to dry and I'll start re-installing the ducts and adding the TV nozzles.

[GliderGuy]

Congrats radfordc for the comeback! ;)

Update: I am almost done repairing my MiG-29 after my later crash, and this time I'm adding the TV nozzles, so expect some interesting stuff coming up soon on my end! ^^
(Though I still have a few unvectored videos to publish! ;) )

The crash / What happened?….If you don’t mind sharing.

Your inverted high alpha flying looks impressive!

-GG

[Airguardian]

Congrats radfordc for the comeback! ;)

Update: I am almost done repairing my MiG-29 after my later crash, and this time I'm adding the TV nozzles, so expect some interesting stuff coming up soon on my end! ^^
(Though I still have a few unvectored videos to publish! ;) )

[jasmith41]

I flew my new Mig today. I don't mind saying I was a little nervous after destroying one last year. Three good flights with no squawks.

You have bigger balls than me thus far. I still haven't even flown my EF SU-30 i bought and built a year ago, let alone unbox the Mig-29 I have...🤣🤣🤣
And now i'm thinking i need the FW SU-35 to learn on...

[Evan D]

Congrats!

[radfordc]

I flew my new Mig today. I don't mind saying I was a little nervous after destroying one last year. Three good flights with no squawks.

[jasmith41]

Mine is about 5mm behind the marks but sometimes I do 10mm. I do have the full span reflex in mine and TVs. Before the reflex and TVs I was a little further aft, 10-15mm behind the mark.

Thanks man...

[Evan D]

Mine is about 5mm behind the marks but sometimes I do 10mm. I do have the full span reflex in mine and TVs. Before the reflex and TVs I was a little further aft, 10-15mm behind the mark.

[jasmith41]

There is no golden rule of thumb but most manufacturers tend to recommend overly nose heavy setups.
The way to go is through in-flight testing to determine whether a CG is too far forward or aft and converge on a more neutral spot (accounting for pilot preferences, obviously).

Thankfully for you, this jet has been tested thoroughly by many people in this thread and others, and mostly everyone will agree and recommend to set the CG 15mm behind the factory-molded CG marks on the wings. Not any forward, not any further aft.
Fwd of that is too nose heavy, and aft of that the plane's capability to recover from a high alpha lock without help of thrust vectoring nozzles diminishes substantially.

If you are using vectored nozzles, then you should be fine to experiment beyond 20mm aft of the CG molded marks without much trouble (always doing so with common sense, in incremental steps and following a sound method, of course).

Thank you...! Seems most lean back on CG from book rates...

[Airguardian]

There is no golden rule of thumb but most manufacturers tend to recommend overly nose heavy setups.
The way to go is through in-flight testing to determine whether a CG is too far forward or aft and converge on a more neutral spot (accounting for pilot preferences, obviously).

Thankfully for you, this jet has been tested thoroughly by many people in this thread and others, and mostly everyone will agree and recommend to set the CG 15mm behind the factory-molded CG marks on the wings. Not any forward, not any further aft.
Fwd of that is too nose heavy, and aft of that the plane's capability to recover from a high alpha lock without help of thrust vectoring nozzles diminishes substantially.

If you are using vectored nozzles, then you should be fine to experiment beyond 20mm aft of the CG molded marks without much trouble (always doing so with common sense, in incremental steps and following a sound method, of course).

[jasmith41]

Time for some more Fulcrum shenanigans!

Great vid - mine is still in box in office. I may actually buy and fly their SU35 before the 29...

What's your general rule of thumb on CG? Do you always go by the book, back a bit, forward a bit, depends on the jet, etc....?