Official Freewing 90mm F-15C Eagle Thread

[shortround91]

I just completed a 8s conversion on my F15 no update speed wise yet had a good 2 minute save to get her down in one piece. Found one taileron not centering all the time why I believe she would just get out of control at times parts ordered hopefully won’t be that long to remaiden. Power wise holly crap 8s huge increase able to CG down to SMC 4400 reg lipos there high volt packs 49/4100 and also there 59/5100 packs. Only 3 flights again parts ordered but flight times look to increase from 3 to a easy 4 minutes with smart throttle management

[shortround91]

Good Evening All. I must be doing something wrong...maybe you can help me out. My F15 will barely get off the ground. In the air it's really slow and sluggish. I bought the 6s 5000 pack with the plane. Are there any upgrades to get this beautiful bird up to a respectable speed? TIA...Jim

A very easy power upgrade provided you have the newest 6s EDF is to install the exhaust reducers. There are 2 PDF files one for a stock EDF and the second for a aftermarket use the standard. Mine which I made my own reducers from PCV took mine from a top speed no matter how I tried was 106mph once I did the reducers immediately went to 117mph. Rotation was very noticeable to everyone at my club best upgrade I can suggest, also the 90 F18 exhaust nozzles work if you can find a pair they aren’t sold separately from what I was told. Here’s a few pics and I went to 55mm on my existing diameter hope this helps

[stojakovic]

Good Evening All. I must be doing something wrong...maybe you can help me out. My F15 will barely get off the ground. In the air it's really slow and sluggish. I bought the 6s 5000 pack with the plane. Are there any upgrades to get this beautiful bird up to a respectable speed? TIA...Jim

first confirm the discharge capacity of your 6S5000 battery，it should be more than 130A
then your can use motionrc newest 6s EDF 4068 1750kv
at last your can change your electric tuning to high angle mode

[bicwig]

Good Evening All. I must be doing something wrong...maybe you can help me out. My F15 will barely get off the ground. In the air it's really slow and sluggish. I bought the 6s 5000 pack with the plane. Are there any upgrades to get this beautiful bird up to a respectable speed? TIA...Jim

[shortround91]

Mines ready to fly just need to do my HUD cockpit illumination mod. This version is my wife’s only jet she’s really likes with the Iraq 🇮🇶 Desert Storm scheme. I was there kinda sentimental to me also

[Reptielenfreak]

Honing for an update version of the 90mm since everything is sold out..

[shortround91]

Ah my club allows them but for me to get certified is a 3 1/2 hour ride each way. Maybe some day

[Evan D]

His is a turbine conversion

[shortround91]

Wow that looks nice I made my own this would have been much nicer. I used a PCV pipe joiner opened up to 55mm exit worked best for me on 6s, haven’t flown her on 8s yet sure I will try some different sizes

[Shaun Evans]

JL conversion pipe for the F-18 works perfectly for this!

[Shaun Evans]

JL conversion pipe for the F-18 works perfectly for this!

[shortround91]

Sorry about that

[Shaun Evans]

On my 90 center will be 35mm measured from the inner cone

I meant the distance from the center of one cone to the center of the other cone. But I got the measurement I needed. Thanks!

[shortround91]

On my 90 center will be 35mm measured from the inner cone

[Shaun Evans]

Hi,

I wonder if anyone can please tell me the center-to-center distance between the tailcones on this bird? Thanks!

[shortround91]

Just upgraded the 90 F15 to 8s I made a set of exhaust reducing nozzles which made an amazing improvement over stock 6s. Not sure if anyone else has gone 8s also and should I make another reducer set with slightly larger outlets

[shortround91]

Swapped the F15 to tailerons the other day a few flights have gains etc worked out super dialed in. She still fells like it is lacking thrust on our grass field, ordered a set of inserts for the exhaust outlets. Hoping they help sweet flying plane very stable forgiving other than the thrust, anyone has more thoughts on a way to improve please post something like to fly her more had one launch I could even rotate yesterday

[Evan D]

It is 8S, the current 8S that FW is putting in their 90's, F-22, J10, Zeus, Eurofighter, etc.

If you click on the youtube link it has more info.

"Nice new scheme on pilot's Uwe Freewing F-15. He upgraded this model recently with the newest Freewing 90mm 4075-1350kv 12 blade EDF power system running on 8S lipos. Enjoy the vid which had the best parts of 2 flights."

[Reptielenfreak]

4075 is 8s i think

[Coconut]

Is that 6 or 8S? What modifications was done besides the paint scheme?