Freewing 90mm F-22 Raptor - Official Thread

[Aros]

Love Raymond. In year's past whenever I needed to order from overseas he was always my go-to source.

[tengarang]

I just looked and Castle doesn't list the 8S rotor. Motion list it but it's out of stock... This could be a rock and a hard spot situation...

agreed, i cant find the rotor either... even checked the Chinese websites aliexpress, alibaba, taobao ect....with no success.

[tengarang]

Love Raymond. In year's past whenever I needed to order from overseas he was always my go-to source.

Agreed, if MRC does not carry a certain item and that if i need to order right away, Raymond is a good source, hes quick to respond to any request and ships faster than most suppliers in China. Fmsmodel is also good as well direct ship

[Pogo]

Clean job....would love to listen to how you did it? What material are the doors made of and what type of hinge? Where's the servo located?

thanks.

Visva11, the doors are formed from Worbla Thermoplastic (their white type) that goes very soft and pliable when placed in near boiling water. I placed the cut to size shapes over the openings and they conformed to the compound curvatures and then held these shapes after cooling. The hinges are all Dubro nylon ( the pinned type). Here's a photo of the servo location.
Tom

[Pogo]

It is on the way! Should be here by Wednesday. In the mean time, did a wheel swap and am moving the nose gear back to the scale position. Will also be shortening the nose gear doors so that they aren’t so massive.

Wow, I had a look at moving the nose gear back too and quickly decided I had no idea how it could be done! :Confused: Sure interested in how you do it!
Tom

[Visva11]

Visva11, the doors are formed from Worbla Thermoplastic (their white type) that goes very soft and pliable when placed in near boiling water. I placed the cut to size shapes over the openings and they conformed to the compound curvatures and then held these shapes after cooling. The hinges are all Dubro nylon ( the pinned type). Here's a photo of the servo location.
Tom

Great...thanks man

[Aros]

Mine arrives Wednesday. Weather looks decent this week...Potential for a Wednesday or Thursday maiden....Excited for this bird!

[tengarang]

Mine arrives Wednesday. Weather looks decent this week...Potential for a Wednesday or Thursday maiden....Excited for this bird!

Glad to hear it Aros, where did you order yours from straight from the factory?
and when do you think you will stock these in the US warehouses again?

[Aros]

Yep bought it from us like all of you. I don't have next stock status at the moment...I can inquire tomorrow.

[tengarang]

Yep bought it from us like all of you. I don't have next stock status at the moment...I can inquire tomorrow.

OK cool thank you good to know on all counts.

[downwindleg]

Yes sir! Here are few pics:

I want your runway dude!!

[tengarang]

after doing some research going to go with the ARF kit and power this bad boy with G+ series 6s 5000mah 55C China Hobby Line setup and keep it light

Power using the FMS 90mm Fan 1900KV 3546 outrunner
http://www.fmsmodel.com/fms-90mm-12-...fan-with-motor

OR

Power using the Freewing 12 blade 6s setup 1835KV 4068 Inrunner.... this motor is much bigger at a less expensive KV....which means more thrust can be expected. However the FMS Fan should be much lighter, and with good reviews too.
https://www.rc-castle.com/index.php?...+90mm+12+Blade
http://hobby-paradise.com/en/product...ct_detail.html

with gecko or predator esc's,

http://www.fmsmodel.com/predator-130a-esc-with-10a-ubec

https://www.motionrc.com/collections...o-high-voltage
https://www.motionrc.com/collections...c-with-8a-sbec

WIll use a 4000uF bypass capacitor to rectify any output BEC conflicts using the multiple BEC method via 2s 1300mah pack mentioned in my earlier posts to prevent any plausible chance of bec failure due to high voltage step down to 5V powering the rx.

a 7 Channel Lemon RX with satellite (always include a satellite with spectrum DSMX, as pockets of failures will occur in various regions depending on where you fly) or re-badged

https://www.motionrc.com/collections...ersity-antenna
https://www.motionrc.com/collections...ersity-antenna

After doing some research focusing on 6s only for the sake of not having to do additional investment on more 4s packs, and keeping the weight down.

gonna go with the freewing 6s high speed setup for the various reason below:

1) direct drop in non hassle tinkering (no foam removal or custom motor foot print to allocation fit)
2) FMS housing will require foam removal,
3) Freewing 1835KV 4068 Inrunner is physically bigger Volume wise than the FMS 1900KV 3546 outrunner, at slightly lower KV to compensate for the pitchier freewing 12 blade impeller
4) the fms impeller seems to have a less pitchier grade than that of a freewing at higher KV but smaller stator/motor and therefore less thrust.
5) the Freewing impeller is pithier than the FMS at a slightly significant lower KV, and since its a inrunner I can be sure to set low timing to maximize the efficiency for this power setup.


https://www.rc-castle.com/index.php?...ing+New+Versio n+90mm+12+Blade"]https://www.rc-castle.com/index.php?...+90mm+12+Blade

http://hobby-paradise.com/en/product/item/5223/product_detail.html"]http://hobby-paradise.com/en/product...ct_detail.html


the decision is still not over (i know i sound confusing right now but just thinking out loud) 8s bone stock version now after doing the 6s high speed setup does make me think about going ack to the 8s stock setup.....for the reasons listed above....

draw back.... additional cost and heavier setup as i do want to achieve high alpha with ease....

Decisions still on going .....

[F106DeltaDart]

Wow, I had a look at moving the nose gear back too and quickly decided I had no idea how it could be done! :Confused: Sure interested in how you do it!
Tom

Tom, I’ll post some more on it once I get a chance to work on it a bit more. I had to completely remove the plastic retract mount and shift it aft to where the blue box is mounted. I’m in the process of bluiding some frame out of plywood the support the retract mount. Still in awe of your doors as well! Will be saving a few of your posts for reference when I get there.

[tengarang]

After doing some research focusing on 6s only for the sake of not having to do additional investment on more 4s packs, and keeping the weight down.

gonna go with the freewing 6s high speed setup for the various reason below:

1) direct drop in non hassle tinkering (no foam removal or custom motor foot print to allocation fit)
2) FMS housing will require foam removal,
3) Freewing 1835KV 4068 Inrunner is physically bigger Volume wise than the FMS 1900KV 3546 outrunner, at slightly lower KV to compensate for the pitchier freewing 12 blade impeller
4) the fms impeller seems to have a less pitchier grade than that of a freewing at higher KV but smaller stator/motor and therefore less thrust.
5) the Freewing impeller is pithier than the FMS at a slightly significant lower KV, and since its a inrunner I can be sure to set low timing to maximize the efficiency for this power setup.


https://www.rc-castle.com/index.php?...ing+New+Versio n+90mm+12+Blade"]https://www.rc-castle.com/index.php?...+90mm+12+Blade

http://hobby-paradise.com/en/product/item/5223/product_detail.html"]http://hobby-paradise.com/en/product...ct_detail.html


the decision is still not over (i know i sound confusing right now but just thinking out loud) 8s bone stock version now after doing the 6s high speed setup does make me think about going ack to the 8s stock setup.....for the reasons listed above....

draw back.... additional cost and heavier setup as i do want to achieve high alpha with ease....

Decisions still on going .....

after all the back and forth.... i am back to my original decision.

Going with the 8s setup bone stock. Felt like i just took a round trip ticket around the world....

on track now.

[JETGREASER]

Question for those of you that are using the FMS fan and mottor, what is your Timing set at?

[C17loadmaster]

I should have noted I have the 8s set up, which is a 12 blade I believe

Email RC Castle... he can usually get it for you from Freewing directly

[PaulZ]

All, I finally maiden-ed my 8s F-22 two weeks ago - amazing flying plane! I like the 8s setup as it has plenty of power and still a wide flight envelope. The takeoff roll-out is similar to my 6s 90mm F-16 which is quite long and was a surprise - it must be due to the extra weight of the 8s EDF and batteries. For those that are interest, I used the AR636 Spektrum receiver (my favorite) and after some experimentation have settled on the following gyro gains for rock-solid handling:

Roll: 70%
Pitch: 40% (recommend a lower pitch gain so you can perform snap rolls better)
Yaw: 60%
Priority: 160

Note: I setup throws in the receiver (not the transmitter) to match the manual exactly for each surface.

It was a good day with 10+ flights on it. This plane really needs a gyro in my opinion as it gets twitchy with a bit of wind.

[tengarang]

Question for those of you that are using the FMS fan and mottor, what is your Timing set at?

looks like the 3546 1900kv motor is 14 pole outrunner

instead of low timing i would set it to high timing to get maximum performance.

If you want to be conservative with power you can also choose to set it to low timing and save some amps, with slightly reduced performance on the high end. (difficult to distinguish just a bit less oooomph)


General rule of thumb for higher rpm inrunners OR low pole count high RPM outrunners go low timing by default

[C17loadmaster]

All, I finally maiden-ed my 8s F-22 two weeks ago - amazing flying plane! I like the 8s setup as it has plenty of power and still a wide flight envelope. The takeoff roll-out is similar to my 6s 90mm F-16 which is quite long and was a surprise - it must be due to the extra weight of the 8s EDF and batteries. For those that are interest, I used the AR636 Spektrum receiver (my favorite) and after some experimentation have settled on the following gyro gains for rock-solid handling:

Roll: 70%
Pitch: 40% (recommend a lower pitch gain so you can perform snap rolls better)
Yaw: 60%
Priority: 160

Note: I setup throws in the receiver (not the transmitter) to match the manual exactly for each surface.

It was a good day with 10+ flights on it. This plane really needs a gyro in my opinion as it gets twitchy with a bit of wind.

I have a few of those RXs and like them. I have never had any issues with Spektrum. Also, in my opinion, the gyro feels better than any others I use, even the HobbyEagle A3S3. I have my raptor set up on 12 channels with the A3S3 but I actually just found a deal and bought a Spektrum AR7350, it’s literally in my mailbox. I’m going to swap it out today and add a bunch of telemetry sensors, GPS, altimeter, current, amps and RPM. I’m fairly new to using telemetry but I think it’s definitely worth it. Especially when you get the flight pack sensor setup to work as a “fuel gauge”. I had 3 636’s before I activated the built in sensors that it has equipped. I sold a AR9350 before I had the programming knowledge I have now and regret it...

[PaulZ]

I have a few of those RXs and like them. I have never had any issues with Spektrum. Also, in my opinion, the gyro feels better than any others I use, even the HobbyEagle A3S3. I have my raptor set up on 12 channels with the A3S3 but I actually just found a deal and bought a Spektrum AR7350, it’s literally in my mailbox. I’m going to swap it out today and add a bunch of telemetry sensors, GPS, altimeter, current, amps and RPM. I’m fairly new to using telemetry but I think it’s definitely worth it. Especially when you get the flight pack sensor setup to work as a “fuel gauge”. I had 3 636’s before I activated the built in sensors that it has equipped. I sold a AR9350 before I had the programming knowledge I have now and regret it...

Agree, Spektrum gyros are the best in my opinion - I use them on all my airplanes. The documentation is horrible but once you figure out what this RX does and how to program it correctly it is worth the money. Also easy to fine tune in the field without getting inside the fuselage to turn screws etc...