BEST FLIGHT YET ! FMS Su-27 Fighter Jet | Dual 70mm EDF | RadioMaster TX16S radio | FrSky X8R RX
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- čas přidán 10. 09. 2024
- BEST FLIGHT YET ! FMS Su-27 Fighter Jet | Dual 70mm EDF | RadioMaster TX16S radio | FrSky X8R RX
AVAILABLE INTERNATIONAL: www.fmshobby.c...
AVAILABLE IN US: shrsl.com/3v0no
AVAILABLE IN UK: www.cmldistrib...
We use lipo batteries from 4-Max in the UK from here:
4-max.co.uk/ba...
Insta360 GO2 action camera here: amzn.to/3Ie8dvB
RADIOMASTER TX16S MK II RADIO/TRANSMITTER AVAILABLE HERE: www.radiomaste...
Assembly was very straight forward with the Su-27. A child could assemble it with a little help! It's that easy. Once the FrSky X8R receiver was installed and the TX16S setup it was time to head to the flying field.
Knowing that I would be flying off grass I removed the FOD guard on the nose wheel. With it attached it only exposes about 3mm of the tyre. This is done by removing the C-clip, removing the axle and then removing the two screws holding the wire part of the FOD guard. When putting the axle back use 2 washers to pad it out so the C-clip does not get forced off by the axle moving side to side.
Also later changed the nose wheel for larger diameter wheel. www.motionrc.e...
All my current EDF jets use 4-Max 6S6000 60C packs. Although normally larger than the recommended pack size for any jet they provide more power and longer flight times at the expense of some agility due to the additional weight. So I was keen to see if the Su-27 would fly on them off our wet, mildly bumpy, not very short grass at the flying field. I found that the balance point with one of these packs, as far back as possible, was 20-15mm in front of the recommended CG point. For that reason I cut out a section of foam at the back of the battery bay to allow me to move it back another 15mm. I did this while ensuring the battery would not prevent the nose wheel from retracting fully. The CG had moved a little but was still in front of the recommended range. The first two take attempts failed with the nose gear not looking like it would lift off. There is a lot of movement in the nose leg which is perfect for absorbing the bumps on a grass runway. Always the last resort for electric models but out of necessity I then added 30oz of lead to the rear tail section and the 3rd take off attempt was successful but was assisted by a bump half way up the flying field ! Once in the air some up trim was needed for level flight and with one circuit complete I nailed the throttle and put in some progressively low passes. With the speed part of the test complete I cut the throttle and deployed the speed/air brake and made some slow passes for the camera man. Knowing that I had used some battery capacity with failed take offs I opted to put down the landing gear and let the Su-27 slow down before holding up the nose with elevator input and balancing it there with the throttle for a high alpha descent and giving a burst of power on the final flare before touching down the mains and then nose gear.
In conclusion this jet flies extremely well on a lighter 6S5000 pack but the forward CG with this pack does make it difficult to take off from grass unless the other modifications are made. The larger nose wheel gives this jet a more positive angle of attack and really helps it get in the air.
Filmed by Jason for the 'Essential RC' CZcams channel using the Panasonic AG-UX180 4K camcorder at our local model flying club. Onboard action captured using the Insta360 GO 2 action camera.
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AVAILABLE INTERNATIONAL: www.fmshobby.com/products/fms-dual-70mm-edf-su-27-j-11-pnp?ref=EssentialRC
AVAILABLE IN US: shrsl.com/3v0no
AVAILABLE IN UK: www.cmldistribution.co.uk/product/FMS119P/fms-twin-70mm-edf-su-27-artf-blue
Hi Dom and Jason thanks for posting lads. What I thought for a second it was going to stall. So cool it had the power to make it airborne with DEFINITELY your improvements the bump and wind she was up. FLEW great looked Amazing THANKYOU 🇬🇧✌🏼
Thanks Mike 👍
That landing was soft and gentle. Well done with the alterations!
Beautiful air craft and amazing flight.
Many thanks
Looks great Dom, I was surprised how quick she got off the ground, afterburners looked amazing
They did look awesome buddy. Thanks
I’ve put a harder spring in my nose leg as well which stops the bounce and holds the required take off incidence👍
Not a fan of doing that. You're compromising the nose strut to absorb the landing.
@@EssentialRC I only went up one gauge- it still compresses, just doesn’t pogo waiting for a rebound bump to get airborne. The biggest issue is the battery weight is directly of the nose gear which doesn’t help. I’ve done all your other mods as well 👍
Where did you get the spring from
@@EDF_FANatic I had a FMS Corsair retract spring that I cut down and added in stack with the existing one. Raised nose about 5 mm when loaded and this was enough to get the incidence right for take off. I also removed the FOD guard as it was catching the short grass strip we use. Finally went up 10 mm in nose wheel size. These 3 simple mods did the trick
@27niner thanks, all I did was remove the fod and stretch the stock spring for grass ops. Relatively long roll-out but not too bad. If I try your mods I might be able to get up there even quicker. Thanks for sharing.
beauty Su-27UB
With 100% original livery of RF-92210 (but this is Su-27SM's number)
Excellent Dominic great video as usual bud glad I could be of assistance 👍
Thanks again Paul!
@@EssentialRC Hi Dom. Great Video. Thank you for all of the info on the mods. It would be a great help know which wheels to order from motion rc to replace the nose gear and mains. Many thanks in advance. Best wishes!
I got nothing but love for original from Brooklyn ny.keep it coming u my hero 🙌 ❤️ when i grow up i want be like u even tho i just turn 49😅
Hi dom lovely jet my one is little bit smaller I have the xfly twin 50mm I’ve just installed the ring afterburner on the back it looks great and can’t wait to see in air but can’t get out flying cos my poxy car has broke down lol, that does look great in the air though dom, big salute 🫡 Gary 🇬🇧
Thanks Gazza. I had seen the Xfly version was out there. Doesn't have retracts as I recall which would make it lots lighter. I'll go look it up on turbinesRC
Bit strange having to mod so much out of the box. Was the original CoG so far out ?
I guess most Jets are made for smooth runways and you like I have grass. Good flight on a windy day and a lot different to the early attempt to get off the ground. 👍
For short grass runways it was essential. For an asphalt runway it would get to higher speed on the ground so no modifications needed.
Where's the 360 footage ??
Nice flight Essential RC, The take off was short, do you have a video on the settings for that su27 mm edf?
Settings are in the manual. Not a lot to it.
Great video. It would be super helpful if you could please post the exact wheels that you have installed on the plane from motion rc? Our SU will not take off on grass no matter how low the grass is cut. We have removed the boot on the front wheel and still no luck due to the AOA. Many thanks for your help!
www.motionrc.eu/products/freewing-60mm-2-55-x-17mm-eva-treaded-wheel-for-4-2mm-axle-w31212156
Many thanks! @@EssentialRC
Nice flight , How long distance dose it require for take off and landing
Depends on the surface. My guess would be 50 metres on grass. My video shows it.
Man mine is a killer to get of grass! If your using the cg from the manual does the tail weights not push the cg back??
That is why I've done all the mods. It never gets fast enough on grass to get enough lift to rotate. Need to more the CG back so lighter on the nose wheel. Having a larger nose wheel to give it better angle of attack helps as well.
@@EssentialRC cheers for the reply. Obviously the only concern is its too tail heavy and its not flyable ! Ordered that wheel so hopefully that will help.
So where are you now balancing the cg? Cheers for the help (bloomin grass ! To have a tarmac runway!!!)
@@justbigjets7633 Not measured it. If running a 6S5000 pack the new nose wheel will make a huge difference. Probably no extra tail weight required
@@EssentialRC nice one , had 3 flights with it and its awesome 👌. Went to a grass growing field for its maiden flight. Its was like a bowling green and windy but took 4 attempts to get it off the deck! Problem is it eats the battery just getting it airborne.
Great plane but better with vector thrusting if equipped. Do you think you could 80mm and how hard is it to get to the ESCs?
Have added thrust vectoring to quite a few EDFs over the years. Just not worth it. Heavy EDF jets take so much altitude to recover from stall and the thrust to weight ratio is never good enough to recover quickly. Only exceptions are light thrust vectored EDFs that are built very very light. Don't think bigger fans would fit and would just make it heavier anyway.
Also if you fitted twin 80's you would need 2 x 6s batteries to power it as 1 would probably give you about a minute flight time lol
Depends on throttle mangmanagement. I fly turbine jets a lot more full throttle but I my gas planes I manage it more. Like to get an SU30 with vector thrust of course turbine. Now edf planes I prefer Hobbywing 160amp ESCs, 8s 100cc lipo batteries, and JP edf motors. I can get up to 6 or 7 mins on my A10 but I manage it bc it's not a fighter jet.
hi dom, what clubs do you fly at? they look really nice
Not info I publicly share for a few reasons but mainly because it would be contrary to rules at some clubs I belong to. Sorry.
@Essential RC yeah fair enough, understandable
New c.g or still c.g on manual ?
CG as per manual. Would prefer further back but flight times would be far less with smaller pack.
Do you have a link to wheels from motion ?
www.motionrc.eu/products/freewing-60mm-2-55-x-17mm-eva-treaded-wheel-for-4-2mm-axle-w31212156
Damn Russian flyer. But it´s a wonderful model.
Nose heavy
🤣 yeah, yeah...of course it is.