RC4LIFE

This is heart breaking .... but will be back soon...

airborne2.4

Looks as if you only needed a fuse, hatch and cowl or you could have given Ralph a call.
http://www.rcuniverse.com/forum/m_83...tm.htm#8377120

Stiches08

My Feedback: (3)

how would the dle 20 fit this bird??

I see alot of 30s on the thread, just curious at how the 20 would throw this plane around!!!

I have a 20 on a plane but looking to upgrade... any thing will help... Tha


Thanks

Clay

ahicks

My Feedback: (2)

The DLE 30 tosses it around like a big dog shakes a rag doll. Mine looks very similar to the picture above as well. I stalled mine while a little too close to the ground - very likely because of the low power setting I was using at the time - while on high rates?

Anyway, regarding the 20, I would guess it's going to depend on what you're expecting from it. I would think very good sport performance wouldn't be too much to expect, but good acceleration up out of a hover might be execting a bit much? I'm betting that combo will be in the air soon and we'll see for sure?

airborne2.4

First post has lots of info on the DLE 20:
http://www.rcuniverse.com/forum/m_98..._1/key_/tm.htm

WickedWaggy

My Feedback: (2)

I have a friend who put a DLE 20 on a 9.8# airplane, and he said he wished he had gone ahead and put the 30 on it. Mine came in a little over 10, and the YS 110 powered it very well, but I seem to remember it was high 15 or low 16 pounds of thrust, the 20 is only making about 13 pounds. If you just want to fly the racetrack pattern and do touch and go's - the 20 should be fine.

n6iap

Clay et al,

I have the Saito 20 gas on mine and it flies fine but does not have enough power to gracefully pull out of a hover. By that I mean that you stall when coming out and it doesn’t hold altitude long. That may be just my ability but if you want to do 3D I would recommend following the larger engine advice. I do fly the aircraft in racetrack mode and normal aerobatics so the engine fits me just fine.

Thanks,

jimm

airborne2.4

I have the MLD 28cc up front on my 90-1.20 AW Yak, Its fine for 3D, but the pull out is kinda slow though.
The JC EVO 28 has more power!
http://www.youtube.com/watch?v=ZWDEsav7yZU
http://www.youtube.com/watch?v=SsdEPa70dMc

RW MX2 and the AW Yak AUW is pretty much the same.

MX2 28cc to 30cc plane
Specifications:
Wingspan 73"
Wingarea 1025 sq in (66sq dm)
Length 68"
Flying weight 9.5 to 10lbs TRUE AUW!

AW .90 to 1.20 Yak 54
Specifications:
Wing span 72 inches.
Wing Area 960 sq. in.
Fuselage Length 62" (Rudder to front of cowling)
Fuselage length 65" ( Rudder to front of spinner)
Weight 9 to 10 lbs

Beej

Hi All,

Just about to step up into the AW YAK and have been scouring 100+ of these pages for engine selection tips so I have a fair idea of what people find successful for "sport", IMAC and 3D. I have always been a nitro flyer until now with largest engine being a Saito 125, and am a bit nervous about all of the extra "stuff" (and weight?) that comes with gas. Have boiled my engine choices down to three - YS 140, Saito 150 and DLE 30. I think all three would have plenty of power and throttle response and maybe not have to add lead to the nose to balance it out. LHS guys (who sell DL and Saito but not YS) are adamant that DLE 30 is the right choice based solely on fuel consumption, especially if you are looking to work the throttle vigorously through 3D. So my question for you all is a simple one - with the standard YAK tank and set up - do the larger nitro 4S engines I am considering give good flight times? (I know they cost more to run, especially running 20/20 or 30% Heli fuel!).

Thoughts appreciated!! I know engine selection is a common dilemma with no real "right" or "wrong" answer.

very best

Beej

WickedWaggy

My Feedback: (2)

Having been over 2 years since I had this plane, I would still go with a lightweight glow setup in it. The YS is a favorite of mine. I have had the pleasure of playing with a YS 115, and that's what I would use. The 140 is OK, but the design is down on power compared with the newer motors, the 115 is right there with it in power now, not lacking much. Plus the 140 is a HOG on 30% nitro where as the 115 is better on fuel than my Saito 82. I was running a 16 oz tank, flying for 12 minutes, landing and still have 30% of a tank left. I'd run glow for weight savings because of the wingrock in the upright harrier, which is my benchmark in planes for wingloading and "float." The lighter your plane, the better it will handle this and all 3D maneuvers.

If you just want to get up and burn holes in the sky, using the plane like an expensive Super Sportster, then use the DLE 30. Ignition and ig battery will have you pay a price in the weight department - but it is what it is. At least take a look at the Syssa 30. It was actually designed for this plane! Top quality engine for about $100 more than the DLE. Totally worth it IMHO.

Beej

Thanks! Hadn't considered the Syssa 30 nor heard much about them but a after a bit of googling they look like pretty enticing.

best

Beej

ahicks

My Feedback: (2)

I built the plane with a DLE 30. To say the power was a bit over the top might be an understatement to some, while others might like it.

As a dyed in the wool gas convert that has spent some time with a DLE 20, I would suggest this might be the ultimate engine for this plane. It's a full 8oz lighter than the 30, does a pretty good job on an APC 17x6 IMAC, and can use a 6-8oz fuel tank!

I wouldn't recommend the setup for somebody just starting out with gas, but some are now using a single battery pack to supply power for the radio and ignition (ign. output regulated with the use of diodes) to keep weight down.

This puts the power to weight to wing area ratios in a pretty attractive area for performance addicts. Areas I'm betting a nitro engine would struggle to beat. Check it out.

airborne2.4

First post has tons of info on the DLE 20
http://www.rcuniverse.com/forum/m_98...tm.htm#9863953

elhepilot

I have an Evolution 26GX in a Miles Sparrowhawk. I am looking for a YAK 54 airframe to put the 26 in next. Would this be a good motor for the 90-1.20 YAK QB?

Started reading whole thread and found the answer to my question - yes!

Beej

Hi Everybody,

I have a battery question so am interested in your views. Went for the Syssa 30 and Syssa IBEC so no separate ignition battery (and this is my first gasser) and would ideally like to run parallel batteries. Rather than two heavy A123s or similar I wondered about 2 x 6V eneloop packs (2000mah each, approx 130g). Running them together should solve the voltage drop issue under load but I'm wondering whether 4000mah total will be enough for a decent number of flights, especially considering they will be running the ignition as well?? Thoughts appreciated.

Servos are pretty high end Hitec all round - 4x 7985 (elevators/ailerons), 1 x 7955TG (a 300ozin monster for the rudder), and 7966 HB (throttle).
Thanks!

Beej

officerp

Lost mine today. I was using a 6v 1700 nimh battery and was on the 4th flt and it quit responding. Last time I ever
use a nimh battery on an airplane this size.

ahicks

My Feedback: (2)

Running a similar setup on a DLE 20 profile. High power digital servos. I added the second pack after running into brown out issues using a single. No trouble since and proven good for 6 or seven flights to date. Suspect it'll go that many more if I wanted too?

ahicks

My Feedback: (2)

Yup, nearly had the same thing happen to me. Thought I was a goner a couple of times until figuring out what was going on. Some notes over in the gas section if you haven't seen them already.... 1 or 2 Batteries-DLE20

http://www.rcuniverse.com/forum/m_10660072/tm.htm

officerp

Thanks, I ordered another one yesterday with their Power 30 system. The tech Mark was very helpful and explained it in a way even a caveman could comprehend! Thanks for the link[8D]

Beej

Hi All,

Half way through the build and i have a problem that I hope you can help me with. Got 6 control horns in the kit, left and right, as advertised. I noticed that they are angled off the vertical, presumably to help with the geometry at larger deflections. However after I attached (and CA'd them!) I noticed that three of theme (the "left" ones) have a much greater angle than the right ones - about 30 degrees - really a lot!

Are they meant to be this way?

This brings me also to my pull=pull ridder set up. Having big troubles there. Have followed the instructions carefully but somehow the geometry is all wrong - as though the left and right cables are on two different lengths. If I get the cables firm (but not tight) in the neutral position then on deflection the cable on the non-pulling side over tightens and pulls out of the arm it gets so tight. Tells me that one side is significantly different length to the other. Servo arm is perpendicular to the rudder at neutral. Maybe it's because of the different angles of the control horns on either side? The one on the right ends up being about 5-8mm "lower so presumably has further to travel. It's like I've got two different sets of hardware installed. If this is one of my problems then I'm really in the poopy-doo when I come to set up the elevators with two servos (also same mismatch on horns, being one "left and one "right")! Those horns are on there for good with all of the CA so I seriously hope they dont all have to come out for some reason!

Help! Please.

best

Beej

RACER7696

My Feedback: (3)

Hello everyone.I am currently half done building this plane I will be flying this with the sassy 30 cc.I am going ti try to get her as light as I can have any of you noticed any changes when going to the cf landing gear and wing tubes.also a cf spinner.also if you have this plane and engine combo how do you like it

airborne2.4

Ask these guys http://www.youtube.com/watch?v=ksNKXSeimu4

RACER7696

My Feedback: (3)

Im shure this has been asked many times but would you guys consider running one 5200mah lion. I want to try and get her as light as I can.also have you guys seen a noticble diff in performance when going with the cf landing gear. Thanks

leedees

The Aeroworks 90-1.20 Yak is the worst flying airplane I have ever flown and I've flown a lot. Gave the thing away to a pal, a better pilot than me and he hated it. Parted the thing out and sold the airframe.

Most of the AW planes are great but this one, not so much.

capt1597

gee....... tell us how you really feel. i disagree. i love to fly mine and have well over a 1000 flights on it. if you read the whole thread you will find alot very happy owners. all models are going to have stronger and weaker caracteristics. that being said this model has flown way above average for me. if you are looking for foammy style 3d, maybe not so much. i love flying this plane. my buddies all have admirred how smooth she flys while being a fully capable stunt plane. sorry to hear that yours did not work out for you. happy flying, capt ...... PS, if your buddy thought so little of the plane how could he accept money for it? that's low (just my two cents)