RE: Introducing the new 90-1.20 Yak QB

RE: Introducing the new 90-1.20 Yak QB
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RE: Introd... - 4/15/2008 3:17:06 PM

TomTreese

Posts: 424
Joined: 7/30/2005
From: Williamsburg, VA, USA
Status: offline

Mr.G,

Mine did exactly the same thing. My aileron connection came off and the control rod did some cosmetic damage to the Ultracote. Recovered the area. Both Hitec HS645s have the lock washer installed but because I keep the wings in a travel bag I was not checking them every day. I used some loctite and have 3 flights since and so far they are fine.

I wonder If Aeroworks changed something in the construction around the landing gear???

There are 49 pages on this thread and the gear problems never showed up till this year??

_____________________________

Insanity: Keep doing the same thing expecting a different result.

(in reply to Ferocious Frankie)

Post #: 1226

RE: Intro... - 4/15/2008 3:59:48 PM

MR G

Posts: 548
Joined: 12/20/2002
From: San Antonio, TX, USA
Status: online

Tom,

I have noticed that some people have problems with the landing gear. I have not had any issues at all.

My runway is 400'' so when I land I have plenty of room to allow the plane to slow down before turning around for taxi back to the pits. Ferocious Frankie has had some gear problems, he sais it is from the torque on the gears when turning on the runway. I don''t know how fast he is going when he turns, maybe Frankie will chime in and give more specific details on the circumstances of his failures. I think he has repaired his three times now.

MR G

_____________________________

Take-offs are optional...
Landings are mandatory!

(in reply to TomTreese)

Post #: 1227

RE: Intro... - 4/15/2008 4:11:30 PM

TomTreese

Posts: 424
Joined: 7/30/2005
From: Williamsburg, VA, USA
Status: offline

Our runway is 600 feet of grass that I mow, so I known it''s as good as a golf fairway.
When the Yak comes in a bit fast it doesn''t want to land so I use up some runway and have to turn to keep out of the crops. That's when the twisting happenes.

[b]Has anyone tried flapperons with the YAK? I''m thinking Flaps might help?

< Message edited by TomTreese -- 4/15/2008 4:12:38 PM >

_____________________________

Insanity: Keep doing the same thing expecting a different result.

(in reply to MR G)

Post #: 1228

RE: Intro... - 4/16/2008 1:16:14 AM

capt1597

Posts: 17
Joined: 2/12/2008
From: toledo, OH, USA
Status: offline

alive and well here by the great lakes,well sort of. i had promised to go to the toledo show to see if there were any new products but the night before the show i came down with the worst flu of my life and spent the time of the show in the local hosbital. just 4 mi. from the convention center.i read that people are putting locktite on screws which i think is good but i want to share with you all some thing that happened to me this winter on another plane. i locktited my servo arms on a non-metalic (carbon fiber type gears) and the blue locktite desolved the servos.(bummer). as to the question about flapperons for this kind of plane i tried it on a simaler size cap model plane and what happened was unexpected. due to the extra large size of the airilons they acted like an elevator, so when the flaperon came down the nose of the plane went down big time.ithen tryed different different amounts through and alwas the same results. it did make for some very exciting flying but i won''t be trying this again. lastly i thought i would offer an opinion. i''m sure it will not even be worth the minimum two cents what makes a plane like this yak really special is its ability to do slow delicate stunts so the key to maximizing this plane BUILD IT LIGHT!!!! i did not use the nose cone, i did not use the wheel covers, i did not put in an interior, i did add wieght by epoxiing both the engine conpartment and the landing gear area but with west system epoxies which are alot thiner and therefore less weight needed. results are that the plane flips not snaps with hard elevator imput. the plane flotes in a harrier not wobble. i am not the best flyer in the world but this plane all lightened up makes me look good! P.S. i fly on a private 1000 ft. grass strip and i am sorry you guys have to jam your planes in on such tight quarters.(that is a joke)

(in reply to TomTreese)

Post #: 1229

RE: Intro... - 4/16/2008 2:45:47 AM

Ferocious Frankie

Posts: 504
Joined: 5/5/2005
From: San Jose, CA, USA
Status: offline

quote:

ORIGINAL: MR G

Tom,

I have noticed that some people have problems with the landing gear. I have not had any issues at all.

My runway is 400'''' so when I land I have plenty of room to allow the plane to slow down before turning around for taxi back to the pits. Ferocious Frankie has had some gear problems, he sais it is from the torque on the gears when turning on the runway. I don''''t know how fast he is going when he turns, maybe Frankie will chime in and give more specific details on the circumstances of his failures. I think he has repaired his three times now.

MR G

Not me, but Tom.

I also had the gear rip out of mine, but not of the steering torque, but because of a hard landing from a deadstick. Came in san caught the grass on the side of the runway causing the gear to rip and out and push back the gear into the wing, but creating only one hole. Got mine repaired and it is a lot stronger than the stock configuration.

I have also changed my landing strategy. Now, what I do is bring the plane in closer to the runway and turn in for final sooner. This allows for less floating time and more power for landings combined with a higher throttle setting when coming down. I had problems with the prolonged distance from the plane to the runway, because I would try to bring the nose up to soon and the plane would balloon up. Speed is not the enemy of this plane, but it is its friend.

Landings are greased everytime.

Keep in mind, I landed fine before my "crash", but now I have approached landings with this plane with a differnet view and it's working out. Simply put, these high performance light-weight aerobatic planes are not made to land hard or in Tom''s case turn.

< Message edited by Ferocious Frankie -- 4/16/2008 2:47:56 AM >

_____________________________

"To fly is everything." -Wright Brothers
Club Site: www.sccmas.org

(in reply to MR G)

Post #: 1230

RE: Intro... - 4/16/2008 2:51:57 AM

Ferocious Frankie

Posts: 504
Joined: 5/5/2005
From: San Jose, CA, USA
Status: offline

quote:

ORIGINAL: capt1597

alive and well here by the great lakes,well sort of. i had promised to go to the toledo show to see if there were any new products but the night before the show i came down with the worst flu of my life and spent the time of the show in the local hosbital. just 4 mi. from the convention center.i read that people are putting locktite on screws which i think is good but i want to share with you all some thing that happened to me this winter on another plane. i locktited my servo arms on a non-metalic (carbon fiber type gears) and the blue locktite desolved the servos.(bummer). as to the question about flapperons for this kind of plane i tried it on a simaler size cap model plane and what happened was unexpected. due to the extra large size of the airilons they acted like an elevator, so when the flaperon came down the nose of the plane went down big time.ithen tryed different different amounts through and alwas the same results. it did make for some very exciting flying but i won''''t be trying this again. lastly i thought i would offer an opinion. i''''m sure it will not even be worth the minimum two cents what makes a plane like this yak really special is its ability to do slow delicate stunts so the key to maximizing this plane BUILD IT LIGHT!!!! i did not use the nose cone, i did not use the wheel covers, i did not put in an interior, i did add wieght by epoxiing both the engine conpartment and the landing gear area but with west system epoxies which are alot thiner and therefore less weight needed. results are that the plane flips not snaps with hard elevator imput. the plane flotes in a harrier not wobble. i am not the best flyer in the world but this plane all lightened up makes me look good! P.S. i fly on a private 1000 ft. grass strip and i am sorry you guys have to jam your planes in on such tight quarters.(that is a joke)

I used everything that came with the kit,but I don''t have an interior just a dash panel. When I first built the plane, I fuel-proofed the firewall. After the crash, I epoxied the painted area under the firewall and reinforced the gear area with lots of glue.

Plane weighs 10 lbs +/- a few ounces and flys like a champ.

< Message edited by Ferocious Frankie -- 4/16/2008 2:52:37 AM >

_____________________________

"To fly is everything." -Wright Brothers
Club Site: www.sccmas.org

(in reply to capt1597)

Post #: 1231

RE: Intro... - 4/16/2008 3:09:49 AM

Scote

Posts: 36
Joined: 10/31/2006
From: Delta, BC, CANADA
Status: offline

quote:

ORIGINAL: Ferocious Frankie

Plane weighs 10 lbs +/- a few ounces and flies like a champ.

I''m wondering is that weight before you fuel up or after?

My plane with fuel in(batteries), after market 3" wheels(slightly heavier), wheel pants, complete cockpit, etc. = 10 lbs. 6 oz. and flies very light......I would be disappointed if you couldn''t have a little bling, bling on this ship!

< Message edited by Scote -- 4/16/2008 3:11:09 AM >

(in reply to Ferocious Frankie)

Post #: 1232

RE: Intro... - 4/16/2008 4:06:03 AM

Ferocious Frankie

Posts: 504
Joined: 5/5/2005
From: San Jose, CA, USA
Status: offline

quote:

ORIGINAL: Scote

quote:

ORIGINAL: Ferocious Frankie

Plane weighs 10 lbs +/- a few ounces and flies like a champ.

I''''m wondering is that weight before you fuel up or after?

My plane with fuel in(batteries), after market 3" wheels(slightly heavier), wheel pants, complete cockpit, etc. = 10 lbs. 6 oz. and flies very light......I would be disappointed if you couldn''''t have a little bling, bling on this ship!

Weight given is the DRY weight. Sorry I forgot to mention that. The WET weight with the 24 oz tank should easily go into the 11 lb range.

_____________________________

"To fly is everything." -Wright Brothers
Club Site: www.sccmas.org

(in reply to Scote)

Post #: 1233

RE: Intro... - 4/16/2008 2:06:09 PM

MR G

Posts: 548
Joined: 12/20/2002
From: San Antonio, TX, USA
Status: online

Ferocious,

Sorry, I got you and Tom swapped in my head. This airplane does land differently than what I am used to.

What I do is cut the throttle on the downleg side of the final approach, after I make the turn onto final I will add a few clicks of throttle back in. If I am happy with the approch attitude and runway alignment I will cut throttle and land, it seems to lock in a pitch angle and lands by itself, pretty smooth.

MR G

_____________________________

Take-offs are optional...
Landings are mandatory!

(in reply to Ferocious Frankie)

Post #: 1234

RE: Intro... - 4/18/2008 4:27:28 AM

Slviper

Posts: 90
Joined: 1/4/2007
From: Gallatin, TN, USA
Status: offline

Gents,
Just got the Yak from LHS, OS 120 AX w/Bison Muffler, Sektrum DX7 TX with AR7000 RX. Brand New RTF Never flown. Build quality is excellent. The only issue was he built it with the DS 821 Servo's and 1700 MAH battery that came with the Spektrum kit. Manual calls for 140 oz Metal Gear on controls with 180 oz on Rudder. What servo's would you suggest and cost? I am leaning toward HiTech. Battery size?
Thanks in advance,
Steve L

_____________________________

Steve L

(in reply to Ferocious Frankie)

Post #: 1235

RE: Intro... - 4/18/2008 2:03:05 PM

TomTreese

Posts: 424
Joined: 7/30/2005
From: Williamsburg, VA, USA
Status: offline

If you are just building or have the Yak the tail wheel springs are a bit weak. When you bend them around the connection holes they will eventually break.
I just replaced mine with A pair I got at ACE Hardware. ( C-55. 5/32 x 1-7/8 x .20 Utility EXt spring) They are about $3.75 and go on easily, fit perfectly and are much stronger.

_____________________________

Insanity: Keep doing the same thing expecting a different result.

(in reply to Slviper)

Post #: 1236

RE: Intro... - 4/19/2008 3:12:49 AM

Ferocious Frankie

Posts: 504
Joined: 5/5/2005
From: San Jose, CA, USA
Status: offline

quote:

ORIGINAL: Slviper

Gents,
Just got the Yak from LHS, OS 120 AX w/Bison Muffler, Sektrum DX7 TX with AR7000 RX. Brand New RTF Never flown. Build quality is excellent. The only issue was he built it with the DS 821 Servo's and 1700 MAH battery that came with the Spektrum kit. Manual calls for 140 oz Metal Gear on controls with 180 oz on Rudder. What servo's would you suggest and cost? I am leaning toward HiTech. Battery size?
Thanks in advance,
Steve L

I have Hitec 5985s all around on mine and they are great. A little overkill, but well worth the extra security, reliability, and holding power. I'm sure some other guys on here will chip with their servos.

For the battery, I'm using a single 6V JR 2700 mAh Ni-HM. I can get a good 4-5 flights on a single charge. Keep in mind the digital servos drain more than the analogs.

< Message edited by Ferocious Frankie -- 4/19/2008 3:13:22 AM >

_____________________________

"To fly is everything." -Wright Brothers
Club Site: www.sccmas.org

(in reply to Slviper)