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RE: Seagull PC-9 120 size... - 5/24/2011 6:26 PM   
Anderl7890


 

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From: Kasing,BAVARIA, GERMANY
Status: offline 		Hi guys

I'm just about to finish my PC-9 disaster kit. I had to change or correct that much, that it would have been easier to scratch build one.
Nevermind, i am looking forward to maiden it in early June.

But i am wondering now about the control throws. The throws given in the manual are rather small. I have had planes of the the PC-9s size before 
and in my experience the throws need to be bigger.

Could some of you please post their control throws and COG.
Somehow i don't trust the COG given in the manual. Some guys use 80mm measured from the leading edge of the root rib. Is this COG ok?

Thank you for your help.

Regards Andi   

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RE: Seagull PC-9 120 size... - 5/24/2011 6:34 PM   
gcshawkey


 

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From: conwyuk, UNITED KINGDOM
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quote:

ORIGINAL: Anderl7890

Hi guys

I'm just about to finish my PC-9 disaster kit. I had to change or correct that much, that it would have been easier to scratch build one.
Nevermind, i am looking forward to maiden it in early June.

But i am wondering now about the control throws. The throws given in the manual are rather small. I have had planes of the the PC-9s size before 
and in my experience the throws need to be bigger.

Could some of you please post their control throws and COG.
Somehow i don't trust the COG given in the manual. Some guys use 80mm measured from the leading edge of the root rib. Is this COG ok?

Thank you for your help.

Regards Andi   


The suggested throws are fine...set these as low rates on your Tx and use higher ones ( with expo ) on the high rate position.
Mine flew beautifully with the COG at 85mm from LE at the root. I think 80mm would be OK too.

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RE: Seagull PC-9 120 size... - 6/7/2011 5:07 PM   
Anderl7890


 

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From: Kasing,BAVARIA, GERMANY
Status: offline 		Hi Guys

Maidened the PC-9 today. CG ist fine at 90mm measured from the leading edge of the root rib.
But control throws given in the manual are much too small. I doubled the amount given as "acrobatic throws" to achieve a good roll and pitch control.
The decals are still missing on the pics, but will be applied soon. I also do a new paint job on the cowl. The white stripe didn't match the fuselage on my kit.
Gear is a pneumatic robart 510 series. Flying weight ist 11,9 pounds. It is electric motor powered with a 6S 5000mAh battery.

Regards

Andi


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RE: Seagull PC-9 120 size... - 6/7/2011 5:28 PM   
gcshawkey


 

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From: conwyuk, UNITED KINGDOM
Status: offline 		Nice job - and great pictures too! So, it looks like the COG is OK anywhere within the range 80 - 90 mm from root L/E.
I see you have mounted the tailfeather servos in the back end too. I also fly on a 6s 5000mahrr pack and a 14 x 10 prop, but because my motor is somewhat higher Kv than I would ideally like, the current is a whopping 90+ A at WOT.
Flies nice though, and plenty powerful enough ( approx 2kW ) What size prop you using, and what Kv motor?
I maidened my replacement a few days back - all fine except the nosewheel didnt drop for landing on the second flight, so brought her down on mains, and let the nose drop and slide along the grass. No damage at all. Seems the metal clevis attaching the servo pushrod snapped. I would really like to fit some decent retracts but they cost.

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RE: Seagull PC-9 120 size... - 6/8/2011 12:09 AM   
Anderl7890


 

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From: Kasing,BAVARIA, GERMANY
Status: offline 		Hi

My prop size is 17"x14" but it is not directly driven. I use a gear with 5:1 ratio. My prop makes about 7000rpm, means that the motor has to make 35000.
The motor itself is very small. It just weights 130grams (4.58oz). On the second picture there is the back plate of the stock spinner installed as a size reference. 
The motor is a STRECKER RS330 (german brand) that drives a Reisenauer gear. ESC is a 120Amp YGE (german brand). The motor pulls 75A with full power applied.
The efficiency of this combination is very good. About 83%. Direct drives usually have about 70 - 75%, which means in fact that 25% of the input power is "used" to produce heat and never gets to the prop.  
I chose this kind of propulsion system because it is very light weight (motor + gear 11.2oz) and produces a lot of power. I don't need any lead to achieve the CG  

The plane is capable to go vertical for a very long time.

I didn't like the stock gear from the time i opened the box. It's junk and i wonder why they put it in the box anyway. The robart 510 is fine and guarantees a save landing.
I also changed the nose wheel well. It is much to big. I attached a cover to reduce the cut out.
The yellow strings that control the nose gear are made out of aramid.

Regards

Andi 

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RE: Seagull PC-9 120 size... - 2/18/2013 3:25 PM   
dalkhaw


 

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From: Phnom Penh, , CAMBODIA
Status: offline 		Hi. I just bought a new Seagull PC-9, 120 size. I will be fitting a 4 stroke engine on it. Based on your experience, will a 120, 4-st be more than sufficient for it? Scale flying will be my norm, but with a bit of speed could be fun at times.
rgds

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RE: Seagull PC-9 120 size... - 2/18/2013 4:48 PM   
Bosco2


 

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Status: offline 		Go with the Saito 180 with a 16/10 apc prop and 8 oz weight to the tail and you will be one happy camper.

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RE: Seagull PC-9 120 size... - 2/18/2013 8:45 PM   
DVM100


 

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From: Canberra , Australian Capital Territory, AUSTRALIA
Status: offline 		One of the guys in my club flies his on a 1.20 FS and it goes really well.

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RE: Seagull PC-9 120 size... - 2/18/2013 10:37 PM   
grossy2


 

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From: Medowie, , AUSTRALIA
Status: offline 		We have 3 of these aircraft flying at our club and have a ball trying to fly in formation.
Mine has a GP26R up front the other 2 have DLE-30's up front.
2 of us have swapped out the retract for batter gear. Air up, spring down. I've had to replace the bronze bushing in my nose retract as it's done that much work.
They fly great and we have so much fun with them.

Cheers

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RE: Seagull PC-9 120 size... - 2/19/2013 12:39 AM   
dalkhaw


 

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From: Phnom Penh, , CAMBODIA
Status: offline 		Thank you for your replies gentlemen.
Isn't the DLE 30 too big for the plane? Will it fit in the cowl nicely. I assume the supplied retracts must be too flimsy and that you had to change to better retracts. Is this easily done?


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RE: Seagull PC-9 120 size... - 2/19/2013 10:24 AM   
Bosco2


 

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From: Winston Salem, NC, USA
Status: offline 		The PC-9 that I have seen with gasser engine had to hack up the cowling To make it fit.
This photo shows how a Saito 180 fit's,

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RE: Seagull PC-9 120 size... - 2/19/2013 3:56 PM   
dalkhaw


 

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From: Phnom Penh, , CAMBODIA
Status: offline 		Thank you Bosco2. This looks a beautiful fit.

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RE: Seagull PC-9 120 size... - 2/19/2013 7:29 PM   
NoFlaps


 

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From: Prospect, KY, USA
Status: offline 		I've got a DLE30 in mine and she fits just fine- I modified the pitts muffler to fit better, so i didn't have to hack up the cowl.


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RE: Seagull PC-9 120 size... - 2/19/2013 10:46 PM   
Bosco2


 

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From: Winston Salem, NC, USA
Status: offline 		Hey Noflaps

I would love to see a photo of your set-up I would have prefer to put in a gasser instead of the saito 180,
One of my club members has the PC 9 from Black Horse with a 26 cc gasser and a hachet job on the cowling
so I did not think a gasser would fit in the cowling nice and neat,
DLE make a very good engine I have an old 50 that when in use proved to be reliable and strong not to mention$$$
compaire to DA, The DLE 30 is very compatible in weight and CC comparing it to the Saito 180, the big difference is Gasoline
at this present time is cheaper than Glow fuel.

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RE: Seagull PC-9 120 size... - 2/20/2013 12:33 AM   
dalkhaw


 

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From: Phnom Penh, , CAMBODIA
Status: offline 		Hi noflaps. Pls post some photos of your set up. I think I will fit a DLE in mine. Thanks.

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RE: Seagull PC-9 120 size... - 3/8/2013 12:44 PM   
donddsms


 

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From: Cincinnati, OH, USA
Status: offline 		Bosco,

Here are images of my DLE 20 in the cowl. Doesn't look too bad, and I was able to preserve the fake exhaust pipes.

Don

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RE: Seagull PC-9 120 size... - 3/8/2013 1:48 PM   
NoFlaps


 

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From: Prospect, KY, USA
Status: offline 		I had modified the pitts muffler so it will fit under the cowling...But here's the pic of the engine with cowl off and engine with cowl on. You can see I cut a new access hatch (that I haven't cleaned up yet)- So that part looks rough. Tghe access hatch is actually for the "Sullivan" smoke system access.
I've also changed the cockpit area and added a few details.
I know this plane doesn't have the cordite lines on the canopy, but I aded them- since I think it looks cool.
-FYI- that's a DLE 30, so I can swing a 3 blade prop (as shown) if i decide to.

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RE: Seagull PC-9 120 size... - 3/8/2013 8:49 PM   
markhamregular



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From: Pembroke Pines, FL, USA
Status: offline 		I am planning to acquire one of the those PC-9.
I have a 2-stroke OS 120, do you guys think it's a good match for this plane?
Is Black Horse the same as the Seagull?

Thanks,


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RE: Seagull PC-9 120 size... - 3/8/2013 10:26 PM   
Merlin Man


 

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From: Coffs Harbour, , AUSTRALIA
Status: offline 		Hi,
          I have had the Seagull and Blackhorse PC9's

           Firstly, let me say that the OS 120 2 stroke is a great match for both of these. They both fly very well with plenty of power.

           Both models are the same size. The BH has a few more features including flaps and an internal rudder linkage. The BH has a set of nice looking but poorly operating air retracts. The Seagull has mechanical retracts but these can be a problem. I ended up with Eflite 60-120 retracts which fit nicely.   (these have had a few issues as well ! , but are overall much better. )

           The Seagull has the blackwing walks on the upper wing.

            It is difficult to say which is the better of the two. I think the flaps are useful but you pay more for this one. They are both great looking and flying models.


           Cheers,
             merlin Man.

          

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RE: Seagull PC-9 120 size... - 3/8/2013 10:31 PM   
Merlin Man


 

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From: Coffs Harbour, , AUSTRALIA
Status: offline 		Hi,

         I  will try again to upload the photo of my Blachhorse and Seagull  models...............................

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RE: Seagull PC-9 120 size... - 3/9/2013 1:28 AM   
Bosco2


 

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Status: offline 		Hey, Donddsms

Not bad,
Looks good and to run Gas in stead of glow is worth the extra work.

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RE: Seagull PC-9 120 size... - 3/9/2013 1:36 AM   
Bosco2


 

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From: Winston Salem, NC, USA
Status: offline 		Hey, Noflaps

Nice Nice Excelent job, Now I have to figure out how to do that, I would love to run gas on mine,
To morrow Ill be taking my PC 9 up for the first time,
we have a good break in the weather for this weekend,

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RE: Seagull PC-9 120 size... - 3/11/2013 1:24 PM   
markhamregular



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From: Pembroke Pines, FL, USA
Status: offline 		Thanks for the info Merlin Man.
I noticed the BH is $100 more than the Seagull.
I was not going to use either mecvhanical or pneumatic retracts anyway. I am glad the E-Flite works.
If I go with the BH and the Eflite retracts it may end up a little pricey.
Anyway, I'll keep looking before I make my decision.
I am glad to hear from someone who had both because I read a few bad things about the BH.
Also, I noticed they mention 20 hours plus to build the BH. Usualyy ARF manufacturers always estimate 10 hours or less.
It must be a little difficult to build. I hope the manual is good.

Thanks and take care

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RE: Seagull PC-9 120 size... - 3/11/2013 3:21 PM   
NoFlaps


 

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From: Prospect, KY, USA
Status: offline 		FYI- Mine is actually a Black Horse PC-9.
I bought mine for $125.00 at a scratch & dent sale through Hobby People (West Coast company) about a year or so ago. I had chosen the BHM over the Seagull because the BHM has FLAPS, and I like the option to slow my warbirds down on Final...Though we have a descent size runway at our field, I don't like to worry about the thing having too much speed and me hoping i'm not going to burn it all up during my landing flare.
If I hadn't found such a good deal on the BHM, I would have purchased the Seagull ARF, then would have purchased the BHM wings separately f-just to get the flaps. (Normally I would have just rebuilt the wings myself, but given i have 2 kids now, I no longer have the the luxury of time).
Up to this point, I had always believed that BHM & Seagull were the same factory- given so many of their ARF's share such common features. I've had a bunch of both companies planes and the similarities are soo similar-you'd think there's 1 factory and several brand names on the building. In my opinion, Phoenix ARF's are also nearly identical with these 2 companies as well- right down to the color of paint they use to paint the aircraft firewalls, and the printing / photos on the box & instructions.
Anyway, The 2 planes from the 2 companies are in-fact actually slightly different.
Mine came without a canopy- and given my luck with Hobby People and their stock of spares is hit & miss, i went through Horizon & purchased a Seagull canopy, however it didn't fit !-
I later finally found a BHM canopy. I had also purchased the Seagull markings (which look nicer than the BHM one's.- So that's why mine looks more like the Seagull (#62), but there's actually a mix of the 2 decal sets on her.
Mine has the E-flite electric retracts that work very well- But, the stock nose gear is too thin of wire to prevent it from having a lil' bit of sway from Lt to Rt. So i intend to change out the nose strut given it's high visibility anyway.
Hope this info helps anyone out there a bit.

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RE: Seagull PC-9 120 size... - 3/11/2013 4:26 PM   
NoFlaps


 

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From: Prospect, KY, USA
Status: offline 		Let us know how your flight went Bosco2- pics and video are always a plus too.

I hope to fly mine by the end of the month...I see about getting a friend there to video as well.

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