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Old Jul 02, 2011, 02:51 PM
WickedFunRC's Avatar
Utah USA
Joined Jun 2002
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Well, I put the Corona 939 metal gear servo's in the tail, but left the 10g digitals in the wing. One of the ailerons stripped a gear. I put the Corona 939s all around now and all seems well.

I put together a rough video that I'm uploading to YouTube. I'll post it when it's ready.
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Old Jul 02, 2011, 05:34 PM
WickedFunRC's Avatar
Utah USA
Joined Jun 2002
2,235 Posts
Here is the video I made today, winds were mild at about 5mph - 10mph. I made this with my rigged hat cam and most of the footage was sky or dirt so I cut up the vid. I've been flying flat wing, lightweight planes exclusively lately so it's taking me a bit to get used to it. This isn't my favorite flying vid, but it does show some capabilities of the plane. It can fly fast and still be slowed down quite a bit. I actually really like this plane the more I get used to it.

Motor - Suppo 2217/7 1250kv 70g
ESC - Suppo 30a ESC
Battery - Electric Power 35C 1300mAh 3S
Servos - DS-939 Metal Gear 12.5g
Propeller - 10x4.7 Power flow

Techone_Yak_7-2-11.wmv (3 min 34 sec)
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Old Jul 02, 2011, 06:15 PM
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USA, CA, Santa Paula
Joined Mar 2007
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Hey Khen,

Thanks! great video and the first I know of (beyond Anthony from HK) Looks like you put the servos in the tail as it shows in the plans and obviously it's balanced. I ordered some 1800 mA batteries with it. I also have some 1550 and 1300. I'm going with an EFlight 480.
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Old Jul 02, 2011, 06:26 PM
WickedFunRC's Avatar
Utah USA
Joined Jun 2002
2,235 Posts
Thanks! Yeah, I wanted to get a video up quick because there aren't many yet. I still have some coupling to work out with the lighter packs. It's a bit tail heavy so I have a bit of down trim to keep it flying level upright. I've also flown it with my old 1800mAh Blue Lipo packs and it does great with those as well but they don't fit in the cut out so I have them twisted in there.

The lighter weight 70g Suppo improved the power quite a bit over my old Turnigy, but it's still not ballistic. I'm going to try an 11" prop with it next.
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Old Jul 05, 2011, 11:36 PM
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USA, CA, Santa Paula
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Well I'm as slow as molasses in winter when it comes to building. Had a lot of stuff going on with the 4th, grand kids and building a pantry (got to the wife happy) I did manage to get all the electronics soldered up. I would bet an experienced fomie builder could build it in a day easy. I received my T Pro MG 90 servos today, maybe I can maiden it this weekend.
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Old Jul 06, 2011, 09:41 AM
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Utah USA
Joined Jun 2002
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Kudos, for putting family first. Of course you can always sneak a way for a break to the hobby room every now and then.

I've put quite a few flights on mine now. I switched out to an 11x5.5 electric prop and it does much better at keeping air over the control surfaces in stalled manuevers. I've also hit it into the ground a few times, and it's proven to be durable. I pretty certain that I'll be carrying some of these new Techone designs on my site... I'm impressed.
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Old Jul 10, 2011, 10:29 AM
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Does anyone know a good motor I could use that is currently in stock with HK ? I was hoping to use a Turnigy 30-10B as I want it for prop hanging practice, but they are out of stock. The donkey option seems a bit low powered to be honest. I am based in the UK so ordering from HK along with the plane would be easiest.
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Old Jul 10, 2011, 10:57 AM
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Could this work:

http://www.rctimer.com/index.php?gOo...2&productname=

Model: BC3530-14
Motor size: Ф35*30mm
Shaft size: Ф5.0*47.5mm
Weight: 74g
KV(rpm/v): 1100
Max Power: 315W
Battery: 2-4Li-Po
Test Prop: 10X4.7/9x5
Ri(M Ω): 0.077
ESC(A): 50A
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Old Jul 11, 2011, 12:44 AM
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Slammm's Avatar
USA, CA, Santa Paula
Joined Mar 2007
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Quote:
Originally Posted by thecrawfords67 View Post
Does anyone know a good motor I could use that is currently in stock with HK ? I was hoping to use a Turnigy 30-10B as I want it for prop hanging practice, but they are out of stock. The donkey option seems a bit low powered to be honest. I am based in the UK so ordering from HK along with the plane would be easiest.
Hi,

I'm probably the last one to recommend an electric motor so please look carefully. HK sure has a lot of stuff on back order.

http://www.hobbyking.com/UNITEDHOBBI...er_1000kv.html

I'm an old nitro flyer and stopped flying for about 10 years, about three years ago I got back but flying helies and I'm just getting started with electric planes.

I haven't put mine together yet but I'm going to use a EFlight 480 with an 11X3.6, 11X7 or 12X6 all SF props (just what I have at hand) Can tell you that mine will be fat, looks like it will be about 700g without the lipo. I have 1300 mA 120.8 g and 1550 mA 139g. So on the lite side about 820.8 g.I picked up the donkey motor for mine but it just didn't seem very heavily built.

From what I have found a 10X4.7 prop is not enough. Khen went to an 11X5.5 with good results. Looks like the one I found is recommending a 10X5 prop, that ought to show how much I know

Hope this helps.
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Old Jul 11, 2011, 08:31 AM
WickedFunRC's Avatar
Utah USA
Joined Jun 2002
2,235 Posts
Quote:
Originally Posted by Slammm View Post
Hi,

I'm probably the last one to recommend an electric motor so please look carefully. HK sure has a lot of stuff on back order.

http://www.hobbyking.com/UNITEDHOBBI...er_1000kv.html

I'm an old nitro flyer and stopped flying for about 10 years, about three years ago I got back but flying helies and I'm just getting started with electric planes.

I haven't put mine together yet but I'm going to use a EFlight 480 with an 11X3.6, 11X7 or 12X6 all SF props (just what I have at hand) Can tell you that mine will be fat, looks like it will be about 700g without the lipo. I have 1300 mA 120.8 g and 1550 mA 139g. So on the lite side about 820.8 g.I picked up the donkey motor for mine but it just didn't seem very heavily built.

From what I have found a 10X4.7 prop is not enough. Khen went to an 11X5.5 with good results. Looks like the one I found is recommending a 10X5 prop, that ought to show how much I know

Hope this helps.
I bet that 1000KV Turnigy motor could turn an 11x5.5 prop for 3D (mixed throttle). I definitly prefer the 11" prop over the 10" for the extra air flow over the control sufaces in low speed/stalled manuevers. I really like this plane.
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Old Jul 11, 2011, 11:31 AM
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United States, TX, Houston
Joined Feb 2011
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Khen,

Whats the AUW of your model? I may have to get one when you get them in stock.
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Old Jul 11, 2011, 01:14 PM
WickedFunRC's Avatar
Utah USA
Joined Jun 2002
2,235 Posts
Quote:
Originally Posted by maxbee View Post
Khen,

Whats the AUW of your model? I may have to get one when you get them in stock.
Mine weighs in at 802.29 (28.3oz) with my 1300mAh 106.5g Electric Power batteries. With my 1300mAh Blue Lipos it's 16g heavier at 818.29g (28.86oz).

For my first TechOne order I opted for the new Tempo 3D and Mini Tempo 3D for my 3D plane offerings. I'm excited to give them a try. I'll follow up with the Yak shortly after I'm sure.

BTW, Tempos should be in by the end of the month.
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Old Jul 25, 2011, 11:59 PM
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USA, CA, Santa Paula
Joined Mar 2007
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Yak Maiden

Got to fly my Yak for the first time Sunday To soon to know what to really think. It was pretty windy but had three short flights before I found that I forgot to glue my aileron servos in Running a EFlight 480 and an 11.7 prop but I don't think that puts enough air over the control surfaces. I mounted the rudder and elevator servos per plans but the TPro MG90 were to heavy so I went with some HiTec HS-55 servos I had. With a 1550 mah battery it balanced about half way between the recommended fore and aft balance points and with a 1300 mah battery it's right on the aft point, 130mm from the LE.

Hey Khen, Statcounter is a great free tool for your site. I use it on my site and I get a lot of useful info about my visitors, what pages they hit, how long, popular pages, exit pages and on and on.

Sam
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Old Jul 26, 2011, 02:30 PM
WickedFunRC's Avatar
Utah USA
Joined Jun 2002
2,235 Posts
Hey Slammm, congrats on your maiden! I'll have to check out Statcounter, I use another stat application, I'm not sure how it compares.
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Old Jul 29, 2011, 11:20 AM
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Ok I have no maidened mine. I am really happy. I would echo previous comments about using a 11 inch prop. You get much more control authority with a 11 inch prop then a 10 inch one (especially at slow speeds). Just watch those amps. Mine was pulling 24 A with a 10x4.7 SF. I bet the 11 inch x3.7 will pull plenty more than 30A (I have not tested it yet). So I would suggest people don't run 30A speed controllers with a 11 inch prop. 40A ESC's might be safer. I have so far been unable to strip any gears with the hk900 servos I have installed despite my best efforts. I have tried a 1800 nanotech and 1300 longmax battery so far, and both can be set to give a 120 from leading edge cog. The 1300 is definitely more floaty. Overall I really like the plane, and I think it's going to be a lot of fun over what remains of the summer.

The motor below seems to work well for $12.50 shipped (but you need an adapter/mount kit as well). If you want to run more than a 10 inch prop I suggest you keep 1200kv or below. I also got the 1400kv version of that motor , it will pull 45A on a 10x3.8 so an 11 inch prop is out of the question for that kv range.
http://www.rctimer.com/index.php?gOo...2&productname=
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