Espritmodel.com Telemetry Radio
Reply
Thread Tools
Old Sep 24, 2011, 01:48 PM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Covered! Photos of the cloth + CA ZAP glue. These are pre-sanding and it smoothed right out. I've decided to use gray primer, then white paint.
studioRS is online now Find More Posts by studioRS
Last edited by studioRS; Oct 06, 2011 at 11:24 AM. Reason: added photo
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 24, 2011, 07:43 PM
I'm torquing to you!
Mr Kamikaze's Avatar
Wattle Grove NSW Australia
Joined Nov 2006
7,360 Posts
I assume you are painting over the flowers?
Mr Kamikaze is online now Find More Posts by Mr Kamikaze
RCG Plus Member
Latest blog entry: Hucking my Katana MX
Reply With Quote
Old Sep 24, 2011, 08:02 PM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Quote:
Originally Posted by Mr Kamikaze View Post
I assume you are painting over the flowers?
Yes, painting with light spritzes of Krylon gray primer and Krylon gloss white, quick spray can job. The flowers are a tribute to Suisse edelweiss
studioRS is online now Find More Posts by studioRS
Reply With Quote
Old Sep 26, 2011, 10:04 AM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Painting came out nice. I had a tough time trying to balance with a 2S 1300mAh, needed around 105grams in the nose for a battery weight.

Bingo! Drop a 3S 1300mAh in

New adjusted AUW is 730grams with
- 3S 1300mAh
- HK 30A Blue ESC
- ASK-21 spinner and 9.5x6 prop
- Fibrecloth+CA covering
- Primer
- White paint
- Pilot
- New aluminum wing spar dihedral rod
- Stickers

The strength of the upgraded fuselage is amazing, hopefully enough for my fledgling pilot skills! I'll test this out on the 9.5x6 propeller, might have to swap blades to the 10.5x6. Hopefully the motor keeps it's cool...
studioRS is online now Find More Posts by studioRS
Reply With Quote
Old Sep 26, 2011, 01:07 PM
Registered User
Kingdom of The Netherlands
Joined Nov 2009
154 Posts
Although I am not from Down Under I like to share some pictures with you guys.











Picture Credits: Tim

Happy Flying
Greets from The Netherlands
Eric
HBFP NL is offline Find More Posts by HBFP NL
Reply With Quote
Old Sep 26, 2011, 06:08 PM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Totally awesome photos, really like the first one. I've watched some of your videos too, very impressive, the one following the ASW28 near the building is great! I'll let you take the honor of posting these up.

The gents down unnda love our posts. BTW, this is the definitive ASW-28 thread, keep the info flowing...
studioRS is online now Find More Posts by studioRS
Reply With Quote
Old Sep 26, 2011, 09:16 PM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Motor kv and dimensions

I performed a bench test with the following:

- New HK 30A blue ESC, brake programmed on
- 9.5x6 folding propeller
- Parkzone 3S 1300mAh, 15C continuous, 20C burst
- Stock ASW-28 1000kv motor, don't know any more specs on it.
- AUW is 730 grams (25.75 oz)

Ran it on the bench for 1 min 30 sec half throttle slowed it down to 1/2 throttle for 15 more seconds then stop. Ran for 20 sec 1/4 throttle, then again WOT for 1 min solid (WOW ) and let it run slowly to cool, then shut it down.

Battery wasn't warm
ESC was cool
Motor was HOT

Immediately put a small fan on the motor to cool it off and started to remove this as you could tell it was just hot enough to start degrading the oil in the bearings, although no smell, no smoke and still runs fine. I removed the motor and added a few drops of Tri-Flow oil on the bearings and all is well. Obviously, the amps to the motor are too high.

Motors listed in this thread previously are NLA from HK and the Turnigy 2210-1400kv arrived but won't work, dimensions aren't right.

Qs. Would increasing the propeller to a 10.5x6 lower the amp draw on the motor?

What is the preferred replacement upgrade motor with my above set-up? TIA Please help me locate proper motor configuration, still slightly perplexed with the calculations on what to choose.
studioRS is online now Find More Posts by studioRS
Reply With Quote
Old Sep 27, 2011, 02:08 AM
Registered User
Kingdom of The Netherlands
Joined Nov 2009
154 Posts
Quote:
Originally Posted by studioRS View Post
Totally awesome photos, really like the first one. I've watched some of your videos too, very impressive, the one following the ASW28 near the building is great! I'll let you take the honor of posting these up.

The gents down unnda love our posts. BTW, this is the definitive ASW-28 thread, keep the info flowing...
Thank you very much for the compliments. Not sure if you mean the next video, it is a nice, rare and short one for sure. Filmed with a GoPro from an easy star.

HobbyKing ASW 28 | Chase view in HD (0 min 35 sec)
HBFP NL is offline Find More Posts by HBFP NL
Reply With Quote
Old Sep 27, 2011, 10:28 AM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Yes, that is the your video I watched! So kewl, thank you!
studioRS is online now Find More Posts by studioRS
Reply With Quote
Old Sep 27, 2011, 10:44 AM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Ok, so I've been reading over on the HK Minimoa thread and the ASW-28 has relatively the same DST-1200 bell style motor (same as the Art-Tech ASK-21 and Art-Tech Minimoa), except the ASW-28 is labeled DST-1000, which would indicate a 1000kv.

I think I've figured it out. I need to buy a watt meter... duho.

Also, decreasing the propeller size will decrease the watts and amps produced, is this correct?

On second thought, will the Turnigy L2210-1400 bell style motor I bought work?
http://www.hobbyking.com/hobbyking/s...dproduct=18544

I'm sure I can get it to mount up, just want to know if the 9.5x6 propeller is ok with the 3S 1300mAh, 15C and 30A ESC?

If not, should I drop down to a smaller propeller like a 8x4.5?

Watt meter will tell...

Turnigy L2210-1400 Spec.
Kv: 1400 rpm/v
Voltage:7.4~11.1v (2~3s)
No load Current: 1.1A
Max Current: 24A
Max Power: 210W
Shaft Size: 3mm
Shaft Length: 28mm
Dimension: 28mm x 17mm
Thrust: 880g
Weight: 50g

http://www.hobbyking.com/hobbyking/s...dproduct=18544
studioRS is online now Find More Posts by studioRS
Reply With Quote
Old Sep 27, 2011, 01:51 PM
Registered User
Kingdom of The Netherlands
Joined Nov 2009
154 Posts
Decreasing the prop size will give less amp draw and less Watts.
However when you increase the pitch when decreasing the size new numbers can come up.

Watt meters are cool gadgets. I have a SuperBrain ESC which helped me great to deceide how big I could go. I love data

Good luck with your quest

HappyFlying
Eric
HBFP NL is offline Find More Posts by HBFP NL
Last edited by HBFP NL; Sep 27, 2011 at 01:51 PM. Reason: Type O
Reply With Quote
Old Sep 27, 2011, 02:41 PM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Info overload... I think I figured it out, reducing prop size to 8x6 or 7x4.5 will help.

http://brantuas.com/ezcalc/neumotorscalc.asp

added advanced calculator link

http://www.ecalc.ch/motorcalc_e.htm
studioRS is online now Find More Posts by studioRS
Last edited by studioRS; Sep 28, 2011 at 08:47 PM. Reason: added advanced calculator link
Reply With Quote
Old Sep 28, 2011, 08:33 PM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
I found the DST-1000kv motor specs from the manufacturer.

http://www.alibaba.com/product-gs/42...LDC_Motor.html

DST-1000kv
Weight: 53g
No-load Current @ 11.1V: 1.0A
Resistance: 0.139ohm
Max Power: 250W
Lipo Cells
2S, Current: 10A, ESC: 12A, Prop: 10x4.7, Thrust: 525g
2S, Current: 12A, ESC: 15A, Prop: 11x4.7, Thrust: 600g
3S, Current: 14A, ESC: 18A, Prop: 9x4.7, Thrust: 800g

(added info)
studioRS is online now Find More Posts by studioRS
Last edited by studioRS; Sep 29, 2011 at 10:25 AM.
Reply With Quote
Old Oct 06, 2011, 11:12 AM
Klassische Segelflugzeuge
studioRS's Avatar
Northern Vermont
Joined Jul 2010
1,328 Posts
Updates...

I've purchased a Graupner 8x4.5 folding propeller, my first German one to boot! WOW what a work of art. Uber light, fine carbon reinforced plastic. The only mod necessary to fit into the ASK-21 hub and spinner was to drill out the bolt holes a little.

In attempts to cool the little 1000kv motor, I carved out some small foam angles on either side. Since I've fibrecloth+CA'ed the fuselage, I can get the area thin, as it is strong. After doing this last night and examining it more in depth, I think I'll be removing the remaining section underneath the motor and add some fibrecloth+CA back onto this. Any un-necessary EPO that can be removed will be good as it acts like a heat insulator too.

On the left side of the motor pointing forward ( or looking at it from the front - your right) the distance between the backplate of the hub and fuselage opening is more pronounced and I'm sure air will circulate and or heat be removed. Also, when removing the foam inside behind the motor bulkhead, has opened up the flow. My canopy has large air gaps in the front (don't really like they way the canopy sits and might build a balsa replacement) so I'm not worried about air getting trapped.
I do however, need to fabricate a large cooling exit under the back part of the fuselage and might sneak in one of my custom kewlartdesign.com fixed landing gear setups.

Using the great calculator above in the links, I've sampled what a stock configuration and the new Graupner 8x4.5 on 3S 1300mAh 20C and created the two charts. Hopefully this helps someone, it sure has with me. Next up is the wattmeter.
studioRS is online now Find More Posts by studioRS
Last edited by studioRS; Oct 06, 2011 at 11:31 AM.
Reply With Quote
Old Oct 08, 2011, 04:48 PM
Not a newbie anymore..
skyhawk newbie's Avatar
Ireland, Cork
Joined Oct 2010
2,027 Posts
Quote:
Originally Posted by studioRS View Post
Covered! Photos of the cloth + CA ZAP glue. These are pre-sanding and it smoothed right out. I've decided to use gray primer, then white paint.
Just wondering...
The Cloth you use is it cotton or Nylon ....
Once coverd , can you then fly your glider in higher wind speeds..
Now that winter is coming we get winds of 25/30mph + coming off the Atlantic , on our slope ...

Sean..
skyhawk newbie is offline Find More Posts by skyhawk newbie
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
HF Model: ASW28 Fully Molded, 3m rthorne Aircraft - Sailplanes (FS/W) 9 Jun 06, 2005 04:09 PM
ST MODEL Lipos? OzDragonFlyer Batteries and Chargers 2 Mar 14, 2005 03:21 AM
Motor for ST model YAK TooLyr 3D Flying 7 Oct 26, 2004 04:17 PM
Any Experiences with ST Model Lithiums? CustomPC Batteries and Chargers 8 Jun 09, 2004 10:15 PM
ST Model KA-V1000R lipo charger jbird Batteries and Chargers 3 Nov 11, 2003 07:38 PM