HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jan 15, 2007, 02:04 AM
Part-Time Super Hero
MarkJayne's Avatar
Aberystwyth, UK
Joined Sep 2004
3,289 Posts
Quote:
Originally Posted by MKH
So how does the motor stay in place? Is there an actual mount, or just glue or strapping? Very nice bird, hope she handles the extra power.
MKH
MKH....

The motor is just glued in. I'll also strap a cable tie around just to be sure.

Deryck...

Don't worry. Nothing will ever replace my Easystar
The UHU looks better than I thought it would, so I'm pretty pleased.
I think that with a little extra re-enforcement, there's no reason why she shoudn't perform well under power.

Mark
MarkJayne is offline Find More Posts by MarkJayne
Reply With Quote
Sign up now
to remove ads between posts
Old Jan 19, 2007, 01:38 PM
Si Vis Pacem Para Bellum!
Doubletap's Avatar
PRC (People's Republic of Commiefornia)
Joined Jul 2005
9,602 Posts
Flight report?

Doubletap
Doubletap is offline Find More Posts by Doubletap
Reply With Quote
Old Jan 19, 2007, 02:03 PM
Part-Time Super Hero
MarkJayne's Avatar
Aberystwyth, UK
Joined Sep 2004
3,289 Posts
Not flown yet

Weather's been really windy over here, and it doesn't look like I'll even fly it over the weekend.

Now she's all built up, my AUW is 612g. Thats using a 3s 1500mah.

Mark
MarkJayne is offline Find More Posts by MarkJayne
Reply With Quote
Old Jan 20, 2007, 04:35 AM
Registered User
Jurgen Heilig's Avatar
53859 Niederkassel, Germany
Joined Sep 2000
18,758 Posts
Quote:
Originally Posted by MarkJayne
...
Now she's all built up, my AUW is 612g. Thats using a 3s 1500mah.

Mark
That is quite heavy (40% heavier) compared to my UHU at 436g with a 2sTP2100mAh.

Jürgen
Jurgen Heilig is offline Find More Posts by Jurgen Heilig
RCG Plus Member
Latest blog entry: InterModellBau 2014
Reply With Quote
Old Jan 20, 2007, 04:42 AM
Part-Time Super Hero
MarkJayne's Avatar
Aberystwyth, UK
Joined Sep 2004
3,289 Posts
Quote:
Originally Posted by Jurgen Heilig
That is quite heavy (40% heavier) compared to my UHU at 436g with a 2sTP2100mAh.

Jürgen
Yes I thought that when I read your post with the weight.

On the Graupner site, they say the AUW is 600g min so I can't be that far away. The only thing I've changed is the motor ( which is 20g lighter than the recommended ) 2x HS-81 servo's and the battery weighs in at 145g ( my 2s 2100 weighs 127g ).

Apart from that everything else is stock.

You tell me Jurgen

Mark
MarkJayne is offline Find More Posts by MarkJayne
Last edited by MarkJayne; Jan 20, 2007 at 05:03 AM.
Reply With Quote
Old Jan 20, 2007, 05:55 AM
Registered User
Jurgen Heilig's Avatar
53859 Niederkassel, Germany
Joined Sep 2000
18,758 Posts
Quote:
Originally Posted by MarkJayne
...
On the Graupner site, they say the AUW is 600g min so I can't be that far away. The only thing I've changed is the motor ( which is 20g lighter than the recommended ) 2x HS-81 servo's and the battery weighs in at 145g ( my 2s 2100 weighs 127g ).
...
Mark
The 600g, I assume, is with the standard NiCd battery. Are you sure, that your motor plus ESC and prop is really lighter than the recommended unit?

Your servos weigh more than twice than those recommended, and my 2sTP2100 weighs 95.8g (my rx is a Schulze Alpha 435).

Jürgen
Jurgen Heilig is offline Find More Posts by Jurgen Heilig
RCG Plus Member
Latest blog entry: InterModellBau 2014
Reply With Quote
Old Jan 20, 2007, 06:08 AM
Part-Time Super Hero
MarkJayne's Avatar
Aberystwyth, UK
Joined Sep 2004
3,289 Posts
Hi Jurgen,

I haven't weighed the ESC. I use a Quark 33Amp, so there maybe a little weight in that. I would take a guess that the motor and ESC probably weigh the same as the recommended 400 motor-ESC package. So that leaves the servo's and RX. The 81's weigh 16g each and I'm using a Multiplex RX-7 IPD, which is approx 25g.

I'm not to worried about the weight side of things. She still feels pretty light in the hand, and its not going to be an indoor flyer, so should be fine.

Mark
MarkJayne is offline Find More Posts by MarkJayne
Reply With Quote
Old Jan 20, 2007, 08:23 AM
Gravity's a harsh Mistress....
southernmd_man's Avatar
United States, MD, Lusby
Joined Jan 2007
2,801 Posts
Hello there, I've been eyeing the UHU for about a week now at Hobby-Lobby, and being a first time builder, and moving up from 2 channel control (HZ Commander 2), I'm wondering how hard of a build it is, and will I be able to control it? I've got a thing for pushers, and this UHU is just saying "Fly me!!".
southernmd_man is offline Find More Posts by southernmd_man
Reply With Quote
Old Jan 20, 2007, 09:41 AM
Registered User
Jurgen Heilig's Avatar
53859 Niederkassel, Germany
Joined Sep 2000
18,758 Posts
Quote:
Originally Posted by MarkJayne
Hi Jurgen,
...
I would take a guess that the motor and ESC probably weigh the same as the recommended 400 motor-ESC package. So that leaves the servo's and RX. The 81's weigh 16g each and I'm using a Multiplex RX-7 IPD, which is approx 25g.
...
Mark
Well, if we take the extra weight of the servos (2x8g), plus the extra weight of your rx (15g), plus the extra weight of your battery (49g), there is still a big difference of approx. 100g? Did you add a lot of reinforcements?

Jürgen
Jurgen Heilig is offline Find More Posts by Jurgen Heilig
RCG Plus Member
Latest blog entry: InterModellBau 2014
Reply With Quote
Old Jan 20, 2007, 09:43 AM
Registered User
Jurgen Heilig's Avatar
53859 Niederkassel, Germany
Joined Sep 2000
18,758 Posts
Quote:
Originally Posted by southernmd_man
Hello there, I've been eyeing the UHU for about a week now at Hobby-Lobby, and being a first time builder, and moving up from 2 channel control (HZ Commander 2), I'm wondering how hard of a build it is, and will I be able to control it? I've got a thing for pushers, and this UHU is just saying "Fly me!!".
For a beginner, the EasyStar is still the better model, as it is tougher.

Jürgen
Jurgen Heilig is offline Find More Posts by Jurgen Heilig
RCG Plus Member
Latest blog entry: InterModellBau 2014
Reply With Quote
Old Jan 20, 2007, 09:53 AM
Part-Time Super Hero
MarkJayne's Avatar
Aberystwyth, UK
Joined Sep 2004
3,289 Posts
Quote:
Originally Posted by Jurgen Heilig
Well, if we take the extra weight of the servos (2x8g), plus the extra weight of your rx (15g), plus the extra weight of your battery (49g), there is still a big difference of approx. 100g? Did you add a lot of reinforcements?

Jürgen
The only other thing I've done is upgrade the pushrods to a similar size as the Easystar, and I've glued some small magnets in for the canopy.

I suppose it all adds up.

Mark
MarkJayne is offline Find More Posts by MarkJayne
Reply With Quote
Old Jan 20, 2007, 10:44 AM
Registered User
Jurgen Heilig's Avatar
53859 Niederkassel, Germany
Joined Sep 2000
18,758 Posts
Quote:
Originally Posted by MarkJayne
The only other thing I've done is upgrade the pushrods to a similar size as the Easystar, and I've glued some small magnets in for the canopy.

I suppose it all adds up.

Mark
But not up to 100g on a 600g model!

Jürgen
Jurgen Heilig is offline Find More Posts by Jurgen Heilig
RCG Plus Member
Latest blog entry: InterModellBau 2014
Reply With Quote
Old Jan 20, 2007, 03:22 PM
Gravity's a harsh Mistress....
southernmd_man's Avatar
United States, MD, Lusby
Joined Jan 2007
2,801 Posts
Thanks for the advice...I wouldn't want to tear it first thing. The Easy Star it is!!!
southernmd_man is offline Find More Posts by southernmd_man
Reply With Quote
Old Jan 25, 2007, 11:21 AM
Part-Time Super Hero
MarkJayne's Avatar
Aberystwyth, UK
Joined Sep 2004
3,289 Posts
Maiden Flight Report...

Got to fly the UHU today. This is a fantastic plane to fly. She leaves your hand straight and level from the off, and glides forever. I took it pretty easy, but managed a few low flyby's, some loops and a couple of rolls. I even managed to launch, circle and land, without any power what so ever. I'm now looking forward in seeing what the UHU's like on the slope, should be interesting.

I've got a video of todays flight that should be up and running later on.

Mark
www.rcflights.co.uk
MarkJayne is offline Find More Posts by MarkJayne
Reply With Quote
Old Jan 25, 2007, 01:32 PM
Posts: 1,784,206
santeepat's Avatar
Santee, CA.
Joined May 2006
376 Posts
Mark,

Can you share a few thoughts on how she compares to the ES

Thanks.
santeepat is offline Find More Posts by santeepat
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Video New Elektro-UHU from Graupner Jurgen Heilig Electric Plane Talk 1 Jan 09, 2007 08:43 PM
Graupner Elektro-UHU cornj Aircraft - Sailplanes (FS/W) 0 Jan 02, 2005 02:02 PM
FS/FT Graupner Elektro-UHU in box stevesuarez Aircraft - Electric - Airplanes (FS/W) 2 Nov 09, 2002 10:49 PM
WTB - Graupner Elektro-UHU velvis Aircraft - Electric - Airplanes (FS/W) 0 Jan 29, 2002 09:28 PM
Article Recommendations From an Experienced Elektro-UHU Pilot skranish Electric Plane Talk 0 May 01, 1996 12:00 AM