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Old Nov 18, 2012, 04:44 PM
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United States, GA, Alpharetta
Joined Feb 2009
402 Posts
Quote:
Originally Posted by Heli Copter View Post
If you put it in ounces, I think you'll get a lot more response. I would want the equivalent of an HS 5085 or 50-60 ounces of torque.
2.5KG/CM = 34.69 inch ounces.
Go here for a useful conversion calculator. http://www.towerhobbies.com/help/convcalcs.html

I'm using 2.5KG servos in mine (still building). I think they will be fine. As a reference a HS65-MG is 30.55 inch ounces (2.2KG)
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Old Nov 18, 2012, 05:29 PM
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Australia, NSW
Joined Mar 2011
220 Posts
Quote:
Originally Posted by loopsy View Post
Donīt make the mistake -NOT- to reinforce. There are for sure some examples
of hard landings where the structure did not collapse, but if you open the wing
and look from the "inside" on the whole construction, it is quite obvious that sooner
or later the gear will punch through the wing. Itīs simply too weak for the long term!

Herb showed in his build-thread how an reinforcement can be done with little effort.
I do the same currently, however with a slightly different approach. Instead of
using plywood-sandwich everywhere, I will use a thin layer of glassfibre which
I will epoxy into the wheel well, using a brush to reach into the corners.
Small pieces of glassfibre will be attached where necessary (instead of one big
piece) in layers. I prepare the small pieces with a scissor and then use appropriate
sizes wherever I add the glass...

Especially the joints of the spars with the wing skin will receive a nice
reinforcement which makes the whole gearmount durable. With little weight increase only in comparison to the gain in strength !

I think its worth to invest 2 hours for the job...
Hi Loopsy

Any chance of some pictures, lucky I read this as i'm used to of hard landings and was wondering myself if i should reinforce or not .Is the post that you mentioned in this thread or some other

Thanks mate
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Old Nov 19, 2012, 02:26 AM
RAVI KOTHARI
Bombay,India
Joined Nov 2005
257 Posts
I Have the HXT 900's on Elevator, and 9Gm sized 2.2 KG Torque MG's on everything else,
works like a champ.
Absolutely no problem, Jet isn't that fast to cause stresses on servo's with 2.2 on Tap.



Quote:
Originally Posted by Hixxer View Post
Can anyone tell me if 2.5kg mg servos will be ok for all control surfaces on this airframe?
Mine came today, ever so slightly damaged but nothing a little glass and paint won't fix up. Lovely looking bird that's for sure.
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Old Nov 19, 2012, 02:29 AM
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United Kingdom, England, Nantwich
Joined Jan 2012
255 Posts
Thanks for the link Rfodor, I dont get ounces at all, too long in the metric system
I have two 3.5kg/50oz I could use along with the 2.5's. I guess the elevator and flaps need the larger torques generally?
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Old Nov 19, 2012, 02:30 AM
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United Kingdom, England, Nantwich
Joined Jan 2012
255 Posts
Was typing while you were Ravikoth
Thanks for the info!
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Old Nov 19, 2012, 02:42 AM
Hi, I am Michael from Taipei
Taiwan, 北市
Joined May 2012
297 Posts
Quote:
Originally Posted by loopsy View Post
Donīt make the mistake -NOT- to reinforce. There are for sure some examples
of hard landings where the structure did not collapse, but if you open the wing
and look from the "inside" on the whole construction, it is quite obvious that sooner
or later the gear will punch through the wing. Itīs simply too weak for the long term!

Herb showed in his build-thread how an reinforcement can be done with little effort.
I do the same currently, however with a slightly different approach. Instead of
using plywood-sandwich everywhere, I will use a thin layer of glassfibre which
I will epoxy into the wheel well, using a brush to reach into the corners.
Small pieces of glassfibre will be attached where necessary (instead of one big
piece) in layers. I prepare the small pieces with a scissor and then use appropriate
sizes wherever I add the glass...

Especially the joints of the spars with the wing skin will receive a nice
reinforcement which makes the whole gearmount durable. With little weight increase only in comparison to the gain in strength !

I think its worth to invest 2 hours for the job...
Can't agree more ....
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Old Nov 19, 2012, 03:07 AM
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Boostoman's Avatar
Oman, Masqat
Joined Apr 2010
320 Posts
Loopsy,

thanks for the advise , can you share pictures of yur reinforcement. I was also planning to use fiberglass cloth, I would like to see how you did it
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Old Nov 19, 2012, 06:51 AM
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AdMan's Avatar
Australia, SA, Ingle Farm
Joined Feb 2010
810 Posts
Quote:
Originally Posted by Boostoman View Post
Loopsy,

thanks for the advise , can you share pictures of yur reinforcement. I was also planning to use fiberglass cloth, I would like to see how you did it
I might just have to go steal some of my old mans fibreglass cloth and do this to mine. good to know!
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Old Nov 19, 2012, 09:24 AM
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United Kingdom, England, Nantwich
Joined Jan 2012
255 Posts
Do you need to open the wing to do this reinforcement or can it be done via the retract well only?
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Old Nov 20, 2012, 11:50 PM
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AdMan's Avatar
Australia, SA, Ingle Farm
Joined Feb 2010
810 Posts
Has anyone put in some pilots for this amazing model? Im struggling to find anything, dont really know anything about dimensions either.
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Old Nov 21, 2012, 05:48 PM
Mile High EDF
United States, CO, Denver
Joined Jul 2011
916 Posts
Its here
Beautiful plane , great lines , dry fitting tonight , going together well.

I need to rethink my retract idea
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Last edited by 420flyboy; Nov 21, 2012 at 08:50 PM. Reason: Added pic
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Old Nov 21, 2012, 09:08 PM
"Take Off" eh!
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Canada, ON, Beeton
Joined Aug 2008
3,020 Posts
Quote:
Originally Posted by AdMan View Post
Has anyone put in some pilots for this amazing model? Im struggling to find anything, dont really know anything about dimensions either.
Got them from HK..but a recent search doesnt show them anymore. Sorry
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Old Nov 21, 2012, 09:12 PM
Mile High EDF
United States, CO, Denver
Joined Jul 2011
916 Posts
How about these struts with x-flights changesun 46 retracts .
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Old Nov 21, 2012, 11:24 PM
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Australia, SA, Ingle Farm
Joined Feb 2010
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Quote:
Originally Posted by vettster View Post
Got them from HK..but a recent search doesnt show them anymore. Sorry
Yeah thats what I thought.. looking everywhere on there for them. Oh well, guess I can stop worrying about it and look elsewhere. Thanks.
Adam.
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Last edited by AdMan; Nov 21, 2012 at 11:37 PM.
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Old Nov 22, 2012, 12:33 AM
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Oman, Masqat
Joined Apr 2010
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Quote:
Originally Posted by AdMan View Post
Yeah thats what I thought.. looking everywhere on there for them. Oh well, guess I can stop worrying about it and look elsewhere. Thanks.
Adam.
Im using the same pilots I had on my crashed HK 90mm hawk they seem.to fire ok but are slightly too big .
The dimensions of the pilots is Hight:82mm, shoulder width:78mm, depth 46mm hope this helps.
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