Originally Posted by Heli Copter

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)

Originally Posted by loopsy

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

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.

Originally Posted by Hixxer

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.

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?

Was typing while you were Ravikoth
Thanks for the info!

Originally Posted by loopsy

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 ....

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

Originally Posted by Boostoman

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!

Do you need to open the wing to do this reinforcement or can it be done via the retract well only?

Has anyone put in some pilots for this amazing model? Im struggling to find anything, dont really know anything about dimensions either.

Its here
Beautiful plane , great lines , dry fitting tonight , going together well.

I need to rethink my retract idea

Originally Posted by AdMan

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

How about these struts with x-flights changesun 46 retracts .

Originally Posted by vettster

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.

Originally Posted by AdMan

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.