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Old Jul 31, 2012, 08:32 AM
3D Hack
JC Spohr's Avatar
United States, IL, Glen Carbon
Joined Jul 2010
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Has anyone that has flown the plane taken any measurements for the control surfaces?

What degree of deflection for full throws?

I stopped building mine at the point of cutting in the aileron servos because I think the MG-14's with stock arms yielding only 20* of aileron is not enough.

May not be enough on the elevator either.

I'm thinking a change to larger servos (aka Twisted's 18g) and extended arms is in order.

JC
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Old Jul 31, 2012, 09:04 AM
Limb stalker
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Taft, TN
Joined Aug 2010
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I increased the aileron throws on my transmitter to 150% with HS65 MG's. MUCH better. I don't have a throw gauge but I'm guessing I get at least 30 to 35 degrees now. My servos are mounted vertical. I wonder if you would get any more throw mounting them horizontal?
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Old Jul 31, 2012, 10:34 AM
Don't give in to gravity
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USA, FL, Palm Harbor
Joined Dec 2009
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Quote:
Originally Posted by JC Spohr View Post
Has anyone that has flown the plane taken any measurements for the control surfaces?

What degree of deflection for full throws?

I stopped building mine at the point of cutting in the aileron servos because I think the MG-14's with stock arms yielding only 20* of aileron is not enough.

May not be enough on the elevator either.

I'm thinking a change to larger servos (aka Twisted's 18g) and extended arms is in order.

JC
More aileron deflection would be nice even tho mine is doing some nice 3d with the standard arms that come with the th 18.8 gram servos

The elevator is fine with the 18.8 servo and the long servo arm that comes in the kit.
Il post some video tonight and it will give you an idea what the standard set up will do
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Old Jul 31, 2012, 10:38 AM
3D Hack
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United States, IL, Glen Carbon
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Quote:
Originally Posted by Gravitycheat View Post
More aileron deflection would be nice even tho mine is doing some nice 3d with the standard arms that come with the th 18.8 gram servos

The elevator is fine with the 18.8 servo and the long servo arm that comes in the kit.
Il post some video tonight and it will give you an idea what the standard set up will do
Thanks.

What battery are you using, 1800 or 2200?
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Old Jul 31, 2012, 11:44 AM
Don't give in to gravity
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Originally Posted by JC Spohr View Post
Thanks.

What battery are you using, 1800 or 2200?
1800 but plan on running 2200 ad well
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Old Jul 31, 2012, 06:33 PM
Don't give in to gravity
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USA, FL, Palm Harbor
Joined Dec 2009
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Some fun with the Sbach
Shawn DuBois Flying the Sbach 48.8 inch EPP by RC Factory (4 min 56 sec)
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Old Jul 31, 2012, 07:12 PM
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Nice video Shawn! You Rock! Enjoyed the music.
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Old Jul 31, 2012, 07:17 PM
3D Hack
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United States, IL, Glen Carbon
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Originally Posted by Gravitycheat View Post
Some fun with the Sbach
https://vimeo.com/46719396
NICE!

Q1: Were you really running a 10x4.7 prop as stated at the end of the video??

Q2: CG at 100mm?

JC
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Old Jul 31, 2012, 07:25 PM
Don't give in to gravity
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USA, FL, Palm Harbor
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Quote:
Originally Posted by JC Spohr View Post
NICE!

Q1: Were you really running a 10x4.7 prop as stated at the end of the video??

Q2: CG at 100mm?

JC
I was running a 10 x 4.7. I had to small of a motor on it and was running an 11 x 7 and the motor was burning up. so to be able to fly, i put a 10 x 4.7 on so i did not burn up the motor. i have the right motor coming. Was just bad motor planning on my part.

My CG is closer to 105 or 110 and seemed to be balanced well. I still only have 5 flight on this bird and will better know my Cg liking after a weekend of flying the Sbach. I'll let you know.

----------------------------
Thanks Brad. and thanks for all your help with the video!!!!
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Old Aug 01, 2012, 01:36 AM
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United Kingdom, Aviemore
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Good going Shawn, I enjoyed that. Didn't look like you any problems with low throws, is that as it was or did you get more throw out of it? the roll rate looked fine.
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Old Aug 01, 2012, 03:47 AM
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Joined Oct 2011
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WOW! awesome Video Shawn. Thanks for the motivational Flying.
I crashed my Sbach Pretty hard today behing that barn in my vid. Stupid ar6200 Rx browned out on me while I was attempting an "Elevator". It Nose planted from a good 80-90 ft. One thing good is that my trims was spot on, for that sucker went litarally straight down.
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Old Aug 01, 2012, 05:55 AM
Don't give in to gravity
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Quote:
Originally Posted by Aviefly View Post
Good going Shawn, I enjoyed that. Didn't look like you any problems with low throws, is that as it was or did you get more throw out of it? the roll rate looked fine.
Thanks Dan. Every thing is standard "out of the box" for the video. I will be adding longer aileron arms for more throw. Mainly personal preference, but as you can see its good with the standard set-up.

Quote:
Originally Posted by AirHermit View Post
WOW! awesome Video Shawn. Thanks for the motivational Flying.
I crashed my Sbach Pretty hard today behing that barn in my vid. Stupid ar6200 Rx browned out on me while I was attempting an "Elevator". It Nose planted from a good 80-90 ft. One thing good is that my trims was spot on, for that sucker went litarally straight down.
Don't feel to bad. I handed the radio to a friend and we did the same maneuver from about 50 foot. My fault. I put it in pretty hard just prior and did not check things out. Elevator let lose so my friend had no control.

On the bright side…..very little damage and what there was can be fixed very easly with welders and 5 minutes. Gotta love EPP.
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Old Aug 01, 2012, 06:03 AM
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United States, VA, Ashburn
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Originally Posted by Gravitycheat View Post
1800 but plan on running 2200 ad well
Only 1800's on a 48"? Id expect at least a 2200. Have you tried 4S on this beast yet?
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Old Aug 01, 2012, 08:43 AM
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Gravitycheat.... looks like it flies nice... about half way thru my build... hope to have it in the air by the end of the week-end.
.
cdee
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Old Aug 01, 2012, 01:48 PM
Don't give in to gravity
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USA, FL, Palm Harbor
Joined Dec 2009
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Originally Posted by RCAddict16 View Post
Only 1800's on a 48"? Id expect at least a 2200. Have you tried 4S on this beast yet?
1800 to keep it lite. I will be running 2200s. 4 s!!!!
It would be a beast on 4s. Can you say ovet kill.

[QUOTE=cdee;22324770]Gravitycheat.... looks like it flies nice... about half way thru my build... hope to have it in the air by the end of the week-end.
.
cdee

Look forward to hearing your opinion cdee
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