Extreme Flight 70" Extra 300 EXP - build/fly/video - Page 132 - RC Groups
Thread Tools
Jan 17, 2013, 12:00 AM
Watts is where its at!
racerxky's Avatar
Would putting a OS GT33 in this thing be overkill?
Sign up now
to remove ads between posts
Jan 18, 2013, 04:22 PM
Facts, Logic, 3D
Tom K.'s Avatar
Quote:
Originally Posted by racerxky
Would putting a OS GT33 in this thing be overkill?
More Power!

Tim Allen Grunt Collection (4 min 2 sec)


--Tom K.
Jan 18, 2013, 04:28 PM
Watts is where its at!
racerxky's Avatar
We are putting that motor in 71" Slicks and the like so I don't *think* it would be too heavy. Also, I like that the stabs come off on the Extreme Flight so it would be easy to transport.
Jan 19, 2013, 07:36 AM
Registered User
Stupid question but does it make much difference if I use the inner hole on the fibreglass arm combined with a more inner hole on the servo arm...

Rather than using a more outer hole on both?
Jan 19, 2013, 07:56 AM
Shut up and Fly!!!
jw357_23043's Avatar
Quote:
Originally Posted by cookci
Stupid question but does it make much difference if I use the inner hole on the fibreglass arm combined with a more inner hole on the servo arm...

Rather than using a more outer hole on both?
I have mine on the inner hole on the horn and outside hole on the the servo arm. I had them both set on the outside but the servo was binding to much for my taste. I try to minimize the use of EPA and/or sub trim during a build as I believe IMO that it is better to get it close to center without the radio adjustments first. Then fine tune with the radio if necessary. Another principal to remember is when your at full throw the control rod itself should be at 90 degrees in relation to the surface and not angled in any way as this can cause unnecessary stress on the servo.
Jan 20, 2013, 12:13 PM
Registered User
Quote:
Originally Posted by jw357_23043
I have mine on the inner hole on the horn and outside hole on the the servo arm. I had them both set on the outside but the servo was binding to much for my taste. I try to minimize the use of EPA and/or sub trim during a build as I believe IMO that it is better to get it close to center without the radio adjustments first. Then fine tune with the radio if necessary. Another principal to remember is when your at full throw the control rod itself should be at 90 degrees in relation to the surface and not angled in any way as this can cause unnecessary stress on the servo.
Running cheap servos I find the opposite.

I'm using maximum EPA on my servos with the nearest hole to the centre possible to gain the correct deflections.


To me it seems to increase torque, accuracy and centering ability.
Jan 20, 2013, 12:24 PM
It's gone...
_OZ_'s Avatar
Check this link out for a good explanation of servo setup.
http://www.modelairplanenews.com/blo...set-up-servos/
Jan 20, 2013, 05:30 PM
Shut up and Fly!!!
jw357_23043's Avatar
Quote:
Originally Posted by cookci
Running cheap servos I find the opposite.

I'm using maximum EPA on my servos with the nearest hole to the centre possible to gain the correct deflections.


To me it seems to increase torque, accuracy and centering ability.
Correction, I still use EPA however I don't want them to bind at full throw either.
Jan 20, 2013, 05:42 PM
Just flitting about!!
bigroger's Avatar
Quote:
Originally Posted by jw357_23043
I have mine on the inner hole on the horn and outside hole on the the servo arm. I had them both set on the outside but the servo was binding to much for my taste. I try to minimize the use of EPA and/or sub trim during a build as I believe IMO that it is better to get it close to center without the radio adjustments first. Then fine tune with the radio if necessary. Another principal to remember is when your at full throw the control rod itself should be at 90 degrees in relation to the surface and not angled in any way as this can cause unnecessary stress on the servo.
How do you avoid the ball joint binding on the control arm if you use the inside hole?

I tried it on my elevator on the 70" and found it bound pretty quickly at full deflection.
Jan 20, 2013, 06:30 PM
Shut up and Fly!!!
jw357_23043's Avatar
Quote:
Originally Posted by bigroger
How do you avoid the ball joint binding on the control arm if you use the inside hole?

I tried it on my elevator on the 70" and found it bound pretty quickly at full deflection.
Decrease your EPA to the point it stops binding. How much of a gap do you have between elevator and stab? Another thing to remember is you don't need 80 degrees of throw on this plane to 3D. I have 45 degrees of throw on mine.
Jan 20, 2013, 07:37 PM
Just flitting about!!
bigroger's Avatar
I got about 1mm gap and no trouble getting 55deg throw on the outer holes with 120%EPA.

I sorta was looking for 65degree of throw but once I got the cg back to about the right area it has heaps of pitch authority with 55deg I found.

Just used to my 60" birds that have 60+ degree of elevator throw but this doesn't need it and doesn't throw around like the 60" birds do.
Jan 20, 2013, 08:40 PM
Shut up and Fly!!!
jw357_23043's Avatar
Quote:
Originally Posted by bigroger
I got about 1mm gap and no trouble getting 55deg throw on the outer holes with 120%EPA.

I sorta was looking for 65degree of throw but once I got the cg back to about the right area it has heaps of pitch authority with 55deg I found.

Just used to my 60" birds that have 60+ degree of elevator throw but this doesn't need it and doesn't throw around like the 60" birds do.
The 70" EXP is a total different animal. It doesn't fly like the smaller birds. It has a larger model personality if you know what I mean.
Jan 20, 2013, 08:50 PM
Just flitting about!!
bigroger's Avatar
Yep.

Took a little time to understand it. It flys more like a giant scale and graceful.

I was expecting something like my 70" slick personality but it doesn't have the rudder as big as a slick.
I found it flys a lot nicer lines than the slick but not as violent in the aggressive stuff.

I'd love to see it with EXP size elevators one day, I think it would be sweet as anything in that scale.
Jan 21, 2013, 12:07 AM
Shut up and Fly!!!
jw357_23043's Avatar
Quote:
Originally Posted by bigroger
Yep.

Took a little time to understand it. It flys more like a giant scale and graceful.

I was expecting something like my 70" slick personality but it doesn't have the rudder as big as a slick.
I found it flys a lot nicer lines than the slick but not as violent in the aggressive stuff.

I'd love to see it with EXP size elevators one day, I think it would be sweet as anything in that scale.
The 70" is an EXP.
Jan 21, 2013, 01:25 AM
Just flitting about!!
bigroger's Avatar
Quote:
Originally Posted by jw357_23043
The 70" is an EXP.
Yes, but it pre-dates the exaggerated elevators on the 48 and 60" EXP planes.

I would like it to have an elevator like the 60" EXP planes.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion EXTREME FLIGHT 48" Extra 300 EXP. VIDEO ADDED! hemituda 3D Flying 10134 Nov 01, 2017 02:31 AM
Discussion Extreme Flight RC 48" Extra 300 EXP Build mxcop 3D Flying 404 Apr 14, 2015 09:07 PM
Discussion Extreme Flight 70" Extra 300 EXP!?!?!? Safety Hawk 3D Flying 104 Sep 10, 2012 12:33 PM
Sold NEW IN BOX Extreme Flight Extra 300 EXP ARF 48" red - will ship xraydoc Aircraft - Electric - Airplanes (FS/W) 6 Jan 16, 2010 09:55 PM
Video Extreme Flight RC Extra 300 EXP 48" Teaser video! Jvdo Electric Plane Talk 6 Oct 21, 2009 03:48 PM