RE: Redesigned 28% Extra 300 Build / Questions  
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RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 5:56:39 AM   
bobzilla



Posts: 886
Joined: 8/4/2004
From: Henderson, NV, USA
Status: offline 		Good luck Mikey..with first flight. It sound like you got thing checked out well, but I always go over the servo arm screws, servo screws and cowling/canopy bolts after 1st flight..vibration can be a killer!!

Have fun!
Bobzilla
www.airbornelizards.com

(in reply to BadBoy__MadMikey)
       Post #: 126

RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 6:32:55 AM   
flatlandmike



Posts: 1162
Joined: 10/6/2003
From: lexington, KY, USA
Status: offline 		Ok I got mine almost done so close I got to get the final weight. It was 4 oz over what I wanted but is an exceptable 16# 12oz. I fear some huge dmg for not reinforcing things from my previous exp with another plane so I added some epoxy here and there and 2 bottles of CA.

Im very happy with the way the plane looks and has come out with weight. I will maiden it Sunday or Monday because there rain forecasted for the next few days.

By the way I found were the batteries need to be with my da50 slim line Pitts muffler. 1 Fromeco 2400 ignition battery beside the tank. And the 4800 fromeco Rx battery right behind the hatch in the turtle deck. I guarantee you I will build another one of these with the bme55 this winter or beginning of next season.


< Message edited by flatlandmike -- 9/15/2006 7:09:19 AM >

_____________________________

www.jerseymodeler.com
Special thanx to The Crew Mike B. Jim Z. Ed J. Jim S.

(in reply to bobzilla)
       Post #: 127

RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 10:56:03 AM   
rctom



Posts: 5280
Joined: 5/8/2002
From: Flower Mound (near Dallas), TX, USA
Status: offline
quote:

guys becareful with the hitec digital servos. the screws will work out very easy. put some locktight on them , also keep some 2.5mm screws for spares cause no mattter what u do vibration will work them out!!!


mikey


I recommend that you do not use loctite on servo screws. Once they are installed you may never get the screw out again. Red loctite is sertain to do this, blue may or may not work.

Instead buy a package of the 2.5mm (or 2.6 mm, I'm not sure which is correct) allen head screws from microfasteners. These will allow you to tighten the screw properly and still remove it when the time comes. I've never had one of these fail if it was tightened properly.

If you use loctite, expect the screw's head to break off when you try to remove it, requiring that the gears be replaced.

TF

(in reply to BadBoy__MadMikey)
       Post #: 128

RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 12:15:22 PM   
bobzilla



Posts: 886
Joined: 8/4/2004
From: Henderson, NV, USA
Status: offline 		Great advice RCTOM....had that happen..and used a dremmel to cut a slice thru one so a wide blade could get it out.
What about some rubber cement? or someother soft glue?

Bobz

(in reply to rctom)
       Post #: 129

RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 2:40:39 PM   
BadBoy__MadMikey


 

Posts: 306
Joined: 10/1/2004
From: Spartanburg, SC, USA
Status: offline 		i ment to say i was using med strength locktite. so far i have never had a problem getting the screws out. but i know guys who have used red locktite and never got them out!!!!

mikey

(in reply to bobzilla)
       Post #: 130

RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 4:41:04 PM   
rctom



Posts: 5280
Joined: 5/8/2002
From: Flower Mound (near Dallas), TX, USA
Status: offline 		As I said, if you get the screws good and tight with a ball driver they have never come loose on me, in fact it takes a significant effort to get them loose. I see no need for any thread locker.

TF

(in reply to BadBoy__MadMikey)
       Post #: 131

RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 6:28:53 PM   
p51flyby


 

Posts: 28
Joined: 2/11/2003
From: Manassas, VA, USA
Status: offline 		Here's pictures of my setup so far. I'm at a stopping point for now, until I receive the servos I ordered from Chief Aircraft.

I used a servo tray from a long-dead airplane to mount the throttle and choke servos (pic 1).
I mounted the ignition module and the ignition battery under the fuel tank tray. Hopefully this doesn't put too much weight in the nose. (pic 2)
I chose screws to mount the canopy, and added trim to the edges for a clean look (pic 3).
Pics 4 and 5 are zoomed out shots of the throttle and choke servos.

Once I receive the elevator servos, I can figure how far back to put the batteries (I'm using 2 1100 NiMH batts from NoBS). If I'm lucky, I may get to maiden flight next weekend.




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(in reply to WW2 Ace)
       Post #: 132

RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 7:30:30 PM   
Tired Old Man


 

Posts: 12012
Joined: 2/25/2002
From: Central, CA, USA
Status: offline 		That screw size is 2.6 x 8mm if your using the metal arms.

I believe JR is 3 x 8mm.

If you absolutely, positively, can't go on without it, and feel that you just have to put something else on the screw, apply a small dab of clear silicone over the top and onto the servo arm. Once it dries you have to peel it off later to get the screw out, but you will get the screw out.

As Tom said, using Locktite on servo screws is a good way to turn a servo into one that can only be used for one particular plane in one particular position. It can take quite a bit of heat applied to a screw to break loose the Locktite, and you may still not get the screw out without damaging the servo.

< Message edited by Silversurfer -- 8/19/2006 7:38:20 PM >

_____________________________

If you can''t fix it with a hammer, you have an electrical problem.

(in reply to p51flyby)
       Post #: 133

RE: Redesigned 28% Extra 300 Build / Questions - 8/19/2006 11:23:15 PM   
flatlandmike



Posts: 1162
Joined: 10/6/2003
From: lexington, KY, USA
Status: offline 		Silver JR is 3x6 and the blue loctite is what i use on every screw thats metal to metal. and in the 3 years i have done this with jr 8611 and 5945s and 5955s i have never had a stripped screw or a screw i couldnt remove.

_____________________________

www.jerseymodeler.com
Special thanx to The Crew Mike B. Jim Z. Ed J. Jim S.

(in reply to Tired Old Man)
       Post #: 134

RE: Redesigned 28% Extra 300 Build / Questions - 8/20/2006 12:16:58 AM   
bobzilla



Posts: 886
Joined: 8/4/2004
From: Henderson, NV, USA
Status: offline 		I think I heard that before..that blue is ok..but I know red IS NOT good.
bobz

(in reply to flatlandmike)
       Post #: 135

RE: Redesigned 28% Extra 300 Build / Questions - 8/20/2006 2:12:28 AM   
BadBoy__MadMikey


 

Posts: 306
Joined: 10/1/2004
From: Spartanburg, SC, USA
Status: offline 		Guess What Guys???

Mikey

(in reply to bobzilla)
       Post #: 136

RE: Redesigned 28% Extra 300 Build / Questions - 8/20/2006 3:14:51 AM   
bobzilla



Posts: 886
Joined: 8/4/2004
From: Henderson, NV, USA
Status: offline 		You have LOOSE SCREWS??

hehehehe
bobz

(in reply to BadBoy__MadMikey)
       Post #: 137

RE: Redesigned 28% Extra 300 Build / Questions - 8/20/2006 3:15:13 AM   
Tired Old Man


 

Posts: 12012
Joined: 2/25/2002
From: Central, CA, USA
Status: offline 		I use the blue from time to time mself, but you know that somebody, somewhere, will use the red and not be able to get the screw out. I know a guy that did it and he was pretty worried for awhile there.

I have a feeling that we are about to be hearing from another.

_____________________________

If you can''t fix it with a hammer, you have an electrical problem.

(in reply to flatlandmike)
       Post #: 138

RE: Redesigned 28% Extra 300 Build / Questions - 8/20/2006 3:34:34 AM   
BadBoy__MadMikey


 

Posts: 306
Joined: 10/1/2004
From: Spartanburg, SC, USA
Status: offline