RE: Redesigned 28% Extra 300 Build / Questions  
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RE: Redesigned 28% Extra 300 Build / Questions - 8/28/2006 12:26:08 AM   
Bobby Folsom


 

Posts: 701
Joined: 3/11/2005
From: Vicksburg, MS, USA
Status: offline 		Guys, first the long lead question: yes, I have had both a 35% Carden Edge and another brand of 35% edge where I use 36" (+ the servo lead itself) with absolutely no interference problems at all - range test was at least 300 ft with antenna collapsed and engine running.

Second question about placement of fuel dot: I always put the fuel dot on the side opposite the ignition switch AND I ALWAYS make sure that the dot is ABOVE the top of the fuel tank (reduces chances of siphoning).

Good luck with your maiden flights. If you adjust the CG and surface rates as Tom states in the manual, then your planes will fly straight and true with little or no changes.

Bobby

(in reply to Redneck Shaun)
       Post #: 201

RE: Redesigned 28% Extra 300 Build / Questions - 8/28/2006 1:38:58 AM   
Redneck Shaun



Posts: 497
Joined: 12/30/2003
From: gainesville, TX, USA
Status: offline
quote:

I always put the fuel dot on the side opposite the ignition switch

Hey bobby, I didn't intentionally do that, But the fuel dot ended up that way. Is that in case of miss directed fuel spill? Or something else?
Shaun

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RE: Redesigned 28% Extra 300 Build / Questions - 8/28/2006 3:19:22 AM   
WW2 Ace



Posts: 280
Joined: 8/31/2005
From: mich, MI, USA
Status: offline
quote:

ORIGINAL: sailing1

Anyone got any good suggestions for where to place the fuel dot.

Below are a few photos of my fuel dot installation.


I finished checking the geometry on the ailerons tonight and I got a perfectly balanced up and down throw by offsetting the servo arms 9° (Down on the deck method). I got both aileron CF push rods assembled and installed. I'm wondering if I even need the CF over the 4-40 rods. The CF is only a tad over 1.5", the over all length is approx. 4" from the center of one ball link to the other. is this worth leaving on? Next up is laying out the remaining gear in the fuselage (receiver, batteries, switches so I can do rough CG to see if I need to relocate anything.


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RE: Redesigned 28% Extra 300 Build / Questions - 8/28/2006 3:38:54 AM   
Tired Old Man


 

Posts: 12012
Joined: 2/25/2002
From: Central, CA, USA
Status: offline 		Bobby,

I'm with you on the servo leads issue. I'm using 36" leads plus the servos own 12" on the Sukhoi right now and was using 24 and 30 inch extensions on the Giles. No problems in either application. Not twisted, no chokes, or anything. Just Cermark flat extensions with the gold plated pins.

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RE: Redesigned 28% Extra 300 Build / Questions - 8/28/2006 10:17:04 PM   
Bobby Folsom


 

Posts: 701
Joined: 3/11/2005
From: Vicksburg, MS, USA
Status: offline 		Silversurfer, yes that is also my exact setup, Cermark gold plated extensions and nothing else in the way of filters, chokes etc. A lot of what we have come to do as a matter of routing is a result of the early ignition-type engines like the old quadra weed eater engines that were converted to airplane use and had lots of fF interference. As a result of new technology in electronicsmand electronic ignitions we don't see as many of these kinds of problems as we use to.


Now on to the fuel dot: I always put the fuel dot above the level of the tank top because when I remove my fuel probe from the fuel dot tubing I don't want fuel to syphon out onto the ground, plane or my foot!! Besides, it's that much less flying time if fuel syphons out! Simple fix if you've already installed you fuel dot is to glue a round piece of 1/32" light ply on the inside and cover over the hole on the outside with covering of the appropriate color. Then just cut a new hole at the "correct" poisiton and reinstall your fuel dot - VIOLA, your done.

Bobby

(in reply to Tired Old Man)
       Post #: 205

RE: Redesigned 28% Extra 300 Build / Questions - 8/29/2006 1:36:02 AM   
Redneck Shaun



Posts: 497
Joined: 12/30/2003
From: gainesville, TX, USA
Status: offline 		Hey Bobby I understand the point about having it above the level of tank. But you said you always put the fuel dot on the opposite side as the switch? That's what I was asking about.
Thanks
Shaun

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       Post #: 206

RE: Redesigned 28% Extra 300 Build / Questions - 8/29/2006 2:13:26 AM   
Bobby Folsom


 

Posts: 701
Joined: 3/11/2005
From: Vicksburg, MS, USA
Status: offline 		Hey Shaun: yeah, I always put the ignition on the right front and the fuel dol on the left front of the plane. Convention I guess that I started 7 years ago. It seems like the ignition wires and battery lead length and available area to cut the switch slot were better on the right side than the left side. And, probably the main reason, is because I learned to flip the prop with my gloved right hand and with body leaning to the left in the prop flipping follow through so if anything happens I could easilty reach the ignition switch with my ungloved left hand. Also, it keeps fuel from getting in and aroung the switch/charging recepticle.

I hope that helps. Take a look see at the position of the switches on all of the planes this weekend at Sherman. Todd and I should be there around 1700 hrs.

Bobby

(in reply to Redneck Shaun)
       Post #: 207

RE: Redesigned 28% Extra 300 Build / Questions - 8/29/2006 5:23:24 AM   
WW2 Ace



Posts: 280
Joined: 8/31/2005
From: mich, MI, USA
Status: offline
quote:

ORIGINAL: Bobby Folsom

Silversurfer, yes that is also my exact setup, Cermark gold plated extensions and nothing else in the way of filters, chokes etc. A lot of what we have come to do as a matter of routing is a result of the early ignition-type engines like the old quadra weed eater engines that were converted to airplane use and had lots of fF interference. As a result of new technology in electronicsmand electronic ignitions we don't see as many of these kinds of problems as we use to.

Bobby


Bob, I buy Cermark components and make my own extensions. Since I got started in GS I figured there was less chance of problems if I cut the connector off the servo and then extend the wires to the desired length and replace the stock connector with the gold plated pins. This insures against an extension coming apart in the wing or fuse. So it sounds like from what I'm hearing from you and Silver I should just continue to build them this way and forget the extra crap. My Edge range checked at over 400 feet with engine running and no signs of glitches using this method.

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RE: Redesigned 28% Extra 300 Build / Questions - 8/29/2006 5:34:50 AM   
WW2 Ace



Posts: 280
Joined: 8/31/2005
From: mich, MI, USA
Status: offline 		I didn't get a lot done tonight (other duties). I did get the trim all re-ironed on the wings and tail and replaced a piece of trim that came up by mistake. I also sealed the gaps on all the surfaces with clear Mono-kote. This works very well, its fairly easy to put on, and it looks very clean.

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"Learn from the mistakes of others, because you won't live long enough to make them all yourself"
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       Post #: 209

RE: Redesigned 28% Extra 300 Build / Questions - 8/29/2006 7:09:46 AM   
Tired Old Man


 

Posts: 12012
Joined: 2/25/2002
From: Central, CA, USA
Status: offline 		Pat,

Keep doing it the way you're doing it. When you get range checks beyond 200 feet you can't be doing anything wrong. I don't know about a 400' range check, though. I'm not so sure I'd make it back to the plane on the same day I started the check if I was going out that far. I'd prolly have to stop off on the way back for an adult beverage or something...

Pass on the extra chokes, twisted wires, and other odd stuff.

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

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RE: Redesigned 28% Extra 300 Build / Questions - 8/29/2006 9:31:08 AM   
Redneck Shaun



Posts: 497
Joined: 12/30/2003
From: gainesville, TX, USA
Status: offline
quote:

I learned to flip the prop with my gloved right hand and with body leaning to the left in the prop flipping follow through so if anything happens I could easilty reach the ignition switch with my ungloved left hand.

Oh ok, I got cha now. That makes since.

quote:

I hope that helps. Take a look see at the position of the switches on all of the planes this weekend at Sherman. Todd and I should be there around 1700 hrs.


Yea, I'll pay more attention to how the planes are set up at this contest. I just got my tonsills puled out, so I might be just a spectator at this contest. Look forward to meeting you then
shaun

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RE: Redesigned 28% Extra 300 Build / Questions - 8/29/2006 5:08:24 PM   
WW2 Ace



Posts: 280
Joined: 8/31/2005
From: mich, MI, USA
Status: offline 		For those of you that have flown your Extra, how much of an issue is having the fuel tank forward of the CG? Has there been any notable performance change as the fuel runs out? I was thinking over the winter I may rebuild the canister box so I can move the tank below the wing tube. Do any of you feel this is a waste of time?

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       Post #: 212

RE: Redesigned 28% Extra 300 Build / Questions - 8/29/2006 6:38:06 PM   
murry


 

Posts: 40
Joined: 6/30/2003
From: Fort Worth, TX, USA
Status: offline 		It can't hurt and wont take much time. I flew mine today and it is a great plane, for me it balanced about 3" to 3 1/4". I think you would need a lot more nose weight for IMAC style flying. Great job Tom another fine plane

(in reply to WW2 Ace)