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RE: 1/2A trainer anyone? - 9/9/2005 10:18 PM   
Bipe Flyer



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Status: offline 		Your drawing is correct except for the inner ribs. Here is a picture. The ribs, drawn in blue, need to be at the very centre and will be angled slightly so that they are flush with each other. The best way to do this is to dry fit the wing panels, dihedral brace and the inner most ribs and then glue everything into place.

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RE: 1/2A trainer anyone? - 9/9/2005 10:24 PM   
D Bronk



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Status: offline 		Thank you Andrew,now I got something to work with ,as far as paint goes that is perfect. I scribbled a bit more on that photo does it look right.? Am I understanding you correctly? I`ll be using FUTABA standard size servos .SHALL I just build a mount .for the one in the Wing, or do you have something special in mind for that too.I was thinking a simple pair of rails,and a light braceing. I could use paint again on a photo to show you , what I was thinking of doing...I`ll just draw that up, while you here ,and that way I can plan my next steps.

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RE: 1/2A trainer anyone? - 9/9/2005 10:26 PM   
Bipe Flyer



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Status: offline 		Install spruce rails for the servo. With the servo mounted it will look like this.

It will be best with micro servos, like Hitec HS81s, especially in the wing. If you use standard servos, complete the plane, mount the engine, install the fuel tank and battery before deciding on the final position of the servos as they will affect the CG significantly depending on their position. Keep in mind that standard servos will add 4 to 6oz more than micro servos.

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< Message edited by Bipe Flyer -- 9/9/2005 10:33 PM >

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RE: 1/2A trainer anyone? - 9/9/2005 10:40 PM   
D Bronk



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Status: offline 		Okay NOW I understand. Good thing you cleared that up for me.Thanks. i CAN SEE THAT, AS BEING, A MUCH STRONGER WING NOW.. GOOD THINK I DIDN`T RUSH ALONG YESTERDAY OR I WOULD BE doing some constructive, destruction,today I couldn`t imagine how I was going to bend that sheeting in the centre if I ran the grain the way it`s shown on the plan..I`m not going to make that drawing because I can see that the sheeting will keep the ribs from flexing out ..

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RE: 1/2A trainer anyone? - 9/9/2005 10:53 PM   
D Bronk



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Status: offline 		Okay I`ll check over the weekend ,into that mail order(web) address you gave me for the balsa and see what they can do for mein regards to electrics.THE shop over here is way to expensive for radio equipment.SINCE I`ve got Futaba I would like to stay with that brand and maybe see if they sell a MICRO_ flight pack with a reciever and battery so I` wont have to take my electrics out for my plane.I`ll be able to , just change models on the TX..I`ll let you go for now.. THANKS again..DAVE B.

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RE: 1/2A trainer anyone? - 9/10/2005 3:05 AM   
DustOffUH1



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Hitec & Futaba are compatible

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RE: 1/2A trainer anyone? - 9/11/2005 12:39 AM   
D Bronk



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Status: offline 		WELL the wing is joined .I have a few shear webs to make and place yet,,and some sanding,to do.Also need to put the mechanical in with the ailerons..

WHAT I NEED to find is a half price sale, on that micro-flight pak,or I think, I`ll have no choice ,but to use what I have,now..That small stuff is expensive ..D.B.

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RE: 1/2A trainer anyone? - 9/11/2005 3:15 AM   
Bipe Flyer



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Status: offline 		The Hitec micro flight pack is the same price as the standard size, except you only get 3 servos.
http://www.greathobbies.com/scart/productinfo.php3?PartNumber=HIT28570

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RE: 1/2A trainer anyone? - 9/11/2005 4:25 AM   
D Bronk



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Status: offline 		I think I`m going to talk to the Kids dad, and ,insist that HE BUY them ,A RADIO SET , with the micro equipment.Something compatible with my system,so my BUDDY switch,on my radio , can be used to teach them.Otherwise I`ll pick them up a system as a Christmas gift..I`ve kind of blown my R/C budget for the year at this point.I`ve got an idea I want to run by you ANDREW, and get your opinion,before I do it,to see what you think. I`ll do one of my photo painting things this evening for you to look at..I had visitors drop in, so I`ve not been able to do much today ,and want to get a bit more done yet ,before I spend all my time on the computer.THE sky opened up with rain(got dark) and I was able to take a couple of good shots, using one of my favorite airplane building tools...I LOVE MY,,,,, LASER...It dosn`t show up in pictures well, in normal daylight, so I took the oppurtunity, to do it now..

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< Message edited by D Bronk -- 9/11/2005 4:29 AM >

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RE: 1/2A trainer anyone? - 9/11/2005 4:31 AM   
D Bronk



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Status: offline 		FORGOT to Add the pics in above post they are there now .D.B.

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RE: 1/2A trainer anyone? - 9/17/2005 7:50 PM   
D Bronk



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Status: offline 		.HI EVERYONE..I`m back!!we had an electric storm last SUNDAY eve. and it blew my modem in the computer.The telephone lines been checked and the modem changed .I miss my computer when things go wrong with it.I`ve been ,slowly picking at the trainer, while I was off the NET.But i have a question for ANDREW,about the fire wall.I don`t see any thing in regards to right ,or down thrust,and the drawing apears to show the engine mounted SQ.and center .Is this correct or should be putting some offset,and thrust angles to this firewall.?? I`m at that point now and will getting close to finished by the end of the weekend..I hope nobody thought I gave up on this project..DAVE B.


.A couple pics..

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RE: 1/2A trainer anyone? - 9/17/2005 11:16 PM   
Bipe Flyer



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Status: offline 		You may need a couple degrees of down and right thrust, but I usually start at zero and then shim the motor mount with washers if the thrust lines need to be adjusted.

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RE: 1/2A trainer anyone? - 9/18/2005 12:39 AM   
D Bronk



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Status: offline 		oKAY Andrew,, I`LL PUT IT IN square THEN.. iT`LL BE EASIER TO PUT THE THRUST IN LATER ,THAN TO TRY AND TAKE IT OUT LATER..

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RE: 1/2A trainer anyone? - 9/18/2005 8:27 AM   
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Status: offline 		Hi, since I have spare futabas 3004 I enlarged the plans 20% and try a slightly larger LST. I just cut the ribs and fuselage sides.
Im planing on adding doublers from front end to cabin ( maybe only 1/8 x 1/8 sticks with cut outs for the formesF1 to F3?),
and thinking in useing an os max .15 fp .

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RE: 1/2A trainer anyone? - 9/18/2005 9:02 AM   
Bipe Flyer



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Status: offline 		Cool! Looking forward to updates.

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RE: 1/2A trainer anyone? - 9/19/2005 5:53 AM   
D Bronk



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Status: offline 		HI ANDREW ,I`m not moving to fast with this build,but .I`ve come in to a glitch with the FIREWALL+0.074 NORVEL and just wanted to bring it to your attention..I think the pics will explain..Whats your oppinion,leave as the drawing shows ,or, push it back???.It was said that the plane built, "tail heavy"..Maybe ,leaving things as drawn, will help out with the balance issue,by letting ,the engine hang out further..D.B.

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RE: 1/2A trainer anyone? - 9/19/2005 8:05 AM   
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Status: offline 		Yes, the .074 is quite a bit longer than the .061. If you're worried about weight, then put it where it is drawn on the plans, or you could move it back maybe 1/4" for aesthetics. I wouldn't move it the whole 3/8" back though.

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RE: 1/2A trainer anyone? - 9/19/2005 8:22 AM   
D Bronk



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Status: offline 		Maybe I`ll split the difference and "Push the firewall back 3/16",and epoxy it in.If it needs to move further out front ,I can easily put a 1/8 ply plate behind the engine mount,on front side of the firewall ,as a shim.Don`t want to add lead if possible..

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RE: 1/2A trainer anyone? - 9/20/2005 3:16 AM   
D Bronk



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Status: offline 		A question for anyone.On the large planes I epoxy the firewalls etc. in place.Is this unecessary on a little plane like this,and just C.A. it in with tri-stock in the corners..I just don`t want to over-kill on this...pics...D.B.

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RE: 1/2A trainer anyone? - 9/20/2005 4:07 AM   
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Status: offline 		Epoxy or slow-cure epoxy would be in order. Firewalls take a pretty good hammering.

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RE: 1/2A trainer anyone? - 9/20/2005 4:23 AM   
D Bronk



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Status: offline 		THank you . I`ve got 30 minute ,so I`ll use it..DAVE

< Message edited by D Bronk -- 9/20/2005 4:24 AM >

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RE: 1/2A trainer anyone? - 9/20/2005 6:00 AM   
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Status: offline 		... Epoxy is best, not only because of the hammering, but it's more resistant to nitromethane than cyano ( I think anyway ) and the little engines use a higher concentration, so the 1/2 firewall may even need epoxy more than the .40 birds..


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RE: 1/2A trainer anyone? - 9/20/2005 7:07 AM   
D Bronk



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Status: offline 		Thanks guy`s ,It`s all over but the "DRYING",well ,Curing ,to be correct ,Home made tri stock installed, as well.. D.B.

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RE: 1/2A trainer anyone? - 9/20/2005 8:06 AM   
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Status: offline 		I agree that epoxy is the way to go. Make sure you fuel proof the inside of the cheeks too.

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RE: 1/2A trainer anyone? - 9/20/2005 3:56 PM   
D Bronk



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Status: offline 		Yes ANDREW, I thined my left over epoxy, and applied it to, the cheeks, as well as the area between F-1 to F-2, where the fuel tank will be mounted..So now I`ll move ahead again,but,,, ,NEED,, COFFEE,,,, first,, D.B.

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