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scratch built c130

Old 11-22-2007, 05:17 PM
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longflyer
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Default scratch built c130

anyone building a c130 fro scratch as i am.....mine is 13'6" ws.. planning 4 os 65's for power. with syncro, and plug drivers....body about done.wingd 30%.... comments anyone.
Old 11-22-2007, 06:03 PM
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wingspar
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Default RE: scratch built c130

What/ No pictures?

Dave
Old 11-22-2007, 06:59 PM
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longflyer
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Default RE: scratch built c130

pics will be posted in the next cpl of days.. got to take them first.
john
Old 02-11-2008, 11:13 PM
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Default RE: scratch built c130

ok here are latest pics.. hope to start glassing within a week or so.
john
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Old 02-11-2008, 11:20 PM
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UkerDuker
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Default RE: scratch built c130

John,
That looks good since you sanded all the foam blocks. Any idea of what the overall weight is so far?

Mike
Old 02-11-2008, 11:23 PM
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Default RE: scratch built c130

not weighed it yet.... i'll do that tues and let you know current weight.
john
Old 02-17-2008, 08:29 PM
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Default RE: scratch built c130

Did u do the plans your self or did u download them from a site???
Old 02-18-2008, 05:31 PM
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Default RE: scratch built c130

the plans are from a 1956 set of control line plans.. it was 6 foot. and i had them inlarged to 12 foot plus.. so iam using the outlines and going from there on putting it together. its getting big and heavy...
Old 03-02-2008, 10:26 PM
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Default RE: scratch built c130

weight the plane.. body in pics 19 lbs
wings 4 lbs each
center section 3 lbs
total 30 lbs so far.. est finished 50 to 60 lbs
john
Old 03-02-2008, 10:31 PM
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Default RE: scratch built c130

John,

Your numbers make me worry that my built-up AC-130 will be heavy. I would have thought you foam construction would have been very light. Personally, I'm hoping for a 40lbs target weight-dry. I will have to be very light when I glass my project to prevent any excessive weight.

DO you think you .65s will be enough engine? You might need to jump into the .90 motors if it gets too heavy.

Mike
Old 03-04-2008, 05:53 PM
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Default RE: scratch built c130


ORIGINAL: longflyer

weight the plane.. body in pics 19 lbs
wings 4 lbs each
center section 3 lbs
total 30 lbs so far.. est finished 50 to 60 lbs
john
That is one heavy model there, foam construction is always bit on havy side Vs built up ones but blue foam is much more havier then white foam. I experimanted this before making my S Connie model and then decided to go white foam. Did you hollowed the fuselage or its full foam blocks still there?, i would hollow the fuselage if possible to cut down considerable weight.

If there is a possibility, try to make new wing cores from white foam also, this will cut down more weight and plane will fly better. Only parts i made from blue foam is the tailplane section and that is only due to 3 fins only as i needed alot of strength there.
Are you planning to balse sheet the wings and fuselage or just glass it directly?.





Old 03-06-2008, 10:44 AM
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Default RE: scratch built c130

planning to glass body and wings.. tail is going to be fabric covered.. auto paint for finish maybe.
the spars in the wings are carbon fiber.. just like the windrose that i built with 50 foot wings.. maybe i will have to go to 90s... i'll 65's first.
Old 03-06-2008, 10:52 AM
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Default RE: scratch built c130

forgot to add
the foam on the body is only a inch thick in most places.. the formers were lightened
so the body is pretty hollow. tail surfaces are on the heavy side... thats why all the holes.. took off about 2 lbs.. i'm going to have 3 battery packs and motores are ahead of cg.
Old 03-06-2008, 07:25 PM
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Default RE: scratch built c130

Do you know what resin will you be using for the glassing, i would still make new wings if possible. that is going to be very heavy model, what is your wing loading going to be?
Old 03-23-2008, 10:16 PM
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Default RE: scratch built c130

anybody have suggestions for the hinges.. need something strong for surfaces....
Old 03-24-2008, 05:21 AM
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Default RE: scratch built c130

is it me, or do the wings have a slight anhedral? is this the weight of the foam itself? this makes me ask is the wing spar design up to having 4 engines mounted, with all the associate plumbing, electrics, wiring etc? may i suggest a load test, to establish this? how thick is the carbo spar at the moment? re the empennage, is that solid balsa, or sheet on frame? sorry about all the questions, better to get it right now, than at the field
Old 03-24-2008, 08:20 PM
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Default RE: scratch built c130

i love a good scratch build frfoam project, I will be watching closely.


Weskel
Old 04-11-2008, 12:35 PM
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Default RE: scratch built c130

the carbon fiber spars are 1/2 inch by 1/4 inch tapering to the tip.. the wings will be st8 on top side ... only had one bolt in the spars to take pics. the body is stringers and foam.. i now have everything glassed.. doing the the tail in 1.7oz dacron... one primer coat on and started sanding... i'm planning two coats of primer.. most of it will be sanded off.. maybe auto lacquer for finnish,, not decided yet.... working engine mounts at present.
Old 04-11-2008, 01:30 PM
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Default RE: scratch built c130

Looks good. But after I got it all glassed I would reach inside the fuse and remove as much as possible of the excess foam and bulkheads... Four 65's will fly 50 lbs but loose and engine or 2 and your in trouble...
Old 04-12-2008, 06:27 PM
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Default RE: scratch built c130

weighted the c130 today.. 38.4 lbs minus eng and batt and electronics......and paint
Old 08-12-2008, 04:15 PM
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longflyer
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Default RE: scratch built c130

gettin down to final assembly.. doing wiring (130 feet) . mounting servos. pics coming shortly.
Old 08-14-2008, 06:48 PM
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Default RE: scratch built c130

ok guys here are the lastest pics..
1 is the elec
2 is the main wiring from wing, total used 130 feet
3 pipe is exhaust from motor... muffler modifyied so it is behind motor in the nacel.
4thru.. misc photos.
Old 08-14-2008, 08:15 PM
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Default RE: scratch built c130

here are the pics
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Old 08-14-2008, 08:17 PM
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Default RE: scratch built c130

more pics
Old 08-14-2008, 08:20 PM
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longflyer
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Default RE: scratch built c130

try again
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