Sig 1/4scale C/W Cub build
#2402
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RE: Sig 1/4scale C/W Cub build
David, I know the feeling, I just finished my Sopwith Sea Scout and have not flown it yet. One reason is magneto I/F. I purchased some chokes, but I am not sure how to apply them (Where?) Any of you old time magneto engine flyers have any tips for getting rid of the interference? I would appreciate the help.
#2403
RE: Sig 1/4scale C/W Cub build
ORIGINAL: Stan7476
David, I know the feeling, I just finished my Sopwith Sea Scout and have not flown it yet. One reason is magneto I/F. I purchased some chokes, but I am not sure how to apply them (Where?) Any of you old time magneto engine flyers have any tips for getting rid of the interference? I would appreciate the help.
David, I know the feeling, I just finished my Sopwith Sea Scout and have not flown it yet. One reason is magneto I/F. I purchased some chokes, but I am not sure how to apply them (Where?) Any of you old time magneto engine flyers have any tips for getting rid of the interference? I would appreciate the help.
From an industrial standpoint, we would put the chokes close to the device making the noise. We haven't used them in a long time because of the improvement in technology, but to me, that would make the most sence.
-David
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RE: Sig 1/4scale C/W Cub build
ORIGINAL: SunDevilPilot
Im jealous!
I have a set of 6'' Dubro ''balloon'' tires that Dubro renamed ''Tundra Tires''. I was having ground handling problems with them on so I removed them and installed the stock foam Dubro 1/4 Cub tires. The handling problem was corrected but they are foam and wear rather quickly doing long touch-n-goes on asphalt.
Thanks for the info!
SunDevilPilot
ORIGINAL: Cub Man
SunDevilPilot they are a set of the good old dubro cub wheels. They are air filled. yes I have to pump them up a couple times a year but love then 10 time better then the foam version. `Keep an eye out on ebay for them. Wish dubro would bring them back!!!!!!!!!!
SunDevilPilot they are a set of the good old dubro cub wheels. They are air filled. yes I have to pump them up a couple times a year but love then 10 time better then the foam version. `Keep an eye out on ebay for them. Wish dubro would bring them back!!!!!!!!!!
I have a set of 6'' Dubro ''balloon'' tires that Dubro renamed ''Tundra Tires''. I was having ground handling problems with them on so I removed them and installed the stock foam Dubro 1/4 Cub tires. The handling problem was corrected but they are foam and wear rather quickly doing long touch-n-goes on asphalt.
Thanks for the info!
SunDevilPilot
#2406
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RE: Sig 1/4scale C/W Cub build
Hello gents,
Boy did I make a mess last night. I sanded the inside then glued the two cowl halves together. I thought I would saturate the cloth before putting it in the cowl. That's what I've done on other layups. So I cut three pieces that should have worked to cover the middle and sides with some overlap. What happened was that the fabric wouldn't lay flat in the cowl. It kept folding up or sticking to my gloves. [:@] It was a mess so I pulled it all out before it set up and I'll try again. I guess I'll need to saturate the cloth AND spread some resin inside the cowl next time.
I'm sure the Fiberglass Specialties cowl is lighter and of course better built, so that's my fall back. For now though I'm trying to challenge myself by just using what came in the kit. The wing tube is a deviation, but for everything else I am sticking with the kit.
Oh, and don't try to clean resin off the cowl with acetone, it starts to dissolve the cowl.[:-] Use the book's idea of alcohol on a rag.
Boy did I make a mess last night. I sanded the inside then glued the two cowl halves together. I thought I would saturate the cloth before putting it in the cowl. That's what I've done on other layups. So I cut three pieces that should have worked to cover the middle and sides with some overlap. What happened was that the fabric wouldn't lay flat in the cowl. It kept folding up or sticking to my gloves. [:@] It was a mess so I pulled it all out before it set up and I'll try again. I guess I'll need to saturate the cloth AND spread some resin inside the cowl next time.
I'm sure the Fiberglass Specialties cowl is lighter and of course better built, so that's my fall back. For now though I'm trying to challenge myself by just using what came in the kit. The wing tube is a deviation, but for everything else I am sticking with the kit.
Oh, and don't try to clean resin off the cowl with acetone, it starts to dissolve the cowl.[:-] Use the book's idea of alcohol on a rag.
#2407
RE: Sig 1/4scale C/W Cub build
Hey guys, I've got a question for those of you that have used the colored Solartex. This again has to do with the "see throughieness" of the fabric. (Is that a word?) How important is it to get rid of all the pencil marks, ink marks from the factory printed parts, etc.? Also, since this is my first time covering with fabric, how much sanding and or filling really has to be done? Is it imperative to have it absolutely smooth?
Looking forward to your responses!
David
Looking forward to your responses!
David
#2408
Thread Starter
RE: Sig 1/4scale C/W Cub build
If you are using Yellow Solartex you will see everything. It is too transparent for my taste.
I suggest getting the structure as smooth as possible before covering as nothing will hide mismatches etc: If you want a Yellow Cub I suggest covering with white and then paiting yellow. This will go a long ways in curing the transparency issue.
Later!!
Anthony
I suggest getting the structure as smooth as possible before covering as nothing will hide mismatches etc: If you want a Yellow Cub I suggest covering with white and then paiting yellow. This will go a long ways in curing the transparency issue.
Later!!
Anthony
#2409
RE: Sig 1/4scale C/W Cub build
Hmmm... that was the plan. I've still got time before I'll be able to cover, so in the mean time, looks like I've got a lot of sanding to do. Woo-Hoo!!! I love sanding!!!
Thanks Anthony!
Take care,
David
Thanks Anthony!
Take care,
David
#2410
Thread Starter
RE: Sig 1/4scale C/W Cub build
I will be building (2) Sig Wonders over the Holidays then starting the dreaded Waco repair. How about I send you some extra sanding if you like it so much
#2411
RE: Sig 1/4scale C/W Cub build
Well Anthony, as much as I like it, I'm afraid I'll have my hands full with... uh... a lot of... uh... family....things... and uh....
Whoops! Got another email to tend to!
Later!
David
#2412
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RE: Sig 1/4scale C/W Cub build
My build is progressing slowly but surely. I've got the bones of both wings in place. I have the servo hatches installed in both wings. This weekend I sanded/rounded/finished the leading edges of both wings. Tonight I got the edge of the first wingtip done/rounded. I'll do the 2nd tomorrow or the next day. I just need to install the rest of the capstrips before the wings will be done (minus the ailerons).
Pic 1: both wings
Pic 2: First wing, tip before sanding/shaping the edge
Pic 3: closer view
Pic 4: Finished wing, everything rounded
Pic 5: closer view
Pic 1: both wings
Pic 2: First wing, tip before sanding/shaping the edge
Pic 3: closer view
Pic 4: Finished wing, everything rounded
Pic 5: closer view
#2415
RE: Sig 1/4scale C/W Cub build
Gee Neddy, looks like mine did a year and a half ago! Looking good. And now you'll now what you have to look forward to in a year and a half. No? Maybe sooner?
Got to get my cabin detail done if I'm going to finish this bird up by the end of the year! But who am I kidding? Eh, I'll try.
The creative juices finally started flowing tonight (yep, took all day long!)and here is what I came up with. Using a little balsa and a couple dowels and my hand drill as a lathe, I finished up the trim handle. The plate should be a no brainer obviously.
I'll edit this post and post the photos as soon as I reboot the computer. Stupid thing's acting up again, just like a child! Bad computer, bad computer!
Okay, it's working again. Good computer, yes, good computer.... Now, where'd I put that stupid dime...?
Got to get my cabin detail done if I'm going to finish this bird up by the end of the year! But who am I kidding? Eh, I'll try.
The creative juices finally started flowing tonight (yep, took all day long!)and here is what I came up with. Using a little balsa and a couple dowels and my hand drill as a lathe, I finished up the trim handle. The plate should be a no brainer obviously.
I'll edit this post and post the photos as soon as I reboot the computer. Stupid thing's acting up again, just like a child! Bad computer, bad computer!
Okay, it's working again. Good computer, yes, good computer.... Now, where'd I put that stupid dime...?
#2416
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RE: Sig 1/4scale C/W Cub build
Looking good Neddy, you're moving rigt along. Been getting to work on mine a little. I built the wings as per the plans and it's working out good so far. Here is a couple pics taken with cell phone.
#2417
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RE: Sig 1/4scale C/W Cub build
Question for CUB building experts!
I'm doing some updates on an old 1/4 CUB and will also be building a new one this winter. Over the years, I've flown several CUBs and it seems like the windshields are always a problem area for me. Specifically, how to trim the edges (sides and front mostly) in a manner that even comes close to looking scale like.... even for a stand way off scale airframe.
What are some of the methods you guys use? I can't even find CUB yellow trim tape any more. Anybody know a source of that. I've also considered thin strips of plastic or metal painted CUB yellow and glued / screwed in place similar to the full scale, etc.
All ideas will be appreciated!
I'm doing some updates on an old 1/4 CUB and will also be building a new one this winter. Over the years, I've flown several CUBs and it seems like the windshields are always a problem area for me. Specifically, how to trim the edges (sides and front mostly) in a manner that even comes close to looking scale like.... even for a stand way off scale airframe.
What are some of the methods you guys use? I can't even find CUB yellow trim tape any more. Anybody know a source of that. I've also considered thin strips of plastic or metal painted CUB yellow and glued / screwed in place similar to the full scale, etc.
All ideas will be appreciated!
#2421
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RE: Sig 1/4scale C/W Cub build
Big screw up tonight. I was cutting the ailerons off of the wing and instead of cutting behind the rear spar I cut in front. Without even thinking I'd cut all the aileron ribs in the wrong place. I'm trying to decide on a fix or if I just want to rebuild the whole wing. I'm very upset with myself right now.
#2422
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RE: Sig 1/4scale C/W Cub build
You are not the first to do this, guilty myself. I cut balsa pieces to fit against the side of the rib about an inch long. 1/2" in the ail and 1/2" in the wing, then recut. Later when you install the ail leading edge and the wing trailing edge, then the sheeting , it will be as good as new.
#2423
RE: Sig 1/4scale C/W Cub build
ORIGINAL: Neddy191
Big screw up tonight. I was cutting the ailerons off of the wing and instead of cutting behind the rear spar I cut in front. Without even thinking I'd cut all the aileron ribs in the wrong place. I'm trying to decide on a fix or if I just want to rebuild the whole wing. I'm very upset with myself right now.
Big screw up tonight. I was cutting the ailerons off of the wing and instead of cutting behind the rear spar I cut in front. Without even thinking I'd cut all the aileron ribs in the wrong place. I'm trying to decide on a fix or if I just want to rebuild the whole wing. I'm very upset with myself right now.
SunDevilPilot
#2424
RE: Sig 1/4scale C/W Cub build
ORIGINAL: SunDevilPilot
I'd do what Ace advised, to laminate some sub ribs to the cut area, making it all one piece again, then recut the ailerons off. If you laminated both sides it would be just as strong, if not more, as it was before the cut.
SunDevilPilot
ORIGINAL: Neddy191
Big screw up tonight. I was cutting the ailerons off of the wing and instead of cutting behind the rear spar I cut in front. Without even thinking I'd cut all the aileron ribs in the wrong place. I'm trying to decide on a fix or if I just want to rebuild the whole wing. I'm very upset with myself right now.
Big screw up tonight. I was cutting the ailerons off of the wing and instead of cutting behind the rear spar I cut in front. Without even thinking I'd cut all the aileron ribs in the wrong place. I'm trying to decide on a fix or if I just want to rebuild the whole wing. I'm very upset with myself right now.
SunDevilPilot
I'd do what SDP said to do, which was what Ace advised. Sorry! Just had to get in on this somehow! I didn't do that, I took soooooo long before cutting that I knew exactly what to do. But that doesn't mean I don't screw up still! There's plenty of those.
Good luck Neddy! I'm feeling for ya!
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RE: Sig 1/4scale C/W Cub build
If I heard it once I heard it a thousand time's, "Measure twice cut once". Of course with my teacher if you did it backwards and messed up, pretty good chance there was a knot a growing on the back of the head. So I learned to measure three time's.