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General control line discussion => Open Forum => Topic started by: wwwarbird on February 10, 2012, 09:22:28 PM

Title: Challenger .15, done and RTF
Post by: wwwarbird on February 10, 2012, 09:22:28 PM
 Well I just finished final assembly on the Challenger .15 tonite and I'm declaring it ready to fly. This is an original 36" span design by Keith Sandberg for .15 size engines. It's an incredibly capable and great performing stunter for it's size and also makes a great "stepping stone" trainer with it's sturdy design. Laser cut rib sets with plans are available from Walter Umland, which is what this one was built from. Finished weight as shown here is exactly 25 ounces (too much clear, could easily have been lighter) and power is a Brodak .15. Finish is all Brodak dope and the "star and bar" graphics are vinyl from Emily at Control Line Central. All of the black Navy lettering and numbers, also in vinyl, are from Robb Kaiser at Blown Concepts in Minneapolis, MN.
 
 If anyone is interested in more detailed info on this build there are separate posts with lots of photos in both the "Building Techiques" and "Painting and Finishing" sections here on Stunthangar.

 Think Spring! H^^
Title: Re: Challenger .15, done and RTF
Post by: wwwarbird on February 10, 2012, 09:24:53 PM
 More pics...
Title: Re: Challenger .15, done and RTF
Post by: jim gevay on February 11, 2012, 05:29:38 AM
Very nicely done Wayne.
Title: Re: Challenger .15, done and RTF
Post by: Paul Taylor on February 11, 2012, 05:48:16 AM
As always your planes turn out great Wayne!!!!

My flying buddy Lou has the 40 size and its a good flyer. Your 15 size should be the same.
Title: Re: Challenger .15, done and RTF
Post by: Dalton Hammett on February 11, 2012, 07:17:16 AM
Very nice looking plane !!!!!

Dalton H.
Title: Re: Challenger .15, done and RTF
Post by: john e. holliday on February 11, 2012, 08:10:28 AM
The paint scheme really accentuate the lines of the plane.   It looks outstanding.   Hope it flies as well as it looks. H^^
Title: Re: Challenger .15, done and RTF
Post by: Crist Rigotti on February 11, 2012, 08:17:07 AM
Nice job Wayne.
Title: Re: Challenger .15, done and RTF
Post by: wwwarbird on February 11, 2012, 09:32:08 PM
As always your planes turn out great Wayne!!!!

My flying buddy Lou has the 40 size and its a good flyer. Your 15 size should be the same.

 Huh??? Just to clarify, this .15 size design is an original and not based on anything prior nor is there a pre-existing .40 size version...yet. ;D

 Thanks for the nice comments guys! H^^
Title: Re: Challenger .15, done and RTF
Post by: Paul Taylor on February 11, 2012, 09:35:57 PM
Hey Wayne,
Louis Rankin had a... I think a plane just about like this called a Challenger. I will have to go digging for pictures. Maybe a different plane.
Title: Re: Challenger .15, done and RTF
Post by: wwwarbird on February 11, 2012, 09:38:31 PM
 I think Dick Sarpolus had a .35-.40 size profile design called a Challenger too. By memory it was based on the old 48" Midwest Warbird series wing design.
Title: Re: Challenger .15, done and RTF
Post by: Joseph Patterson on February 11, 2012, 10:04:07 PM
     Very Niiiiicccceee!!!!
            Doug
             
Title: Re: Challenger .15, done and RTF
Post by: Dick Pacini on February 11, 2012, 10:29:50 PM
It looks like a small Primary Force...and that's not a bad thing.
Title: Re: Challenger .15, done and RTF
Post by: Clint Ormosen on February 11, 2012, 10:49:24 PM
Very sharp! Nice clean paint scheme. Detailed. I dig it. CLP**
Title: Re: Challenger .15, done and RTF
Post by: Dennis Leonhardi on February 12, 2012, 02:12:01 AM
Very nice Wayne!  What did you use for landing gear?

You're right, it was only 1 below zero in our area this morning at the time I got started - spring must be near!

Incidentally, Sarpolus used the Sig Super Chipmunk wing for his Challenger.  This one is all Keith Sandberg.


Dennis
 :)
Title: Re: Challenger .15, done and RTF
Post by: Wayne J. Buran on February 12, 2012, 04:33:25 AM
Very nice attention to details. Nice choice for paint.
Wayne
Title: Re: Challenger .15, done and RTF
Post by: John Stiles on February 12, 2012, 06:57:28 AM
Man that's a very nice job right there. Might I pose a question without seeming like an idiot? Did you clearcoat it in matte? It looks sorta "eggshell" in the pics[which my be the effect of the lighting]? Just curious, not being critical at all, thanks.
Title: Re: Challenger .15, done and RTF
Post by: Paul Taylor on February 12, 2012, 07:58:52 AM
I think Dick Sarpolus had a .35-.40 size profile design called a Challenger too. By memory it was based on the old 48" Midwest Warbird series wing design.
That sounds like it. 


I still think you build some very nice looking models!!! 
Be sure to give us a flight report.
Title: Re: Challenger .15, done and RTF
Post by: Bill Little on February 12, 2012, 01:41:32 PM
OK, Wayne!  It really looks sharp. y1  Wing looks like the airfoil will be good for stunting.  Something a lot of the smaller designs find lacking.  Great job with the paint scheme!

BIG Bear
RNMM/AMM
Title: Re: Challenger .15, done and RTF
Post by: Wynn Robins on February 12, 2012, 02:00:44 PM
do you have anu more pics?  LL~ LL~ LL~

looks great !
Title: Re: Challenger .15, done and RTF
Post by: wwwarbird on February 12, 2012, 09:03:34 PM
 Dennis,

 I made the aluminum landing gear from scratch using the pattern on the plans.

 John,

 The clear finish is actually nice and glossy, about 75/25 thinner/clear for the last coat. I don't know, it might be the light on what you're seeing. To date I've never polished or rubbed out any of my models, I just shoot the final clearcoats, let it dry and go flying. ;D

 Wynn,

 Yeah, here's another one. ;D
Title: Re: Challenger .15, done and RTF
Post by: Mike Griffin on February 13, 2012, 08:58:32 AM
Great Job Wayne

Mike
Title: Re: Challenger .15, done and RTF
Post by: Dan McEntee on February 13, 2012, 10:16:09 AM
   Three Challengers and No Waiting!!!! y1
    The Challenger that was mentioned above is the Bill Noyes Challenger ( I have the Gallexy Models kit) and I think there were two versions of it, or at least I have two seperate plans for it. Next is the Dick Sarpoulas Challenger. It was based on the SIG Chipmunk wing. I don't remember if it was published in Flying Models or not, but the plan is presented in the back of the How To Fly Controline book that Carstens Publications puts out. Good book for those of you that may be interested and I believe it's still in print. Then there is Keith Sandberg's great little model. I have one framed up and Wayne's neat photos will be inspiration to get mine finished. VERY NICE WAYNE!!!!! As usual! y1 H^^
  Type at you later,
  Dan McEntee
Title: Re: Challenger .15, done and RTF
Post by: John Miller on February 13, 2012, 10:32:25 AM
Well, here's another Challenger design. Gordan Delaney's fast combat design from the 70's. A darned good ship, and winner of the first Bladder Grabber in the hands of Jim Womack.
Title: Re: Challenger .15, done and RTF
Post by: Bill Little on February 14, 2012, 04:47:58 PM
   Three Challengers and No Waiting!!!! y1
    The Challenger that was mentioned above is the Bill Noyes Challenger ( I have the Gallexy Models kit) and I think there were two versions of it, or at least I have two seperate plans for it. Next is the Dick Sarpoulas Challenger. It was based on the SIG Chipmunk wing. I don't remember if it was published in Flying Models or not, but the plan is presented in the back of the How To Fly Controline book that Carstens Publications puts out. Good book for those of you that may be interested and I believe it's still in print. Then there is Keith Sandberg's great little model. I have one framed up and Wayne's neat photos will be inspiration to get mine finished. VERY NICE WAYNE!!!!! As usual! y1 H^^
  Type at you later,
  Dan McEntee

Hi Dan,

Let's not forget Rollie McDonald's Challenger!

BIG Bear
RNMM/AMM





Title: Re: Challenger .15, done and RTF
Post by: louie klein on February 15, 2012, 05:57:55 AM
Bill Noyes Challenger was a sweet flying plane. I'd love to build another one if I could get the plans. It was perfect with a K&B 40.---LOUIE  H^^ D>K
Title: Re: Challenger .15, done and RTF
Post by: Neal Beekman on February 26, 2012, 08:46:02 AM
My Challenger with LA 15 , flies great.
Title: Re: Challenger .15, done and RTF
Post by: Phil Spillman on October 09, 2018, 11:51:32 AM
Hi Neal, really nice looking plane! Did you build from a kit or plans? If plans where did you get them same question if a kit! Will you be returning to Brodak's FlyIn again? Its still a really fine time!

Phil Spillman
Title: Re: Challenger .15, rib sets and plan
Post by: dick shannon on February 05, 2019, 11:03:34 PM
i am interested in two sets of ribs for  Keith Sandberg designed Challenger .15
my email is shannons@yvn.com thanks so much
Title: Re: Challenger .15, done and RTF
Post by: Target on February 06, 2019, 12:17:20 AM
I think that Walter Umland from buildrightfyright.com sells kits and rib sets and plans.
Title: Re: Challenger .15, done and RTF
Post by: builditright on February 06, 2019, 08:38:54 PM
I think that Walter Umland from buildrightfyright.com sells kits and rib sets and plans.

Hi guys that is correct, I cut Keith Sandberg's Challenger 15 and Wayne also did an
upsized Challenger 575 and I hope he shows that one also.