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General control line discussion => Open Forum => Topic started by: Brian Massey on March 23, 2012, 07:55:16 PM

Title: New Chipmunk finally coming together.
Post by: Brian Massey on March 23, 2012, 07:55:16 PM: It's been on the bench since last summer HB~>, I can't believe all the distractions, but finally! I'm hoping to have it ready for the NW Regional.

It's scratch built with many of the mods done by DF; equal panel wings, longer fuse etc. First time I've sheeted a wing, not sure I did it right, but it's covered. Still lots of sanding/filling :-\

Brian
Title: Re: New Chipmonk finally coming together.
Post by: proparc on March 23, 2012, 08:05:57 PM: Hard to believe it but, this is what Vic Macaluso based his first Crusader on.
Title: Re: New Chipmonk finally coming together.
Post by: Ed Keller on March 23, 2012, 08:47:22 PM: Which plan set did you use? Is this a Dill Chip, or a Van Loo, or ?? Keep us posted on how the weight came out. Regards, Ed
Title: Re: New Chipmonk finally coming together.
Post by: Clint Ormosen on March 23, 2012, 10:00:40 PM: Looks like the Sig version? Either way, looks like you're doing an excellent job.

Oh, and it's chipmUnk. Get it right next time! LL~
Title: Re: New Chipmonk finally coming together.
Post by: Brian Massey on March 23, 2012, 10:30:00 PM: Quote from: Ed Keller on March 23, 2012, 08:47:22 PM
Which plan set did you use? Is this a Dill Chip, or a Van Loo, or ?? Keep us posted on how the weight came out. Regards, Ed
I used the Sig Super ChipmUnk (per Clint) plans. Setting it up for an LA 46 and hoping to keep the finished weight at or under 55 oz. Haven't weighted it yet, but probably will soon. The wing by itself was 12 oz with controls & ready to slip in the fuse. I'm going to carbon veil the wings to I won't poke my fingers through the balsa when I'm picking it up. I hate that when I do it.

Brian
Title: Re: New Chipmunk finally coming together.
Post by: Brian Massey on March 26, 2012, 12:10:47 PM: At the point shown in the photos it hit the scale at 26.6 oz. Since the photos, I've finished filing in the wingtips and done some more filling/sanding and applied the first coat of nitrate dope. I'll put a few coats on then put some carbon fiber veil over the wings. Then, more sanding etc. Not sure it will happen before the NW Regional.

Brian
Title: Re: New Chipmunk finally coming together.
Post by: Balsa Butcher on March 26, 2012, 12:59:45 PM: Looking good Brian. The only think I would suggest is extending the fuselage top piece so as to continue to the end of the motor mounts. It will add a lot of strength, very little weight and you can still use the kit cowl. Nice. 8)
Title: Re: New Chipmunk finally coming together.
Post by: Brian Massey on March 26, 2012, 01:29:05 PM: Quote from: Pete Cunha on March 26, 2012, 12:59:45 PM
Looking good Brian. The only think I would suggest is extending the fuselage top piece so as to continue to the end of the motor mounts. It will add a lot of strength, very little weight and you can still use the kit cowl. Nice. 8)
Hmmmm, not a bad idea.

Thanks,

Brian
Title: Re: New Chipmunk finally coming together.
Post by: Clint Ormosen on March 26, 2012, 05:23:35 PM: Yes, do what Pete said. Carve a block and epoxy it in there.
Title: Re: New Chipmunk finally coming together.
Post by: Walter Hicks on March 29, 2012, 12:09:05 AM: Brian you will love it I built one with those mods and used an ST .46 it flew much , much better than the other stock Chipmunks I had built previously.

Glad to hear you are using the LA .46 that will make a big difference.
Title: Re: New Chipmunk finally coming together.
Post by: Sean McEntee on March 30, 2012, 05:23:43 AM: Is the Sig Chimpmunk N-30 yet?
Title: Re: New Chipmunk finally coming together.
Post by: Brian Massey on March 30, 2012, 09:55:55 AM: Quote from: Sean McEntee on March 30, 2012, 05:23:43 AM
Is the Sig Chipmunk N-30 yet?
Good question, I think someone told me that the Sig Super Chipmunk has been around since the early '70s, but I wouldn't bet my life on it. I hope someone more knowledgeable jumps in here.

Brian
Title: Re: New Chipmunk finally coming together.
Post by: Balsa Butcher on March 30, 2012, 10:58:14 AM: I have it on good authority that the current Sig Chipmunk, stock or with David's mods is N-30 eligible. 8)