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1/4 scale Grumman J2F Duck
Posted: Sat Dec 12, 2015 8:20 am
by Bushranger
Am about to maiden my Duck, anyone out there build one of these would be curious as to where you put the CG and flight characteristics. My Duck is about 10 foot x 10 foot w/3w 150 twin gas engine spinning a 3 blade Hamilton Standard variable pitch prop. New to site, also looking for a good spare prop for my full scale Broussard......thanks! ken
Re: 1/4 scale Grumman J2F Duck
Posted: Sat Dec 12, 2015 1:18 pm
by C VEICH
No Duck here Ken but I've built many a scale model and 25-28% of the total wing area has always been a safe place to start. Once you've flown it and trimmed it out then start moving the CG back until you find the sweet spot. I'm sure the Duck, with those big constant chord wings, would probably fly OK at 30-33% but why tempt fate on the first flight? Love to see some pics of the big Grumman if you are willing to share.
Good luck!
Chad Veich
Re: 1/4 scale Grumman J2F Duck
Posted: Mon Dec 14, 2015 8:47 am
by mazdaP5
Pictures!?
Re: 1/4 scale Grumman J2F Duck
Posted: Tue Dec 15, 2015 6:47 pm
by Bushranger
I can't seem to get pic uploaded onto this site; any suggestions????
Re: 1/4 scale Grumman J2F Duck
Posted: Wed Dec 16, 2015 5:13 pm
by C VEICH
You can send the pics to me Bushranger and I will upload them via my Photobucket account if you like.
Chad Veich
cwveich@cwvmodels.com
Re: 1/4 scale Grumman J2F Duck
Posted: Wed Dec 16, 2015 7:02 pm
by phil65
Bushranger wrote:I can't seem to get pic uploaded onto this site; any suggestions????
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