Re: KR> CG tolerance

2020-08-09 Thread Flesner via KRnet
This whole CG thing comes down to the following simple law of physics: Any lifting body (wing) has a center of lift (CL) where if all areas of lift were concentrated in to one spot, it is the CL  The engineer designs the airplane to distribute the weight of the aircraft so that if all weight

Re: KR> CG tolerance

2020-08-09 Thread Phillip Matheson via KRnet
My Kr2 was balanced nose heavy. It needs a minimum of 70kg pilot to fly. Wing tanks on the CofG central line. Flys great. But as always with the short Kr2, PIO (pilot induced isolations) with over correction is common. If I did not have an experienced Kr pilot with me on my first flight, it woul

Re: KR> New Guy

2020-08-09 Thread Flesner via KRnet
D*&n, did it again on the subject, even after being reminded. Larry Flesner ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.

Re: KR> New Guy

2020-08-09 Thread Flesner via KRnet
On 8/9/2020 3:06 PM, Dr. Feng Hsu wrote: I would also say, that one of the biggest safety hazards for a very small and light aircraft like the KR2, is its extremely high sensitivity of CG locations, correct? Or in other words, it's the VERY LOW erro tolerance for CG violations, which could chan

KR> New Guy

2020-08-09 Thread dee david via KRnet
Hi I’m new also on this website. I’m Dee. Anthony, I would strongly, advise you to take Donald J up on his offer to first hand see someone ___ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRn

KR> New Guy

2020-08-09 Thread dee david via KRnet
Hi I’m new also on this website. I'm Dee. Anthony, I would strongly, advise you to take Donald J. up on his offer to first hand see the building process if you have not done it before. With that said, I’d like to ask where I can find a set of blue prints for the kr2S. NVnet is out of busine

KR> CG tolerance

2020-08-09 Thread Flesner via KRnet
On 8/9/2020 2:53 PM, Dr. Feng Hsu wrote: So, it could be dangerous even if the tail section is around 2 pond heavier than CG required, correct?! Kindly, Dr. Hsu +++ I don't know if anyone has tested C.G. range down

Re: KR> New Guy

2020-08-09 Thread donald january via KRnet
Hello Anthony. I'm Don January and live 50 miles west of you on highway 2 in Michigan N.D. I Have a Taylor-monoplane nearing completion and is built very much like a KR-2. Now would be a good time to stop by and get a close look at the building involved from wings to control surfaces along with Fus

Re: KR> New Guy

2020-08-09 Thread Flesner via KRnet
On 8/9/2020 3:38 PM, Anthony Steinke via KRnet wrote: Since this thread no longer has nothing to do with my original post, the title should probably be changed and a new thread on weight and balance started. Anthony Steinke +

Re: KR> New Guy

2020-08-09 Thread Anthony Steinke via KRnet
Since this thread no longer has nothing to do with my original post, the title should probably be changed and a new thread on weight and balance started. Anthony Steinke Get Outlook for Android From: KRnet on behalf of Dr. Feng Hsu via KR

Re: KR> New Guy

2020-08-09 Thread Dr. Feng Hsu via KRnet
I would also say, that one of the biggest safety hazards for a very small and light aircraft like the KR2, is its extremely high sensitivity of CG locations, correct? Or in other words, it's the VERY LOW erro tolerance for CG violations, which could change in a potentially very hazardous way when t

Re: KR> New Guy

2020-08-09 Thread Dr. Feng Hsu via KRnet
Absolutely Larry! Sorry I really meant to say, in my previous questions that we prefer a bit head heavier rather than tail heavier due to the control capabilities we could leverage on using the horizontal stabilizer, correct? But not sure if anyone has tried this, say by how much (within 5 or 10 po

Re: KR> New Guy

2020-08-09 Thread Flesner via KRnet
On 8/9/2020 11:30 AM, Dr. Feng Hsu via KRnet wrote: Also, I wish to know what's the design error tolerance on the CG position for KR (not KR2S)? Such tolerance is determined by the capacity (surface area) of the stabilizer, correct? If there is any uncertainty about the CG spot, or to put

Re: KR> New Guy

2020-08-09 Thread Dr. Feng Hsu via KRnet
Aatually, I have exactly the same question on checking and verifying the weight & balance on my KR2... Is it right underneath the main spar of the wings, or 3 to 4 inches position from the leading edge going backward? The reason I think it's the CG spot because I used two jacks and lifted the whole

Re: KR> New Guy

2020-08-09 Thread Anthony Steinke via KRnet
Hi Sam, thanks so much for taking the time to welcome me and give me all that information! Do you have any suggestions on where to start when figuring out weight and balance and have you had to rebuild the heads on your engine often? I plan on reading through the archives between now and spring