KR> AGM batteries
You may want to look into a 'Battery Tender' http://www.amazon.com/Deltran-Battery-Tender-021-0128-Charger/dp/B00068XCQU/ref=sr_1_1?ie=UTF8=1423888923=8-1=battery+tender+chargers for keeping an idle battery healthy. I have used these on my Harleys for over 30 years and never had a battery issue when letting the bike sit idle for extended periods. I will admit that I start them at least every 3 - 4 weeks to keep water out of the oil and ensure the seals get a nice oil soak. JMHO. Mark W. N952MW Mark Langford wrote -Original Message- From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Mark Langford via KRnet Sent: Friday, February 13, 2015 10:02 PM To: KRnet Subject: KR> AGM batteries Regarding the recent discussion on batteries, I should point out that the Odyssey 680 battery is an AGM (absorbed glass mat) battery with some pretty impressive qualities. Their main claim to fame is that they don't "self-discharge" nearly as fast as regular lead-acid batteries, and last a lot longer in service. They will fit in a much more compact space (see enclosed image) although --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com
KR> KRnet Digest, Vol 3, Issue 44
Yep, it was a J-3 Sent from Windows Mail From: Virgil N.Salisbury via KRnet Sent: ?Friday?, ?February? ?13?, ?2015 ?2?:?30? ?PM To: Patrick Driscoll, KRnet On 2/13/2015 4:52 PM, Patrick Driscoll via KRnet wrote: > I am trying to remember a picture of an airplane that I saw years ago. > I think it was a J3 with two props mounted on pylons sticking out to > each side of the aircraft. Anyone recall seeing this? > Patrick Driscoll Yes just recently, Virg ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
KR> AGM batteries
Sent from my iPhone > On Feb 13, 2015, at 8:02 PM, Mark Langford via KRnet list.krnet.org> wrote: > > Regarding the recent discussion on batteries, FYI, looks like Lowes stocks the Deka battery Dan Prichard
KR> AGM batteries
Regarding the recent discussion on batteries, I should point out that the Odyssey 680 battery is an AGM (absorbed glass mat) battery with some pretty impressive qualities. Their main claim to fame is that they don't "self-discharge" nearly as fast as regular lead-acid batteries, and last a lot longer in service. They will fit in a much more compact space (see enclosed image) although they weigh only slightly less. Also, you can mount a typical AGM battery on its side, as I did in N56ML which gave me room to put it on the shelf on the back side of the firewall, or even upside down. And since it's sealed, negative G maneuvers don't matter to an AGM, and heat isn't as detrimental either. I ran my Odyssey 680 for something like four years in N56ML, and then let it sit for two years before I swapped it into N891JF. That would have killed a conventional lawn mower battery, but the 680 still cranks N891JF on the coldest of days. Leaving your battery on a trickle charger is no longer required with an AGM, unless you live in Alaska. And of course you could buy three lawn mower batteries for the cost of an (Odyssey or equivalent), but you'd have missed a few days of flying due to dead battery surprises. And the total life span of an Odyssey is probably about the same as three lawn mower batteries anyway, if not more. The Odyssey 680 can be bought for $105 with free shipping at the link below, while a Walmart mower battery is $39. I was using the KRnet search engine to look for "Odyssey" and ran across a post that mentioned the Deka ETX201 battery. The Deka AGM is even more powerful (20Ahr vs 16Ahr) and can be bought for $79 plus shipping (always the wildcard), which is pretty attractive in my mind, having just spent $105 for a new 680 that I apparently don't even need yet! Looking at the lawn mower battery in this photo, the mower battery has a higher 230 CCA (cold cranking amps @ 0 degrees F) than the Odyssey's 170 CCA, but for how many years and how long after a full charge? I think the user ratings of AGM batteries says a lot. The Odyssey 680 is something like 4.75 on Amazon...not too shabby, but the Ever Green mower battery is less than 2.5. But as Larry would say, "your mileage may vary"... Odessey 680 - http://www.batterymart.com/p-odyssey-pc680-battery.html?gclid=CjwKEAiA3vamBRDJ1Lfwt5Pckw4SJAAdhnk2Xu99P2b363nn1Q_Aqo14eCbKHU3Z1MY2UJVJ6PpVNhoCbUHw_wcB Deka 20 Ahr http://www.techbatterysolutions.com/Deka-ETX20L-Battery-p/etx20l.htm?utm_medium=cse_source=shopzilla_term=ETX20L -- Mark Langford ML at N56ML.com http://www.n56ml.com -- next part -- A non-text attachment was scrubbed... Name: Odyssey680vsMowerBattery.jpg Type: image/jpeg Size: 89146 bytes Desc: not available URL: <http://list.krnet.org/mailman/private/krnet_list.krnet.org/attachments/20150213/8230813c/attachment.jpg>
KR> Jeff Lang -Fuel Management\
Jeff Lang, What is the name and model number of the fuel management device you have in your KR and Sonerai and where can it be bought? Mark Jones (N886MJ) Stevens Point, WI E-mail: flykr2s at charter.net Web: www.flykr2s.com
KR> Belly board
Joe, I think it can be made to work with the extra drag you are installing, but there are a couple of issues with your plan. #1), Your KR can land much slower than 70 mph. You should be able to touch down around 55 mph if you hit your approaches right. That's an approximate speed because it depends a lot on which wing you have, flaps, weight, etc. With flaps and RAF 48 Diehl wings, I stall at 52 mph. Your KR can be build to land slower than mine. #2) Hard braking at high speed isn't all that great on my KR. I know if I touch down a bit hot and want to brake hard, I'll get quite a bit of chatter from the glass gear flexing back. I simply can't brake hard until I get slowed down a bit. I've got good Cleveland brakes in excellent condition. It's the gear legs that flex a bit, but my gear legs are longer than others, so that "may" be the root of the high speed chatter. #3) Before I put flaps on my KR, I landed at a short runway where I had to drop over a tall tree at the end of the runway. I picked up too much speed dropping in over the tree, so forced the plane on the runway a bit fast and figured I'd brake hard to make the end of the runway. I came very close to sailing off the end of the runway. Even the good Cleveland disc brakes were fading pretty badly by the end of the runway. This experience convinced me to add flaps to my KR. You've already addressed this issue, but the point is that even the best 5:00x5 brakes will fade as they get hot. You may want to consider going to a larger 6:00x6 brake with low profile tires. Larry Flesner had his KR configured that way for a few years. #4) You don't say whether this is grass or really smooth, but braking action isn't very good on grass, and even less so with every little bump in the grass. The smaller the tires, the less traction you're going to have on the grass. Again, I think it can be done, but there are a few issues to be worked out and a lot of practice to get there. -Jeff Scott Los Alamos, NM > I feel that I should provide full disclosure in my response to your question. > I fly out of a 1200 foot grass strip. I have no problem taking off and > landing. I have not flown out of my airfield with my KR2 yet but I have put a > lot of thought into the situation and I believe that the KR2 can be safely > flown out of a 1200 foot strip.? > > Touchdown should be at about 70 mph. I plan to have some high quality > hydraulic disc brakes. Touch down at the edge of the field and begin braking. > I have a tail dragger so the fuselage will remain level until the speed is > low enough to drop the tail. A bellyboard or airbrakes could be helpful.? > > I am very interested in how things work for you. ?Please keep me informed. > ?I'm at least a few months out before I am ready for taxi testing.? > > Joe > Sent from my Verizon Wireless 4G LTE smartphone > > Original message From: Pierre via KRnet > Date:02 > > > > I installed both flaps (20" X 12" inboard) as well as a belly board > (clearance 2" hanging 90 degrees down). The idea is to use flaps on approach > and use speed brake after touchdown. I will be testing on a 3,000 feet > strip, but my personal strip is only 1,200 feet, so want to see if I can > land within the 1,200 feet limit employing both systems in the sequence > described above. > > > > Has anyone tested the amount of speed loss per 10 degree implementation of > the belly board in straight and level flight? For example a 10 degree > deployment reduce speed by 10 knots at 1,700 rpm. Also any advise or > comments wellcome, both possitive and negative. > > > > The plane is now extremely close to finally testing and hopefully flightJ > > > > Take care! > > Pierre > > KR2S (98% compelted) > > Wittman Tailwind (80% completed) > > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
KR> one engine/two props
At 04:42 PM 2/13/2015, you wrote: >Yep, it was a J-3 >+++ If you're speaking of the one Mike posted a week or so back, it was a Tripacer, not a J3 As for single engine, two props, I don't recall another single aircraft since the Wright Flyer, 100+ years ago, other then multi rotor helicopters and other VTOL aircraft, that used that configuration. I can't imagine how you could adapt that system to a KR but then, there are a lot of things I can't imagine. One thing I am sure of, if you build with one engine and one prop, you'll be in the air years sooner and enjoying the wonderful time of flying a KR. Larry Flesner
KR> KRnet Digest, Vol 3, Issue 44
On 2/13/2015 4:52 PM, Patrick Driscoll via KRnet wrote: > I am trying to remember a picture of an airplane that I saw years ago. > I think it was a J3 with two props mounted on pylons sticking out to > each side of the aircraft. Anyone recall seeing this? > Patrick Driscoll Yes just recently, Virg
KR> Touchdown speed
Touchdown should = 1.3xVstall. 52 X 1.3 = 67.6 On 2/13/2015 3:25 PM, Mike Stirewalt via KRnet wrote: >> "Touchdown should be at about 70 mph" > For a KR that's just plain ridiculous. >
KR> KRnet Digest, Vol 3, Issue 44
I am trying to remember a picture of an airplane that I saw years ago. I think it was a J3 with two props mounted on pylons sticking out to each side of the aircraft. Anyone recall seeing this? Patrick Driscoll Saint Paul, MN patrick36 at usfamily.net www.pensbypat.com If you can read this, Thank a teacher If you are reading this in English, thank a veteran
KR> Two propeller system?
Hi, I have searched all over the internet and couldn't find any planes with one engine, but two (side by side) propellers. I had a young friend help me with my KR2S and he suggested it last night. First I dismissed the idea right of the bat, but after a nearly sleepless night, I think it just might work Two props = nearly twice the thrust? I don't think the engine will strain too much, although it might help if the props are a bit smaller.. Two pulleys on the crank and two cam belts running to each side of the engine to drive a prop. If one fails you still have a "spare" as wellJ Any thoughts or ideas? Take care! Pierre KR2S (98% completed) Wittman Tailwind (80% completed)
KR> KRnet Digest, Vol 3, Issue 44
> "I have searched all over the internet and couldn't find any planes with one engine, but two (side by side) propellers." Google "Wright Model B". It was their most successful design and the first aircraft to cross the U.S. Picture attached. How Old Men Tighten Skin 63 Year Old Man Shares DIY Skin Tightening Method You Can Do From Home http://thirdpartyoffers.juno.com/TGL3141/54de610d867dc610d5db4st03vuc -- next part -- A non-text attachment was scrubbed... Name: Model_B_San_Antonio.jpg Type: image/jpeg Size: 99139 bytes Desc: not available URL: <http://list.krnet.org/mailman/private/krnet_list.krnet.org/attachments/20150213/73903b61/attachment.jpg>
KR> Touchdown speed
> "Touchdown should be at about 70 mph" For a KR that's just plain ridiculous. How Old Men Tighten Skin 63 Yr Old Husband Uses Wife???s Wrinkle Cream, His Results? Amazing http://thirdpartyoffers.juno.com/TGL3141/54de5e451dace5e4577d3st04vuc
KR> Two propeller system?
Finish building and FLY ! Experiment later, Virg On 2/13/2015 7:16 AM, Pierre via KRnet wrote: > Hi, > > > > I have searched all over the internet and couldn't find any planes with one > engine, but two (side by side) propellers. I had a young friend help me with > my KR2S and he suggested it last night. First I dismissed the idea right of > the bat, but after a nearly sleepless night, I think it just might > work Two props = nearly twice the thrust? I don't think the engine > will strain too much, although it might help if the props are a bit > smaller.. Two pulleys on the crank and two cam belts running to each side of > the engine to drive a prop. If one fails you still have a "spare" as wellJ > >
KR> Two propeller system?
If you google a photo of the Wright brother's airplane - you will see the first one. On Feb 13, 2015, at 4:16 AM, Pierre via KRnet wrote: > Hi, > > > > I have searched all over the internet and couldn't find any planes > with one > engine, but two (side by side) propellers. I had a young friend help > me with > my KR2S and he suggested it last night. First I dismissed the idea > right of > the bat, but after a nearly sleepless night, I think it just might > work Two props = nearly twice the thrust? I don't think the > engine > will strain too much, although it might help if the props are a bit > smaller.. Two pulleys on the crank and two cam belts running to each > side of > the engine to drive a prop. If one fails you still have a "spare" as > wellJ > > > > Any thoughts or ideas? > > > > Take care! > > Pierre > > KR2S (98% completed) > > Wittman Tailwind (80% completed) > > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet- > leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to > change options
KR> Two propeller system?
At 06:16 AM 2/13/2015, you wrote: >Two props = nearly twice the thrust? + There is no free lunch. Each prop would have to be pitched to half the load of a single prop for the engine to turn the same rpm and produce equal power. The additional belt drive setup would rob additional horse power so you end up actually losing power over a single prop. Also, a single larger prop would be more efficient than two smaller props. Your tail / rudder would have to be enlarged to handle adverse yaw in case of one side failure. Still wonder why it's never been done? Larry Flesner
