KR> New subject - This is not KR!
and you do not have the power i have a kr2s i know what motor gives the most grunt - Original Message - From: "Mark Langford" To: "KRnet" Sent: Sunday, December 06, 2009 12:49 PM Subject: Re: KR> New subject - This is not KR! >I am sure there must be a Jab forum where this could be discussed, unless > you are putting it on a KR and educating us all how to keep it cool on a > KR. There are several KRs with Jabirus installed, and many of them have or had cooling issues, although KRs are fast enough that cooling isn't usually as large an issue as on a slower plane. Apparently those considering using a Jabiru should be aware that special attention should be paid to cooling issues. At the risk of sounding like I'm pushing the Corvair, Corvairs have no such issues, and VW's don't seem to have a problem with cooling either. Mark Langford N56ML "at" hiwaay.net website at http://www.N56ML.com ___ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
KR> New subject
hi dene i put a jab 3300 in a murphy reagade i had the same problem to fix it increased the oil cooler size i then built a ram air box with six scat hoses of different sizes i connected the hoses to the firberglass cowling covers above the heads to check the temps on each cylinder i borrowed a thermo coopeler box most drag shops or hot rod type shops have them it is like a temp gauge that has up to eight head connecting points you can read all head and oil temps at the same time i found up to 50c difference between cylinders i increased or decreased hose sizes as required i can fly the plane at 50 kn or 90kn the temps stay in the green i also tow gliders with it and still in the green it is a bit of mucking but worth it when i got it wright i connected cht to the hottest cylinder i have about 10 degree difference between hottest and coldest you shoud also work on air inlet one third air outlet two thirds now have 500 hours with that set up i also fly in a hot country best regards russ - Original Message - From: "Dene Collett" To: "KRnet" New subject Hi guys As I only download email every three days or so, I have to sit and sift through a lot of e mail to find the interesting stuff. I consistently find certain subjects rehashed over and over so I thought I would start a new one. I would like to start a thread on cooling systems or rather the theory of cooling systems. I have been battling for months now to get a 3300 Jabiru to cool correctly in a Whisper motorglider. I have been through three different incarnations of cowl/cooler setups with little success. Either the cylinders cool sufficiently at the expense of the oil temps or vice versa. I have come to the conclusion that because of the low speeds obtained by the plane, it is no use looking at other GA aircraft for ideas for outlets. I think that in general motorgliders and low speed aircraft in general use more ram air cooling and just make their inlets big enough to allow enough air to pass through. The outlet is just a big hole at the bottom of the cowl. I have tried ducts that can be closed during gliding to minimize drag and shock cooling but with little to no success. Unfortunately I do not have any education in aerodynamics or fluid dynamics so I am going by real world experience and testing. Lets get a thread going here so we can all learn something. Regards Dene Collett Avlec Projects cc Port Elizabeth South Africa ___ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
KR> discouraging
don't get too worked up just remember your feet are connected to your legs so use them > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.409 / Virus Database: 268.15.15/581 - Release Date: 9/12/2006 > >
KR> discouraging
the best thing you can do is to have a fly in krs rvs any homebuilt > > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.409 / Virus Database: 268.15.15/581 - Release Date: 9/12/2006 > >
KR> My 1st flight !!!!!!
hi krheads I bought a s model one month ago I live on the west coast of Australia the plane is 2500 miles away on the east coast last week I flew to the east coast with the intenson to fly my plane home on sat 25 oct i had the hand over flight all went well sun 26 drove to the airstrip very early nobody there got ready for my first flight lined up on runway 300 did the checks eased the power on tail up at about 45 lifted of about 60 held it down till 80 then climbed away very nice to fly landing no problem however it does float to far but belly board will fix that i hope i flew more on sunday on monday i flew local did stalls diferant approach speeds looking forward to next morning to begin my long flight home on my flight plan i worked on 125 knots at 15 litres per hour i had fuel stops orginized lots of preparation went in to this flight after my last flight on monday i was taxing to the hanger a stange noise came from the motor i cut the motor all temps and pressurs where in the green after the motor had coolled i turned the prop by hand it was binding on one cylinder i nearly started to cry i put it back in the hanger so i bought six pack of beer the next day i went back to the hanger pulled the wings off removed the motor rented a truck i put it in a friends shed i did not have the tools or the time to do much more so i flew home on the big plane so I have to get it home may be truck or train or ship i have not spoken for 4 days just been too angry
KR> Re:jabiru
hi I have a 125 hp jab in a bi plane best motor ever but cost a lot and back up is bad 4000 motors sold to date - Original Message - From: "Hennie van Rooyen [HQP]" To: "KRnet" Sent: Thursday, September 14, 2006 2:18 PM Subject: RE: KR> vw performance > > Hi Dene, Serge, Pete & all, > > Thank you for your response. > > Dene, I will definitely look at your suggestion - sounds really good. > > Pete, I agree with you on the Jabiru. I have never looked at their prices > over here - I just assumed that they would be expensive & I think my > assumption is correct. > > Happy building to everyone, > Hennie > > > > "For an ignition system...complete ignition from a Honda CB750F or CB900F" > > - > This e-mail is confidential and is for the addressee only. > Please refer to http://www.kumbaresources.com/email-disclaimer for > important disclaimers. > - > > ___ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.405 / Virus Database: 268.12.3/447 - Release Date: 13/09/2006 > >
