Steph, Speed of the aircraft will pick up quickly as you continue working on drag reduction. It makes a big difference on an aircraft this slick. Congratulations!
-Jeff Scott > Sent: Wednesday, October 02, 2019 at 2:26 PM > From: "Stef den Boer via KRnet" <[email protected]> > To: "krnet krnet" <[email protected]> > Cc: "Stef den Boer" <[email protected]> > Subject: KR> Update Steph and his dad > > Mike you are right, I need to post aan update.😄 > > Here a Report after 12 flight ours. > > After the record building time (started in 1986) we finished our KR2S > listening to the name PH-TDB. If you Google her callsign you wil find a few > pretty Nice pics, but is not a excuses that I did not update my website. Mike > you gave me a trigger to start thuis eventing with the update.! > > > Oke after a few years of building, the time was there to bring our beauty to > an AirPort. After a few days off testing our bird was ready to go. > > Our test pilot came in and we did a few checks and told him how everything > works. (He was already one`s in our garage were we build our kr2). Did Some > taxi tests and hè said hè knows enough. We arrange an other KR2 ( the PH-MIJ) > for an trainigs flight for my test pilot. > > When he came back he told me...time to go. > > Planning was the frist flight to go alone and than with me. Third flight with > my dad. > > > Straped our pilot in the seatbelts , camara`s on fuel oké....ready to go. > > After a long run (the plane sticked more to the runway than hè expected) than > the PH-TDB choose to go....iT is Airborn. Yessssss > > > When hè came back, hè had 2 issues. One, oil temp. 2 the plane wants to go > nose down. Oil temp was in upper limits, so that was no problem. Nose down, > quick solution was more weight to get the W&B more aft. > > > So After a check, I jumped in the plane togther with my test pilot. The aft > stik force was almost gone so we had to install an temp trim tab. > > My dad went also for a 20 min flight and had the day of his live. > > > The next day I found an oil leak, did an check and found iT was Form the > front crankshaft bearing. It was my mistake because is made the Carter > ventline to small, so the high inner pressure dammaged the FWD bearing seal. > in 2 days the seal was replaced and we were ready to go again. > > We started with a training for my self to learn the plane myself. We did Some > stall test and calebitared the stall warning. My own made smart probe works > (garmin said it would not work...) > > After 3 hours and 15 touch and go`s I went solo. Not realy relaxed but iT > worked fine, I did 5 T&G`s so the rest of flying I have to learn my self. > > I hired for one month an very expencive hangar to be on an AirPort with a > long asphalt runway so I want to go because the month was almost finished. We > have to fly from EHTE to EHMZ. The trip is about 110 Miles so I did it > together with my test pilot. > > > This trip was good, feels great and getting a bit used to it that I have my > own plane. The frist time that you gave yourself the time to look > around....than you see your OWN Made wings...winglet.....that feelings is > great! > > In the New hangar I Made an elevator for the hole plane, it save me a lot of > money. That works now great. > > > The high oil temp > > After we are satteld in the new hangar we replaced a new oil cooler. A bigger > one from 11 rows to 19 rows. IT is a lot of work if you have to do this at > one houre drive from your house. > > The first flight with the new cooler was not bringing me wat I want. In > cruise 120 degr C solo. So that was pitty. > > Bussy with closing gaps, making different airflow, spoilers below, bigger > outflow ect ect but I am still not setisfied. Solo it is now 113 degrC. > Outside temp 16 at 2000ft > > Next week I Will get a pressure instrument so I can measure in front off the > cooler and direct behind. Than I know what to do. If I need a bigger or a > second cooler or do I have a airlock... we Will see. > > > Strange vribration > > Sometimes I had a intermitted vibration. We tought is can be the clutch from > the prop because it is evrytime above 80% or the prop itselve. But last week > I had at one`s a continu vaibration. And a different in my EGT 100 c . I was > 5 min from the field so no stress. > > I did a compleet inspection and changed oil, boogies. Found Nottingh strange. > Tied the plane to my car and did a run up. After 2 min at 80% the EGT problem > came agaiin in. There was one bobine broken, installed a new one and the > problem was solved. Happy that the BMW is having 2 spark plugs and bobines > at each cilinder. The power is realy unbelevible. > > Engine performance > > The 110 HP BMW engine is great....IT runs smooth. > > The take off is everytime an experiance. IT flyes realy quick from the > runway. Alone I have a rate off climb I think 2500 but fore dure 2000 ft a > minute. With the prop blades at 18,5 degre. > > With 2 pas I have seen 1800ft a minute. > > > The cruise performance I am not that happy because I think it cruising > 120KTS. (Hoped 140KTS)But some other pilots told me that the engine Will > produce probbably more power when the oil temp is lower so we Will see. Also > need to change the extra trimtab...I think it procece a lot off drag. > > I am not feelings at this moment that relaxed in the air that I do not higer > speed than 135. But it is reley quick at 135kt if you gave Some more throllte. > > Landing. > > THe landing is with calm wind easy. Final 70, mid final 65, the threshold > 60....I think the 60 is to quick. Or my instrument gave to less speed than I > am flying, My GPS camera gaves me 7 kts more everytime. I am also landing in > grass so this gaves always a more speed feelings. > > I called my test pilot to go for an lower thresshold speed but hè said not at > this moment. So I wait till I have the engine temp at 100 degr. Than we can > finish the test report. > > > Stabilo > > I want to remove the (extra) trim tab and think about something to do with a > spring, to get the waight from the elevator. I think this will solve the > problem because my elevator is very biutiful but also very heavy. > > > At this moment concusion. > > I am happy with the plane, Used to the stick forces and flying it relax. I am > 220 pound and together with Someone 200 pounds it flyes like a rocket. > > If I fly solo I need after 30 sec a bit rudder right. 2 pax...a bit left. > That is oké I think. Ailerons no input needed in flight. Stabilo I need to > work on. > > The engine is for me the cheapest wat to have a modern engine. Happy with it. > > The prop Woodcomp 3 bladed in flight adjustible I have to less experiance > with this. We will see in the future. > > > I cant wait to go for the first time alone to an other airfied...thats the > next step. > > > > Interview > > We had an interview for a local News paper. > > You need Google translate but there are a few Nice pictures in. > > https://s3.amazonaws.com/online.pubhtml5.com/rqxi/whzt/index.html > > > I already told you all that tis is a very Nice newsgroup. We all help > eachather and the result is onother Nice KR2 is Born. > > Lot of thanks to you all. > > As you told me severall times keep on building. > > Now I say the same. It is worth IT!!!! > > > So and now I have to go to update my websit. > > > Stef > > > > > > > > > Steph and his dad are building the KR-2S see > http://www.masttotaalconcept.nl/kr2 http://www.masttotaalconcept.nl/kr2 > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/[email protected]/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to [email protected] > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/[email protected]/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to [email protected]
