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hfrensch

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Everything posted by hfrensch

  1. You are right Geoff, my mate asked me to accompany him to Reno (as we are both flying nuts) on the condition that he pays for the trip and I am willing to fly 1st class. Of course I accepted, and after Reno he flew our wives out to Las Vegas where we met them and had to contimue our holliday. Cheers Helmut.
  2. Reno 2004 Some photos I took at Reno air races September 2004. [ATTACH]3257.vB[/ATTACH] Dago Red P51 Mustang after race checkout [ATTACH]3258.vB[/ATTACH] Sea Fury pre race prep. [ATTACH]3259.vB[/ATTACH] Sea Fury (Septmber Fury) resting between races [ATTACH]3260.vB[/ATTACH] Bear Cat and a couple of T6's heading for start line [ATTACH]3261.vB[/ATTACH] Bear Cat(Rare Bear)
  3. Thanks Peter, two to three weeks is too long.I might give them a call and see if they do a change over service. Cheers Helmut.
  4. Hi Peter, do you have a turn around time to have this conversion done as I get withdrawal symptoms if i don't go flying at least twice a week. At a squeeze I might be able to stretch it and miss a week but that would cause uncontrolled shaking and looking skywards for stray aircraft. Cheers Helmut
  5. hfrensch

    Which Battery

    Andy, I have just fitted a new odyssey battery to my SP 6cyl, the previous battery was 4 years old. The reason I fitted another odyssey battery was that I was given this battery by my brother . He purchased a Lightening kit this week which included a new battery which he gave to me. If I were to buy one I would get a Deka battery which is cheaper and has more CCA. These can be purchased from Battery World in Adelaide. My brother has just fitted one to his Jab and it cranks like its on steroids. I think the battery model was a EXT 16L. I tried to confirm this with him but he is currently in the middle of Spenser Gulf fishing as he is a pro fisherman. There are a number of adelaide Jab owners using this battery at the moment and all are very happy with it. Cheers Helmut.
  6. Hi Ross, The suspension bolts on the SK&SP I Buildt are not used to locate the seat belts. The bolts I changed on the SK after 1500+ hours and over 2000 landings had bent bolts on rear of each leg. The oil pump rework is a must on the 6cyl as my freind had a oil cooler split on his SP on the way to narramine 2 years ago. The rework does drop the oil pressure a bit but stops the extreem pulsing. I have not reworked my brothers 2200 and this engine has now done 1000 hours and is about ready for a top end overhaul. I am sure when you get your J160 flying you will get an imense amount of pleasure from flying it as I have from my Jabiru's over the past 10 years. Cheers Helmut.
  7. hfrensch

    Which Battery

    Andy, the odyssey battery for a 6cyl Jab is a PC625 which has a CCA of 265. I have always used 15w/50 aero shell oil on all my Jabs. I even run my engines in on this oil (current 4cyl on 1000Hrs). It is better for winter and summer applications. The 15 viscosity is for when the oil temp is low which gives less friction during cranking and cold running, the 50 is when the oil warms up. With 100 oil is thick when cold and when hot temp the viscosity will be lower than 50. The only advantage with the 100 oil is its a bit cheaper. Helmut.
  8. I assume everybody knows about the Jabiru recommendation to upgrade the bolt size from 5/16" to 3/8" on the early Jabiru SK & SP models. I heard about it early last year but was slow to react due to what I thought were logical reasons. When I heard about the bolt size upgrade I removed the rear bolts on my SP 6cyl which had 95 hours on the airframe and inspected them. They were straight and had no stress marks. I also buildt a SK Jab (2nd Jab kit sold) completed May 97, which is now owned by brother . This aircraft had 1500hours on the airframe all with the 5/16" bolts. With this information I decided not to change the bolts. WRONG!!! Late last year I decided to fly to a friends place for some socialising, as he has his own strip and works from home repairing aircraft. When I was in the circuit at his place I noticed the hanger open people and other aircraft. With the wind direction it meant I would be landing in front of and near the hanger, so I thought I better make this a good landing as fellow aviators like to judge and make comments. My landing was a greaser and my friend commented to the other people "thats how you land a Jabiru". After the wheels touched I heard a crack as if a krock had hit the left hand wheel spat. As the plane slowed down I noticed the left hand wing slowly getting lower and just before the plane stopped the wing touched the ground. I immediately knew what had happened, the suspension bolt had brocken. Because the leg was bent right back I had to climb out of the right hand side not easy for a fat old block, especially when it could have been avoided if I had upgraded the bolts. The damage to the aircraft was minimal. A 2" scratch on the left hand wing tip, small scratch on the underside of the elevator, demolished wheel spat and brocken/bent suspension bolts. We lifted the wing on to the roof af a station wagon my friend had some new bolts which we fitted. With the help of my Level 2 friend we thoroughly inspected the Aircraft but found nothing wrong structurally wrong. I threw all the brocken fibre glass bits in the back had a coup of coffee and flew home . The following week I ordered 2 sets of 3/8" bolts from Jabiru and replaced the bolts in my brothers SK as well. [ATTACH]2405[/ATTACH] [ATTACH]2406[/ATTACH] [ATTACH]2407[/ATTACH]
  9. Not only should you have a plan to abort but also have a plan in case of a engine out on take off. Yesterday I had my second engine out on take off in 13 years of flying.My current aircraft is a fuel injected Jab 6 cyl SP. I took off in nill wind conditions and at 50ft retracted the flaps as I was about to exceed flap extention speed. I then pulled the stick back to hold a climp of 1800ft/min. At about 350ft into the climb the engine stopped. This got my immediate attention and I pushed the nose level and selected my landing spot in the paddock (which was being ploughed) in front of the runway. I then scanned the instrument panel and saw a hole where the master fuse was supposed to be , at the same time I saw the fuse and cap lying in my lap. I refitted the fuse back into the at about 50ft off the ground , the engine started immediately and I contiued my delayed climb out. I did not have to change my jocks but my heart rate improved considerbly. Every time I line up to take off I decide what to do if the engine fails shortly after take off. On this runway my plan is always to land in the paddock in front. When the engine stopped I already knew where to land this gave me the oportunity to find the problem and lucky for me fix it. Why the fuse fell out well tht is another story. Cheers Helmut.
  10. Ian reallly injoyed your three part trip report, but I have come to the conclusion that you need one of two things. Swap the CT for a Jabiru or hire a flight engineer to sit in the other seat ( only kidding) Helmut.
  11. Am currently drifting around Australia (only kidding), came across the following letter. Dear BJ: I hope you and Sharon are well. I know its been quite a while since you last heard from me, but Doreen and the rest of the family are all OK but I think they're getting a bit pissed off with station life, particularly when there's bugger all rain to speak of - and the cattle and sheep are dying all over the place! I'm writing to you, mate, because I need your help to get me bloody pilots licence back (you keep telling me you got all the right contacts, well now's your chance to make something happen for me because, mate, I'm bloody desperate). But first, I'd better tell you what happened during my last flight review with the CASA Examiner. On the phone, Ron (that's the CASA dickhead) seemed a reasonable sort of bloke. He politely reminded me of the need to do a flight review every two years. He even offered to drive out, have look over my property and let me operate from my own ALA. Naturally I agreed to that. Anyway, Ron turned up last Wednesday. First up, he said he was a bit surprised to see the plane outside my homestead because the ALA is about a mile away. I explained that because the strip was so close to the homestead, it was more convenient than the ALA, despite the power lines crossing about midway down the strip (it's really not a problem to land and take-off because at the half-way point down the strip you're usually still on the ground). For some reason Ron seemed nervous. So, although I had done the pre-flight inspection only four days earlier, I decided to do it all over again. Because the prick was watching me carefully, I walked around the plane three times instead of my usual two. My effort was rewarded because the colour finally returned to Ron's cheeks - in fact they went a bright red. In view of Ron's obviously better mood, I told him I was going to combine the test flight with farm work as I had to deliver three poddy calves from the home paddock to the main herd. After a bit of a chase I finally caught the calves and threw them into the back of the ol' 172. We climbed aboard but Ron started getting' into me about weight and balance calculations and all that bull****. Of course I knew that sort of thing was a waste of time because, calves like to move around a bit, particularly when they see themselves 500 feet off the ground! So, its bloody pointless trying to secure them as you know. However, I did tell Ron that he shouldn't worry as I always keep the trim wheel Araldited to neutral to ensure we remain pretty stable at all stages throughout the flight. Anyway, I started the engine and cleverly minimised the warm-up time by tramping hard on the brakes and gunning her to 2,500rpm. I then discovered that Ron has very acute hearing, even though he was wearing a bloody headset. Through all that noise he detected a metallic rattle and demanded I account for it. Actually it began about a month ago and was caused by a screwdriver that fell down a hole in the floor and lodged in the fuel selector mechanism. The selector can't be moved now, but it doesn't matter because it's jammed on 'All tanks', so I suppose that's OK. However, as Ron was obviously a real nit-picker, I blamed the noise on vibration from a stainless steel thermos flask, which I keep in a beaut little possie between the windshield and the magnetic compass. My explanation seemed to relax Ron because he slumped back in the seat and kept looking up at the cockpit roof. I released the brakes to taxi out but unfortunately the plane gave a leap and spun to the right, "Hell" I thought, "not the starboard wheel chock again". The bump jolted Ron back to full alertness. He looked wildly around just in time to see a rock thrown by the propwash disappear completely through the windscreen of his brand new Commodore. "****, now I'm really in trouble", I thought. While Ron was busy ranting about his car, I ignored his requirement that we taxi to the ALA and instead took off under the power lines. Ron didn't say a word, at least not until the engine started coughing right at the lift off point, then he bloody screamed his head off, "Oh God! Oh God! Oh God!" "Now take it easy, Ron" I told him firmly, "that often happens on take-off and there is a good reason for it." I explained patiently that I usually run the plane on standard MOGAS, but one day I accidentally put in a gallon or two of kerosene. To compensate for the low octane of the kerosene, I siphoned in a few gallons off super MOGAS and shook the wings up and down a few times to mix it up. Since then, the engine has been coughing a bit but in general it works just fine, if you know how to coax it properly. Anyway BJ, at this stage Ron seemed to lose all interest in my flight test. He pulled out some rosary beads, closed his eyes and became lost in prayer (I didn't think anyone was a Catholic these days). I selected some nice music on the HF radio to help him relax. Meanwhile I climbed to my normal cruising altitude of 10,500 feet (I don't normally put in a flight plan or get the weather because as you know getting NAIPS access out here is a f#*% joke and the bloody weather is always 8/8 blue anyway. But since I had that near miss with Saab340, I might have to change me thinking). Anyhow, on levelling out I noticed some wild camels heading into my improved pasture. I hate camels and always carry a loaded .303 clipped inside the door of the Cessna just in case I see any of the bastards. We were too high to hit them, but as a matter of principle, I decided to have a go through the open window. Mate, when I pulled the bloody rifle out, the effect on Ron was friggin' electric. As I fired the first shot his neck lengthened by about six inches and his eyes bulged like a rabbit with myxo. He really looked as if he had been jabbed with an electric cattle prod on full power. In fact, Ron's reaction was so distracting that I lost concentration for a second and the next shot went straight through the port tyre. Ron was a bit upset about the shooting (probably one of those pinko animal lovers I guess) so I decided not to tell him about our little problem with the tyre. Shortly afterwards I located the main herd and decided to do my fighter pilot trick. Ron had gone back to praying when, in one smooth sequence, I pulled on full flap, cut the power and started a sideslip from 10,500 feet down to 500 feet at 130 knots indicated (the last time I looked anyway) and the little needle rushing up to the red area on me ASI. ****, what a buzz, mate! About half way through the descent I looked back in the cabin to see the calves gracefully suspended in mid air and mooing like crazy. I was going to comment on this unusual sight but Ron looked a bit green and had rolled himself into the foetal position and was screamin' his f*&%# head off. Mate,talk about being in a bloody zoo. You should've been there, it was so bloody funny! At about 500 feet I levelled out, but for some reason we continued sinking. When we reached 50 feet I applied full power but nothin' happened; no noise no nothin'. Then, luckily, I heard me instructor's voice in me head saying "carby heat, carby heat", so I pulled carby heat on and that helped quite a lot, with the engine finally regaining full power. Whew, that was really close, let me tell you! Then mate, you'll never guess what happened next! As luck would have it, at that height we flew into a massive dust cloud caused by the cattle and suddenly went I.F. bloody R, mate. BJ, you would've been bloody proud of me as I didn't panic once, not once, but I did make a mental note to consider an instrument rating as soon as me gyro is repaired (something I've been meaning to do for a while now). Suddenly Ron's elongated neck and bulging eyes reappeared. His mouth opened wide, very wide, but no sound emerged. "Take it easy," I told him. "we'll be out of this in a minute." Sure enough, about a minute later we emerge; still straight and level and still at 50 feet. Admittedly I was surprised to notice that we were upside down, and I kept thinking to myself "**** I hope Ron didn't notice that I had forgotten to set the QNH when we were taxying". This minor tribulation forced me to fly to a nearby valley in which I had to do a half roll to get upright again. By now the main herd had divided into two groups leaving a narrow strip between them. "Ah!," I thought, "there's an omen. We'll land right there." Knowing that the tyre problem demanded a slow approach, I flew a couple of steep turns with full flap. Soon the stall warning horn was blaring so loud in me ear that I cut its circuit breaker to shut it up, but by then I knew we were slow enough anyway. I turned steeply onto a 75 foot final and put her down with a real thud. Strangely enough, I had always thought you could only ground loop in a tail dragger but, as usual, I was proved wrong again! Halfway through our third loop Ron at last recovered his sense of humour. Talk about laugh. I've never seen the likes of it; he couldn't stop. We finally rolled to a halt and I released the calves, who bolted out of the aircraft like there was no tomorrow. I then began picking clumps of dry grass. Between gut wrenching fits of laughter Ron asked what I was doing. I explained that we had to stuff the port tyre with grass so we could fly back to the homestead. It was then that Ron really lost the plot and started running away from the aircraft. Can you believe it? The last time I saw him he was off into the distance, arms flailing in the air and still shrieking with laughter. I later heard that he had been confined to a psychiatric institution - poor bastard! Anyhow, mate, that's enough about Ron. The problem is I just got a letter from CASA withdrawing, as they put it, my privileges to fly; until I have undergone a complete pilot training course again and undertaken another flight proficiency test. Now I admit that I made a mistake in taxiing over the wheel chock and not setting the QNH using strip elevation, but I can't see what else I did that was so bloody bad that they have to withdraw me flamin' licence. Can you? Anyhow mate, the reason for writing to you is to ask if you know any flight instructors who would be willing to come out the station for about 2 months to help get me back up to speed. I'll pay them good money while they're here and they won't have to worry about paying for food or accommodation. Looking forward to your response. Until then, take care, mate. Kindest regards Licence.doc Licence.doc Licence.doc
  12. I will post some photos when I work out how to do it.
  13. I would like to give a brief description of the Electronic fuel injection I run on my 6cyl jab. The sytem is the simplest I could come up with after many years of trial and error. In my previous job (retired July 2003) I worked for Mitsubishi Motors Australia in product development . I managed the engine development and testing department. This gave me the the ability to source parts and develop the EFI system I am currently using. I have run this EFI on my Jab for 16month, it has done 130 trouble free hours on the engine. Fuel burn is between 14 to 17 ltrs/hr with good power output. Longest trip was from Wellington South Aust to Narramine last Easter. This system uses throttle body injection. The throttle body is fitted with 2x32mm blades . The injectors are on the engine side of the blades. For engine load a MAP(manifold absolute pressure) sensor is used. This is the simplest and most accurate way to take care of engine load and altitude correction. Air inlet temp sensor is used to help with air density correction and is fitted at the inlet to the throttle body. A hall effect pick up is used to monitor engine RPM. I decided not to use a engine temp sensor because it is difficult on a air cooled engine to get the type of curve I wanted. In its place I use a 0-10K ohm pot (rehostat) which is used like a choke on a carb engine and is only required for start on a cold day.No TPS ( throttle position sensor) is used and this helped to simplify the system. The ECU (electronic control unit) which runs the system is a Haltec F9 fuel only unit. The fuel supply is taken care of by a high pressure electric pump and the pressure is regulated by a regulator referenced to manifold pressure. As you can see its a very basic system but to get it to work correctly the fuel maps had to be set up accurately. This was and is a very difficult job and engine failure can be the result of wrong mapping. Once the maps are set up for al load and RPM condition the air fuel ratio will not vary regardless of conditions because the ECU corrects for the load,temp and atmospherc changes. All I know is my Jab is a pleasure to fly climbs at 2000ft/min cruises at 115Knts indicated at 2600rpm. VNE(132knts) can be achieved on climb.
  14. Thanks for the welcome Ian, you read correctly I designed and fitted a simple elecronic fuel injection system to my engine. The engine has now done 124 hours with this system and it is performing exceptionally well.Maybe a should give a run down of the system in the engine section of this web site.
  15. I have been for 13 years starting in trikes. I have built 2 jabs the first I built was there 2nd kit jabiru produced. My current jab is a 3300 (with EFI)SP500.which I finished building in July 2005. I fly out of a club strip in Wellington South Australia at the end of the Murray River. I am looking forward to reading the forums and possibly meeting some of you at fly ins around the country.
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