Europa-List Digest Archive

Fri 06/22/12


Total Messages Posted: 18



Today's Message Index:
----------------------
 
     1. 12:27 AM - Re: First flight of G-CGZV Europa Tri-gear  (Bob Harrison)
     2. 12:41 AM - Re: Re: bonding fuselage top (JR Gowing)
     3. 12:44 AM - Re: First flight of G-CGZV Europa Tri-gear  (JR Gowing)
     4. 01:13 AM - Re: bonding fuselage top (G-IANI)
     5. 01:57 AM - Re: First flight of G-CGZV Europa Tri-gear  (Mike Gamble)
     6. 07:27 AM - Re: N120EJ first flight (AirEupora)
     7. 07:37 AM - Re: Re: N120EJ first flight (Carl Meek)
     8. 07:41 AM - Re: pitot/static port cover? (Richard Lamprey)
     9. 07:51 AM - Re: Re: N120EJ first flight (Greg Fuchs)
    10. 08:52 AM - Re: First flight of G-CGZV Europa Tri-gear (graeme bird)
    11. 09:17 AM - Re: Re: N120EJ first flight (Fred Klein)
    12. 09:20 AM - Re: Re: pitot/static port cover? (Fred Klein)
    13. 10:11 AM - Re: First flight of G-CGZV Europa Tri-gear  (Ivan Shaw)
    14. 12:40 PM - Re: Europa Fly in (Carl Meek)
    15. 01:29 PM - Re: First flight of G-CGZV Europa Tri-gear (nigel henry)
    16. 01:59 PM - Re: Europa Fly in (Steven Pitt)
    17. 02:26 PM - Re: Europa Fly in (Bob Harrison)
    18. 03:02 PM - Re: Re: Contact detail & Help (Bud Yerly)
 
 
 


Message 1


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    Time: 12:27:15 AM PST US
    From: "Bob Harrison" <ptag.dev@tiscali.co.uk>
    Subject: First flight of G-CGZV Europa Tri-gear
    Hi! Richard, Splendid achievement . Just think next year you may get to Wickenby Wings and Wheels 2013 ! But don't look for it South of Watford! Best regards Bob Harrison. From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Richard Collings Sent: 21 June 2012 11:21 Subject: Europa-List: First flight of G-CGZV Europa Tri-gear Hi everyone I am pleased to announce the first flight of my Europa Tri-gear out of Hinton in the Hedges on Wednesday 20th June [My birthday] at 13.33 Hrs in the capable hands of Andy Draper. All went well on the 30 min flight more info later. My thanks to everyone involved Richard


    Message 2


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    Time: 12:41:44 AM PST US
    From: "JR Gowing" <jrgowing@bigpond.net.au>
    Subject: Re: bonding fuselage top
    There has been several other recent emails of good advice already. Make sure you have all your needs on hand, brief your team carefully before starting. JR (Bob) Gowing Kit327 in Oz -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of bill mcclellan Sent: Friday, 22 June 2012 5:44 AM Subject: Europa-List: Re: bonding fuselage top Paul, some suggestion, do it with your room as cool as possible to give the process as much time without the glue going off. Rehearse the process first with several helpers. Don't try to mix the whole amount in one batch/container so as to be too hard to handle. If you have glued with redux before, you know how thick to get the glue with the flox. It is important not to be too thin or too thick. You probably aren't but don't use screws as they suck the skins down too tight leaving an indentation at each screw which has to be filled later. Scrape off extra glue that oozes out of seam but don't unduly disturb the fuselage skins in doing so. Bill Read this topic online here: http://forums.matronics.com/viewtopic.php?p=376242#376242 ----- No virus found in this message. Checked by AVG - www.avg.com


    Message 3


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    Time: 12:44:27 AM PST US
    From: "JR Gowing" <jrgowing@bigpond.net.au>
    Subject: First flight of G-CGZV Europa Tri-gear
    Great Birthday present! JR (Bob) Gowing 327 in Oz From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Richard Collings Sent: Thursday, 21 June 2012 8:21 PM Subject: Europa-List: First flight of G-CGZV Europa Tri-gear Hi everyone I am pleased to announce the first flight of my Europa Tri-gear out of Hinton in the Hedges on Wednesday 20th June [My birthday] at 13.33 Hrs in the capable hands of Andy Draper. All went well on the 30 min flight more info later. My thanks to everyone involved Richard _____ No virus found in this message. Checked by AVG - www.avg.com


    Message 4


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    Time: 01:13:09 AM PST US
    From: "G-IANI" <g-iani@ntlworld.com>
    Subject: bonding fuselage top
    Paul 400 grams is about right. Mixing is the time consuming bit. Getting it on is easy with an icing bag and someone with cake decorating skills. See attached Ian Rickard G-IANI XS Trigear, 300hours Europa Club Mods Specialist e-mail g-iani@ntlworld.com From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Paul & Vanessa Munford Sent: 20 June 2012 18:11 Subject: Europa-List: bonding fuselage top Hi guys, Paul Munford here, kit 625 tri gear NG. I'm soon to bond the fuselage top & was wondering just how much resin to mix ??? Anyone out there done this job recently ? Also any tips on mixing large amounts of resin & flox for this job. Thanx in advance.


    Message 5


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    Time: 01:57:43 AM PST US
    From: "Mike Gamble" <mp.gamble@talktalk.net>
    Subject: First flight of G-CGZV Europa Tri-gear
    Congratulations Richard. A great birthday present and lots of fun to come. Mike Gamble G-CFMP


    Message 6


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    Time: 07:27:50 AM PST US
    Subject: Re: N120EJ first flight
    From: "AirEupora" <AirEupora@sbcglobal.net>
    On Friday, June 8, 2012, N120EJ soared into the air for all of three minutes. Cylinder head temps were going towards redline so I had to shut down the engine and return for landing. After some work on the baffles and re-pitching the prop it again took off on, June 11, 2012, only to have to return to land. Temps were still high again. A phone call was made to the Engine Rep in Fresno, Jim Cormick, and he wanted pictures of my baffling. When he called me back he told me that I must be a Lycoming/Continental mechanic as the baffling was all wrong for the Jabiru. I then ripped the baffling out and installed some new shorter, smaller baffling. On Wednesday the 13th I took to the air this time I made it around the pattern. The temps were still high but within limits, but the elevator control felt wrong and trim was going the wrong way. Again work was done on the airplane. Pilot's control stick was move back; elevator control mass weight bar was move so that the elevator had more down movement; trim wiring in cannon plug was switch so trim would go down when it was press to go down. The next flight, June 18th, I took off and actually went around the pattern twice before having to land. This time it was the oil temp. It was getting high. Once on the ground found out that I had put the wrong type sensor in the computer program. It was reading 56 degree hotter than it was. I was also able to download a flight log of the flight. It showed that Channel 4 and 5 were 500 degrees less than 1,2,3,6. Changed the EGT probes out by putting 3 into 5; 4 into 6. Ground run the engine and the cool cylinders stay on channel 4 & 5. Called MGL and they are sending a new EMS. So I'm waiting to get it and will fly it again. Overall, I'm impressed with the way the plane handles in the air. It is like a fast sports car. It leaps into the air. Im looking forward to the rest of the flight test program. Here is picture on the ground. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=376322#376322 Attachments: http://forums.matronics.com//files/img_2389_1024x610_109.jpg


    Message 7


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    Time: 07:37:17 AM PST US
    Subject: Re: N120EJ first flight
    From: Carl Meek <carlmeek@gmail.com>
    Hi, I would love to hear some more details about the changes you make to baffling - my Jabiru engine still runs very hot and I'm trying to make some improvements currently. Also, I'd be interested to hear cruise speed / RPM / Fuel Burn. What propeller are you running? Regards, -Carl. On 22/06/2012 15:26, "AirEupora" <AirEupora@sbcglobal.net> wrote: > >On Friday, June 8, 2012, N120EJ soared into the air for all of three >minutes. Cylinder head temps were going towards redline so I had to shut >down the engine and return for landing. > >After some work on the baffles and re-pitching the prop it again took off >on, June 11, 2012, only to have to return to land. Temps were still high >again. A phone call was made to the Engine Rep in Fresno, Jim Cormick, >and he wanted pictures of my baffling. When he called me back he told me >that I must be a Lycoming/Continental mechanic as the baffling was all >wrong for the Jabiru. I then ripped the baffling out and installed some >new shorter, smaller baffling. >On Wednesday the 13th I took to the air this time I made it around the >pattern. The temps were still high but within limits, but the elevator >control felt wrong and trim was going the wrong way. Again work was done >on the airplane. Pilot's control stick was move back; elevator control >mass weight bar was move so that the elevator had more down movement; >trim wiring in cannon plug was switch so trim would go down when it was >press to go down. > >The next flight, June 18th, I took off and actually went around the >pattern twice before having to land. This time it was the oil temp. It >was getting high. Once on the ground found out that I had put the wrong >type sensor in the computer program. It was reading 56 degree hotter >than it was. I was also able to download a flight log of the flight. >It showed that Channel 4 and 5 were 500 degrees less than 1,2,3,6. > >Changed the EGT probes out by putting 3 into 5; 4 into 6. Ground run the >engine and the cool cylinders stay on channel 4 & 5. > >Called MGL and they are sending a new EMS. So I'm waiting to get it and >will fly it again. > >Overall, I'm impressed with the way the plane handles in the air. It is >like a fast sports car. It leaps into the air. Im looking forward to >the rest of the flight test program. > >Here is picture on the ground. > > >Read this topic online here: > >http://forums.matronics.com/viewtopic.php?p=376322#376322 > > >Attachments: > >http://forums.matronics.com//files/img_2389_1024x610_109.jpg > >


    Message 8


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    Time: 07:41:03 AM PST US
    Subject: Re: pitot/static port cover?
    From: "Richard Lamprey" <lamprey.richard@gmail.com>
    Flying a Cessna in Uganda, I have had an insect (mudwasp) block the pitot with mud over a 1 hour stop at a bush strip! For the Europa pitot cover, I use a short piece of plastic tube of right diameter to fit, sealed at the end with a long stretch of red duck tape doubled over to form a 50 cm ribbon. Cheap and effective. Best Richard Europa reg 5Y-LRY, Kenya Read this topic online here: http://forums.matronics.com/viewtopic.php?p=376326#376326


    Message 9


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    Time: 07:51:07 AM PST US
    From: "Greg Fuchs " <gregoryf.flyboy@comcast.net>
    Subject: Re: N120EJ first flight
    Very pretty paint job. Congratulations on your first flight!


    Message 10


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    Time: 08:52:44 AM PST US
    Subject: Re: First flight of G-CGZV Europa Tri-gear
    From: "graeme bird" <graeme@gdbmk.co.uk>
    congratulations, a great feeling, maybe see you around as you are so close. -------- Graeme Bird G-UMPY Mono Classic/XS FWFD 912ULS/Warp drive FP Newby: 35 hours g(at)gdbmk.co.uk Read this topic online here: http://forums.matronics.com/viewtopic.php?p=376341#376341


    Message 11


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    Time: 09:17:28 AM PST US
    From: Fred Klein <fklein@orcasonline.com>
    Subject: Re: N120EJ first flight
    > On Friday, June 8, 2012, N120EJ soared into the air for all of three > minutes. Rick, Thanks for posting the trials and tribulations of initial flight testing of a non-standard engine installation; keep up the great work...you're providing a dose of reality to our collective experience in the world of experimental aviation...best of luck at banishing the gremlins soon. Where are you based? What are your OATs? Fred PS: ...very elegant paint job!


    Message 12


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    Time: 09:20:29 AM PST US
    From: Fred Klein <fklein@orcasonline.com>
    Subject: Re: pitot/static port cover?
    On Jun 22, 2012, at 7:40 AM, Richard Lamprey wrote: > For the Europa pitot cover, I use a short piece of plastic tube of > right diameter to fit, sealed at the end with a long stretch of red > duck tape doubled over to form a 50 cm ribbon. ...thus we have added one more to the infinite uses of duck tape... cheers, Fred do not archive


    Message 13


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    Time: 10:11:09 AM PST US
    From: "Ivan Shaw" <ivanshaw@btinternet.com>
    Subject: First flight of G-CGZV Europa Tri-gear
    Well done Richard, now the adventure begins!! Kindest Regards Ivan From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Richard Collings Sent: 21 June 2012 11:21 Subject: Europa-List: First flight of G-CGZV Europa Tri-gear Hi everyone I am pleased to announce the first flight of my Europa Tri-gear out of Hinton in the Hedges on Wednesday 20th June [My birthday] at 13.33 Hrs in the capable hands of Andy Draper. All went well on the 30 min flight more info later. My thanks to everyone involved Richard No virus found in this message. Checked by AVG - www.avg.com


    Message 14


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    Time: 12:40:37 PM PST US
    Subject: Re: Europa Fly in
    From: Carl Meek <carlmeek@gmail.com>
    Hi Steven, What time is the BBQ running? Regards Carl Sent from my iPhone On 21 Jun 2012, at 20:08, "Steven Pitt" <steven.pitt2@ntlworld.com> wrote: > > The time is upon us!!!!! > The beer is on tap, the meat is marinading and Mrs Pitt has baked 3 cakes for the weekend!!! > > So where will you be on Saturday afternoon - come hell or high water (hopefully not much of either of those) - England don't play until Sunday so you cannot use that as an excuse not to be there. > > The weather reports are for brisk winds but sunny periods expected so flyin or drive in to Popham for the AGM on Saturday afternoon and the BBQ thereafter. > > See you there. > > Regards > Steve Pitt > Chairman, Europa Club > > > >


    Message 15


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    Time: 01:29:44 PM PST US
    From: nigel henry <gbupa@hotmail.com>
    Subject: First flight of G-CGZV Europa Tri-gear
    Hi Richard=2C congratulations and Hinton is a great strip to fly out of N igel From: ivanshaw@btinternet.com Subject: RE: Europa-List: First flight of G-CGZV Europa Tri-gear Well done Richard=2C now the adventure begins!! Kindest Regards Ivan From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@mat ronics.com] On Behalf Of Richard Collings Sent: 21 June 2012 11:21 Subject: Europa-List: First flight of G-CGZV Europa Tri-gear Hi everyone I am pleased to announce the first flight of my Europa Tri-gear out of Hinto n in the Hedges on Wednesday 20th June [My birthday] at 13.33 Hrs in the ca pable hands of Andy Draper. All went well on the 30 min flight more info la ter. My thanks to everyone involvedRichard http://www.matronics.com/Naviga tor?Europa-Listhttp://forums.matronics.comhttp://www.matronics.com/contribu tion No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2180 / 06/21/12


    Message 16


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    Time: 01:59:59 PM PST US
    From: "Steven Pitt" <steven.pitt2@ntlworld.com>
    Subject: Re: Europa Fly in
    AGM should be 3.00 and BBQ aiming for after the AGM. All is ready, we just need aircraft and members!! Steve ----- Original Message ----- From: "Carl Meek" <carlmeek@gmail.com> Sent: Friday, June 22, 2012 8:37 PM Subject: Re: Europa-List: Europa Fly in > > Hi Steven, > > What time is the BBQ running? > > Regards > Carl > > Sent from my iPhone > > On 21 Jun 2012, at 20:08, "Steven Pitt" <steven.pitt2@ntlworld.com> wrote: > >> <steven.pitt2@ntlworld.com> >> >> The time is upon us!!!!! >> The beer is on tap, the meat is marinading and Mrs Pitt has baked 3 cakes >> for the weekend!!! >> >> So where will you be on Saturday afternoon - come hell or high water >> (hopefully not much of either of those) - England don't play until Sunday >> so you cannot use that as an excuse not to be there. >> >> The weather reports are for brisk winds but sunny periods expected so >> flyin or drive in to Popham for the AGM on Saturday afternoon and the BBQ >> thereafter. >> >> See you there. >> >> Regards >> Steve Pitt >> Chairman, Europa Club >> >> >> >> > > >


    Message 17


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    Time: 02:26:11 PM PST US
    From: "Bob Harrison" <ptag.dev@tiscali.co.uk>
    Subject: Europa Fly in
    So sorry Steve but I had expected to come this evening but the weather is atrocious and I have dance partner waiting for me tomorrow night if you pardon the pun please accept a rain check/cheque. ( now if it was more in the midlands or even Wickenby !!!!! I could drive there!) Regards Bob H -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Steven Pitt Sent: 22 June 2012 21:59 Subject: Re: Europa-List: Europa Fly in AGM should be 3.00 and BBQ aiming for after the AGM. All is ready, we just need aircraft and members!! Steve ----- Original Message ----- From: "Carl Meek" <carlmeek@gmail.com> Sent: Friday, June 22, 2012 8:37 PM Subject: Re: Europa-List: Europa Fly in > > Hi Steven, > > What time is the BBQ running? > > Regards > Carl > > Sent from my iPhone > > On 21 Jun 2012, at 20:08, "Steven Pitt" <steven.pitt2@ntlworld.com> wrote: > >> <steven.pitt2@ntlworld.com> >> >> The time is upon us!!!!! >> The beer is on tap, the meat is marinading and Mrs Pitt has baked 3 cakes >> for the weekend!!! >> >> So where will you be on Saturday afternoon - come hell or high water >> (hopefully not much of either of those) - England don't play until Sunday >> so you cannot use that as an excuse not to be there. >> >> The weather reports are for brisk winds but sunny periods expected so >> flyin or drive in to Popham for the AGM on Saturday afternoon and the BBQ >> thereafter. >> >> See you there. >> >> Regards >> Steve Pitt >> Chairman, Europa Club >> >> >> >> > > >


    Message 18


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    Time: 03:02:06 PM PST US
    From: Bud Yerly <budyerly@msn.com>
    Subject: Re: Contact detail & Help
    Lovely design... However=2C my comments are based on an installation that is stock. Takes 4 0 hours from openning the box to engine fully installed and ready for start and is reapeatable with only the parts in the box. Esthetics aside=2C the dog box works but can be improved. Many do not care to have any auto systems such as heat exchangers which may malfunction. I do 146 at 5500/34 with a stock cowl. By all means=2C an extra hundred hours and cost will get you those extra 9 knots. It just costs money and time. The airplane is 20=2C000 compromises flying in close formation....Choose yo ur changes wisely. You have obviously enjoyed and profited from your changes. Congrats. Bud Yerly Custom Flight Creations=2C Inc. www.customflightcreations.com (81 3) 653-4989 > Date: Wed=2C 20 Jun 2012 14:04:55 +0200 > From: frans@privatepilots.nl > To: europa-list@matronics.com > Subject: Re: Europa-List: Re: Contact detail & Help > > On 06/10/2012 06:21 AM=2C Bud Yerly wrote: > > > If I do say so myself=2C I never have cooling issues in Florida at 95 > > degree summer days using 50/50 Anitifreeze. Judging by the calls and > > email success stories=2C these simple techniques work pretty much world wide. > > Although your solution might indeed work world wide it is less suitable > for Europeans. > > There are a few reasons for this: > 1) Your solution is focussed on more cooling air flow. Unfortunately > more cooling air also means more cooling drag. More cooling drag means > that higher power settings are required to achieve a desired cruise > speed. Although that might not be significant for those living in a part > of the world where fuel prices are only a fraction from what it is here =2C > for many of us here the fuel price is by far the largest cost involved > with flying our Europa's. > > In another posting you wrote: > "135 with the old pants at 5500/34 inches at 1000 MSL=2C" > "His trigear only goes 130 at max cruise." > > I do 130 with 27"=2C about 155 with 34". This is a heavy hi-top tri-gear. > Although I selected a very efficient prop and have Fred Kleins wing root > fairings=2C I believe that a large portion of the reduction in drag is > achieved by my modified cooling system. > > 2) Climate. I believe that in your area the weather is somewhat more > constant than it is here. This month I have been flying in cruise mode > in freezing temperature conditions (high altitude in Norway) and in > prolonged full power climbs with 35C OAT (Croatia). Unless you use > thermostats you can't achieve constant temperatures in all conditions. > > After numerous experiments this is what I have learned: > 0) Cooling drag is the main drag of modern efficient airplanes. Imagine > the air swirling around in the cowling=2C colliding in all kind of > obstacles=2C and flowing over tubular objects (worst airodynamic shape > possible) and finally leaving the airplane in the wrong direction and > with the wrong speed... > 1) The Rotax engine is for 95% liquid (oil=2C coolant) cooled. Forget > about airflow over the engine=2C apart from the cylinder walls no cooling > air is needed at all. Sure you can compensate for a poor liquid cooling > with air flow=2C but it is extremely inefficient. Once you have the liqui d > cooling working correctly=2C you can close off all holes. That's right=2C > ALL holes. This includes the two "eye's". the gills=2C the naca inlets=2C > the nose wheel opening=2C everything. There is only one small opening > needed to connect the Rotax shroud for cylinder wall cooling. > 2) The main problem in the stock setup is the radiator. The stock > radiator is too thick (not even to mention the tandem design). The > pressure difference required to maintain enough air flow is too large=2C > and you need very large openings to keep enough air flowing. I have > tried many carefully designed diffusers but I never got the stock > radiator working sufficient enough for prolonged full power climbs in > hot weather. > 3) Use an oil to water heat exchanger. This means that you have to focus > on the air flow of only one radiator=2C and also don't need an oil > thermostat and still have superfast warm-up times. > 4) Get away with the entire "dog house". It is ugly and it serves no > purpose. > 5) Use an adjustable cowl flap to control engine temperatures. > 6) Reroute the exhaust so the cowl opening points to the rear. I tried > to build an exhaust augmentor but I'm not sure if it really works. In > any case=2C the cowling air escaping around the exhaust opening flows in > the correct direction and doesn't upset the air stream. > > So. what I'm using now is a thin radiator=2C mounted flush with the > underside of the cowling. (Custom made=2C 300 Euro's). It is slanted so i t > follows the shape of the cowling. Because of the angle the horizontal > frontal area is very small=2C you can say it forms a natural diffuser. > Flow is controlled by an exit cowl flap. If the air flow is restricted > by the cowl flap=2C the air in front of the radiator even doesn't "see" > the radiator=2C the air flows over the surface and follows the shape of > the cowling as if the radiator doesn't exist at all. > The air leaving the radiator is recycled because it flows under the > engine=2C taking the heat of exhaust and turbo with it on its way out. No > separate openings for these items are necessary. > The coolant is also used to cool (or heat!) the oil via a heat > exchanger. Apart from the heat-up time=2C the oil temperature is always 5 C > higher than the coolant temperature=2C which I consider to be perfect. I > keep the water at 105C and the oil at 110C in all conditions. This is > the best for the engine and the efficiency. > For cylinder cooling you can use the standard Rotax shroud with the > opening under the propeller. I made my own shroud because of the vaccuum > pad alternator which prevents the use of the standard shroud=2C but the > idea is similar. > > After one year of using this=2C I can state the following results: > 1) Adequate cooling in ALL conditions. I have excecuted a full power > climb from 0ft to FL095 at 80 knots in an inversion layer with a OAT of > 35C for most of the trajectory=2C with the water temp not exceeding 110C > and the oil not exceeding 120C. This was with the cowl flap not yet > fully open. Although not yet tested=2C I'm convinced that the cooling > would work ok in OAT's of 45C as well. > 2) In cruise the cowl flap is typically only half an inch open=3B i.e. it > protrudes only a half inch below the belly of the airplane. Compare that > with the huge tunnelexit of the stock XS design! > 3) Unlimited ground operations=2C even in very hot weather. > 4) Superfast heat-up times. 5 minutes is even in the winter sufficient > to get the oil temp far enough up into the yellow arc to perform a take o ff. > 5) Low cowling temperatures=2C despite the lack of ventilation. > Temperatures don't exceed 60C=2C except briefly after engine shut off. In > hot weather I open the oil tank access door after landing for a few > minutes to let the hot air out. > 6) Weight savings. I have not weighed the difference=2C but I'm sure the > flat radiator and heat exchanger is lighter than the two stock radiators > and tunnel hard ware. > > About the picture: > This was the unfinished design. The final version is even smoother. > The only exit opening here is the proptrusion of the "tunnel" against > the belly of the fuselage. The nose wheel opening is sealed off and > flush with the belly. The cowl flap can be extended further but this is > the typical cruise setting. Quite a difference compared to the stock > tunnel=2C eh? > > In addition of the rectangular radiator opening I have two round inlets. > The one on the starboard side serves the intercooler for the turbo (via > a wedge diffuser and butterfly valve). You don't need this inlet if you > don't have an intercooler. The opening on the port side connects to the > cylinder wall shrouds. You could use the standard Rotax shroud with the > opening below the prop instead=2C but I made a round inlet on the port > side to maintain the symmetry. In most setups you can ommit these round > inlets. That would be an even cleaner nose! > The starboard inlet also facilitates the engine air intake. The port > inlet also connects to a very small auxilliary oil radiator. Without > this radiator the water-oil delta T was 10C=2C and with the extra radiato r > I got my desired delta T of 5C. It is not really needed if you are > satisfied with the standard delta T. > On the top of the firewall you see a small servo=2C a similar model as th e > vertical trim servo. This servo connects via a rod to the cowl flap. The > cowl flap hinges close to the radiator so even when it is fully open the > angle is very low. A simple but very efficent mechanism! > > The front exhaust elbows are wrapped to save the cowling which is very > close. > > If there is enough interest in this subject=2C I'm willing to write an > article about it. There is a lot of testing=2C reading=2C thinking=2C and > learning from failures behind this design. > Although I have been flying a year with it now=2C I have only recently > been able to test it in very hot and demanding conditions during our > just finished round trip in Corsica=2C Italy and Croatia and overflying > the Alps twice. > > More about that trip later. > > Frans >




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