![Halmar Lakeman](/img/default-banner.jpg)
- Видео 33
- Просмотров 55 142
Halmar Lakeman
Добавлен 28 дек 2008
Bugwiper motor squeaking
One of my bug wiper motors is making this annoying and strange squeaking noise during retraction. It's a DC brushed motor, I already lubricated the bearings but that dit not change anything. Any suggestions how to fix this? Let me know!
Просмотров: 109
Видео
ASG29e engine start
Просмотров 1373 месяца назад
I thought it would be interesting to show how I start the engine on my ASG29e.
Amazing 0.2 m/s climb 😂
Просмотров 1,4 тыс.Год назад
Just a short flight approaching the end of the season. Found an outstanding climb to stay aloft just a little longer 😊
Gliding the wave Omarama 2023
Просмотров 371Год назад
Short video of my first flight in wave. Truly awesome views in Nieuw Zealand, Omarama and Mt. Cook.
Drying the wings of my glider
Просмотров 1,4 тыс.2 года назад
After this (wingsandwheels.com/blog/post/wing-blowers) article from Adam Wooley on blowing your wings dry I made a low powered variant of the suggested system. And then I might have over-engineered it. I used a small radial ventilator, some silicon tubing and 3d printed parts to connect it to the wings. The LAK17a wings have only small 5-6 mm venting holes in the tips so not much options for la...
LAK17a trying to outperform a Ventus 3t
Просмотров 1 тыс.2 года назад
Me in my LAK17a trying to outperform a Ventus 3t on "end of the day glide". I came close, loosing only 40 meters on the Ventus over a total of glide of about 25 km. Not bad, especially given my wing loading of 33 kg/m2 and the Ventus turbo is around 44 kg/m2.
LAK17a landing after 754km cross country flight
Просмотров 1462 года назад
After my first 750km flight the ground crew was kind enough to record my landing. Many thanks to them for getting up early and helping with rigging, towing and de-rigging. And for standing by for a long retrieve if I would end in a field far from home :). www.weglide.org/flight/201744
Zeearend boven de Veluwe
Просмотров 1482 года назад
Vandaag samen met een zeearend (waarschijnlijk, ik ben geen expert) in een thermiekbel boven de Veluwe. Heel gaaf :). Today I shared a thermal with a sea eagle (probably, I'm no expert). Very nice! :)
My first flight in the Alps - gliding from Gap
Просмотров 5173 года назад
This august I had the chance to fly in the French alps. Wat an experienced and stunning views. Thanks to Marc Smeets for getting me in touch with the pilot Ton Schoonbrood, and to Ton for taking me along! You can see the flight track and some pictures here: www.weglide.org/flight/100654
LAK-17A "overvliegen", landing close to trailers
Просмотров 5 тыс.3 года назад
This time a view from the outside. Landing my LAK-17A close to the trailer on quite a windy day.
LAK17A cross country long video
Просмотров 3663 года назад
The day after my previous video was a nice one. This time I dit not speed up time for you so here is about 2.5 hours of gliding. That off course was not the entire flight, but just about all the footage I made. I forgot to switch on the camera when I got low, I guess I had other things to do at that moment. I forgot to mention in de video that just at the time I got low a friend of my had to la...
LAK17A cross country flight
Просмотров 2253 года назад
This time a video of my cross country flight on 16-4-2021. I had other things to do in the evening so I planned to land at 15:00. And the forecast was looking good so I set a bit of a challenge in a 300km triangle task. The start was nice and early, and the first few climbs in the blue were promising. I set out on the direct routing initially in the blue, even though there were small cumulus to...
I did it again - Time-lapse installing LS4b NEO winglets
Просмотров 13 тыс.3 года назад
I did it again - Time-lapse installing LS4b NEO winglets
I cut off the tips of an LS-3 - Time-lapse installing LS-3 Winglets
Просмотров 6 тыс.4 года назад
I cut off the tips of an LS-3 - Time-lapse installing LS-3 Winglets
Gliding @ Estrella Sailport Arizona
Просмотров 2,1 тыс.15 лет назад
Gliding @ Estrella Sailport Arizona
Maybe there’s a bug in the system? Sorry. Couldn’t resist.
😂
To avoid the LX stall warnings, I tapped into the pitot probe in the nose. Great video man!
@@TheSoaringChannel Thanks! The thinking of the tail pitot was that it would be slightly more accurate, considering I have a HAWK installed could be relevant. And I am not a big fan of a switch to select one of the two, so I just deal with it. The warnings occurs mostly during retraction were you normally are at a higher altitude reducing some risk regarding stalls
@@HalmarLakeman if you have an engine failure: it's one less alert of impending stall. Mount it in the nose. It's more accurate, anyways. It's an easy switch. Do it and thank me later. I have HAWK also. The best data at low low speed will always be what's in front of the glider. I completely eliminated the TE probe. Nose pitot and nose static. That's it. It works wonders and is incredibly accurate. No more twitching false alarms from the TEK. I know that route is a bit extreme - but it totally works. Every single video on my channel is flying using that configuration. LX suggested it to me and it has been amazing. No switches. No nothing. No false data.
@@TheSoaringChannel Fair point, you will certainly gain a few views 😜, I look in to that. The previous owner claimed it was the tail probe that was performing better. I am slightly less impressed by the HAWK than I was on my previous glider (LAK17a), but blamed it on a new glider and also a more heavy glider. The LAK17a had the pitot in the nose so there you go. However I do not have a static source on the nose, only on the tail boom (and the fancy probe on vertical stabiliser)…
What does the custom piece of electronics, just to the right of the LX8000, do? Btw, love the long format.
It measures relative moisture content of the air. The LED’s indicate rate of change in moisture content. There is this theory that thermals are more moist than the surrounding air, and I was hoping to use this to identify thermals. On a few occasions I had the impression that the system worked, but only for very strong thermals and only after turning in to the thermal. Mostly indications are all over the place and after I think two seasons I removed the system as I dit not get reliable useful information. At the same time I installed a LX HAWK system and that is just what I needed to make better thermal selections.
@@HalmarLakeman cool! that sounds very interesting. I spoke to a German student last year, who did the same thing with the Discus 2c DLR. He used a 10Hz moisture sensor, using a "Dew point mirror" system. From what I read in his (German) thesis, the speed of the sensors appears to be very relevant.
@@RoelBaardman that sounds very plausible, I dit use the fastest sensor I could find in the regular hobby shops, which wasn’t very fast, en quite sensitive to light to make things extra interesting 🤨
@@HalmarLakeman Where on/in the aircraft did you measure the air moisture?
@@RoelBaardman in the air intake for the ventilation
Many thanks, you’ve just save me a few quid!
aside from the climb, why do i hear "Bomb has been planted"?
Thats not fast at all, thermals van rise at many m/s
You are right.Thermals are usually much stronger. Chalk it up to a little soaring sarcasm .
where does it show the vertical speed on the dash. ?
All three middle instruments seem to show climb rate
Hoe vind je de Lak17a vliegen ten opzichte van de Ls6-18, qua stabiliteit en harmonie?
Best een lastige vraag, en de LS6 is natuurlijk wel een heel lekker vliegtuig om te vliegen. LAK17 is wat lichter, kleiner vleugel oppervlak en voor mijn gevoel maakt dat, dat hij iets lichter stuurt, iets wendbaarder is. Dit merk je vooral als je water mee hebt. De LAK17 heeft maximaal 51kg/m2 waar de LS6 bij 45 al wel vol zit. Des ondanks kan ik aan het begin van de dag met een volle LAK17 beter uit de voeten als met een volle LS6. Voor mijn gevoel kan de LAK17 een hoger gewicht iets beter handelen. Samen vliegend merk je overigens dat zo aan het begin de LS6 wat beter klimt, om hem vervolgens stekend weer in te halen. Als de condities daarna beter worden is het voor de LS6 wel lastiger om bij te blijven. In het algemeen is mijn beleving dat de LS6 simpelweg te licht is (teveel vleugel oppervlak heeft) waardoor als het overland-vlieg-weer is je ook sowieso water moet tanken. Aan het eind van de dag uitgraven is overigens wel iets wat de LS6 met zijn lage vleugelbelasting als een van de beste doet. Kwa harmonie heb je bij beide kisten pakweg vol voeten nodig om een beetje vlot bochten te draaien. De LAK17 heeft alleen kleinere oppervlakken en dus ook kleinere roeren, en kost het allemaal net ietsjes minder kracht.
@@HalmarLakeman Bedankt voor je uitgebreide antwoord! Ik ken de Ls6 eigenlijk uitsluitend als 15 meter vliegtuig (ik heb een Ls6b gehad) en de harmonie is daar erg mooi. Ik wist niet dat hij met 18m meer voeten nodig heeft. Kan je de Lak17 loslaten tijdens het vliegen, als je bijvoorbeeld moet plassen?
@@RoelBaardman de LAK17 kun je zeker los laten. Nooit problemen gehad met die noodzakelijke andere activiteiten. Ik wou je even privé antwoorden, Heb daartoe een connectie verzoek op LinkedIn gestuurd ;)
Prachtig Halmar!
Is with this new wingtips with winglet, wing has still a span of 15 meters? The cutted parts looks smaller than new wingtips.
Jup, wingspan is still 15 meter
Very interesting. Do you measure the exit flow humidity? How hot does the air get?
I don’t measure the exit flow humidity, that would involve very long wires. There is no heating involved, so just ambient temperatures
Pretty neat system! What glider is this for? What is the concern with it being in the glider? Have you considered keeping a digital dehumidifier in the nose of the trailer? This was my plan until I found a hanger to keep it rigged.
There are indications that keeping your wings dry helps prevent wing profile deformations. I keep the trailer dry isch wit a dehumidifier, but that does not dry the wing internals. This is a LAK17A, and it keeps a few liters of water in the wing after flight unfortunately.
i think the ventus would have a fair advantage at 200km/h+
I think so too! :)
Nice ! What was the speed ?
Pretty slow, 110km/h or so
Awesome! Bang for the buck, the LAK kicks ass.
Wat een afstand Halmar! Van harte, knap gedaan!
Can i know what adhesive are you using to attach the winglet to wing ?
Wow!
What kind of job must one have to own a machine like that?
??
Contradicting to what people think gliding is actually a very affordable hobby. You can become member of your local gliding club for around 70 euros per month
13:49 waarom staat de zander uit....?
Omdat die defect is, als in, hij gaat om niet nader onderzochte redenen niet aan. Er is een tijd van klussen, en een tijd van vliegen 😉
Super omgeving!!
Leuk zeg, goeie herinneringen met Thomas en de DG-300 van Teuge. Mooie film
Cool. Dat is Venlo toch? Daar vlieg ik.
Correct! Afgelopen twee weken zomerkamp gehad met VC Teuge :)
Super alles ohne Schutzmaske. Die Freundin auf dem Boden bekommt den ganzen Schleifstaub ab. Weitermachen !!!!
In my club we have two LS4 one without winglets and one with the older "big" winglets. Most of the pilots concluded that the one without feels better especially in straight flight - there is less need for direction corrections, how do the NEO ones feel?
I only have one flight, but the regular LS4 pilots are happy. Directional control, I don’t know, but stall and low speed handling is definitely improved.
Man. I wish my winglets would pop off with a button or something. They touch the trailer top cover when it closes and it push the wing wheels into the vertical stabilizer and scuffs it.
Welke ralkleur hebben jullie voor de tips gebruikt? Erg mooie hi-vis kleur.
We hebben RAL 2004 gebruikt. Zit nu op een groot deel van de vloot :)
Halmar, hoe was de aansluiting van de winglets met de vleugel aan de buitenkant qua profiel ? Moest je daar nog veel aan corrigeren of alleen aan de binnenkant (in de vleugelwortel) ?
Winglets passen redelijk goed, aan de buitenkant alleen aan de onderkant wat plamuur nodig gehad, daar zit een soort afdruk van de mallen. Binnenkant heeft veel werk nodig om alles pas te maken. Als je zelf aan het klussen gaat met deze winglets kan ik je wel wat foto’s etc sturen.
@@HalmarLakeman ik heb je even via Facebook een verzoek gestuurd. Ik heb wel interesse in de foto's. Bedankt !
Ik vermoed dat het probleem is dat de lokale hoek van de luchtstroom varieert door de mate van downwash van de vleugel. Zodra de antenne dan niet parallel aan de luchtstroom staat, genereert deze lift en krijgen we dus een tip vortex. Het lijkt erop dat je draad deze vortex volgt. Ik denk als dezelfde antenne midden op de romp gemonteerd is, dit probleem niet optreedt (behalve bij flinke sideslip).
In het midden van de romp, met een verticale antenne zou je dit probleem niet idd niet hebben denk ik. Vergeet ook niet dat de invalshoek ban de romp (en dus antenne) verschilt met de snelheid.
@@HalmarLakeman Exact wat ik bedoel!
Quite a lanscape!
Leuk om te zien Halmar. Je had beter weer dan wij in het zuiden die dag volgens mij. Tijdens het versneld afspelen zou het chill zijn als je iets van muziek doet want nu luister je naar een hoge pieptoon. En het laatste deel van de final glide was leuk geweest als die normale snelheid was geweest. Gaaf dat je deze filmpjes maakt. Keep it up 👍🏽
Great flight! I like the flap indicator on the left side of the panel.
Professionals have Standards
Fantastic video, thank you! It looks so easy to install the winglets but in reality it seems to be a huge amount of work. How do you check the wingspan and the correct alignment (angle) of the winglets? For me this seems to be the most important part of the installation, where you can make big mistakes.
With an aluminium tube (square) taped to the nose of the wing you have a reference. Trust DG that they made the winglets correct and if you align the leading edge of the winglet whit the tube/wing your alignment is correct. Wingspan is just a long tape measure. I did a LS-3 winglet modification as well this winter. I think you have a LS3, check it out ;)
Awesome, very interesting! I'm working on a GoPro mount at the moment, so might have to copy your testing methodology :)
I am “lucky” with an inspection cover on the wing, so I had a nice hard point to mount the GoPro
Very cool, thanks for sharing!
Nice! Subbed!
Beautiful work sir. Is that your club's workshop? If so, you are very lucky to have such a great workspace.
insane work!! how many hours did it take you??
Quite a lot. Around 100 hours would be a good estimate.
Wederom mooi werk! Wat voor verschil merk je met vliegen?
Ik heb al erg lang geen ls4 gevlogen, dus kan er niet veel over zeggen. Zou ongeveer twee glijpunten moeten opleveren, en ik denk dat de lage snelheid/overtrek verbeterd is
How many hours did eventually take you to install the winglets?
Quite a lot. Around 100 hours would be a good estimate.
wow !
Are you licenced to do a work like this on a glider in your country or is EASA part66 AML perhaps not required? (Asking this, since in my country without AML I'd be strung up).
I do have an EASA part66 AML. A license is required, if you have some experience sometimes you could do such work onder supervision if there is a licensed engineer nearby..
@@HalmarLakeman Nice work shown there, both on the LS3 and the LS4 . Here the Authorities refuse to assign us "plastic licence" even though we have past experience. Regulation is regulation so a course is required and there is no deviation from that. And you can just imagine what such an attitude from the Authorities has led to ...
@@palmifranken7451 that is a shame. We had less problems converting, but I have done a plastic course some 15 years ago at SCT Terlet.
lekker!!
tasty, ja!
Incredible Halmar! Amazing skills you have.
What type of spraygun did you use?
Nothing special, something like this. About €20; www.nonpaints.com/nl/euro-gun-mini-verfspuit-met-bovenbeker-hvlp-spotrepair
Prachtig werk Halmar, hoe veel tijd zit daar wel niet in?
Ik ben bang dat die over de 100 uur heen is gegaan...
@@HalmarLakeman Jemig. Nou, het resultaat mag er zijn!
How much does it cost to add winglets to an LS4?
@@rickdeckard7470 About €4000 for the parts, and of course the work. Check with DG-flugzeugbau.
@@HalmarLakeman great .. thank you. I assume that includes the Form 1. I am looking for a LS3 or LS4 does anyone know of one for sell not listed on the web classifieds?
Did the added weight affect your roll rate?
We don’t know yet, we had some bad luck on other maintenance so we expect the first flight in one or two weeks. But I think the increased aileron responses are more dominant.
Flap indicator werkt goed zo te zien 😁
Zeker, maar in het echt knippert die niet, dat komt door de camera ;)
Nice flight... cockpit sounds really quiet....👌👌