Nice progress! Keep following your fantastic project. Love to see it fly.

Tolles Ergebnis und tolles Bauteil. Ich sollte mir auch mehr Gedanken über die Auslegung machen

@andreschavarria1450

5 жыл бұрын

Danke! Manchmal lohnt es sich etwas genauer auszulegen. Manchmal kann es aber in Detailverliebtheit enden. Ich find's schwer die richtige Balance dazwischen zu finden. Der Hebel ist für die Steuerung eines Flugzeugs und daher lebensnotwendig. Da lohnt sich der Aufwand auf jedem Fall ;)

@carbonarne675

5 жыл бұрын

@@andreschavarria1450 wie habt ihr den Hebel gebaut? Ist nicht einfach. Platte ausgeschnitten dann die Ränder mit ud band dann die Bohrungen ?

@andreschavarria1450

5 жыл бұрын

@@carbonarne675 So ähnlich. Hier findest Du eine Zusammenfassung: hortenmicrolight.wordpress.com/2019/01/12/engineering-lever-arms/ Die nächsten werden in eine kleine Ureolform hergestellt, weil es weniger Aufwand insgesamt bedeutet.

@andreschavarria1450

5 жыл бұрын

@@carbonarne675 Bis auf eine beschädigte Sendung war alles soweit i.O. Die beschädigte Ware haben sie mir kostenfrei ersetzt. Ich mache meine Bestellungen über Stefan Kühn, der die deutsche Niederlassung leitet. Bestellst Du direkt in Tschechien oder über Stefan?

@carbonarne675

5 жыл бұрын

@@andreschavarria1450 ja auch über Stefan, tolle Arbeit von ihm!

How many layers of carbon fiber or the thickness of the carbon fiber? I saw in youbother video that you prevented the conductance between the metal and composite. How did u do that? Thanks for your videos they are very scientific and professional.

@andreschavarria1450

4 жыл бұрын

Thanks! The bellcarnkas are sandwiches with PVC cores. Outside they have one layer of 160 g/m² carbon with ±45° orientation to uptake shear. On the top and bottom there are 6×0.8 mm unidrectional carbon/graphite profiles, which uptake the bendig stresses. We shot a tutorial about making this kind of bellcranks. It will include how to prevent conductance between carbon and metal. I've not finished the editing job, but hope soon to be able to publish it. So just subscribe, and you'll get noticed when it's online ;-)

@FirstLast-tx3yj

4 жыл бұрын

@@andreschavarria1450 already did i also read your blog. I have always been impressed by people building and fabricating for cars, recently I realised making your own plane is just crazy. I dont know if I will ever trust my skills to do it.

Hello, What kind of design it that? Core foam and vacuum bag molding ?

@andreschavarria1450

5 жыл бұрын

Yes, more or less. It contains also some CNC machined carbon parts. See hortenmicrolight.wordpress.com/2019/01/12/engineering-lever-arms/ for motre details.

Do you test fatigue as well? Is it significant on CF?

@andreschavarria1450

2 жыл бұрын

Fatigue is less an issue in CF, because its behaviour is more brittle than metals. What can happen is that single fiber breaks accumulate in time, possibly leading to failure of the whole piece at some point. That's why it's better to use higher safety factors (for example two), than usually in metals. Also, this lever is for a control with relatvely low cycle counts, so that fatigue should in general be no issue. If you have a piece that is very dynamically loaded, it would be better to use higher safety factors, such as 4 or higher.

@NicksStuff

2 жыл бұрын

@@andreschavarria1450 Thanks!

2.4 Kn, how much weight forces is that? I'm google it and it say around 244.7 kg, just don't feel right because, is it really that strong? 2 layer of carbon fiber? What if i use a fiber glass core? Is it still gonna be strong? I want to make a rearset of motorcycle, but the cheapest option is fiberglass, carbon fiber is gonna be for cosmetic

@andreschavarria1450

4 жыл бұрын

It's more complicated than 2 layers of carbon. We published a video about making this thype of bellcranks, which you seem also to know (kzread.info/dash/bejne/a4d_zJulkcLZp7Q.html). Fiberglass would also be fine for the core. Certainly an option if you increase its thickness. If i were you, I would make a prototype and break test it with some weights or by standing on it.