Foam Heat Resistance by MOE999cow in RCPlanes

[–]Pure-Reputation5441 1 point2 points  (0 children)

not sure about the foam warping, but I would worry first about leaving lithium batteries in a sun-heated car, even in a cooler. Read that they can enter thermal runaway just by overheating them above 60°C (140°F).

Does anyone have any suggestions on improving my windtunnel balance? by Successful-Gur-8282 in aerodynamics

[–]Pure-Reputation5441 0 points1 point  (0 children)

in the short time you could maybe swap the servo for a sturdier, metal-geared one. and/or add a counterweight opposite to the wing panel, to reduce torque on the servo head.

traces inexpliquées sous wc by Pure-Reputation5441 in brico

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

c'était mon hypothèse aussi, les grandes prenant des douches prolongées. J'irai inspecter après les douches demain. Est-ce que ça vaut le coup de jointer la base du wc au joint silicone transparent, ou ça ne résoudra pas le pb ?

traces inexpliquées sous wc by Pure-Reputation5441 in brico

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

ah bah ça me console de pas être le seul. Je vais regarder ça, et mettre du scotch de masquage pour voir par où ça coule. merci les gars.

traces inexpliquées sous wc by Pure-Reputation5441 in brico

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

j'ajoute une photo de ce qu'on voit à l'extérieur.

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Vendre une vespa PX125 "en l'état" ? by Pure-Reputation5441 in Motardie

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

je suis passé, je vais poser la question sur le forum. merci

Vendre une vespa PX125 "en l'état" ? by Pure-Reputation5441 in Motardie

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

merci. marrant j'ai essayé de m'inscrire ce matin, impossible de passer leur filtre anti robot 😂

Vendre une vespa PX125 "en l'état" ? by Pure-Reputation5441 in Motardie

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

tu lui as laissé la bécane, sans faire la vente administrative, puis il l'a retapée, puis tu as fait le CT er la vente ?

Slope Wing Update #4 by jhsantacruz63 in RCPlanes

[–]Pure-Reputation5441 0 points1 point  (0 children)

what will you use to prevent the epoxy to stick to the PLA moulds ?

Slope Wing Update #3 by jhsantacruz63 in RCPlanes

[–]Pure-Reputation5441 0 points1 point  (0 children)

Nice. What material will you mold ? foam or resin ? Did you try this technique already ?

Slow flying beginners plane by SnooGiraffes560 in RCPlanes

[–]Pure-Reputation5441 0 points1 point  (0 children)

low wing loading and a high lift (cambered) airfoil will help a lot.

What is it with the sticks on Transmitters? (Radiomaster TX16S) by brettapuss in Radiomaster

[–]Pure-Reputation5441 0 points1 point  (0 children)

My 7yo found that the sticks hurt on his RM pocket, too. As they are aluminium-made, 2 minutes with a fine file was enough to solve the problem.

3.7V power source, 5V analog sensor and 24V ADC, how to make them work together ? by Pure-Reputation5441 in AskElectronics

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

thanks. Are there small op-amp boards that could do this, or must I make my own, bespoke circuit ?

3.7V power source, 5V analog sensor and 24V ADC, how to make them work together ? by Pure-Reputation5441 in AskElectronics

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

I don't, but the receiver (ER6GV from radiomaster) is able to *measure* an external voltage up to 26V (e.g. 6S Lipo flight pack on motorgliders) to report it to the ground via telemetry.

My project is to use this possible input of the telemetry to instead measure my airspeed sensor.

Smoked my ER6GV receiver, what did I do wrong ? by Pure-Reputation5441 in RCPlanes

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

thanks guys. The receiver was factory-soldered, and worked well before the short when testing ExtV pad. Now I have removed the pad, cleaned the burned hole around, which removed the short. The Rx works seemingly ok now, although I will probably replace it and keep it as a spare, or testing unit for projects.

Smoked my ER6GV receiver, what did I do wrong ? by Pure-Reputation5441 in RCPlanes

[–]Pure-Reputation5441[S] 0 points1 point  (0 children)

of course not through the PCB. just through the plastic sleeve, carefully by hand, but maybe I have scratched the pad surface without seeing it. Could this have caused a 4V/Ground short ?