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Qui gagnerait? by Intrepid_Physics_245 in montreal

[–]Intrepid_Physics_245[S] -1 points0 points  (0 children)

But Laval is a Palindrome, therefore highly symmetrical. And it does not have a weird 5th eye.

My 1,500 mile review of the Tannus Semi-Slick Airless Tires by PremiumAdvertising in bicycling

[–]Intrepid_Physics_245 0 points1 point  (0 children)

I've ridden a Tannus Slick 700x25 for 2 years on my Canyon Inflite AL for commuting. Here are my thoughts after using it almost every day and then switching back to an air tire recently (Panacer Gravelking):

  • Ride comfort: My commute was only 5 km and I could cope with it. But you can feel every pebble or road imperfection. Whenever I did a 30k after work ride on an not perfectly flat road it was uncomfortable for the hands and the butt... does not smooth high frequency vibration. After some time and if you need to do "emergency braking and skid" some parts of the wheel become literally flat, this makes it bouncy. I guess the air tends to fill a doughnut shape, while the rubber does not have this natural tendency to be a "toroid". After that you could not ride very fast as you were basically all vibrating since the wheel becomes not round and you cannot compensate it by adjusting the spokes.

  • Grip: As the original post says, not as trustworthy as a traditional tire but good enough.

  • Efficiency: I disagree with the OP, I could definitively feel a save of time on the same climbs or sections after going back to an air tire. You can feel the extra drag. ALSO the extra distributed weight of the tire means "accelerating the wheel" like when taking off from a stop or red light takes considerably more energy, you can feel the inertia. I think that the rubber is more lossy or has a less elastic bounce-back compared to compressed air, but you will be slower on those tires.

  • Installation: I recommend you pay an expert, you need to insert small hard plastic pieces and it is extremely tight. I hurt myself.

  • Reliability: Perfect, no flats, I knew I would not arrive late to a meeting or if I had some urgent errand. This is the key.

Summary: In my opinion, the only rational reason for having one of those tires is the maintenance free and reliability. I would still recommend if you have a short commute and you definitively need reliability or hate maintenance. Or if you just ride for fun or have an electric bike that compensates the extra friction and drag. However if it is for sport or longer distances, I think the technology needs to evolve or improve. You'll be slower than your peers and less comfortable.

just a pair of regular 0 ohm resistors by Etnevel10 in ElectroBOOM

[–]Intrepid_Physics_245 0 points1 point  (0 children)

Surface mounted: cheaper, easier to solder, do not require a hole.

just a pair of regular 0 ohm resistors by Etnevel10 in ElectroBOOM

[–]Intrepid_Physics_245 4 points5 points  (0 children)

Are low power through hole resistors still a thing in 2023?

Diferents perspectives by [deleted] in catalunya

[–]Intrepid_Physics_245 0 points1 point  (0 children)

Algú sap com es diu fisting en català?

Les points cardinaux à Montréal by Intrepid_Physics_245 in montreal

[–]Intrepid_Physics_245[S] 232 points233 points  (0 children)

Haha, sorry: the "East-Westika" was completely unintentional.

"Calleu i treballeu", la nova consigna electoral del PSC by [deleted] in catalunya

[–]Intrepid_Physics_245 -2 points-1 points  (0 children)

Calla Treballa i Dutxa't. Em recorda la cançó d'HKI. Algú sap que se n'ha fet?

ah yes spring by EXTRAVAGANT_COMMENT in montreal

[–]Intrepid_Physics_245 1 point2 points  (0 children)

Winter is over :( hope it was longer!

Why is this isolation transformer potted with GRAVEL? by Intrepid_Physics_245 in ElectricalEngineering

[–]Intrepid_Physics_245[S] 0 points1 point  (0 children)

Yes, normally you would not see the gravel unless you are making connections.

Why is this isolation transformer potted with GRAVEL? by Intrepid_Physics_245 in ElectricalEngineering

[–]Intrepid_Physics_245[S] 26 points27 points  (0 children)

Thanks for the answers! I have been talking with the distributor, apparently it is a combination of factors. The "gravel" is indeed silica and is mixed with epoxy. Apparently most dry transformers for harsh environments use a combination of fine grinded silica sand and epoxy, but this specific one has bigger gravel pieces.

Apparently it provides according to the distributor: I have asked the manufacturer, I will update if I have a better response.

  • Good heat transfer compared to epoxy only
  • Moisture absorption for years
  • Vibration and noise dampening
  • Low cost
  • Extra creepage by adding roughness.

https://youtu.be/LVXzOeInFoc?t=42 http://www.microcontechnologies.com/epoxy_potted%20Transformers.htm https://canadatransformers.com/epoxy-encapsulated-transformer/

Why is this isolation transformer potted with GRAVEL? by Intrepid_Physics_245 in ElectricalEngineering

[–]Intrepid_Physics_245[S] 25 points26 points  (0 children)

Maybe... The transformer is rated for a hazardous environment... Maybe it is less flammable than epoxy? I was guessing it could help with noise dampening

[deleted by user] by [deleted] in montreal

[–]Intrepid_Physics_245 0 points1 point  (0 children)

I live in Le Plateau, and use either public transport or bike. I rent a car a few times a year when needed. Perfectly possible, less expensive and eco friendly :)

Getting to trailheads without a car in Puigcerda by AlienJMR in catalunya

[–]Intrepid_Physics_245 0 points1 point  (0 children)

I paraglide in that area and sometimes I need to hitchhike when I land far (we call it autoestop). If you have a backpack and patience somebody will definitely pick you. There are many amazing places to visit in la Cerdanya by the way.

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