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you‘re making a general statement about best practices of working on bicycles based on a handful of parts of specific type and manufacture. while It’s generally true that larger fasteners correspond to more torque, it’s way more nuanced than that. of my two most recent bikes, one has 6mm head...

theoretically... You could do even better. the lightest mass produced disc brake bikes out there weigh a bit under 6kg. Scott addict RC, Canyon Ultimate CF Evo Disc 10.0 LTD, s-works aethos, all in the 5.8 to 5.95 kg range. it’s safe to say that if there was some easy way to go way under that...

that’s ok, you’re getting interesting data. i’m sure you can look back and see how long the climb took. would be interesting to know if you’re going a lot faster on the TQ!

if price was not a factor, and an LBS not a requirement, i think i'd go with the canyon today! very nice bike. the ability to put standard 2x electronic drivetrains on a mid-drive is a game changer - although the inability to use the correct crank arms for the group is a bummer. i'd have to use...

cool! @Yako i may have missed it (i'm not good at watching videos lol) but did you spend the same amount of TIME climbing on the x20 as the hpr40? that will be the biggest factor by far, because (assuming you’re pedaling with the same effort) the slower you go the higher the proportion of the...

as you might guess, i have that spreadsheet lol. looking back it was ±4lb apples to apples, there are a few things i've forgotten or don't have weights for like bottle cages, lights, bar tape, etc. the cost per gram ranges from less than a dollar a gram to $5 a gram, but the biggest difference...

there are lots of grams to be had. took +/- 5lb off my creo 1 :)

that’s what i get for stopping at “the last 25 years” lol!! gemini says canyon has 32, they probably weren’t even around in 2010?

you’d think so … but ……. (and certainly not to keep a bunch of cyclists dry 😂 ) it’s actually sorta a serious problem though. many cities are reluctant to invest too much or compromise other modes for cycling infrastructure because they can’t reduce capacity of other systems, since when it...

sure, but overhead power lines are skinny and high up and generally not in a line between the fire lane and the first 75’ of the building that’s on fire! there’s a reason they don’t put those things 10-15’ above the ground, which is where a roof would have to be to effective at in keeping a bike...

https://sicycle.wordpress.com/2016/02/07/the-top-25-most-stage-winning-bicycle-manufacturers-of-the-last-25-years/ tour stage wins by mfr!

fun idea. bike lanes are usually next to curbs/sidewalks tho, which means they’re in the area firefighters use for their trucks and ladders and so on. typically not allowed to have continuous obstructions there.

i’m positive that it’s output - or at least an estimate thereof. the math aligns very closely with predicted speed and power requirements going up steep hills slowly, which is really all about gravity and weight. the documentation on the system also specifically mentions a motor torque sensor -...

important distinction - 10 MPH, not 6. 6% grade. i don't know yet what it'll be at 6mph (which is more like a 10% grade, coincidentally) since i didn't get good battery values for that first test. one interesting thing about the mahle data is that the WH capacity doesn't seem to go up if the...

here's an example with efficiency. i am missing a little motor power data at the end due to user error (the chart is a little shorter in time than the math), but no reason to believe the relationship between speed and power would suddenly change. red line is motor power. blue line is speed...

yep, that’s a good method if the bike goes by itself! if you need to pedal also, then of course you need to know how much work the rider is doing. without a watt meter, i wonder how accurate the SOC estimates from these things are…

i was surprised to see (after you pointed both of them out to me) that bikecalculator seemed to diverge from gribble, but the real issue is just not knowing all the values they use for the drop downs. some of the CdA values are higher than i would have guessed but not unreasonable. my own...

you just keep pulling out numbers without easy reference. 40% is crazy for loss, EIA estimates five percent. https://www.eia.gov/tools/faqs/faq.php?id=105&t=3 got a better, authoritative source? even if it was 40%, the total number for every passenger car mile driven is not even half of the...

you need a real ID or passport DOD ID card or a handful of other rare types. basically a real ID or passport. don’t bring any weapons. you can’t check really large batteries in, they have to be with you and removable. liquids need to be in small containers. they’ll ask you to take off your...

right, the question is are these small hub motors geared internally in a way to be efficient at, say, 6mph - which is around 75 rpm here. i assume it’s internally at least 5:1 on a motor this small so the range we’re asking it to be efficient in is roughly 350 to 1,150 RPM.