Recent content by qwerkus

Interesting reply: You went for the friction issue, while I had rather weight and overall number of components in mind. My point is: if you already have the component, you might use it for gearing as well. Keeping system complexity as low as possible seems always a smart move. BTW $30 is also...

If the mid drive is intented for the maxarya, an IGH would habe been redundant, since that bike requires a rear chain tensioner anyway. The true benefits of IGHs only makes sense if you have horizontal or sliding dropouts in my opinion, since a chain tensioner is basically a derailleur...

This one's easy. You can find them in the dealer's manuals. Here a link to a dealer that listed some of the most common hubs. Though the values are way too conservative in my opinion, so it won't help you much. I'd put my two favorite shimanos the nexus 3 and the alfine 8 at 120 n.m-2 and 80...

What data do you need ? I have plenty of shimano docs laying around...

So it's the same study. Too bad Oehler did not include the best shimano ( 3 speed and alfine 8) and older sachs/sram hubs.

Where did you get that from ? Here in Europe, there is a german study widely spread around. While it's true that under ideal conditions a new clean derailleur will beat any IGH, those conditions are very rarely met, so that in most everyday scenarios, efficiency between a good IGH and a...

Chain wear depends little on quality and a lot on maintenance/use: a long chain rolling over large sprockets will distribute forces better and hence resist to wearing/elongation longer than a short chain on small cogs. But this becomes irrelevant is the chain is constantly full of dirt, as the...

I have some experience with IGHs. Only one able to take full power of 1kw mid drives are 3 speeds, though shimano and legacy sachs / srams are way better then SA since the takeover by sunrace. The newer shimano 5 speed has supposedly been developped with middrives in mind and comes with an...

Schwalbe advise to use lube all around the tire seat. Then slightly overpressure and the tire will jump right into the correct position. Only works with new tires and flanged rims.

Nice. Missing cyclone kits though, and a few others less known, like the yalu kit.

Usually bms allow for some sort balanced charging, which means they try to avoid the explosion of one series group while the others are barely charged. Do do that, the board needs to be connected to each cells groups, as shown on this simple pic of 3 cells in series. On a sidenote: it's usually...

This should probably go into the Ebike Build Threads subsection...

Interesting reply. I'm not sure how I would fit a belt sprocket on a bmx crank, but the trial crank thread could work. Do you know if the threading is the same as for one of those 6 bolts adapters ?

Good idea, but also not easy. Tandem chain usually go from crank to crank. Those using left side drive up front need freewheel adapters with much larger sprockets than mine. I guess machining is the only real option. Not that hard either: I just need a cheap crank with a sprocket pressed in that...

Can't see the vid.