Endless Sphere

this is actually my first time to notch so i'm surprised that it worked as well as it did :lol: maybe you just have to compensate for the thickness of the pipe. the template generated is really for a theoretical zero-thickness pipe. https://i.imgur.com/IVHKf7j.jpg "footpegs". cheap VP Components ped...

i'm now getting half-decent results w/ flux-core wire but i wanna try MIG. is it that much better?

specifically i'm getting tired of the cleanup needed w/ flux-core. and the smoke

very nice fab skills! is that MIG welding?

btw i'm just a bit concerned about the strength of the swingarm since you cut holes in it (red arrow). this weakens the rectangular tube. maybe you could weld a circular "cap" over the hole to strengthen it

Great progress! I'm curious about which method you use to bend tubes. And the tube notching is perfect how you did it? there's a machine shop very close to my house about 1 block away. i just print an actual size template of the bends and he does them on the steel pipe using a manual pipe bender w/...

mid-drives EAT drivetrains. over thousands of kilometers riding different mid-drives i've ruined many cassettes, chains, derailleurs, derailleur hangers, etc. so now i use only the cheapest 8spd components

3p shouldn't take long to balance. and if you built it well and if the cells are all from the same batch you don't even have to balance for like a year

.15mm nickel tabs spot welded to the A123. then 10ga stranded copper wire soldered on top. i guess the little spot welds create a bottleneck. but right now i can't think of a better way, without soldering directly onto the A123 That looks like what I was thinking originally. Obviously you were able...

check out my method. pre-fluxed btw:










i guess soldering is ok if done fast. but i don't do it anymore because spot welding is easier.

https://i.imgur.com/TyPSaZn.jpg 4s2p anr26650m1a. sufficient to jump my cars a honda fit and a ford ecosport, both 1.5L engines .15mm nickel tabs spot welded to the A123. then 10ga stranded copper wire soldered on top. i guess the little spot welds create a bottleneck. but right now i can't think o...

you don't really need to have the QR-type 20mm axle. the pinch bolts you have now were orginally small QR levers if i'm not mistaken. so you simply need a plain 20mm axle of the correct length (it'll still have a bolt at the end to press everything together). then the pinch bolts will clamp onto the...

if not glued it's possible for cells to chafe through (due to vibration) the very thin PVC sleeves and short.

for added protection i like putting a layer of kapton tape between opposing parallel groups, then bonding w/ silicone sealant

what kind of power are you running? 428 is rather heavy...

e.g. the sur-ron uses 420

i've done experiments here: https://endless-sphere.com/forums/viewtopic.php?t=83141 the GA's need to be discharged to 2.5v to get the most out of them. can your lipos go this low? if not then this isn't a good plan then what'll happen is the lipos will contribute more in the beginning. but as the li...

30qm. "m" means malaysia

should have a stamped code there. you need to peel off a bit to see it

"pre 2016". hmmm... those had controller issues, right?

many cheap flashlights rely on the internal resistance of AAA to limit the current to the LED

in case you wanna go li-ion... those are OG panasonic NCR. probably from unused laptop packs coz they're averaging 2800mah. Php100 per cell from a source just south of manila.

i have an old marzocchi drop-off dual-crown. primitive damper by today's standards. but i love the open-bath design. very simple, the same oil lubricates everything. it isn't leaking yet but i've purchased these seals just in case: https://www.aliexpress.com/item/Fork-OIL-SEAL-fit-MARZOCCHI-32-mm-FO...

i use 13s4p Sanyo GA w/ my BBS02. it lost 5% capacity in 14months of use. that's more than good enough for me

take note you're not going to be drawing 30A all the time w/ a BBS mid-drive on typical trail scenarios

http://cq.cx/tubejoin.pl

finally the holidays, i think i'll have some time to work on this

i've used trustfire 14500's for flashlights and they're ok. trustfire is a just wrapper. the base cell inside was probably made by by an OK chinese factory like DLG, BAK or whatever. or maybe not. but the ones i've used were ok