Endless Sphere

The reason air doesn't work as well in a rear shock is because the shaft has to be enlarged for air, which carries a larger sticktion penalty than a thin shaft on a coil spring shock. Sticktion reduces small bump and low (shaft) speed tracking. So air shocks just aren't as smooth as coil shocks. Ye...

I hate having to pump up my air fork every 2 weeks. Maybe that's just because it's a DNM, but I wouldn't get an air fork in the future. put some fox float fluid (the air chamber lube, not damper fluid) or mix some SuperLube teflon grease w/ some fork oil. this solved my air leakage issue (not DNM)

coil is great if you got the correct spring rate. if not then you may have to experiment w/ different springs. with air you simply change your pressure w/ a shock pump air has more stiction so less small bump sensitivity coil more robust, maintenance free except for the damper part. air shocks need ...

https://i.imgur.com/m2Af0c9.jpg ERW pipe is fine. on this bike i used 1.8mm wall because i was using fluxcore at that time. i got co2 MIG now i'm building another one w/ 1.4mm wall steel is the way to go w/ garage builds but if you're equipped then 6061. requires big quenching tank and heat treat t...

https://i.imgur.com/GCIPc8t.png enlarge the holes or drill/tap new ones on the red dots for M6 bolts. then bolt on a SOLID spacer "donut". then attach rotor disc to the donut using a different set of holes agree w/ serious_sam, using long M5 bolts is a dodgy solution. it's easy to visuali...

check w/ vector if the frame is still available

here's mine w/ 17s6p 18650 pack and controller all inside the box frame, to maintain that sleek look

20181025-1224495.jpg from vector website seems to be an off-the-shelf moto hub. ask them directly what it is. if you're getting the vortex frame you probably can't use surron/lmx hub w/ it btw the vortex is ugly AF. all straight tubes like they don't have a tube bender :lol: hubmotor in swingarm re...

IMG_20210116_152001 (Medium).jpg don't use a bicycle hub. get a surron or LMX rear hub. here i'm using a moto hub but i drilled and tapped it to accept bicycle rotor Do you know where I can find details about sur ron hubs? I prefer them over the lmx hubs because they're a third of the price. what d...

don't use a bicycle hub. get a surron or LMX rear hub. here i'm using a moto hub but i drilled and tapped it to accept bicycle rotor

IMG_20210109_173400 (Medium).jpg did a few changes since the last pic. went back to to a single-crown fork w/ 26" wheel. fatter rear tire to balance it out, 2.75 x 17 kelly controller KLS7212, heatsinked to the frame. solves the overheating issue. shall elaborate on this on a future post. Look...

IMG_20201130_091947.jpg i got a vector light 135mm swingarm. i think there's a wider version. swingarm looks thin but is triangulated, so is actually very strong. i picked a DD hub (QS 205 35h), a small geared hub might be too weak for this kind of build fitting nicely inside are a 17s6p 18650 pack...

yep happened to me while bench testing em100 with QS motor 120 70h, no load. good thing it's an IPM so no magnets flew. motor went crazy and wouldn't stop. had to cut power

you need to dial back the flux weakening settings to prevent this from happening

i power it w/ a ryobi 18v pack, the portability is a big plus

uses hakko tips. quick heating

sufficient to solder 12ga to an xt90, but not 10ga

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Cartridge bearings that display any roughness or noise at all have already failed. Your 6201 bearings still turn because they don't have nearly as many balls as your 6805 bearings, so not as many places to rust solid. If you contaminate 6904 bearings, they'll crap out too. It seems me to that you c...

http://www.ckit.co.za/secure/conveyor/troughed/bearings/bearings_skf.html The seize-resistant concept SKF reluctantly accepted the inevitable penetration of grit, dirt and other abrasive contaminants into the raceways and rolling elements and designed seize-resistant ball bearings. Its special inter...

If you've got contamination, that's your fundamental problem. Nothing to do with bearing size. well there's nothing that could be done to prevent water getting in. so if a bit larger bearing can extend MTBF somewhat then that's good enough for me btw i define failure as totally seized up :lol: i ju...

I think you may misunderstand the source of axial preload that wrecks bearings. It's almost always a mismatch of the distance across the bearing seats versus the width of the inner race spacer. If those dimensions are in agreement, you can tighten the axle as much as you please and it's fine. If th...

so my bearings went bad ... any thoughts? What do you mean "went bad" ? Did you disassemble to inspect ? What is the condition of the grease? Got photos ? If you have corrosion, try stainless bearings, and more regular cleaning. abbah uses 6805 bearings as well 6805 is common in HD/qualit...

MadRhino wrote: ↑

Dec 23 2020 2:58pm

Buy a pro DH hub, even a used one. My favorites are Sun Ringlé Bubba or Abbah, DT Swiss 440 or DTFR, and the likes...

abbah uses 6805 bearings as well

The bearings are plenty strong; you're just not giving them the conditions they need. It's important that radial groove cartridge bearings like these do not have an axial preload on them. Ideally you will know they don't because they have a miniscule amount of free side play. If you don't squeeze t...

IMG_20191206_140740 (1) (Medium).jpg so my bearings went bad again after just a few months! these are 6805-2rs. 25 x 37 x 7mm. the bearing balls are just too small for heavy-duty ebike applications so now i'm thinking of upgrading these hubs to bigger bearings. 6904 (20 x 37 x 9mm). same 37mm O.D. ...

sarcastic? why would you think that what's wrong w/ you

taiwan is awesome. they got gogoros etc. if i had a kymco to convert i'd definitely use molicels. my next build's gonna use moli p26a

taiwanese bike deserves taiwanese cells molicel

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