Endless Sphere

the 26" front wheel was too big so i went 24". this dropped the axle height so i needed a longer fork to maintain the same geometry. good thing i got a marzocchi dropoff triple, lying around

qs1202kwb.jpg i'm planning to get the 2000w version (qs 120). i have a Kelly KLS7230 lying around... now i'm wondering if it would be better to get the Votol also just wanna confirm if Kelly KLS is compatible w/ these motors. i'm not really interested in getting ultimate optimization. i just wanna ...

hi QS, please verify that the UNLOADED RPM WITHOUT FLUX-WEAKENING is indeed 2800 RPM

of course i'm going to overclock the 96v motor by feeding in more amps

hpm3000b is 3kw, 6kw max

but the higher resistance of the 96v winding will produce more heat, right?

Ce-Approved-3kw-Brushless-Electrical-BLDC-Motor-for-Electric-Car-Electric-Motorcycle-Electric-Boat-Electric-Go-Carts.jpg any downsides? i need a low-kv motor so i can get away w/ using a 1-stage reduction w/o the sprockets getting ridiculously big. the latter detail being important when riding in m...

hi trazor i think i need a bigger motor now. easily hits 100C when bogged down. cruising at around 75c. what do you think of the HPM3000B. it's narrow enough to retrofit into my frame & swingarm Ce-Approved-3kw-Brushless-Electrical-BLDC-Motor-for-Electric-Car-Electric-Motorcycle-Electric-Boat-Electr...

we call them alka-leaks

use aaa nimh or ultimate lithium (pricey)

or lifepo4 and a dummy cell for 2xAAA applications

well even aluminum dual-crown forks eventually fail due to metal fatigue. usually at the stanchion just below the lower crown. so i opted for this rockshox domain w/ steel stanchions

new custom crankset w/ short 152mm arms. i'm getting pedal strikes w/ the "normal" 175mm arms. also added a 48t chainring because 152mm cranks NEVER come w/ 48t

short arms ideal for ghost pedaling

IMG_20191102_111009 (Medium).jpg jszh vs ga vs 26f.png the higher amp controller needs better cells. i'm taking a gamble w/ these cheap (PHP95 or USD1.86 per piece, landed) chinese cells made by JSZH (jiangsu zhihang new energy). i've cycled a cell and got 97.8% after 152 cycles :shock: that's pret...

IMG_20191101_173656 (Medium).jpg yyk overdrive.jpg so there it is ziptied to the bottom of the saddle. the "overspeed" mode gave me back all the lost speed when i moved to 11t motor sprocket (from 13t). so i got a very nice increase in thrust due to the gearing change, further boosted by the increa...

Well done with keeping the bolt and key/keyway. I hadn't had any issue with the quick-lazy of welding it, till I also tried quick-lazy with removing it lol. Turns out my bht is just fine, But will have to see about fixing or another >84v >18fet controller Will you upload a vid of yours in action wh...

IMG_20191021_113127 (Medium).jpg IMG_20191021_095044.jpg so here's my smaller 11t. basically i bored a hole through a standard motorcycle #420 sprocket then welded a shaft through it. keyway cut w/ a hacksaw :lol: will ride it later, expecting a bit more thrust w/ less top speed yeah that front bea...

added kickstand and rear cargo rack

so here's the BHT after being dunked in water multiple times i really need to seal it up. but the windings seems fine, they could probably take 80A

just ordered a yuyangking YKZ7280JA. 80A square-wave controller. let's hope i don't fry the motor to help avoid that i'll be installing a smaller 11T motor sprocket (currently 13t, 53t rear)

it certainly looks powerful, hows it go on those flats this is where the hub motors shine! those are the volcanic sands coughed up by Mt. Pinatubo in the early 90's (which cooled the earth by about a degree). this hub does well on pavement and hardpack. but terrible off-road :lol: so it's never goi...

Looks cool with the battery showing thru the side panel, be careful of a short! would hate to try to pull that battery out in flames! I always think of that when there are 10x screws locking it in place inside the frame. I'm sure its a ton of fun with that controller, but make sure you have enough ...

Ouch! I would have taken a ride to the hardware store :) hats off to you haha but i did! they didn't have the exact size. it's a good opportunity to use the tap & die set anyway, these dies (dice?) get rarely used. finally got it running! the KLS7230 is too big (obviously) for this build :lol: both...

stainless is a bitch to tap

pwd wrote: ↑

Sep 12 2019 2:54pm

That is a beautiful looking battery pack. What is the max current you plan on drawing from it?

thanks. 40A max

so a few months back i went ahead and got a 20lb tank of co2 and regulator. didn't cost much. in retrospect MIG is actually "cheaper" than flux-core since good fluxcore wire is expensive and not copper coated so it rusts, you can't keep it for a long time :evil: just as the OP said MIG does have a "...

w/ garage built frames the limiting factor is fabbing complexity as trazor has mentioned. it's easy to design in CAD but the difficult part is actually building the damn thing. so the design goal is "good enough" rather than "best" hence no suspension linkages and such. these frames are tough to bui...