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Comparison of 5 entry-level tool kits (lemmy.ml)
submitted 4 years ago* (last edited 4 years ago) by [email protected] to c/[email protected]
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tool Lumintrail TL810E $60 CyclingDeal SC-168A $55 Bike Hand YC-737 $50 Venzo VZ-F33-075 $40 Luna $39
bottom bracket & headset lock ring tool n y n n n
bottom bracket cup tool (adjustable) n y n n n
bottom bracket tool (cartridge) y (Shimano + ISIS) y (Shimano) y y (Shimano + ISIS) y
chain rivet extractor & assembler (adjustable, Shimano compatible) y (HG/UG) y y y (6-10 speed & 410,408 chains) y
chainring bolt tool n n n n y
crank puller y (cotterless, Shimano+ISIS) y (cotterless, fits all axles) y (cotterless) y (square taper, Shimano splined Octalink & ISIS) y
freewheel (aka lockring) remover (Shimano compatible) y y y y y
freewheel turner (aka chain whip) y (5-12 speed) y y y (1/8" fixed gear sprocket) y (3/32')
hex wrench (2/3/4/5/6mm) y (+2.5) y (+2.5, 4/5/6mm ball-ended) y (folding) y (+2.5) y (ball-ended)
hex wrench (8mm, for crank arm removal, + 1/2" adaptor for socket tools) y y y y n
hex wrench (6mm, auxiliary square head) y n n n n
pedal wrench (aka spanner) y (15mm/16mm, 15mm/17mm) y n y (15mm) y (+14/15 socket end)
screwdriver (Phillips) y (+2 bits) y y n y
screwdriver (flat) y (+2 bits) n y n y
screwdriver (precision, for derailleur's adjustment) n y n n n
sockets (8/9/10mm) y n n n n
spoke adjuster (forged /-groove) y (10G-15G) y y (10G-15G) y (0.127"/0.130"/0.136", 3.2/3.3/3.5MM) y (3.2/3.3/3.5mm)
tensioning torques n n n n y (Shimano)
tire levers 3 3 3 3 2
tire pressure gauge y n n n n
tire repair kit y y y y y
torx wrenches (3 sizes) n n n n y
wrench (6" adjustable wrench) n y n n n
wrench (headset 30mm/32mm, 36mm/40mm y y (4-in-1) n n n
wrench (aka spanner, open, 8x10mm) y y y y n
wrenches (2 hub-cone 13x14x15x16mm) y y y n y
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(E-bikes) power tool batteries vs. e-bike batteries (cost per unit capacity compared) (lemmy.ml)
submitted 4 years ago* (last edited 4 years ago) by [email protected] to c/[email protected]
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Which batteries give the most juice for the money?

Power Tool Batteries

make/model tech V amphours watt hours warranty net cost price/Ah price/Wh
DSANKE (Black&Decker) Li-Ion 18v 5 Ah $29 $5.8 $0.32
generic (Ryobi) Li-Ion 18v 6 Ah $33 $5.5 $0.31
Powerextra (Porter Cable) Li-Ion 20v 5 Ah ea. 1yr $63/2 $6.3 $0.35
TenHutt (Ryobi) Li-Ion 18v 9 Ah $64 $7.11 $0.40
Swidan (Greenworks) Li-Ion 40v 5 Ah $66 $13.2 $0.37
Waitley (DeWalt) 20v 9 Ah $70 $7.78 $0.43
Lotive (Greenworks) Li-Ion 40v 6 Ah 30 days $69 $11.5 $0.32
Epowon (Greenworks) Li-Ion 40v 5 Ah 1yr $73 $14.6 $0.41
Waitley (DeWalt) 20v 6 Ah ea. $76/2 $6.33 $0.35
Ryobi Li-Ion 18v 28 Wh ea. 90day $78/2 ? $1.39
Waspt Li-Ion 40v 6 Ah $82 $13.67 $0.38
Elefly Li-Ion 40v 6 Ah 1yr $88 $14.67 $0.41
Porter Cable Ni-Mh 20v 4 Ah ea. $110/4 $6.88 $0.38
Powerworks Li-Ion 60v 5 Ah 270 Wh $140 $28 $0.52
Greenworks Li-Ion 40v 5 Ah 2yr $180 $36 $1
Greenworks Li-Ion 60v 5 Ah 2yr $200 $40 $0.77
eGo BA4200 Li-Ion 56V 7.5Ah 3yr $233 $31.07 $0.60

Batteries specialized for E-bikes

make/model/shape tech V amphours watt hours warranty net cost price/Ah price/Wh
greencycle bottle 24v 250w 10 Ah 23 days $95 $9.5 $0.40
HaiTu Bottle Li-Ion 36v 7 Ah $130 $18.57 $0.52
fastakeep Li-Ion 24v 8 Ah 30 days $150 $18.75 $0.78
dolphin Li-ion 36v 11 Ah 1 yr $153 $13.91 $0.39
green E-motion bottle 36v 8 Ah 23 days $154 $19.13 $0.53
Hailong Downtube Li-Ion 48v 12.5 Ah 1yr $195 (EU only; paypal only!) $15.6 $0.33
Sanyo Li-Ion 52v 8 Ah 1yr $209 $26.13 $0.50
generic Li-Ion 48v 10 Ah 1yr $214 $21.36 $0.46
Downtube Li-Ion 52v 10.4 Ah 30 days $226 $21.73 $0.42
ebike motor battery store 36v 10 Ah $227 $20.6 $0.57
green E-motion bottle 52v 10 Ah 23 days $227 $22.7 $0.44
Hailong dolphin shark Li-Ion 48v 10 Ah 1yr $227 $22.7 $0.47
fastakeep Li-Ion 52v 10 Ah 30 days $236 $23.6 $0.45
Dsaikl Li-Ion 52v 750w 10 Ah $239 $23.9 $0.46
Wallen Power Hailong Li-Ion 48v 10 Ah 1yr $243 $24.3 $0.51
01-Case Li-ion 48v 10 Ah $243 $24.3 $0.51
Risklight Li-Ion 52v 10 Ah >1yr "Guarantee"? $244 $24.4 $0.47
green E-motion bottle 52v 12 Ah 23 days $246 $20.5 $0.40
Luna Wolf Pup (Samsung 21700 40T cells) Li-Ion 52v 4 Ah 200 Wh $249 $0.75 $1.25
jsa kaka Li-Ion 52v 10.2 Ah 1yr $250 $24.51 $0.47
jsa kaka Li-Ion 52v 500w? 10 Ah 1yr $255 (s/h) $25.5 $0.49
ebird locking battery 48v 10 Ah $255 $25.5 $0.53
Hailong Li-Ion 52v 13 Ah 23 days $260 $20 $0.38
03-Case Li-ion 48v 10 Ah $262 $26.2 $0.55
unit pack power Hailong2 Li-Ion 48v 13 Ah 624 Wh 1yr $263 $20.23 $0.42
eco-bike bottle 36v 7 Ah 252 Wh 15a $275 $39.29 $1.09
Chamrider 52v 13 Ah 1yr $279 $21.46 $0.41
dolphin Li-Ion 52v 10.4 Ah 1yr $281 $27.02 $0.52
Hailong 3 Li-Ion 52v 13 Ah 1yr $281 $21.62 $0.42
Best Bikes 52v 13 Ah 676 Wh 1yr $284 $21.85 $0.42
bottle Li-ion 48v 750w 13 Ah 1yr $326 $25.08 $0.52
down tube non-lead 52v 13 Ah 1yr $336 $25.85 $0.50
Whale Li-Ion 52v 11.6 Ah 1yr $349 $30.09 $0.58
Samsung 52v 14 Ah 1yr $354 $25.29 $0.49
ebird bottle 48v 10 Ah $358 $35.8 $0.75
Jumbo Hailong Shark 52v 13 Ah 676 Wh 30a $400 $30.77 $0.59
Jumbo Shark 48v 14.3 Ah $544 $38.04 $0.79

Assumptions in the "price/Wh" calculations:

  • 20v batteries are really 18v
  • 40v batteries are really 36v
  • 52-60v batteries are really 52v

because marketers lie. Amphours may be lies too, likely rounded to whole numbers, but we can't do anything about that.

1
mid-drive motor kits are only for people taller than 5'9" (lemmy.ml)
submitted 4 years ago* (last edited 4 years ago) by [email protected] to c/[email protected]
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In the search for a mid-drive motor kit I've found that most distributors neglect to state the size of the crank arm. The few that do have chosen a size that's optimum for people 5'9" or taller.

The average US woman is 5'4", and the average Asian man is 5'7". These groups are being discriminated against in the market of DiY mid-drive motor kits.

It's a one-size fits ~20% of the population scenario, roughly, and only one size is offered. Some kits are standard enough that it's possible to buy a separate aftermarket crankset, but the specs are undocumented and this also entails spending $100+ more and then wasting the stock cranks after spending upwards of $500 on the kit. The industry needs to get its shit together.

model bottom bracket req. crank size optimum rider height notes
AFT n/a (straps to frame) n/a n/a shitty tor-hostile site
Bafang BBS02 68-73mm ? ?
Bafang BBSHD 68-73mm, 73-100mm, 120mm 175mm 5'11"
Bikee Bike ? ? ? uses Sony batteries (unethical!); app is iOS & Google Playstore only; shitty tor-hostile site
Binova Flow ? ? ? no useful info on website and their store blocks Tor. ~$2k
CYC x1-pro 3000w 68,73,83,100,120mm 170mm 5'9" same as GNG x1-pro? chain or gear drive; app is iOS & Google Playstore only
Cyclone 3000w 68-83mm, 95-120mm 170mm 5'9" $430
Ecospeed side-drive? ? ? for recumbants; ecospeed.com dead
Ego side-drive? ? ? CloudFlare site
L-faster 68mm (+100mm for 750w motor) ? ? 250w,350w,500w,750w,1300w; chain drive & integrated versions; integrated speed sensor; $345 for 750w
GNG 2016 Premium belt 68-73mm 170mm 5'9" CloudFlare site
GNG 2019 3000w Cyclone Premium 68-73mm, 83-120mm ? ? CloudFlare site
GNG 2019 450w Cyclone Premium 68-73mm, 83-120mm ? ? CloudFlare site
L-R two stage 68-100mm ? ? $745; broken contact page
Luna Deluxe Mini Cyclone 68-83mm ? ?
Pendix 68-73mm ? ? 250w; >$1k
Tongsheng TSDZ2 68-83mm, 68mm,100mm,120mm 170 5'9" crank arms have an absurd Q-factor and should be replaced anyway. They are compatible with Bafang & Shimano Steps FC-E6000
Xing ? ? ? shitty tor-hostile site
Xofo 68mm ? ? Bafang knock-off? broken mfr site

The product information available is lousy all around. If anyone finds data for any of the above question marks, please post and I'll update the table. These are the ideal crank specs (neglecting special circumstances like crouched over racing positions):

rider height optimal crank length (mm)
6'0" (1828mm) 177.5
5'11" (1803mm) 175
5'10" (1778mm) 172.5
5'9" (1753mm) 170
5'7" (1702mm) 165
5'5" (1651mm) 160

(source)