Search found 1130 matches

by goatman
Aug 09 2020 8:40pm
Forum: E-Vehicles General Discussion
Topic: Delta trikes vs tadpole trikes
Replies: 15
Views: 228

Re: Delta trikes vs tadpole trikes

well, i guess ol' Simon has no Talent when it comes to riding a bike. built my son a delta trike, its garbage, you sit too high on most of those trikes. if you see Papas examples of delta trikes theyre long and low. i was out on my tadpole today towing my trailer and a bright orange flag out in farm...
by goatman
Aug 07 2020 10:55pm
Forum: Battery Technology
Topic: Battery cell...
Replies: 1
Views: 86

Re: Battery cell...

you need to say what youre plans are for amps and pack size
by goatman
Aug 07 2020 7:12pm
Forum: Battery Technology
Topic: ZKE-TECH Cell Cycler Question
Replies: 4
Views: 57

Re: ZKE-TECH Cell Cycler Question

the ebd-a20h i believe doesnt charge.
by goatman
Aug 07 2020 1:33pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 48
Views: 1359

Re: Please advise me on a homemade motorcycle

Going with (2) 21mm carbon polychain belts. In the guide you do all the math to figure how much torque the belt will see..then they say throw that number out the window and consider if it’ll be used in an abusive way such as on a motorcycle as apposed to on a conveyer belt and assume double the loa...
by goatman
Aug 06 2020 5:25pm
Forum: Battery Technology
Topic: 40T cycle test
Replies: 24
Views: 911

Re: 40T cycle test

p42a and mnke liked longer wait times than the 40T, instead of 5minutes and 2minutes they like 30min and 5min so im trying these settings to compare mah loss per cycle https://i.imgur.com/JvMLjLd.jpg battery has been sitting on the shelf for 30 days, voltage dropped by 0.07 volts, its last discharge...
by goatman
Aug 06 2020 4:07pm
Forum: General Discussion
Topic: Eternal outskirts of Moscow and beyond (LOTS of pics!)
Replies: 293
Views: 15538

Re: Eternal outskirts of Moscow and beyond (LOTS of pics!)

now this is about to get really good.

i know alot of members here frown on this but for those of us where solar is pretty useless for long range, its the only solution right now. i run my bob yak at 65km/h with 35lbs in it quite often
by goatman
Aug 06 2020 10:43am
Forum: Battery Technology
Topic: Waterproof battery cover- hialong etc
Replies: 1
Views: 123

Re: Waterproof battery cover- hialong etc

i like to waterproof the battery with plasti-dip then stick it in the case.

viewtopic.php?f=6&t=104027#p1526264
by goatman
Aug 04 2020 10:46pm
Forum: E-Bike General Discussion
Topic: Tyres for commuter bike ? Schwalbe Marathon + disaster
Replies: 24
Views: 397

Re: Tyres for commuter bike ? Schwalbe Marathon + disaster

i like maxxis holy roller, its an inverted knobby, i think its about twice as thick as a hookworm, which i like also but i hit gravel pathways sometimes and the holy roller has really good braking traction on the pavement
by goatman
Aug 04 2020 7:03pm
Forum: E-Bike General Discussion
Topic: Undersized Controller ??
Replies: 39
Views: 774

Re: Undersized Controller ??

are these the disc brake screws?

Image
by goatman
Aug 02 2020 1:42pm
Forum: E-Bike General Discussion
Topic: Undersized Controller ??
Replies: 39
Views: 774

Re: Undersized Controller ??

id try taking the chain off, noise goes away its probably freewheel/cassette
by goatman
Aug 01 2020 10:46pm
Forum: Battery Technology
Topic: Molicel P42a cycle test
Replies: 5
Views: 182

Re: Molicel P42a cycle test

for cycle 2 i tried to lower peak battery temp from 104f to 101f by changing 7.5 amp c/o to 3.55v from 3.39v, went too far but capacity improved discharge 3567mah, charge 3516mah https://i.imgur.com/tGzgLoP.png changed 7.5 amp c/o to 3.47v and the discharge is better balanced, peak temp was 100f a l...
by goatman
Aug 01 2020 9:35pm
Forum: E-Bike Technical
Topic: Hard Shutdown letting off throttle or applying brake
Replies: 13
Views: 165

Re: Hard Shutdown letting off throttle or applying brake

how did you build the battery? solder it?
by goatman
Aug 01 2020 4:43pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Echoppcycle
Replies: 12
Views: 471

Re: Echoppcycle

beer fridge?

maybe beer fridge on the bottom and the compressor could keep your fish and chips warm up top :thumb:
by goatman
Aug 01 2020 4:16pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Echoppcycle
Replies: 12
Views: 471

Re: Echoppcycle

giant stiletto

viewtopic.php?f=6&t=103833


this one just showed up on craigslist in Vancouver

https://vancouver.craigslist.org/van/bi ... 07210.html
by goatman
Aug 01 2020 4:10pm
Forum: Battery Technology
Topic: 40T, neodymium magnets, plasti dip cycle test
Replies: 107
Views: 2509

Re: 40T, neodymium magnets, plasti dip cycle test

i ran out of plasti-dip and started testing the molicel P42a battery with only the positive end plast-dipped, not the negative. while doing a 10amp discharge, temp hit 90f and connection went bad https://i.imgur.com/A1KbhQb.png put duct tape over the magnet and tried again but it didnt work, at 95f ...
by goatman
Aug 01 2020 3:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Echoppcycle
Replies: 12
Views: 471

Re: Echoppcycle

having the battery that high with that rake of fork makes slow turns kind of tippy. thats why i turned my "battery tank" into a
"tank bag" and mounted the batteries as low and more centered as i could.

over all length of my bike is 84 inches and it just fits into most newer elevators
by goatman
Aug 01 2020 12:47am
Forum: Battery Technology
Topic: Molicel P42a cycle test
Replies: 5
Views: 182

Re: Molicel P42a cycle test

magnets and copper slug tape https://i.imgur.com/ghC87uJ.jpg battery arrived at 3.527v, charged with 2amps 0.10 c/o https://i.imgur.com/M7VSeFp.png starting 4.2v to 2.5v capacity test at 0.8amp discharge 4.15v, 15mah https://i.imgur.com/ov4Eaz2.png 4.10v, 95mah https://i.imgur.com/5TZKxQI.png 4.05v,...
by goatman
Aug 01 2020 12:39am
Forum: Battery Technology
Topic: Molicel P42a cycle test
Replies: 5
Views: 182

Re: Molicel P42a cycle test

starting battery temperature 87f 2amp charge to 3.6v, battery temp was 79f at 3.6v, 460mah https://i.imgur.com/89VVgtr.png when 3.75 amp charge reached 4.2v battery temp was 88f, 2290mah https://i.imgur.com/cIjeYhe.png end of charge temp 78f, 3035mah https://i.imgur.com/2oEy7Z6.png cycle #1 combined...
by goatman
Aug 01 2020 12:39am
Forum: Battery Technology
Topic: Molicel P42a cycle test
Replies: 5
Views: 182

Re: Molicel P42a cycle test

setting each discharge amp cut off settings by battery temperature starting temp was 75f 10 amp cut off at 3.58 volts, battery temperature 94f, 1049mah https://i.imgur.com/KOQJful.png 7.5 amp cut off at 3.39 volts, battery temperature 101f, 1137mah https://i.imgur.com/tQ4NO0y.png 5 amp cut off at 3....
by goatman
Aug 01 2020 12:39am
Forum: Battery Technology
Topic: Molicel P42a cycle test
Replies: 5
Views: 182

Re: Molicel P42a cycle test

Image

discharge 3516mah, charge 3468mah

Image
by goatman
Aug 01 2020 12:38am
Forum: Battery Technology
Topic: Molicel P42a cycle test
Replies: 5
Views: 182

Molicel P42a cycle test

4.2v to 2.5v, 0.8amp discharge capacity test

Image


wider view

Image
by goatman
Jul 31 2020 2:33pm
Forum: Battery Technology
Topic: Affordable Cell Cycler?
Replies: 10
Views: 237

Re: Affordable Cell Cycler?

im using this one

https://www.amazon.com/gp/offer-listing ... dition=all

Thunderheart uses one also
by goatman
Jul 31 2020 12:28pm
Forum: Battery Technology
Topic: Need opinion : Designing a 7s14P in a small box 11*9
Replies: 11
Views: 640

Re: Need opinion : Designing a 7s14P in a small box 11*9

the other way.

two rows of 7 makes 1p

4p and 5p are connected in series with the spotwelded nickel strip and its just folded back over on itself

Image
by goatman
Jul 31 2020 12:13pm
Forum: E-Bike General Discussion
Topic: weird 26 inch rim 37-590
Replies: 8
Views: 159

Re: weird 26 inch rim 37-590

3 cross laced

Image

im loaning my Marin to a friend so im taking the 3540 and PR off and giving him the G310 to use

NO POWER for him! :D

i probably cant give that goofy rim and tire away
by goatman
Jul 31 2020 1:16am
Forum: E-Bike General Discussion
Topic: weird 26 inch rim 37-590
Replies: 8
Views: 159

Re: weird 26 inch rim 37-590

the french should stick to making snow mobiles, maple syrup and poutine looks like i have to relace to a normal 26 mtb rim went to grins spoke calculator i have a spare crystalyte 26 rim and with a 3 cross i need 248mm spokes for the g310 g310 with a 2 cross (the way its laced right now) in a 590mm ...