Search found 1935 matches

by E-HP
Mar 02 2021 1:00pm
Forum: Help wanted & offered
Topic: Anyone offer Ebike consultation for $$?
Replies: 8
Views: 141

Re: Anyone offer Ebike consultation for $$?

Oh I guess I have a bad eye for judging hill gradient. There’s a hill going east on York Mills at Yonge that I thought was such a grade. I'm guessing around 6.5%, based on 100ft rise and 0.3 mile run. That's the same as the street I take from the bottom of the hill to my house. That would be more r...
by E-HP
Mar 01 2021 9:38pm
Forum: Help wanted & offered
Topic: Anyone offer Ebike consultation for $$?
Replies: 8
Views: 141

Re: Anyone offer Ebike consultation for $$?

Just trying to understand whats best to carry my 500lb bike and trailer set up better up 30% hills. i assumed 2WD and got a gmac 8t to install alongside my Crystalyte 1500 watt set up..but now am not so sure...and just want to find out good conclusions rather than assuming too much and potentially ...
by E-HP
Mar 01 2021 9:34pm
Forum: EBike Technical
Topic: Can MAC 8T take 2000W+?
Replies: 5
Views: 76

Re: Can MAC 8T take 2000W+?

Hi everyone, I have a MAC 8T hub motor paired with ASI BAC 800 controller and 52v battery w/ 40A BMS. It is currently set for 1500w max. Would it be safe to run this around 2000W or a little beyond? TIA. burst or continuous? it'll last a few minutes continuous. Burst for up to 5 mins. Looks like 3 ...
by E-HP
Mar 01 2021 9:16pm
Forum: EBike Technical
Topic: Can MAC 8T take 2000W+?
Replies: 5
Views: 76

Re: Can MAC 8T take 2000W+?

brucejun wrote:
Mar 01 2021 8:06pm
Hi everyone,

I have a MAC 8T hub motor paired with ASI BAC 800 controller and 52v battery w/ 40A BMS. It is currently set for 1500w max. Would it be safe to run this around 2000W or a little beyond? TIA.
burst or continuous? it'll last a few minutes continuous.
by E-HP
Mar 01 2021 8:27pm
Forum: EBike Troubleshooting
Topic: Sondors Ebike problem
Replies: 32
Views: 958

Re: Sondors Ebike problem

Can't tell what you've tried since you don't appear to be approaching this methodically. Maybe you did this, but plug everything back in, push the switch that usually turns on the bike, then check all of the throttle wire voltages to ground, using the pin/needle trick. Report back if you find a 5V s...
by E-HP
Feb 28 2021 1:32pm
Forum: EBike Troubleshooting
Topic: Battery won’t charge.
Replies: 4
Views: 104

Re: Battery won’t charge.

One day I plugged in the charger and nothing, it wouldn’t go into charge mode. I unplugged the charger and checked the fuse, it was blown, so I replaced it with the same exact type and amp rating. I plugged in the charger and the charger went into charge mode for about a second, but then it almost ...
by E-HP
Feb 28 2021 1:25pm
Forum: EBike Troubleshooting
Topic: Right settings for regenerative charge ?
Replies: 9
Views: 201

Re: Right settings for regenerative charge ?

It means that the BMS would not be limiting current during regen, so you have to protect the battery yourself by choosing a reasonable charging current, based on the cell specs and pack configuration.
by E-HP
Feb 27 2021 10:11pm
Forum: EBike Troubleshooting
Topic: Right settings for regenerative charge ?
Replies: 9
Views: 201

Re: Right settings for regenerative charge ?

Sparfuchs wrote:
Feb 27 2021 3:15pm
I also don't know if the BMS has separate ports so i'll just post a pic of it. Hopefully someone could tell me.
Discharge Temperature Range: -20 - 60°C
The battery from your link appears to have an XLR connector for charging, and separate Anderson connectors for discharging.
by E-HP
Feb 26 2021 7:33pm
Forum: EBike General Discussion
Topic: 5 way lights/ indicator/ horn switch help
Replies: 8
Views: 225

Re: 5 way lights/ indicator/ horn switch help

I'm guessing that the middle wire coming of the switch ( inside the unit) is the negative and the other two are the positive ones, one each for the left and right indicators. So if they are like the headlight one wire in and one wire out how do I connect them?? The turn signal switch can have eithe...
by E-HP
Feb 25 2021 4:10pm
Forum: EBike General Discussion
Topic: 5 way lights/ indicator/ horn switch help
Replies: 8
Views: 225

Re: 5 way lights/ indicator/ horn switch help

The one I have is wired like this:

2 X White wires = Horn (green button)

2 X Red wires = Head Light (red button)

1 X Yellow wire= Left Turn Signal

1 X Green wire = Right Turn Signal

1 X Brown wire= Ground wire for Turn Signal Lights
by E-HP
Feb 24 2021 11:48pm
Forum: EBike Build Threads
Topic: Can I and should I do this
Replies: 12
Views: 310

Re: Can I and should I do this

Are you sure the OP wants to keep the 26" on the front? Looked to me like OP wants to go 20" on both F/R: Ahh, that makes more sense. I think when I saw the part about changing out the fork to a smaller one, I got thrown off, since that would change the geometry. Cranks will need to be pr...
by E-HP
Feb 24 2021 12:54am
Forum: EBike Build Threads
Topic: Can I and should I do this
Replies: 12
Views: 310

Re: Can I and should I do this

I didn't ask if you plan on pedaling or not. If not, and are just going to occasionally turn the cranks, then I would go with a MXUS 3K hub, set up for a single speed freewheel. The pedal drop is more like 2", since the bottom bracket is located about 60/40 between front and rear axles. You cou...
by E-HP
Feb 23 2021 11:23pm
Forum: EBike Build Threads
Topic: Can I and should I do this
Replies: 12
Views: 310

Re: Can I and should I do this

Hi everyone. New here and need your help. I have an older (mid 1990s) Dean Titanium Bicycle that weighs about 12 lbs loaded. I’m thinking of making it an e bike. Questions: 1. It has 26” tires on it now but would like to put 20” on it. I am older and want to have my feet on the ground and also have...
by E-HP
Feb 23 2021 8:36pm
Forum: EBike Build Threads
Topic: New build help. Is this safe?
Replies: 28
Views: 884

Re: New build help. Is this safe?

webosplash wrote:
Feb 23 2021 5:23pm
do you think i can just limit the draw from my controller as i've already bought everything .
Yes, and probably a more reliable way of limiting current.
by E-HP
Feb 23 2021 8:31pm
Forum: EBike Non-hub Motor Drives
Topic: What happens when bike battery cables are wrongly connected? (using TSDZ2)
Replies: 24
Views: 672

Re: What happens when bike battery cables are wrongly connected? (using TSDZ2)

Hi guys, Everything is going well, but I'm having problems to extract the round module, one of the screws sits very hard and its head is damaged( see picture). So My question is: is it possible to extract the controller without removing the left-round part? say yes!! :oops: :?: So you already check...
by E-HP
Feb 22 2021 9:03pm
Forum: EBike General Discussion
Topic: RadPowerBike RadCity Commuter
Replies: 158
Views: 10324

Re: RadPowerBike RadCity Commuter

Bking wrote:
Feb 12 2021 11:13pm
The Radcity must have 60-65 psi to get any performance at all unless you weigh 100lbs.
That's too bad. I guess that supports the observation about the bike being underpowered, if it struggles to overcome rolling resistance. :shock:
by E-HP
Feb 21 2021 2:20pm
Forum: EBike Troubleshooting
Topic: Intermittent no power problem
Replies: 56
Views: 931

Re: Intermittent no power problem

rick_p wrote:
Feb 21 2021 2:04pm
Please look at the package and let me know if this is the correct resistor for the job.
Brown black gold is 1 ohm
Brown black orange is 10K ohms
by E-HP
Feb 21 2021 1:29pm
Forum: EBike General Discussion
Topic: Help with an e-bike for my courier job
Replies: 20
Views: 524

Re: Help with an e-bike for my courier job

Thank you for slapping me into reality. :) Jeez, I had no idea the battery cell requirements were so huge. I thought the approximate amount would be an order of magnitude lower. Okay. I'm adjusting my new speed target to 15-20 mph. I'm assuming that would lower voltage, like 36 maybe? You have the ...
by E-HP
Feb 21 2021 12:47pm
Forum: EBike General Discussion
Topic: Help with an e-bike for my courier job
Replies: 20
Views: 524

Re: Help with an e-bike for my courier job

Hi everyone, this is my very first post here. Great to be here! So I'm a bicycle courier. I typically pedal my road bike 8-12 hours a day. I'm looking to change that this year. I want to convert one of my two spare bicycles into an e-bike. I have a mountain bike and a cruiser bike to choose from, b...
by E-HP
Feb 21 2021 12:17pm
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 255

Re: Help with stray voltage

Are any of the components mounted to the frame? Maybe a picture would help.
by E-HP
Feb 21 2021 12:10pm
Forum: EBike Build Threads
Topic: New build help. Is this safe?
Replies: 28
Views: 884

Re: New build help. Is this safe?

I am asking, I have 200 35e cells so a 20s 10p would run at 80a as each cell is rated 8a each continuous but the max output on the datasheet says max 13a so do i get an 80 a bms for my cont. rating or my max......................? Goes back to your assumptions for your used cells, since only you r ...
by E-HP
Feb 20 2021 12:48pm
Forum: EBike General Discussion
Topic: Newbie rear hub drive Q's- how not to fry my motor
Replies: 14
Views: 363

Re: Newbie rear hub drive Q's- how not to fry my motor

Wow, I'm glad I asked. I guess I'm going to be doing some climbing with the motor shut off. The hill I am concerned with turns out to be a mile long at 5% grade, with the steepest section being 9% for 0.5 mile. The donor bike I'm using has a 28tF 34tR low gear, so I might be able to keep it upright...
by E-HP
Feb 20 2021 10:36am
Forum: EBike Technical
Topic: 2kw 60v chines motor controller
Replies: 5
Views: 174

Re: 2kw 60v chines motor controller

i cant tell for sure if this is the original order i received only the controller and i am trying it with another engine the tested engine is ok on anoter controller the wires seem ok and wont show sign of over heat Try swapping two of the big phase wires (e.g. swap green with yellow), and see if t...
by E-HP
Feb 20 2021 10:15am
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 255

Re: Help with stray voltage

Try measuring resistance between the frame and battery negative. If you see a low reading, like ohms, you have a short. If the meter shows high, more than megohms, then it's good. Your meter is very sensitive and you can get stray readings like that just from moisture or stray resistance in the con...
by E-HP
Feb 19 2021 9:32pm
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 255

Re: Help with stray voltage

1. Are the BMS or contactor mounted to the frame? Maybe a floating ground vs chassis ground issue.
2. Why two threads/posts??