Search found 1542 matches

by Hummina Shadeeba
Dec 01 2019 2:35pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My econo-e-bike
Replies: 59
Views: 6888

Re: My econo-e-bike

any way to add a resistor or something to the twist throttle to dim the lcd screen and lower the current draw? The voltmeter is always on and uses 1.3v a day with even a 52v 625 watthour new Luna wolf battery. I worry I’m going to go away a long weekend and come back to a destroyed battery.
by Hummina Shadeeba
Nov 27 2019 4:09pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My econo-e-bike
Replies: 59
Views: 6888

Re: My econo-e-bike

I just ordered that throttle. Was it hard to connect? I’d be connecting it to the asi 800 esc
by Hummina Shadeeba
Nov 27 2019 3:28pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

Didn’t want to risk flattening the axle myself but he’s doing it on a mill I think so think will preserve the threads. Will cut 6mm on either side and a squeeze. The one side only had 6mm possible and compensating on the other side would add even more dish. 36spoke radial 451 wheels and purple tires...
by Hummina Shadeeba
Nov 27 2019 2:48pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

Why they don’t make the axles 9.95mm at least instead on 9.8 I don’t know and would make things more secure for everyone I think. As far as how much torque this will put out I forget what the esc is set to. 12 turn motor Getting axle’s flats lengthened and should be able to squeeze it in. Getting 4 ...
by Hummina Shadeeba
Nov 25 2019 8:35pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

wow so you think it would be fine without even tabbed washers, just the flats of the axle in the dropout. well it comes with the tabbed washers already and making me think can get away with just those. or weld on a bit longer tab onto an already made washer. but if this one guy who does machining ar...
by Hummina Shadeeba
Nov 25 2019 7:30pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

The dropouts are 7mm thick and has windows cut out and also there’s the threaded hole going horizontally. My pics are too big and takes me ages to convert its here: https://www.aliexpress.com/item/33033777448.html?spm=a2g0s.9042311.0.0.27424c4djAfbTN The tabbed washer is 3mm thick. I’d like to get t...
by Hummina Shadeeba
Nov 25 2019 12:07pm
Forum: E-Bike Technical
Topic: hub motor tabbed washer installation=inside of dropouts?
Replies: 9
Views: 1155

Re: hub motor tabbed washer installation=inside of dropouts?

Any good tabbed washers that can work adequately instead of adding a torque arm? I’m using a track bike with horizontal dropouts. MAybe even two per side (facing forward.). Or some that are a bit longer for more leverage? I see this variation but otherwise all seem the same https://www.leedsbikes.co...
by Hummina Shadeeba
Nov 25 2019 11:57am
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

Thanks again for all ur info. I’ll do 4 rivets Any other tabbed washers u could recommend that have longer tabs? The tabbed washers seem like they could be up to the job if longer and with more leverage. https://www.leedsbikes.com/product/doublewide-motor-axle-torque-washers-set-of-2aeleeds-electric...
by Hummina Shadeeba
Nov 24 2019 11:44pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

thanks for the info! i like the tabbed washers facing inside the dropouts and didnt know what they were about. got me looking for other longer tabbed washers. ARE THERE ANY OUT THERE? ive been looking to make 451 wheels and I wonder why you say they always do the smaller 406 with motors? I thought t...
by Hummina Shadeeba
Nov 24 2019 11:02am
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

Yea I know there’s longer reach brakes but one of many things. Schwinn 20” size rims being smaller I wonder if a problem for the hub and I’d rather get the slightly bigger rims instead. torn. The mini bike would be cool but the 26” is surely going to ride better Do I really need a torque arm if my d...
by Hummina Shadeeba
Nov 23 2019 2:29pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

http://www.bikecalc.com/wheel_size_math after finding the sram apex brakes don’t reach the wheel brake track and then realizing 20” wheel size means 1 of a possible 3, as u can see above, and the big wheel dish wanting an axle grinding besides a frame bending, and drilling and riveting, im discourag...
by Hummina Shadeeba
Nov 19 2019 10:36pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

Yes steel. Strangely think was Luna on the phone said carbon could be done a bit. Surprised. I’m going to rivet to mount the frame to mount the battery and that seems ideal but wondering how to attach as nicely w the esc and it’s threaded holes. Bolted to the frame somehow. https://lunacycle.com/asi...
by Hummina Shadeeba
Nov 19 2019 2:39pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

I’m gunna gamble with the riveted version. Looking around they seem pretty solid

Post pics when done
by Hummina Shadeeba
Nov 19 2019 11:44am
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

I’ll get somewhere to cold set it as apposed to messing with the axle thanks Widening the dropout: https://www.sheldonbrown.com/frame-spacing.html And use (hose)clamps for attaching the battery holder to the frame. I’d rather make it look slick though. Can’t run a new shiny bike with those things. I...
by Hummina Shadeeba
Nov 19 2019 2:17am
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

Ordered it! https://lunacycle.com/mac-motor-asi-high-performance-hub-kit/#trustspot-widget-wrapper And their cool wolf pack clear battery 52v, all to go on that little 20” bike If u have any advice on bending the 120mm frame to fit the 135 hub or if I’m better grinding the axle I’d like to hear Also...
by Hummina Shadeeba
Nov 15 2019 9:20pm
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

Re: singlespeed rear hub motor for 120mm spacing?

I think ill get a more powerful 135mm spaced motor and maybe grind the ends or squeeze it and thanks for helping me see that will work. can use a common single speed conversion kit then.



Liking this kit
https://lunacycle.com/mac-motor-asi-hig ... et-wrapper
by Hummina Shadeeba
Nov 15 2019 2:27am
Forum: E-Bike General Discussion
Topic: singlespeed rear hub motor for 120mm spacing?
Replies: 29
Views: 1339

singlespeed rear hub motor for 120mm spacing?

I want to put a rear hub motor in 120mm wide horizontal track dropouts. I also want to pedal a single gear with a freewheel. that's available right?
by Hummina Shadeeba
Nov 12 2019 7:28pm
Forum: Motor Technology
Topic: 50/100 kW PMSM Survey
Replies: 5
Views: 779

Re: 50/100 kW PMSM Survey

really zero cogging torque with magnets? how many teeth and magnets?
by Hummina Shadeeba
Nov 11 2019 4:26pm
Forum: Battery Technology
Topic: Max safe Voltage Difference when connecting two Batteries in parallel
Replies: 54
Views: 2129

Re: Max safe Voltage Difference when connecting two Batteries in parallel

It would greatly depend on the cell but in my experience throwing a 30q cell at 4v in parallel with a 3v cell I can’t say for sure if there was even a noticeable increase in temp. I forget the details on the cell resistances and subsequent flow of current but the charge current was way beyond the st...
by Hummina Shadeeba
Nov 08 2019 10:23pm
Forum: Food and Drink
Topic: Cured my wife's anxiety and my depression with nutritional supplements.
Replies: 18
Views: 631

Re: Cured my wife's anxiety and my depression with nutritional supplements.

I got on the anti-anxiety med Buspar when my heart was doing weird beats and scaring me. I just wanted to sleep constantly. I bet the amount of people who get on anti-stress meds and don’t read the pamphlet about the side effects and subsequently end up more stressed at their inability to have an or...
by Hummina Shadeeba
Nov 05 2019 1:06pm
Forum: Motor Technology
Topic: Looking for someone who can run motor design software
Replies: 4
Views: 545

Re: Looking for someone who can run motor design software

Can u do imbalanced windings with those programs? U can’t with motor analyst disappointed to find.
by Hummina Shadeeba
Nov 01 2019 1:47pm
Forum: E-Bike Technical
Topic: Low cogging torque / drag motor advice
Replies: 8
Views: 1493

Re: Low cogging torque / drag motor advice

Maybe the eflight with its very high kv means weak magnets and that’s why low cogging torque

I guess drone motors with their many poles are for less cogging so as to have better control? Is that it, is that necessary?
I don’t see the extremely low cogging torque 21n22p used anywhere.
by Hummina Shadeeba
Nov 01 2019 11:44am
Forum: E-Bike General Discussion
Topic: Hub motor industry dying?
Replies: 270
Views: 11378

Re: Hub motor industry dying?

What kit? I’m looking for a throttle I can twist the other way and get regen-brake
by Hummina Shadeeba
Nov 01 2019 9:56am
Forum: E-Bike General Discussion
Topic: Hub motor industry dying?
Replies: 270
Views: 11378

Re: Hub motor industry dying?

I’d like a throttle that’s it’s own thing not doing regen hooked up to possible mechanical brake as well. A simple throttle/regen brake
by Hummina Shadeeba
Nov 01 2019 9:39am
Forum: E-Bike General Discussion
Topic: Hub motor industry dying?
Replies: 270
Views: 11378

Re: Hub motor industry dying?

Funny how cogging seems so misunderstood. Maybe I’m wrong but I don’t think it’s related to iron losses as it is strong even at the slowest speed. it is a loss mainly in that when ur coasting with a motor unpowered the cogging will reduce how far you can roll. Bike motors have a lot of magnets and t...