Search found 299 matches

by speedyebikenoob
Nov 12 2020 1:50am
Forum: E-Bike General Discussion
Topic: swapping cassettes
Replies: 8
Views: 353

Re: swapping cassettes

A- Do you use your 12 tooth cog much? B- Would you/do you ride at slowish speeds where the bike feels over-geared? If you answered A, you are using 9th gear regularly, then I would suggest a bigger chainring. For the reasons brought up by others. You mention cruising in 6th so I don't think your to...
by speedyebikenoob
Nov 12 2020 1:38am
Forum: E-Bike General Discussion
Topic: swapping cassettes
Replies: 8
Views: 353

Re: swapping cassettes

11t cog is very small for a motor driven chain. You will gain top speed at the cost or reliability, or durability. It is at the other side of the drive that you should change the gearing. Agreed, I will very very rarely be using the 11t cog though. I have no reason to ride 45+ mph most of the time....
by speedyebikenoob
Nov 10 2020 12:04pm
Forum: E-Bike Non-hub Motor Drives
Topic: Chain catcher with more reach
Replies: 2
Views: 275

Chain catcher with more reach

Hi guys, I want to install a chain catcher on my middrive e bike. I tried using a dog fang chain catch but the problem is the little plastic catch wouldn't "reach" far enough to be effective. There was still a lot of gap between the crankset and the bike frame so the chain would slip right...
by speedyebikenoob
Nov 10 2020 11:53am
Forum: E-Bike General Discussion
Topic: swapping cassettes
Replies: 8
Views: 353

Re: swapping cassettes

11t cog is very small for a motor driven chain. You will gain top speed at the cost or reliability, or durability. It is at the other side of the drive that you should change the gearing. Agreed, I will very very rarely be using the 11t cog though. I have no reason to ride 45+ mph most of the time....
by speedyebikenoob
Oct 31 2020 9:09pm
Forum: E-Bike General Discussion
Topic: swapping cassettes
Replies: 8
Views: 353

swapping cassettes

Hi guys, my cassette is looking pretty worn after being abused by my middrive over the miles. My bike came with an 8 speed 12-32t Shimano CS HG 200 cassette, and I'm looking at the Shimano HG 31 8 speed 11-34t cassette to replace it because I think slightly better first gear acceleration and a sligh...
by speedyebikenoob
Oct 31 2020 9:02pm
Forum: E-Bike General Discussion
Topic: Two battery packs- One for torque, one for speed
Replies: 15
Views: 437

Re: Two battery packs- One for torque, one for speed

Thanks everyone for the insight, guess I need to learn more and do more research :)
by speedyebikenoob
Oct 30 2020 1:34pm
Forum: E-Bike General Discussion
Topic: Two battery packs- One for torque, one for speed
Replies: 15
Views: 437

Re: Two battery packs- One for torque, one for speed

I see, I looked at the simulator and seems like I've been misunderstanding how this stuff works. So a voltage increase not only increases speed and rpm, but torque as well?
by speedyebikenoob
Oct 29 2020 2:09pm
Forum: E-Bike General Discussion
Topic: Two battery packs- One for torque, one for speed
Replies: 15
Views: 437

Two battery packs- One for torque, one for speed

I had an idea but it sounds too good to be true. A motor rated for 2000 watts means in theory I could supply 40v and 50 amps or 100v and 20 amps without it overheating, right? So what if you had a 40v battery pack for lower speeds so you could take advantage of more low end torque but less speed and...
by speedyebikenoob
Oct 09 2020 11:05am
Forum: E-Bike Technical
Topic: Confusing electrical issues
Replies: 8
Views: 355

Re: Confusing electrical issues

Would connecting the ground of the throttle directly to the battery's ground potentially help? That would be a cleaner connection right? I've read with a Magic Pie wiring harness, sharing the ground between the throttle and light would cause throttle problems. A direct connection would eliminate th...
by speedyebikenoob
Oct 08 2020 12:08am
Forum: E-Bike Technical
Topic: Confusing electrical issues
Replies: 8
Views: 355

Re: Confusing electrical issues

Would connecting the ground of the throttle directly to the battery's ground potentially help? That would be a cleaner connection right?
by speedyebikenoob
Oct 07 2020 12:27am
Forum: E-Bike Technical
Topic: Confusing electrical issues
Replies: 8
Views: 355

Re: Confusing electrical issues

E-HP wrote:
Oct 05 2020 12:37pm
Is your switch turning on the converter, or switching the 12V output?
The switch is directly powering on the lights, it's not turning on the converter.
by speedyebikenoob
Oct 07 2020 12:25am
Forum: E-Bike Technical
Topic: Confusing electrical issues
Replies: 8
Views: 355

Re: Confusing electrical issues

goatman wrote:
Oct 05 2020 11:06am
is your headlight wire running alongside the throttle wire, if so seperate them and try again.

read this thread

viewtopic.php?f=3&t=106663
thanks, read through it. They are running together, extra insultation would help too right?
by speedyebikenoob
Oct 04 2020 12:48am
Forum: E-Bike Technical
Topic: Confusing electrical issues
Replies: 8
Views: 355

Confusing electrical issues

So I had some flaky throttle issues a few weeks ago. Basically, the throttle was intermittent. Sometimes I would twist the throttle and the bike would go, and other times it would do absolutely nothing. Then it would come back alive 30 seconds later and start acting up again after a minute. Then the...
by speedyebikenoob
Oct 04 2020 12:25am
Forum: E-Bike General Discussion
Topic: Can I wire my ignition switch to my 5v throttle line?
Replies: 13
Views: 380

Re: Can I wire my ignition switch to my 5v throttle line?

Thank you all for the suggestions, the key switch fits perfectly and seems to work fine. :)
by speedyebikenoob
Oct 03 2020 1:53pm
Forum: E-Bike General Discussion
Topic: Can I wire my ignition switch to my 5v throttle line?
Replies: 13
Views: 380

Re: Can I wire my ignition switch to my 5v throttle line?

Do you know what voltage that separate wire had flowing through it on your controllers? Mine does have a separate wire, but it runs the pack voltage through it, so 60v and my switch is only rated for 12v. Mine have always been at pack voltage...voltages as high as 128V fresh off the charger and the...
by speedyebikenoob
Oct 02 2020 10:04pm
Forum: E-Bike General Discussion
Topic: Can I wire my ignition switch to my 5v throttle line?
Replies: 13
Views: 380

Re: Can I wire my ignition switch to my 5v throttle line?

Are you sure you don't have a separate wire from the controller to turn it on? It's been 3yr or so, but all of the YYK controllers I ordered samples of had a separate wire to turn them on, a pack voltage wire. Check with them directly if unsure and have all your controller label info handy in case ...
by speedyebikenoob
Oct 02 2020 10:45am
Forum: E-Bike General Discussion
Topic: Can I wire my ignition switch to my 5v throttle line?
Replies: 13
Views: 380

Re: Can I wire my ignition switch to my 5v throttle line?

docw009 wrote:
Oct 01 2020 10:30pm
I think you're fine with that. Make sure you switch the +5, or the signal, and not ground. Most ebike controllers take off if the throttle ground is interrupted.
Thanks :)
by speedyebikenoob
Oct 02 2020 10:44am
Forum: E-Bike General Discussion
Topic: Can I wire my ignition switch to my 5v throttle line?
Replies: 13
Views: 380

Re: Can I wire my ignition switch to my 5v throttle line?

Switching the throttle is not turning off the controller. Doesn’t it have a switching circuit? I have never seen a controller without one. Most of the time it is on the accessory 5v circuit, but sometimes (rarely) it has full battery voltage. Yet there is no significant amperage on the switching ci...
by speedyebikenoob
Sep 30 2020 2:43pm
Forum: E-Bike General Discussion
Topic: Can I wire my ignition switch to my 5v throttle line?
Replies: 13
Views: 380

Can I wire my ignition switch to my 5v throttle line?

My key ignition switch is only rated for 12v, so I can't connect it to the motor controller 60v signal line. Am I going to have any issues with just wiring it into the 5v throttle line to switch it on or off, or should it be okay?
by speedyebikenoob
Sep 28 2020 10:22pm
Forum: E-Bike Technical
Topic: Yuyangking anti theft wiring
Replies: 1
Views: 129

Re: Yuyangking anti theft wiring

also update I used a multimeter and figured out the black and red wires are infact connected to the battery so they are live. What's the purpose of them though? Am I supposed to use it to power the anti theft system or something?
by speedyebikenoob
Sep 28 2020 12:23am
Forum: E-Bike Technical
Topic: Yuyangking anti theft wiring
Replies: 1
Views: 129

Yuyangking anti theft wiring

I recently bought a yuyangking controller and it supposedly has an anti theft system? I identified the wires but I'm having trouble wiring it all up; I have no idea how it works. Here's a user manual I found for the controller: http://www.siaecosys.com/upfile/201909/2019090458677505.pdf Page 29 out ...
by speedyebikenoob
Sep 24 2020 12:48pm
Forum: E-Bike Technical
Topic: Do cooler motors run quicker?
Replies: 16
Views: 663

Re: Do cooler motors run quicker?

Cooling the motor just sheds the heat you are making quicker, it does not in and of itself make it "better". However, a hot motor does run less efficiently, so preventing extreme heat build-up is a good thing. If the heat build-up is not extreme, then no real need for extra cooling. What ...
by speedyebikenoob
Sep 24 2020 12:44pm
Forum: E-Bike Technical
Topic: Do cooler motors run quicker?
Replies: 16
Views: 663

Re: Do cooler motors run quicker?

So if I were to run a 1500 watt continuously rated motor at 3000 watts instead but figured out a way to cool it down significantly, it would still be much more inefficient than if I was running only 1500 watts through it?
by speedyebikenoob
Sep 22 2020 11:32am
Forum: E-Bike Technical
Topic: Do cooler motors run quicker?
Replies: 16
Views: 663

Re: Do cooler motors run quicker?

If the efficiency of an e bike motor at 2500 watts is 85 percent for example, that means 15 percent of the power is going to heat and being wasted right? If you cooled the motor somehow, wouldn't the efficiency increase so more power would be used for making the bike go instead of being wasted into...