I have had good experiences with  Rad. Is having the charger Being incompatible with the battery is rad behaving badly

Quote from: rutrowlb on January 11, 2022, 07:24:20 PM

Quote from: jbfoster on January 11, 2022, 06:28:44 PM

Quote from: rutrowlb on September 24, 2021, 05:14:57 PM
Finally found one that worked it has a real sine wave output. The peak converter spikes was causing me problems. I just ended up getting four different ones and none of them worked. The sine wave one worked. So I see others have bought some it didn't end up with my problem I think it's just a hit and miss deal. Just go to Amazon and search for a 12 volt inverter with sine wave output. Just so you know I'm an electrical engineer and I design dc-to-dc converter for the last 25 years. Didn't want to get technical just was looking for simple easy solutions. Without knowing the design of the rad charger a sine wave output is a safer solution also a good solution if you're charging expensive laptops

What is a real sine wave? from my understanding of inverters there is pure sine wave and modified sine wave. If you are going to run medical equipment and higher end electronics I would get a pure sine wave inverter. Modified sine wave would probably be ok to run tools like saws and drills. I'm no expert but that what I've read before purchasing my pure sine wave 300 watt inverter. I bought my inverter to run my laptop and RV battery charger. I've never tried charging my Rover 5.

Jim

Pier signwave inverter is a complicated subject. In general to run your computer you want to use a sign wave inverter. All inverters distort the sign wave to some degree. In general It is recommended that your inverter have no more than approximately 5% total harmonic distortion. Many non sign wave inverters inverters can range  Up to 45% total harmonic distortion. What the heck does this all mean. Picture an inverter that puts out a square wave. A square wave has very fast rise in fall times or a fast dv/dt.... what that  Means A square wave will create higher peak currents In the device you're driving. That can increase  The electronics failure rates and  Decrease reliability On your charging dongle. What  Happens To the charging dongle when it fails It's hard to say Without analyzing the failure modes and effects. All I know is the darn battery is expensive and don't want the charging system the break  Complicated battery management system electronics.

Any quality inverter Has the total harmonic distortion specified THD %

Quote from: jbfoster on January 11, 2022, 06:28:44 PM

Quote from: rutrowlb on September 24, 2021, 05:14:57 PM
Finally found one that worked it has a real sine wave output. The peak converter spikes was causing me problems. I just ended up getting four different ones and none of them worked. The sine wave one worked. So I see others have bought some it didn't end up with my problem I think it's just a hit and miss deal. Just go to Amazon and search for a 12 volt inverter with sine wave output. Just so you know I'm an electrical engineer and I design dc-to-dc converter for the last 25 years. Didn't want to get technical just was looking for simple easy solutions. Without knowing the design of the rad charger a sine wave output is a safer solution also a good solution if you're charging expensive laptops

What is a real sine wave? from my understanding of inverters there is pure sine wave and modified sine wave. If you are going to run medical equipment and higher end electronics I would get a pure sine wave inverter. Modified sine wave would probably be ok to run tools like saws and drills. I'm no expert but that what I've read before purchasing my pure sine wave 300 watt inverter. I bought my inverter to run my laptop and RV battery charger. I've never tried charging my Rover 5.

Jim

Pier signwave inverter is a complicated subject. In general to run your computer you want to use a sign wave inverter. All inverters distort the sign wave to some degree. In general It is recommended that your inverter have no more than approximately 5% total harmonic distortion. Many non sign wave inverters inverters can range  Up to 45% total harmonic distortion. What the heck does this all mean. Picture an inverter that puts out a square wave. A square wave has very fast rise in fall times or a fast dv/dt.... what that  Means A square wave will create higher peak currents In the device you're driving. That can increase  The electronics failure rates and  Decrease reliability On your charging dongle. What  Happens To the charging dongle when it fails It's hard to say Without analyzing the failure modes and effects. All I know is the darn battery is expensive and don't want the charging system the break  Complicated battery management system electronics.

Quote from: Veggyhed on October 19, 2021, 11:25:37 AM
I believe mine kicks in in about half a crank. Do you have drag from bad bearings and your wheels or maybe your brakes? Do your wheels spin freely? Is your crank sensor clean?

Sent from my Pixel 3a using Tapatalk

I have the same experience about half a crank in the power system pulls in

After going through this experience I am glad I tried to loosen the nuts at home. If  I needed to change a intertube in the field  Would not be able to do it I'd highly recommend anyone Do this at home 1st get it loose enough Before you're outriding and having a bad day with it

Finally found one that worked it has a real sine wave output. The peak converter spikes was causing me problems. I just ended up getting four different ones and none of them worked. The sine wave one worked. So I see others have bought some it didn't end up with my problem I think it's just a hit and miss deal. Just go to Amazon and search for a 12 volt inverter with sine wave output. Just so you know I'm an electrical engineer and I design dc-to-dc converter for the last 25 years. Didn't want to get technical just was looking for simple easy solutions. Without knowing the design of the rad charger a sine wave output is a safer solution also a good solution if you're charging expensive laptops

Quote from: DickB on September 22, 2021, 04:07:16 PM
Not sure what your problem is. I have a Cen-Tech 400W modified sine wave inverter that runs the Rad charger just fine. I got it for less than $30 at Harbor Freight a few years ago.

3 have not worked 150, 200 and 300w maybe 400w is the difference your 400w if it has a 12v std assec plug I will give it a try

Not provide a dissertation on y 12 volt adapter battery charging is useful. My first attempt was charging the battery using 150 watt inverter that one didn't work. Next attempt was using a 300 watt inverter that also failed. Suspect the sine wave Distortion in the output is too great to support the bat rad battery charger I have a 300 watt pure sine wave inverter on order and let you know how it works. By the way this can be useful for people that have simple RVs and want to charge their battery and are too lazy to rewire their camper for some other kind of inverter if somebody already found an inverter that works with a 12-volt adapter already let me know what you ordered

I need to replace one of my folding pedals but I don't see it on the rad site. Anyone else having this problem finding a folding replacement pedal. I need the pedals to fold so I can fit it where I need to

Quote from: WagsideHouse on August 31, 2021, 01:58:45 PM
Hi Everyone! I'm a new RadMini Step-Thru 2 owner & work commuter! I love it--- love love love. But my biggest fear whenever I ride is a flat tire, so I'd like to practice a repair before I'm actually in need of one. I've watched Rad's Change-a-Flat video, and a few others. I'm not handy at all, but I'm ready to try!

Unfortunately.... I can't loosen the Axle Nut on the rear tire! It's on TIGHT. The bike is only 2 weeks old, they must have used Hulk Hogan to tighten this thing at the factory. Eek.

My (probably silly) Question:  Can I use WD-40 to loosen the nut?

If I use WD-40, will I ever get the tire back on and tight, or because of the grease on the lug nut threads, will it be super wobbly? I don't want the tire to come off when I'm riding down one of the big hills I have to tackle to get to work. 

Or... is there a better way to loosen an Axle nut?

Thank you in advance for any help/advice!

Jen

Did you ever get it loose having same issue.  For those not in the know you can't use a 18mm socket on a tourge wrench. 

Since the rad Mini come stock with 22 in diameter tires the controller Best Choice is 21 in. I verified the odometer with my GPS. to correct your mileage multiply your display X 0.95

Quote from: pehayes on August 14, 2021, 09:21:15 AM
Just received a new RadMini 4 early August.  It came pre-set at 21.  There is no 22 option.  The actual OD of the inflated tire is close to 22.  The closest controller option is 21.  I've experimented to see if I could trick more speed.  Seems best at the default 21.  Used a GPS app for speed verification.  Seemed to peg out max speed the same regardless of my wheel choices.

Patrick Hayes
Fremont CA

Thanks for the info exactly what I was looking for I do have a question in the rad why they don't account for the real wheel size

Quote from: Tony on August 13, 2021, 04:28:06 PM
Well I don't use the standard controller anymore , but when I did Rad told me to set it to 22

If only my controller had a 22-inch option

Quote from: Tony on August 13, 2021, 10:00:49 AM
I also did this .  Rad said it should be 22 to account for tire size on a 20 inch wheel.

The controller has no 22 option 20, 21 then jumps to 24 on the radmini 4,  any ideas
Seems strange that rad recommendation can't be programed

I just took a tape measure to my wheel and it is 22 inches, so why can't it be programmed

I was changing the setup on my controller it messed up the wheel size. What is a standard rad Mini 4 shipped for the factory wheel size. I looked around and it listed a 22in will diameter. This option does not exist on the controller setup I have the standard 20 x 3 tires