Yescomusa.com 500 & 1000 watt 48v rear kit review

Get real world experience and user feedback on the electric bicycle products.
mcintyretj   100 W

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Posts: 124
Joined: Mar 30 2012 2:31am
Location: Seal Beach, California USA

Re: Yescomusa.com 500 & 1000 watt 48v rear kit review

Post by mcintyretj » May 27 2018 1:22pm

Thanks Chalo, the Sunrace seems to be working ok, but, I have a Shimano as back-up. It good to have bike experts on the form.

******************

Friday was my last day of school until August 6th. This year I drove 3 times (75 miles) and biked 181 times (9200 miles). It did not rain much so I had no excuse. Still have the same 3 year old, 1000w hub motor (24000 total miles) but with the new rim. The controller is 5 years old and closing in on 40,000 total miles. The throttle is also more than 3 years old.

This year I stayed upright and did not have a flat the entire last semester (4700 miles). However, since March, my right ankle seems to be slightly swollen. The doctor took an xray and said it looked like arthritis, so, I have not been peddling as hard as I would like too.

For my last ride this year, I did the same route as the following few years, about 35 miles. Here are some photos:

charging in classroom.jpg
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stop at the gym for a swim.jpg
stop at the gym for a swim.jpg (208.46 KiB) Viewed 837 times
start of trail 5-25-18.jpg
start of trail 5-25-18.jpg (222.61 KiB) Viewed 837 times
view from trail 1.jpg
view from trail 1.jpg (221.04 KiB) Viewed 837 times
view from trail 2.jpg
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stop at the water tower.jpg
stop at the water tower.jpg (198.18 KiB) Viewed 837 times
rose hills.jpg
rose hills.jpg (219.98 KiB) Viewed 837 times
san grabriel river bike trail by home.jpg
san grabriel river bike trail by home.jpg (256.76 KiB) Viewed 837 times



My odometer stopped working with about 2 weeks left of school. After playing with it for a day, It came back on but the miles had jumped from 33,200 miles to 37,200, so it is off by 4000 miles or so.
not correct miles reading.jpg
not correct miles reading.jpg (143.37 KiB) Viewed 837 times


The samsung 22p pack was taken out of rotation at about 26000 miles but could have easily made it another year. The new samsung 25r pack has been waterproofed and the bluetooth BMS seems to be working great. The cells are in balance and I like that it does not sag much. My longest ride with this pack has been 49 miles.

I have a few projects plan for this summer and will report back later.

miro13car   1 MW

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Posts: 1621
Joined: Mar 26 2007 1:30pm
Location: Calgary, Canada

Re: Yescomusa.com 500 & 1000 watt 48v rear kit review

Post by miro13car » May 28 2018 6:35am

the millage you write about 32000miles is for just one motor ?? ,
you wrote you bought new yescomusa for $230 right and
now I see on pics it is not same motor.
so finally this millage is for what electric drive ???

mcintyretj   100 W

100 W
Posts: 124
Joined: Mar 30 2012 2:31am
Location: Seal Beach, California USA

Re: Yescomusa.com 500 & 1000 watt 48v rear kit review

Post by mcintyretj » Nov 20 2018 10:21pm

Update 11/20/2018

miro13car, this is the original $230 1000w kit with lots of dirt. About 3.5 years of use and has 25,000+ miles on it. I have another kit with 2 years (16,000+ miles) on it as a back-up.

I have not been riding as much this year. I still have a swollen ankle and foot. Was seen by several specialists over the summer but never diagnosed, however, I was convinced to get surgery on a non related issue, so, I was grounded from riding (or lifting more than 10 pounds) in August. Started riding with the same 1000w bike in September, riding 2 or 3 days a week. I have worked 74 days and biked only 24 times which would be about 1200 miles by ebike and 2700 miles by car. Here is the bike a few weeks back. Still looks the same.

1000w bike in november 2018-570x427.jpg
1000w bike in november 2018-570x427.jpg (41.8 KiB) Viewed 607 times

Purchased 4 tanks of gas in August, about $230.00, One day I might sit down and figure out if I have saved any money. Here are just 2 tanks:

gas tank 1-475x356.jpg
gas tank 1-475x356.jpg (28.52 KiB) Viewed 607 times
gas tank 2-475x356.jpg
gas tank 2-475x356.jpg (20.43 KiB) Viewed 607 times

Got my first flat on my second week of riding.

screw in tire-475x356.jpg
screw in tire-475x356.jpg (39.78 KiB) Viewed 607 times
screw in hand-475x356.jpg
screw in hand-475x356.jpg (21.83 KiB) Viewed 607 times


In October, the Neptune lite, Bluetooth BMS on my battery, stopped connecting to my phone. After reading the instructions, I decided to add the on-off connector. My Samsung 25r pack is actually bolted shut and taped. Had to open it up to connect the on-off switch. This did the trick and the BMS is working fine. It is still in almost perfect balance and usually charged to 62 volts. This BMS is working great.

adding on-off to neptune lite 25r pack-474x556.jpg
adding on-off to neptune lite 25r pack-474x556.jpg (33.76 KiB) Viewed 607 times
bms on-off on battery-475x356.jpg
bms on-off on battery-475x356.jpg (27.28 KiB) Viewed 607 times



Also, last year I purchased a cheap $150.00 dollar ebay kit similar to this one.

similar ebay kit.jpg
similar ebay kit.jpg (84.88 KiB) Viewed 607 times
I used it with my yescom 1000w controller and it seemed to run warm. However, this summer, I connected the entire kit on a bike and it worked much better. It did not heat up and was almost silent. It is currently my favorite bike to ride. My ebike friend says it is probably an analog controller. Also, I did not need to spread the dropouts.
cheap ebay kit on bike.jpg
cheap ebay kit on bike.jpg (198.84 KiB) Viewed 607 times

mcintyretj   100 W

100 W
Posts: 124
Joined: Mar 30 2012 2:31am
Location: Seal Beach, California USA

Re: Yescomusa.com 500 & 1000 watt 48v rear kit review

Post by mcintyretj » May 25 2019 5:57pm

Yesterday was my last day of work until August 5th. This year I commuted by car a lot more. I worked 184 days but only commuted by bike (1000w) about 80 days, or 4000 miles. This is the 4th straight year using this 1000w hub motor which has over 28,000 miles on it. The controller is 6 years old and has close to 44, 000 miles. I have been following the same routine and route on the last day of school for about 6 years. Here are some pics. They look a lot like last years.


Final charge in class, same samsung 25r pack as last year (12p x 15s).Have about 9k on this pack in 1.5 years 340 cycles
final charge in class2.jpg
final charge in class2.jpg (84.55 KiB) Viewed 351 times
Still using the same charger set-upat work. Plugged it in in August, unplugged it yesterday and put away.
HGL-185-30A series 62.4v 2.jpg
HGL-185-30A series 62.4v 2.jpg (85.15 KiB) Viewed 351 times

Stopping for a swim again.
stopping for a swim at the gym2.jpg
stopping for a swim at the gym2.jpg (110.21 KiB) Viewed 351 times

Starting at the bike trail.
selfie at start of trail.jpg
selfie at start of trail.jpg (175.69 KiB) Viewed 351 times

Lots of growth, hard to ride and see when it rains this much during the winter/spring.
bike trail with tall grass2.jpg
bike trail with tall grass2.jpg (175.14 KiB) Viewed 351 times

Almost ran over this rattle snake. You see them a lot on a bike.
snake2.JPG
snake2.JPG (65.74 KiB) Viewed 351 times

Stop at the water tower
selfie at the water tower.jpg
selfie at the water tower.jpg (181.92 KiB) Viewed 351 times

Rose Hills view
stopping at rose hills2.jpg
stopping at rose hills2.jpg (122.34 KiB) Viewed 351 times


Last part of the San Gabriel River. I ride on the actual river when there are other bikes and I want to ride faster than 20 mph.
last stop san gabriel river2.jpg
last stop san gabriel river2.jpg (76.96 KiB) Viewed 351 times


This year I had to replace my front bag because the zipper broke. I got a slightly larger bag from amazon. I bolted a piece of screen frame to keep the bag from hitting the wires.
screen frame piece to keep bag off wires2.jpg
screen frame piece to keep bag off wires2.jpg (61.68 KiB) Viewed 351 times

After about 4 years my throttle broke (hit a big rock, hand slipped). Replaced it with a throttle with less wires but used the same connectors. Just spliced the ground.
throttle with broken speed sensor2.jpg
throttle with broken speed sensor2.jpg (39.99 KiB) Viewed 351 times
throttle with detached sensor and wires2.jpg
throttle with detached sensor and wires2.jpg (50.48 KiB) Viewed 351 times



I am thrilled with the Neptune lite battery monitor. It is still working. So far I have not had to balance any of the cell groups and can check each cell groups voltage easily.
neptune lite 15 bluetooth bm.jpg
neptune lite 15 bluetooth bm.jpg (62.04 KiB) Viewed 351 times
neptune lite cell view.jpg
neptune lite cell view.jpg (81.81 KiB) Viewed 351 times
I will report on the some of the batteries that I built earlier in this thread, later this summer, along with some new packs. Might start a commuter thread if I get motivated.
Last edited by mcintyretj on Jul 02 2019 12:30pm, edited 1 time in total.

mcintyretj   100 W

100 W
Posts: 124
Joined: Mar 30 2012 2:31am
Location: Seal Beach, California USA

Re: Yescomusa.com 500 & 1000 watt 48v rear kit review

Post by mcintyretj » Jun 15 2019 12:21am

Battery update:

The 15s x 8p LG MJ1 pack I made 3 years ago had to be retired due to the last 2 parallel groups having way less capacity then the rest of the pack. I was getting less than 15 miles before my controller would shut off the pack (sag to 42 volts). For safety reasons (fire), I have this battery in an ammo can at 58 volts for when my power gets shut off.

Last summer I ordered 200 more Samsung 25r batteries for just over $500.00 shipped to my home. My first week of summer vacation I finally had time to assembled a 15s 6p 25r pack to replace the retired MJ1 pack. I also purchased another Neptune lite BMS. I am not an expert at assembling packs, but I like to get separation by using 2 layers of electric tape at each end of the battery and hot glue at the contact points Here is the sequence:

samsung 25r battery out of box.jpg
samsung 25r battery out of box.jpg (40.22 KiB) Viewed 287 times
getting started with tape and hot glue.jpg
getting started with tape and hot glue.jpg (45.95 KiB) Viewed 287 times
parallel nickel strips spot welded.jpg
parallel nickel strips spot welded.jpg (64.83 KiB) Viewed 287 times
series and parallel strip with riba spot welder and 2x 3s lipos.jpg
series and parallel strip with riba spot welder and 2x 3s lipos.jpg (90.14 KiB) Viewed 287 times
left side of new battery.jpg
left side of new battery.jpg (79.07 KiB) Viewed 287 times
right side of new 25r 15s x 6p pack.jpg
right side of new 25r 15s x 6p pack.jpg (94.41 KiB) Viewed 287 times
top of battery with neptune lite bms.jpg
top of battery with neptune lite bms.jpg (72.21 KiB) Viewed 287 times
new 25r pack 15s x 6p next to lg mj1 pack 15s x 8p.jpg
new 25r pack 15s x 6p next to lg mj1 pack 15s x 8p.jpg (53.16 KiB) Viewed 287 times
I trimmed about 1.25 inches off the old MJ1 case, attached a hinge, added a 40 amp fuse, then bolted the case shut with the new battery inside. The bluetooth bms is a real time saver and it is easy to monitor temperature and balance.
The case and battery weigh in at 11 pounds (this is a 15ah pack on paper).

new 25r pack 15s x 6p total 15ah and 11 pounds in the case.jpg
new 25r pack 15s x 6p total 15ah and 11 pounds in the case.jpg (43.48 KiB) Viewed 287 times


I also assembled a back-up solenoid spot welder in case Riba's welder stops working. An ebike friend has asked to borrow the welder a few times. Here is a short video on how I assembled my welder:

https://www.youtube.com/watch?v=jPtiwKFbtBw





Wanted to do a range test with the new pack so I charged it to 62.5 volts, mounted on the 500w bike, and a little over 27 miles later I was down to 53 volts. Probably could have done 5 or 6 more miles. This was on flat ground and at 75 degrees F. Here are some photos:

topped off new battery.jpg
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starting mileage at 676.38.jpg
starting mileage at 676.38.jpg (33.03 KiB) Viewed 287 times
ending voltage for new battery range test at 53.0 volts after 27 plus miles.jpg
ending voltage for new battery range test at 53.0 volts after 27 plus miles.jpg (46.02 KiB) Viewed 287 times
ending mileage at 703.41.jpg
ending mileage at 703.41.jpg (42.63 KiB) Viewed 287 times





Today I had some more free time so I pulled out the 7 year old Ping 48 volt, 15 Ah pack, charged it for a few hours (all the leds were on for 45 minutes), mounted it on the 500 watt bike, and did a range test. This was a similar route to the routes I took the first 5 years. A little over 27 miles later, the battery shut down. Here are some pictures:

charging 7 year old ping 48v 15ah battery.jpg
charging 7 year old ping 48v 15ah battery.jpg (89.16 KiB) Viewed 287 times
ping at 16.2 pounds.jpg
ping at 16.2 pounds.jpg (40.43 KiB) Viewed 287 times
ping mounted on 500w bike.jpg
ping mounted on 500w bike.jpg (97.62 KiB) Viewed 287 times
starting mileage for 7 year old ping battery range.jpg
starting mileage for 7 year old ping battery range.jpg (37.9 KiB) Viewed 287 times
ending mileage for ping range test at 746.32.jpg
ending mileage for ping range test at 746.32.jpg (61.91 KiB) Viewed 287 times

ping battery range route 6-14-19.jpg
ping battery range route 6-14-19.jpg (139.16 KiB) Viewed 287 times


This battery is awesome! It is going back in an ammo can for power outages also.

The 4 year old samsung 22p pack is still doing well. I use it when I go somewhere far where my bike will be locked out of sight for a while. The 15s, 12p 25r pack has lost some capacity but can still get me 35+ miles. Both these packs are almost in perfect balance. All my packs are stored between 54-57 Volts. So far, I have not needed to balance these packs yet. The MJ1 pack was bad cells from the start. Plan to make a 1/2 fairing (handle bars and below) for next years commute. Should save me 13% and keep me warmer in cold winds. If it works, will report back.

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