Search found 706 matches
- Jul 29 2020 3:16pm
- Forum: Battery Technology
- Topic: Laudation batteries
- Replies: 18
- Views: 1261
Re: Laudation batteries
- Heat buildup under a moderate 10amp load for an hour is concerning My 10S3P with Samsung 30Q 141 cells isn't abused. Never draw more than a 5amp load at most and then no more than 1 minute at most. IMO, a 10amp load is NOT moderate with 30Q cells making up a 36V 10S3P (9 Ah) battery pack. Samsung...
- Jul 28 2020 8:22am
- Forum: Battery Technology
- Topic: Laudation batteries
- Replies: 18
- Views: 1261
Re: Laudation batteries
Thanks Sundar. The specs of the NCR (or Samsung) cells are pretty well known – but these don’t visibly look like the NCR cells advertised. They do have the amp hours advertised. 1hr 15min at roughly 10 amps is about right (it wasn’t full throttle the whole time). My concerns are: - Build quality is ...
- Jul 27 2020 4:26pm
- Forum: Battery Technology
- Topic: Laudation batteries
- Replies: 18
- Views: 1261
Re: Laudation batteries
True.
Although I have been using my snowjoe battery pack as a range extender. They are 10s2p and give me about 30 minutes at full throttle. (Samsung 30q batteries). That was only $120 shipped.
What else am I going to do with the batteries for my snowblower in the summer time?
Although I have been using my snowjoe battery pack as a range extender. They are 10s2p and give me about 30 minutes at full throttle. (Samsung 30q batteries). That was only $120 shipped.
What else am I going to do with the batteries for my snowblower in the summer time?

- Jul 27 2020 2:48pm
- Forum: Battery Technology
- Topic: Laudation batteries
- Replies: 18
- Views: 1261
Re: Laudation batteries
I took a chance and bought these - laudation 36V 10ah Li-ion Battery 18650 (10s3p) for $135 shipped https://www.ebay.com/itm/laudation-36V-10ah-Li-ion-Battery-18650-Rechargeable-battery-for-E-Bike-Electric/254277288980?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 (they have changed...
- Jun 25 2020 1:17pm
- Forum: E-Bike Non-hub Motor Drives
- Topic: Sonders Rockstar
- Replies: 7
- Views: 521
Re: Sonders Rockstar
Ok, I'm curious. Its good to see him branching out like this. Still, you are looking at CAD models, so no telling what the final bike will really be like, If you remember 5 years ago, a LOT changed from the initial pictures (mostly for the better). There are old posts here where I documented that hi...
- Mar 28 2019 10:14am
- Forum: E-Bike General Discussion
- Topic: hardcore commuter now in the 20K mile club
- Replies: 18
- Views: 1852
I'm impressed!
Dang, that is impressive. Looks like part of your ride is pretty with nice patches of nature. I though I commuted a lot, but I probably only do 3000 miles a year. I blame winter! Nice photos – the woman in that last photo looks like someone I used to date in Germany. :-) That is an impressive build,...
- Dec 14 2017 9:55am
- Forum: E-Bike General Discussion
- Topic: Cute Q100 lightweight builds slow mtb, fast road
- Replies: 291
- Views: 60955
Re: Cute Q100 lightweight builds slow mtb, fast road
Sort answer: range. The basic advantage is they can be transported without normal lithium hassles. But the can also be strung togetheer in various combinations. I think it is a little silly to buy the biggest battery you would ever need and carry it with you every where you go. LiGo allows you to ha...
- Dec 13 2017 1:27pm
- Forum: E-Bike General Discussion
- Topic: Cute Q100 lightweight builds slow mtb, fast road
- Replies: 291
- Views: 60955
Re: Cute Q100 lightweight builds slow mtb, fast road
@rolandhorth That is great Roland, sounds like you have created exactly what you need. I think a CX (or gravel) bike is the perfect platform for a fast light drop bar commuter for someone who wants to add their own pedal power. Your setup is great for someone who can do 18-20mph on their own. Its ki...
- Nov 06 2017 1:50pm
- Forum: E-Bike Build Threads / Photos & Video
- Topic: Single-speed track stealth ultralight
- Replies: 201
- Views: 26691
Re: Single-speed track stealth ultralight
I love the mighty mini. Long before they came out with that, I asked them if they would make me one in 36v format. At the time they were not interested in 36v packs, so I had em3ev make me one (same size and watt hours, but much more Ah). I'm glad they took the idea and ran with it (at least in a 52...
- Nov 06 2017 12:16pm
- Forum: E-Bike Build Threads / Photos & Video
- Topic: Single-speed track stealth ultralight
- Replies: 201
- Views: 26691
Re: Single-speed track stealth ultralight
I have a seatpost battery for one of my builds. with my 3lb battery it works. I wouldn't want too much weight that high. How do you attach the power feed to the backpack? I saw one design once that used magnetic coupling effectively acting as a quick disconnect to the power supply. I did do the back...
- Nov 06 2017 12:13pm
- Forum: E-Bike General Discussion
- Topic: Anyone use fairings? Why not...?
- Replies: 53
- Views: 6520
Re: Anyone use fairings? Why not...?
Thanks for the replies. That is good info. Looks like the ZZ faring is $200. That is a lot for an experiment that may not work (although this time of year, wind chill is a factor in the northern latitudes!).
- Nov 02 2017 2:51pm
- Forum: E-Bike Non-hub Motor Drives
- Topic: Fixed gear hub for mid drive system
- Replies: 6
- Views: 1368
Re: Fixed gear hub for mid drive system
Maybe I'm missing something. Fixed gear means that you can not coast. The hub turns, the pedal turns. Pedal backwards, the hub turns backwards. Single speed means you only have one gear, but you can coast - that is what a freewheel does. There are no motors that use a fixed gear locking ring (i.e. l...
- Nov 02 2017 10:39am
- Forum: E-Bike General Discussion
- Topic: ebike Battery sellers
- Replies: 20
- Views: 2653
Re: ebike Battery sellers
yeah, don't skimp on batteries. Get a name brand like Panasonic or Samsung. I tend to get my stuff from Em3ev or ebike.ca.
- Nov 02 2017 10:36am
- Forum: E-Bike General Discussion
- Topic: Chromoly vs aluminum rear rack for battery packs?
- Replies: 13
- Views: 1492
Re: Chromoly vs aluminum rear rack for battery packs?
have you ever broken one?
I have had seat post attachment racks brake, but not the 4 point attachment racks. You can't accurately say steel is stronger than aluminum. It will bend more before it breaks than aluminum. If you are concerned about cracking/breaking - go for steel.
I have had seat post attachment racks brake, but not the 4 point attachment racks. You can't accurately say steel is stronger than aluminum. It will bend more before it breaks than aluminum. If you are concerned about cracking/breaking - go for steel.
- Nov 02 2017 10:33am
- Forum: E-Bike General Discussion
- Topic: Aluminum vs Steel vs Carbon E-bike Frames
- Replies: 50
- Views: 7615
Re: Aluminum vs Steel vs Carbon E-bike Frames
are you talkling make or buy? Really, it all depends on the frame builder as you can get a lot of overlap depending on what the frame builder wants. From a buy perspective: Steel is maybe 2lbs heavier (or more for a heavy duty frame). tends to ride better, doesn't fail catastrophically, and can be r...
- Nov 02 2017 10:26am
- Forum: E-Bike General Discussion
- Topic: Anyone use fairings? Why not...?
- Replies: 53
- Views: 6520
Anyone use fairings? Why not...?
A thread on efficiency got me thinking about fairings. I ran across this: "Numbers on the topic aren’t easy to find, but some that are regularly cited are extracted from David Gordon Wilson’s Bicycling Science. He states that a rider on a touring bike equipped with a partial fairing, and his or...
- Nov 02 2017 10:18am
- Forum: E-Bike Technical
- Topic: 6 fet controller with hub drive more efficient?
- Replies: 18
- Views: 2295
Re: 6 fet controller with hub drive more efficient?
And your ass weighs? Assuming your ass weighs 200 pounds or less, you are going at least 35 mph, running 1400w continuous. Nothing on earth will make your 35 mph more efficient, except aero. Your motor is running flat out, your controller is not pwm ing. To get better efficiency, buy a recumbent bi...
- Nov 02 2017 10:12am
- Forum: E-Bike Build Threads / Photos & Video
- Topic: Single-speed track stealth ultralight
- Replies: 201
- Views: 26691
Re: Single-speed track stealth ultralight
Here is my light weight speedster. The frame bag holds the battery, but it is mostly empty (or available for other cargo). I've cleaned up the wiring a little since this shot.
- Nov 02 2017 10:07am
- Forum: E-Bike Build Threads / Photos & Video
- Topic: Single-speed track stealth ultralight
- Replies: 201
- Views: 26691
Re: Single-speed track stealth ultralight
Nice – that is the bike I built in 2013. It is so much fun riding a fast light ebike (and super rare). I have a mountain bike version too, but I don’t use that much. Light and fast is my passion! Where did you buy the motor from? What rpm version is it? FYI, I went to the hardware store and found so...
- Nov 02 2017 9:56am
- Forum: E-Bike Non-hub Motor Drives
- Topic: Fixed gear hub for mid drive system
- Replies: 6
- Views: 1368
Re: Fixed gear hub for mid drive system
What are you trying to do?
There are no motors that accept lock rings.
Why in the world would you NOT want to COAST with a motor?
Not many motors can accommodate a single cog.
There are no motors that accept lock rings.
Why in the world would you NOT want to COAST with a motor?
Not many motors can accommodate a single cog.
- Nov 01 2017 8:35am
- Forum: E-Bike General Discussion
- Topic: E-bike Average speed vs Bike vs Car
- Replies: 21
- Views: 1987
Re: E-bike Average speed vs Bike vs Car
I average 34mph in my car 20 in my ebike, and 16 when pedaling
- Oct 30 2017 3:56pm
- Forum: E-Bike Technical
- Topic: BMS Rear Rack Battery Anyone tried it?
- Replies: 13
- Views: 2777
Re: BMS Rear Rack Battery Anyone tried it?
That sounds about right, weight wise. The weight of the motor (on my rear wheel) never bothered me as far as handling went. I think you'll be OK at those speeds on a bike like yours. If you want the bike to be more agile its not the best place. But at 15mph on a dutch style bike it should be OK. Tha...
- Oct 30 2017 3:50pm
- Forum: E-Bike Technical
- Topic: BMS Rear Rack Battery Anyone tried it?
- Replies: 13
- Views: 2777
Re: BMS Rear Rack Battery Anyone tried it?
Me too, as soon as I could get a 350watt-hours in a 10s3p (about 2 years ago, finally!). My battery is lighter than my motor!docw009 wrote: The Q100 is indeed 4.8 pounds. I've weighed mine. I bought a custom 10S-3P battery and it supports 30 miles of riding. Probably around 3 pounds and fits in a seat bag.
- Oct 26 2017 9:36am
- Forum: E-Bike Technical
- Topic: High-speed, long-distance (heavy "30^3") Q128 commuter build
- Replies: 67
- Views: 7238
Re: High-speed, long-distance (heavy "30^3") Q128 commuter b
Another benefit of a gravel bike. They tend to have large triangles specifically to fit frame bags like that (for bikepacking). A bike from the '90s (before compact frame geometry) has lots of triangle room. Yeah, I have the classic 1993 specialized Allez racing bike (the one in the movie of that ye...
- Oct 26 2017 9:23am
- Forum: E-Bike General Discussion
- Topic: Fixing flats, tubeless, plus hole-plugs and CO2 cylinders?
- Replies: 37
- Views: 4775
Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder
wow, quite the slash. Impressive that the sealant plugged it.
Certainly you don't want dirt getting inside the tire or near the tube where abrasion could be a problem. that and you don't want that crack to grow.
Certainly you don't want dirt getting inside the tire or near the tube where abrasion could be a problem. that and you don't want that crack to grow.