Search found 32 matches

by leisesturm
Oct 23 2020 11:05am
Forum: E-Bike Non-hub Motor Drives
Topic: Mid Drive Off Road Only BBSHD or TSDZ2
Replies: 13
Views: 434

Re: Mid Drive Off Road Only BBSHD or TSDZ2

Got my battery last night from EM3EV. It was put on the boat on the 10th. I was told it wouldn't hit California till the 31st and then it would be another week to get to Oregon. HTH but YMMV.
by leisesturm
Oct 23 2020 10:46am
Forum: E-Bike Technical
Topic: TSDZ2 - topspeed on pure throttle?
Replies: 3
Views: 132

Re: TSDZ2 - topspeed on pure throttle?

Given all you have said ... 18mph. Maybe not even that. But with the right wind maybe 20mph, who knows. You are in the best position to know. I just got my battery last night. I've had the TSDZ2 in the garage for two weeks longer than that. I don't expect to go much faster than I do now. ~18mph to ~...
by leisesturm
Oct 21 2020 1:27pm
Forum: E-Bike Non-hub Motor Drives
Topic: Mid Drive Off Road Only BBSHD or TSDZ2
Replies: 13
Views: 434

Re: Mid Drive Off Road Only BBSHD or TSDZ2

I think a BBS02 vs TSDZ2 is a more fair comparison. It just shows the enduring nature of torque sensing over PAS that the TSDZ2 continues to hold on to market share despite the introduction of the BBSHD. TongShen would CLEAN UP if they ever put something like a BBSHD with torque sensing on the marke...
by leisesturm
Oct 18 2020 5:06pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7988
Views: 850249

Re: New "TSDZ2 Torque Sensor Central Motor"

I think using a luggage scale is safer and easier, I used just a super cheap mechanical spring scale from a hardware store. I hanged the scale from a chin-up bar above the bike, with a rope that I could also pull down. The hook of the scale goes to pedal, and keeping the crank horizontal with my fo...
by leisesturm
Oct 17 2020 11:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7988
Views: 850249

Re: New "TSDZ2 Torque Sensor Central Motor"

Sounds dangerous. There are no 50lb. weights btw. There are only 5,10,25 & 45lb weights. A 25lb weight is no joke and a 45lb plate is an absolute beast. That's why I think some kind of large torque wrench might be more workable. I didn't think asking here was a bad thing. What is the point of us all...
by leisesturm
Oct 17 2020 3:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7988
Views: 850249

Re: New "TSDZ2 Torque Sensor Central Motor"

So, I have a question about calibrating the torque sensor of the TSDZ2. Mine just arrived Thursday, but my battery is not here yet. In the meanwhile I have been reading the OSF Wiki and also this thread. My dealer says calibrating the torque sensor is not essential but is recommended. The process, i...
by leisesturm
Oct 17 2020 3:34pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7988
Views: 850249

Re: New "TSDZ2 Torque Sensor Central Motor"

gain /should/ be on some sort of logarithmic scale, as you want small steps at the low end and bigger steps at the high end. too many naïve programmers implement linear gain steps (for instance 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%), if you do this with volume, brightness, or most any o...
by leisesturm
Oct 17 2020 3:50am
Forum: E-Bike Non-hub Motor Drives
Topic: How do you size the right Mid Drive?
Replies: 10
Views: 367

Re: How do you size the right Mid Drive?

. So how do I make sure I get a system strong enough to carry me up the hill with out burning anything out and at the same time not too powerful where it's dangerous? Do I really need 1500w to get me up a steep hill? If your choice is between the BBS02 and the BBSHD I would say get the BBSHD. 1500W...
by leisesturm
Oct 17 2020 3:37am
Forum: E-Bike Non-hub Motor Drives
Topic: Which mid drives have an even Q factor?
Replies: 2
Views: 203

Re: Which mid drives have an even Q factor?

What mid drives have an even Q factor? (i.e. Distance from the frame to the pedal is the same on both the right and the left side) I believe Bafang BBSHD's have even Q right out of the box, but the rest (and it isn't that long a list) can be made to have even Q with a change of one or both cranks. ...
by leisesturm
Oct 06 2020 11:28pm
Forum: E-Bike General Discussion
Topic: Geared Hub Motor for 135MM FRONT dropouts
Replies: 8
Views: 429

Re: Geared Hub Motor for 135MM FRONT dropouts

It's expensive, but I think the Grin "All Axle Motor" would work here. Grin also has pre-fabricated 1/4" steel torque arms.
by leisesturm
Oct 06 2020 11:23pm
Forum: E-Bike General Discussion
Topic: Torp 11kW / 29kg mid drive electric free rider prototype
Replies: 23
Views: 2947

Re: Torp 11kW / 29kg mid drive electric free rider prototype

"If it sounds too good to be true, it probably is ..." -anon.
by leisesturm
Oct 04 2020 11:45pm
Forum: E-Bike General Discussion
Topic: Buying used e-bikes
Replies: 26
Views: 771

Re: Buying used e-bikes

I wasn't clear, there are some good lightly used second hand bike available I can buy immediatly. My worry is about how risky is to buy a second hand e-bike, for example with a Panasonic mid motor system? It is very risky to buy a used e-bike. I wouldn't do it. There are no 'good, lightly used, sec...
by leisesturm
Sep 30 2020 6:47pm
Forum: E-Bike General Discussion
Topic: Thinking Outside the Shark Battery
Replies: 20
Views: 716

Re: Thinking Outside the Shark Battery

... [R]iding an unsuspended cargo bike I don't think he is about to break speed records. I sure hope you're wrong because that's exactly what I plan. This is going to be the fastest damn cargo bike on the West Coast. Maybe both coasts. To your point, the bar is likely not astoundingly high :-) Unsu...
by leisesturm
Sep 30 2020 2:58pm
Forum: E-Bike General Discussion
Topic: Thinking Outside the Shark Battery
Replies: 20
Views: 716

Re: Thinking Outside the Shark Battery

I'd bet money it won't go square in the middle, because of the chain, but slightly offset to the left, it might go. It's about the wettest dirtiest spot on the bicycle though, isn't it? I believe that frame uses a 68mm bottom bracket shell, so I agree it can't be centered, since the battery is 81mm...
by leisesturm
Sep 29 2020 11:58pm
Forum: E-Bike General Discussion
Topic: Thinking Outside the Shark Battery
Replies: 20
Views: 716

Thinking Outside the Shark Battery

Greetings, a couple of weeks ago I bought this bike: https://flic.kr/p/2jHftd1 and yesterday I bought this battery: https://em3ev.com/shop/50v-14s5p-rectangle-battery-pack/?doing_wp_cron=1601441773.7520489692687988281250 . I can tell you which motor I bought too but my question concerns the battery....
by leisesturm
Sep 29 2020 11:02am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7988
Views: 850249

Re: Problem with torque sensor!

1. Why does the sensor value not change on force? 2. Also is there a way to simulate pedal force without installing it on motor? 3. I read the wiki but is not very clear how to do it with 2 screwdrivers. 3a. Maybe someone knows better how a torque sensor works and has some ideas. 1. It probably is ...
by leisesturm
Sep 28 2020 7:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7988
Views: 850249

Re: New "TSDZ2 Torque Sensor Central Motor"

The controller is the same on a 48 Volt and 36 Volt system. But the firmware from the factory is not the same. I would not run a 36 Volt motor with a 48 Volt programmed controller. If you use the OSF software and put the settings so that it's a 36 Volt motor and you can safely run 52 Volt batteries...
by leisesturm
Sep 28 2020 4:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7988
Views: 850249

Re: New "TSDZ2 Torque Sensor Central Motor"

Hi, I am Tom and new in this forum. I recently bought the tsdz2 48V 500W motor and installed it to a full suspension mountainbike. I really like the torque sensing and the small form factor. However I do like to have a higher cadence. The motor can do 4000 rpm which is about 90 rpm at the cranks. B...
by leisesturm
Sep 27 2020 8:39pm
Forum: E-Bike General Discussion
Topic: A new 700C hybrid 'city-bike' build w TSDZ2
Replies: 24
Views: 809

Re: A new 700C hybrid 'city-bike' build w TSDZ2

Nice bike, but not, IMO a good candidate for what you want to accomplish. Take a look at some turn-key commuter bikes. Most of them have either a suspension fork OR seriously large tires ~2.4". "30mph lightly pedaling" is not realistic with any tire that will fit under the fork crown of that bike. A...
by leisesturm
Sep 17 2020 11:35am
Forum: E-Bike General Discussion
Topic: 52 volt batteries proceed with caution
Replies: 26
Views: 928

Re: 52 volt batteries proceed with caution

EMP powered is a top notch reseller of Bafang mid drives. I’m nafraid your comments are not only unwarranted but also without merit. ??? I didn't say anything about EMP's reputation. In fact, what I said was that it appeared that EMP is using their reputation to pursue an agenda. I see nothing in w...
by leisesturm
Sep 16 2020 3:27pm
Forum: E-Bike General Discussion
Topic: (What is) The Best Damn 500W (front) Hub Money Can Buy?
Replies: 20
Views: 632

Re: (What is) The Best Damn 500W (front) Hub Money Can Buy?

Leaf 1500W is a better hub motor in every way than Crystalyte H series. But neither one is a 500W motor! And that's what you led with when you asked your question. What's your reasoning in using a big motor to do a small motor's job? Well, the Grin people sell the Clyte H as a 500W motor but they s...
by leisesturm
Sep 16 2020 2:14pm
Forum: E-Bike General Discussion
Topic: (What is) The Best Damn 500W (front) Hub Money Can Buy?
Replies: 20
Views: 632

Re: (What is) The Best Damn 500W (front) Hub Money Can Buy?

But in front, I'd definitely lean towards a lighter geared motor, than a 15 pound 9c type dd. Bear in mind, I put 5000 commute miles on front hubs, and once built a 4000w 50 mph race bike with front hub. I liked front hub that much. But I never really liked the weight of it up front. I did front fo...
by leisesturm
Sep 16 2020 12:54pm
Forum: E-Bike General Discussion
Topic: (What is) The Best Damn 500W (front) Hub Money Can Buy?
Replies: 20
Views: 632

Re: (What is) The Best Damn 500W (front) Hub Money Can Buy?

I see you still don't get it. "BEST" is a question which CAN NOT BE ANSWERED, until and unless, YOU, the OP, describe just exactly what YOU want to do with it. Bob. With all the respect due that you don't deserve. Other responses to my post prove that you are WRONG. I have forgotten more about e-bi...
by leisesturm
Sep 14 2020 11:15pm
Forum: E-Bike General Discussion
Topic: 52 volt batteries proceed with caution
Replies: 26
Views: 928

Re: 52 volt batteries proceed with caution

I don't get it. The article reads like the company had a demand for 52V packs, so they built a bunch with shoddy construction, then blame it on the fact that it's a 52V pack when they failed? Is that it? Not sure what to conclude. Or are they focusing only on Hailong packs? I don't get it either. B...
by leisesturm
Sep 14 2020 9:44am
Forum: E-Bike General Discussion
Topic: (What is) The Best Damn 500W (front) Hub Money Can Buy?
Replies: 20
Views: 632

Re: (What is) The Best Damn 500W (front) Hub Money Can Buy?

"BEST" is a judgement call requiring a well-described set of usage conditions in order to give a useful answer. It's kind of like identifying the "STUPIDEST" question, for which this one is a serious contender. I would kind of get it if yours was the first response to my question. Seeing as you had...