Search found 37 matches

by leisesturm
Dec 29 2020 4:42pm
Forum: General Discussion
Topic: Girl goes 176 MPH in her Corvette, and gets to try out for a race team! pg 2
Replies: 44
Views: 2642

Re: Girl goes 176 MPH in her Corvette, and Sarah reviews the C8 Corvette pg 2

Look, I get that America writes at ~5th grade level. I even get that none of you re-read your writing and fix the auto-correct bloopers, but what the frock is it when you just leave whole words out of sentences? How hard is it to type in all the words necessary to form a complete thought in your Mot...
by leisesturm
Dec 02 2020 1:56pm
Forum: General Discussion
Topic: Pedal powered generator
Replies: 6
Views: 393

Re: Pedal powered generator

It wouldn't be my thinking that a piece of legacy equipment from 1967 would be viable in 2020. Not the device itself, but it's components. Permanent magnets will have lost power, capacitors may have leaked, bearings may be dried out. Is there a plan to ascertain the functionality of the device? Ther...
by leisesturm
Nov 23 2020 5:06pm
Forum: EBike Technical
Topic: Power meter as torque sensor?
Replies: 4
Views: 301

Re: Power meter as torque sensor?

I could be very wrong, because I veered off from Grin's products and went the mid-drive route, but I had, at one time, familiarized myself with the torque sensing options. I seem to remember Hollowtech II spindles as an option with at least one product in the Grin lineup and I doubt it was the Thorn...
by leisesturm
Nov 17 2020 2:15am
Forum: EBike Non-hub Motor Drives
Topic: Chain catcher with more reach
Replies: 2
Views: 300

Re: Chain catcher with more reach

You're just going to have to McGuyver something or put some pictures up so we can see what you are working with. Do you have a single chainring? Move the pants guard from the outside to the inside? Or use pants guards on both sides of the chainring and trap the chain inbetween them? Or just put a fr...
by leisesturm
Oct 23 2020 11:05am
Forum: EBike Non-hub Motor Drives
Topic: Mid Drive Off Road Only BBSHD or TSDZ2
Replies: 22
Views: 1542

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: EBike Technical
Topic: TSDZ2 - topspeed on pure throttle?
Replies: 3
Views: 245

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: EBike Non-hub Motor Drives
Topic: Mid Drive Off Road Only BBSHD or TSDZ2
Replies: 22
Views: 1542

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: EBike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8298
Views: 906635

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: EBike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8298
Views: 906635

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...
by leisesturm
Oct 17 2020 3:51pm
Forum: EBike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8298
Views: 906635

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: EBike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8298
Views: 906635

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: EBike Non-hub Motor Drives
Topic: How do you size the right Mid Drive?
Replies: 36
Views: 824

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: EBike Non-hub Motor Drives
Topic: Which mid drives have an even Q factor?
Replies: 2
Views: 297

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: EBike General Discussion
Topic: Geared Hub Motor for 135MM FRONT dropouts
Replies: 8
Views: 529

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: EBike General Discussion
Topic: Torp 11kW / 29kg mid drive electric free rider prototype
Replies: 23
Views: 3163

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: EBike General Discussion
Topic: Buying used e-bikes
Replies: 26
Views: 1022

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: EBike General Discussion
Topic: Thinking Outside the Shark Battery
Replies: 20
Views: 822

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: EBike General Discussion
Topic: Thinking Outside the Shark Battery
Replies: 20
Views: 822

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: EBike General Discussion
Topic: Thinking Outside the Shark Battery
Replies: 20
Views: 822

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: EBike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8298
Views: 906635

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: EBike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8298
Views: 906635

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: EBike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8298
Views: 906635

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: EBike General Discussion
Topic: A new 700C hybrid 'city-bike' build w TSDZ2
Replies: 25
Views: 1134

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 ...
by leisesturm
Sep 17 2020 11:35am
Forum: EBike General Discussion
Topic: 52 volt batteries proceed with caution
Replies: 27
Views: 1506

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...