Search found 335 matches

by knutselmaaster
Mar 08 2020 4:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Does anyone have any recommendations for bigger chain rings (available in the UK)? I'd like to swap out the default one for something larger as I find I spend all my time in the 11t cog at the rear and it wears out in about 800 miles as I have a heavy cargo bike usually riding with my two kids. If ...
by knutselmaaster
Mar 08 2020 2:59pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Does anyone have any recommendations for bigger chain rings (available in the UK)? I'd like to swap out the default one for something larger as I find I spend all my time in the 11t cog at the rear and it wears out in about 800 miles as I have a heavy cargo bike usually riding with my two kids. If ...
by knutselmaaster
Feb 17 2020 2:44pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

As far as I know, this is a standard size chain, only a bit stronger.
So it should work with this motor without any problems.
by knutselmaaster
Feb 16 2020 7:27am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Hi, I'm hoping someone can help me with some issues I've been having with my tsdz2 build. I bought the 750w 48v motor, planning to get a 48v battery in NZ. This proved impossible for me so I had to settle for a 36v battery. I flashed the 36v files from the eco-bike tutorial which was easy enough. O...
by knutselmaaster
Jan 18 2020 4:42pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

The magura ones are very streamlined and can be placed anywhere: viewtopic.php?t=34122
by knutselmaaster
Dec 31 2019 6:07am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Axles are made of hardened steel. When steel gets hardened it looses it's flexibility.
In short, it's a trade in between wear resistance and flexibility.
by knutselmaaster
Dec 28 2019 5:56pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Another problem I got today while riding as usual, small trip of 5 kms around home. Suddenly, I could hear the motor working and see on display the motor ERPS speed at max values of 525 although no help assisting to pull the bicycle... The motor shaft broke!!! Does anyone knows why did this happen?...
by knutselmaaster
Dec 20 2019 2:42pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Often a full outer cable even fits between the bottom bracket and the motor. Push the cable against the right side of the motor, slide the motor half way into the bottom bracket, move the outer cable a bit inward to make it slide over the screw holes of the motor housing, insert the motor all the wa...
by knutselmaaster
Dec 09 2019 1:48pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Indeed, you're absolutely right. There are other explanations that can explain why this happens especially at very low temperature. The thick grease preventing the one way bearing to lock in is quite possible, and should be easy to identify: If it only slips at the moment the lock should start (axle...
by knutselmaaster
Dec 09 2019 12:37pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

No I don't criticise, I share my (long) experience with these kind of things because I want to help. And no I don't have the solution; as I mentioned it will need thorough long term testing and I'm not doing that, the problem didn't occur on my clients bikes nor on my own in the first place. The bea...
by knutselmaaster
Dec 08 2019 7:54pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Is neoprene glue adequate? It will have some sort of flexibility I don't know how it will react to the components in the grease. The problem with neoprene glue is that it needs to be applied to both surfaces and dry a bit before making contact. This will give a thick layer that won't fit in the ver...
by knutselmaaster
Dec 08 2019 1:06pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Metal has a bigger expansion under temperature change than plastic. If the bearing was any bigger (or the gear smaller) the gear would crack when the motor gets hot. Disadvantage is that it will slip when it gets very cold. I think the glue will crack too if it hardens a lot, as it has no expansion...
by knutselmaaster
Dec 08 2019 10:13am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Metal has a bigger expansion under temperature change than plastic. If the bearing was any bigger (or the gear smaller) the gear would crack when the motor gets hot. Disadvantage is that it will slip when it gets very cold. I think the glue will crack too if it hardens a lot, as it has no expansion ...
by knutselmaaster
Dec 04 2019 4:29pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Check the Rayvolt EIVA app. It is quite nice and gives good ideas of possible features.
by knutselmaaster
Nov 27 2019 1:46am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

So I sent the pic of broken torque sensor to ebird store and they asked for a pic of the motor on the bike in relation to the chainstays. I sent them the pic and they say the motor is too close to the frame and I should increase the gap by putting a washer on or bending the frame. Obviously I'm not...
by knutselmaaster
Nov 19 2019 7:49am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Hi, I own an Omnium cargo bike, with a 750w, 48V TSDZ2 mounted on it. I am thinking of selling it and getting a Riese und Müller Packster 80, with a Performance Line CX gen2 motor. I go uphill a lot. I once had the opportunity to ride the Packster 80, but only for about 5 minutes. The Bosch drive s...
by knutselmaaster
Oct 31 2019 7:39am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Am i realy truly being unrealistic if i want 10-20000 KMs without servicing(read below my concerns about size and weght)? I have seen posts of people that say that they have done 10-15.000km on a geared hub motor ebike without even servicing then once ,but not read about anyone doing the same with ...
by knutselmaaster
Oct 08 2019 7:03am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

You're absolutely right. Too low cadence is the main cause of problems, complaints and premature wear for mid motors. Manufacturers tell everybody in their marketing that mid motors are way better than hub motors because they, so they say, always run in optimal speed. In reality, it all depends on t...
by knutselmaaster
Oct 03 2019 12:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Okay. I think I have figured out why I only sometimes get power. It seems that if I power on at different crank alignments I get different base torque sensor readings and as I rotate the cranks then the base level changes. In my earlier testing my max rE1 I could get by standing on the pedals was a...
by knutselmaaster
Sep 30 2019 6:53am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Hi all, first post here :-) I'm strongly considering this motor for my first ebike build. I'm confident with electronics tinkering and firmware flashing from other hobbies, so this one should be no problem. The base bike will be a Rockrider 540 from decathlon. ( Photo of bottom bracket here ) Coupl...
by knutselmaaster
Sep 20 2019 2:27pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

Use some loctite on the thread of the 2 screws, put some washers to assure the plate is tightened 100% flat. Put some grease on the big ring's thread and tighten it as strong as you can, don't hesitate to make the special tool a bit longer (using a tube for example) to be able to put more torque on ...
by knutselmaaster
Sep 18 2019 3:43am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 8064
Views: 871887

Re: New "TSDZ2 Torque Sensor Central Motor"

There are some pictures, early in this topic, of an alternative way to fix the motor at the rear.
by knutselmaaster
Sep 17 2019 2:33am
Forum: E-Bike Technical
Topic: Questions about inner controller of BMSBATTERY
Replies: 8
Views: 647

Re: Questions about inner controller of BMSBATTERY

The 201rpm 36v does about 20mph @ full 36v battery already (42v) on that wheel size. (No load)
by knutselmaaster
Sep 16 2019 2:08pm
Forum: E-Bike Technical
Topic: Questions about inner controller of BMSBATTERY
Replies: 8
Views: 647

Re: Questions about inner controller of BMSBATTERY

The best thing to do is to use your display to set max power, according to the motor. The (135mm wide) q100cst is only a 250w rated motor so you'd better not give it 100% of a 6 MOSFET controller (under heavy load) The 142mm version of the q100cst (which is in fact a q100h-cst) is a 350w rated motor...