Search found 190 matches

by famichiki
Aug 10 2020 2:36am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

There is a discussion by Mmarc67 on the Cyclurba.fr forum about removing the captive HK2214 roller bearing from the torque sensor assembly. https://cyclurba.fr/forum/510674/moteur-pn-dalier-tongcheng-tsdz2.html?from=331&discussionID=19836&messageID=510674&rubriqueID=110&pageprec= Basically you need ...
by famichiki
Aug 09 2020 8:23pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

This picture shows 2x HK2214 bearings, but that is the only one I could find here . So the diagram would be: bearingplaces2.jpg I've removed the non-drive side roller bearing, so can confirm there are two HK2214 used. On both the drive and non-drive sides there are steps in the gear case to hold th...
by famichiki
Aug 09 2020 6:43pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

Does anyone know if we should lube the torque sensor? The disc surfaces are clean but have some some kind of tacky, waxy feel to them so maybe there was something applied from the factory that has dried up? Also how about on the central disc (teflon?), it looks like it has some dirty grease on there...
by famichiki
Aug 08 2020 7:31pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

But have you compared the drag compared to say the early Bosch and Shimano units ? The Bafang BBS02 I had was definitely worse, the Bosch unit I rode was similar to worse, but then if you go fitting lots of gears and sprag clutches you can't expect any thing less. On mine using the V20 software I h...
by famichiki
Aug 08 2020 6:34pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

Shock load is what will start a crack at the snap ring groove. It usually won't break right away, the crack will slowly expand over time. There is also a matter of luck. Some will crack and others won't. But once the crack starts the part is doomed. Offroad riding seems to be a step too far for thi...
by famichiki
Aug 07 2020 7:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: Hardware temperature control tsdz2
Replies: 128
Views: 14053

Re: Hardware temperature control tsdz2

Thanks for these measuring experiments. The choice for padsizes could now be more fine-tuned on the different places. Are you planning to do this experiment too between motormount and gear case? Because you had said you to consider inserting an aluminium plate there. Between the motor face and the ...
by famichiki
Aug 06 2020 11:30pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

I was reading some posts on the German forum and saw a creative solution with 6902 2RS axle bearings. ... they add also on the spiderside an extra bearing, that works against sideway play of the sprag clutch bearing. Looking at the Bafang motors, they appear to have an external drive side bearing l...
by famichiki
Aug 05 2020 8:17pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

From the photo I saw replacing the outer seal in the crank adapter with a sealed bearing won't add support to the shaft. It might take some play out of the sprag clutch. But I don't think it will help the broken shaft issue. Yes it doesn't look like it would help with the axle breakages on the driv...
by famichiki
Aug 05 2020 6:43pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

Could you please give a link where you found these brass sheets? I was thinking to use steel feeler gauges, but softer brass is a lot better I bought it from a hobby store on Ebay, search for brass shim. Prices vary, but packs like this can be found cheaply and it was about USD $12 including post. ...
by famichiki
Aug 05 2020 6:13pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

I was reading some posts on the German forum and saw a creative solution with 6902 2RS axle bearings. This is an interesting idea, if only there was a way to keep the drive side seal too. I also like your idea of using a roller bearing, seeing as though the torque sensor uses them anyway. However m...
by famichiki
Aug 05 2020 4:22am
Forum: E-Bike Non-hub Motor Drives
Topic: Hardware temperature control tsdz2
Replies: 128
Views: 14053

Re: Hardware temperature control tsdz2

The wiki says to add 3mm thermal pads to the motor end cap. Thicker pads are actually needed as the air gap between the side cover measures around 3.5 - 4.5mm depending on whether it's around the outside or in the centre over the terminals. The air gap on the controller housing is around 1.5mm. 5mm ...
by famichiki
Aug 04 2020 9:07pm
Forum: E-Bike Non-hub Motor Drives
Topic: Hardware temperature control tsdz2
Replies: 128
Views: 14053

Re: Hardware temperature control tsdz2

Elinx wrote:
Aug 04 2020 6:05pm
Yes there is a chance that this happens if both sides are sticked. To prevent that you can use aluminium or copper tape on one side.
I've seen a few people here mentioning copper, but using aluminium will remove the possibility of galvanic corrosion of the motor and case.
by famichiki
Aug 04 2020 7:46pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

Investigating the different revisions of torque sensors further. The separate ring has been mentioned before, there's the older 2 button and newer 3 button versions. However, the main torque sensor assembly has an older version with no central riser (which used shim washers) and a newer version with...
by famichiki
Aug 04 2020 5:54pm
Forum: E-Bike Non-hub Motor Drives
Topic: Hardware temperature control tsdz2
Replies: 128
Views: 14053

Re: Hardware temperature control tsdz2

The pads are sticky, but they must being installed a bit under pressure for best heat conductivity, So it is not adhesive like glue. They are soft for maximal gap filling and deform easy like clay. There is also heat conductive tape, but that has a tiny thickness. That is more adhesive and with tha...
by famichiki
Aug 04 2020 10:04am
Forum: E-Bike Non-hub Motor Drives
Topic: Hardware temperature control tsdz2
Replies: 128
Views: 14053

Re: Hardware temperature control tsdz2

What do you mean with "not self-adhesive" imho AAB and Chinese pads are sticky on both sides and easy to detach. They have a natural tackiness but I'm not sure how strong, they are not suitable for holding a heatsink in place for example. Only a few brands specifically mention they have self adhesi...
by famichiki
Aug 04 2020 3:40am
Forum: E-Bike Non-hub Motor Drives
Topic: Hardware temperature control tsdz2
Replies: 128
Views: 14053

Re: Hardware temperature control tsdz2

How are people keeping the pads in place during reassembly? Most, including the AAB ones used in the wiki, are not self-adhesive.
by famichiki
Aug 03 2020 6:46pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

Another option for blue gear grease is Inox MX6 and the manufacturer has confirmed it's safe for plastic gears. It's a synthetic PAO base extreme pressure grease using an organo-clay bentone thickener and with PTFE. It's available in various sizes, I have a 30g tube here and it looks like easily eno...
by famichiki
Aug 02 2020 7:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

As much as I can tell, it looks like the older versions of the motors were put together better and with closer tolerances. Older models have the double non-drive side bearings, proper shims on the axle and sprag clutch, and a tighter fitting sprag clutch with wider inner race contact area that was d...
by famichiki
Aug 02 2020 6:19pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

..... Right, well it looks like there's actually two then but the other isn't shown on your diagram. ..... This picture shows 2x HK2214 bearings, but that is the only one I could find here . Thanks. Sounds like they ran into the same problem, I wonder if they ever managed to get the captive bearing...
by famichiki
Aug 02 2020 5:13pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

This is what I see of the torque sensor in another picture (I have added the bearingtypes) The yellow question mark on your picture is the HK2214 bearingplaces.jpg Right, well it looks like there's actually two then but the other isn't shown on your diagram. One captive on the torque sensor at the ...
by famichiki
Aug 02 2020 4:49pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

No, there is just one bearing on the torque sensor (HK2214 as you said, ID=22mm) The other one on the non drive side is one roller bearing (6902RS ID=15mm) on new type and two on old type TSDZ2 axle. On the drive side there is the sprag clutch bearing (CSK30P, ID=30mm). This photo from the repair g...
by famichiki
Aug 02 2020 3:14pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

Is this a roller bearing and is it somehow removable? Does anybody know the bearing code of it? It is a needle bearing HK2212 But there is mentioned also the HK2214 or even HK2216 So there are two roller bearings used on the torque sensor? Because there is one visible on the other end from the non-...
by famichiki
Aug 02 2020 7:32am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

Is this a roller bearing and is it somehow removable? Does anybody know the bearing code of it?
by famichiki
Aug 02 2020 7:24am
Forum: E-Bike Non-hub Motor Drives
Topic: Hardware temperature control tsdz2
Replies: 128
Views: 14053

Re: Hardware temperature control tsdz2

I have these ones and they definitely make a difference compared to nothing. Is the spacing exactly 1.5mm? I wonder if it would be possible to use 1.5mm copper sheet + thermal paste instead of the pads (could use small pieces, or a big piece cut and sanded to the right shape) ..? I plan to do somet...
by famichiki
Jul 31 2020 8:13pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 7618
Views: 792982

Re: New "TSDZ2 Torque Sensor Central Motor"

Could a standard V seal fit also? I don't know the width from the stock seal. ID=80mm OD=86mm W= ? VA80 or VA080 needs a support width of 6.8mm and seals max.width of 10.2mm, but OD is imho 98mm, which is a lot more than 86mm, but I don't know how this fit with the plastic cover. X seal standard di...