Search found 83 matches

by Retrorockit
Oct 14 2019 10:56am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Hello everybody, About motor temperature and cooling. I want better cooling, to be able to pull more power.. In the following I will describe my setup and use-pattern and hope to hear form anyone who have done some cooling experiments... Hi, it's not clear to me if your heatsink directly touches th...
by Retrorockit
Oct 08 2019 8:44am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

I do not know if someone already wrote about the influence of driving style on the efficiency of energy consumption, but I think it is quite interesting. We do not know the characteristics of the TSDZ2 motor. I reviewed several characteristics charts of BLDC motors. All of them have the highest eff...
by Retrorockit
Oct 01 2019 8:31pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

I know gas motors like a bit of flywheel effect to smooth things out, but do electric engines need flywheel effect ? I wonder if there was any feedback from the guy who machined the pictured gear ? Gas engines need a flywheel to carry through between the power stroke, and the intake exhaust and com...
by Retrorockit
Sep 08 2019 3:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Guys, I'm working on a short article for the cooling of the TSDZ2... I tried all sorts of things... At the end to keep it simple, let me tell you what I found to be best. Thermal Pads, GP extreme are best, and have high thermal transfer, but you can get something cheaper, just doesn't work as good....
by Retrorockit
Sep 07 2019 6:53pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

How about putting fine grit steel wool (000) pads between the motor and case? They are compressible, high conductivity. Does the motor and case needs to be electrically isolated? also exists fine copper wool, very good conductivity, i think that it work! it's suffit search on ebay... There is also ...
by Retrorockit
Sep 01 2019 6:54pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Did you have a chance to test 3mm pads? Did you order them from eBay? I received the 3mm pads, but haven't tested them at all as I have been very busy(in the process of moving currently). I am also generally satisfied with the cooling performance I'm getting at the moment with the pads I have in th...
by Retrorockit
Aug 28 2019 5:45am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: TI LM35?

TI LM35? At digikey there are 2 different ML35's and I can't determine which one(s) is/are the correct one for the motor temp sensor. The part #'s are DigiKey# 296-43342-ND MFG# LM35DZ/LFT1 https://www.digikey.com/product-detail/en/texas-instruments/LM35DZ-LFT1/296-35151-1-ND/3640792 LM35DZ/NOPB-ND...
by Retrorockit
Aug 25 2019 9:14am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

My new setup has developed a strange problem displaying current speed. My setup is a new TSDZ2 36v, KTLCD3, 48v batter (54.6v fully charged), V .019 of the OSS. The problem is that it does not register current speed. Instead after a long delay the speed is shown as a number up to around 4mph. Then ...
by Retrorockit
Aug 24 2019 8:22am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

the tapered squaed crankset interface need grease? Mine make crack noise (without grease) Cheers They should be lightly greased. When water gets into aluminum the aluminum swells up, and the Al oxide is extremely hard. This can make removal almost impossible, and the cranks may not be reusable. Whe...
by Retrorockit
Aug 24 2019 8:00am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

IDK much about these Shimano E 5000 E bike square taper cranks. But for $13.99 a set in 3 lengths I intend to find out. Maybe some of the European riders are familiar with them? https://blueskycycling.com/collections/cranks-bolts/products/shimano-steps-fc-e5000-crank-arm-set What do you want to kno...
by Retrorockit
Aug 23 2019 5:33pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

IDK much about these Shimano E 5000 E bike square taper cranks. But for $13.99 a set in 3 lengths I intend to find out. Maybe some of the European riders are familiar with them?
https://blueskycycling.com/collections/ ... nk-arm-set
by Retrorockit
Aug 23 2019 7:52am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Hey there I know many asked this in the past but I haven't found any recent comment of user who use the oss firmware: How are these holding up? I plan on converting a cargobike and most people suggest to use the bbs0x since they are supposedly holding up better with higher torque, well heat require...
by Retrorockit
Aug 14 2019 11:57am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Here in Boston we just had the hottest July on record, so I took it upon myself to do a thermal management mod for the TSDZ2. I was routinely having to dial back my assist usage to stay below 75C on my 23 mile (37km) round trip commute so I decided I would do something about the TSDZ2's awful therm...
by Retrorockit
Aug 12 2019 11:13am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Here is a price sheet for the Panasonic TIM pads. ............... Lower # is better. You can see that a thinner pad has less resistance, and lower cost. If used inside a copper ring to tranfer heat from all the way around the motor....... I understand your arguments for this choice. Copper and a th...
by Retrorockit
Aug 11 2019 1:39pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Here is a price sheet for the Panasonic TIM pads. https://www.digikey.com/products/en?FV=ffece3c0 Basically the thinner the pad the less expensive. Thermal conductivity is useful for comparing one material to another, but thermal resistivity takes into account the thickness of each part. Lower # is ...
by Retrorockit
Aug 11 2019 9:27am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

On the topic of thermal pads. ......... Panasonic seems to have made a thermal pad with graphite fibers aligned vertically........... In the link you gave I saw that these pads have a conductivity of 13 W/m-K, but for a price The cheap silicon pads about 2 W/m-K, that is a lot of a difference, but ...
by Retrorockit
Aug 11 2019 9:05am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

On the topic of thermal pads. ......... Panasonic seems to have made a thermal pad with graphite fibers aligned vertically........... In the link you gave I saw that these pads have a conductivity of 13 W/m-K, but for a price The cheap silicon pads about 2 W/m-K, that is a lot of a difference, but ...
by Retrorockit
Aug 10 2019 10:15am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

On the topic of thermal pads. The best themal transfer material is diamond, then graphite. Both of which are way beyond metals. Diamond is obviously not practical, and grahite forms in flakes or nano tubes that that conduct heat only lengthwise. Panasonic seems to have made a thermal pad with graphi...
by Retrorockit
Aug 09 2019 8:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

I got my Trek Navigator 400 going again. The Nexus 7 hub simply wasn't up to 750W power. Skipping in 7th gear. Probably a roller clutch not holding the power. So it now has a 6001 series Nexus 8 speed. I reused the older IM 70 roller brake because the cable setup was different for the newer IM 80. T...
by Retrorockit
Aug 09 2019 1:29pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

I'm in South FL so I need to do something with my TSDZ2. It's nice to know this simple mod works. I was planning something more elaborate, but if this gets the job done then why not. Thanks for posting your results. Thanks for the kind words. Yeah I tried to keep it as simple as possible. I wanted ...
by Retrorockit
Aug 09 2019 8:32am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Here in Boston we just had the hottest July on record, so I took it upon myself to do a thermal management mod for the TSDZ2. I was routinely having to dial back my assist usage to stay below 75C on my 23 mile (37km) round trip commute so I decided I would do something about the TSDZ2's awful therm...
by Retrorockit
Aug 06 2019 10:51am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

While converting my Nexus 7 IGH bike to 8 speed Nexus I came across an interetsing IGH hub. Shimano makes a 5 speed IGH. It's interesting because it's E bike rated. Probably world spec. 350W. 1st gear is direct and the rest overdrive, which makes it suitable for folding bikes with small dia wheels. ...
by Retrorockit
Aug 06 2019 10:22am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: Q Factor offset and potential fixes

Thanks for posting those numbers. The RH Bafang crank is exactly what I'm running on my TSDZ2 bike. I switched to Shimano cranks on my BBSHD to get 175mm cranks, so my pedal strike situation is worse due to that also. Do you have the normal older TSDZ2 or the new narrow version? I've noticed that s...
by Retrorockit
Aug 05 2019 8:22pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: Q Factor offset and potential fixes

I have been obsessing over Q Factor for some time now. I bought some replacement cranks and measured against the bundled TSDZ2 cranks. Here are the results for my bike with bottom bracket width 70mm. Original TSDZ2 crank arms (edited to make clearer) 206mm (offset 26mm to the right) Shimano crank a...
by Retrorockit
Aug 02 2019 10:25am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5953
Views: 498696

Re: New "TSDZ2 Torque Sensor Central Motor"

Hi, I live in the UK and the frame clamp has just fractured (the clamp that attaches to the chainstay triangle behind the bottom bracket), I think because the bolt wasn't really long enough. Where can I get a new one? Spares are not freely available here. I don't think you can buy it as a spare par...