Search found 30 matches

by Michael B
Jan 31 2021 6:29pm
Forum: EBike General Discussion
Topic: Durable 10 speed cassette and chain?
Replies: 21
Views: 597

Re: Durable 10 speed cassette and chain?

I think you are on the right track using the 48T narrow wide. I just used what I had when installing my mid drive (42T steel chainring) to see how it went and quickly realised I wanted a higher cruising speed without using the two smallest cassette cogs. I did the sums and changed to a flat aluminiu...
by Michael B
Jan 13 2021 5:29pm
Forum: EBike Non-hub Motor Drives
Topic: TSDZ2 frame specs?
Replies: 5
Views: 430

Re: TSDZ2 frame specs?

Mine was bought in the middle of 2019 so think is still what anyone is getting now. At the yellow line the chainstays are 70 mm across to the outside edges and look to be symmetrical on that cyclocross frame. Photo is taken from the top (obviously) but also slightly forward. Trying to show that ther...
by Michael B
Jan 12 2021 11:13pm
Forum: EBike Non-hub Motor Drives
Topic: TSDZ2 frame specs?
Replies: 5
Views: 430

Re: TSDZ2 frame specs?

This is the only one I ever found.
I added the 130mm dimension.

Have you seen the TSDZ2 fitting promo video?
https://www.youtube.com/watch?v=NveONkinTb4
by Michael B
Jan 08 2021 11:29pm
Forum: EBike Non-hub Motor Drives
Topic: Will TSDZ2 or BBS02 fit on this bike?
Replies: 10
Views: 722

Re: Will TSDZ2 or BBS02 fit on this bike?

Looking at those dimensions I would think a BBS01 would bolt straight up so if a standard BBS02 is the same it should fit too.
by Michael B
Jan 06 2021 7:23pm
Forum: EBike Non-hub Motor Drives
Topic: Will TSDZ2 or BBS02 fit on this bike?
Replies: 10
Views: 722

Re: Will TSDZ2 or BBS02 fit on this bike?

BBS02 with 100mm spindle would probably be ok. Consider using two straight crank arms to bring the Q factor in as small as possible and center the whole thing according to them using spacers both sides. As little as you can get away with on the right and all the rest on the left.
by Michael B
Jan 05 2021 8:53pm
Forum: EBike Non-hub Motor Drives
Topic: Will TSDZ2 or BBS02 fit on this bike?
Replies: 10
Views: 722

Re: Will TSDZ2 or BBS02 fit on this bike?

TSDZ2 probably not. I have two of these and did a quick measure. From the centre line of the BB measure back 3". If the chainstays (outside) are more than 3" across at this point it won't fit as intended. It will need to be offset to the right which is usually detrimental to the chain line...
by Michael B
Jan 03 2021 7:58pm
Forum: EV Business World
Topic: Will the Nissan Leaf survive ?
Replies: 34
Views: 2527

Re: Will the Nissan Leaf survive ?

Balmorhea wrote:
Jun 04 2020 2:02am
The 240Z would have been a great EV. That is, if it hadn't been propelled by incinerating future generations.
I hope the upcoming 400z Proto gets some EV treatment eventually. Maybe PHEV.
by Michael B
Jan 01 2021 6:44pm
Forum: EBike General Discussion
Topic: Middrive e bike v. car drag race
Replies: 103
Views: 3003

Re: Middrive e bike v. car drag race

The only one I think is useless junk is the TSDZ2. I expect there are 10s of 1000s of these in circulation, particularly in China where the adult population weigh less (per person). Certainly the TSDZ2 hasn't been engineered for weighty westerners who then choose to fit them to full suspension moun...
by Michael B
Nov 12 2020 2:31pm
Forum: General Discussion
Topic: What is happening with the forum this week?
Replies: 33
Views: 1309

Re: What is happening with the forum this week?

Yep. Been ok the last few days. Thanks.
by Michael B
Nov 09 2020 8:04pm
Forum: General Discussion
Topic: What is happening with the forum this week?
Replies: 33
Views: 1309

Re: What is happening with the forum this week?

Been happening for over a week but does connect sometimes, like now.
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This site.PNG (70.54 KiB) Viewed 692 times
by Michael B
Oct 19 2020 7:42pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2643

Re: Split ebike battery

In my 13s3p triangle example earlier I planned it out beforehand as best I could. I wanted to use the pre-formed nickel (with slits) to make the spot welding process less fiddly. In my low amp application I still wanted to have at least two serial connections between each trio of parallel cells. I w...
by Michael B
Oct 17 2020 6:53pm
Forum: EBike Build Threads
Topic: Mobility Trike Build With Coaster Brake
Replies: 11
Views: 724

Re: Mobility Trike Build With Coaster Brake

The torque PAS is working out great, and one of my rewards for doing this project was the chance to experience the torque PAS during my preliminary tests. I'm even thinking about putting a 48v TSDZ2 with a throttle on one of my trikes in place of the current Bafang BBS02. Despite the oh so regular ...
by Michael B
Oct 13 2020 4:10pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2643

Re: Split ebike battery

That Malectrics spot welder is the one I bought. It worked fine for me. As an example this is the 18650 (LG MH1 - 3200 mAh) 13s3p triangle shape I made. Bluetooth BMS (~150 x 65 x 12mm) sits along the top where it says 142. You should be able to come up with something in 52V flavour that will fit. 1...
by Michael B
Oct 12 2020 2:32am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2643

Re: Split ebike battery

Play around with this battery shape configurator.

https://e4bike.ru/page/battery-shape-co ... 6336197183
by Michael B
Oct 11 2020 6:22pm
Forum: EBike General Discussion
Topic: A new 700C hybrid 'city-bike' build w TSDZ2
Replies: 25
Views: 1407

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

Just weighted my bike (well me then me holding the bike). Difference was 17.8 kg, so just over 39 lbs. Includes mobile phone and lights on the bike, 13s3p shrink wrap battery, but no water. I actually put my batteries together. I've made three. 13s3p in 13x3 oblong configuration. 2nd hand LG MJ1 cel...
by Michael B
Oct 10 2020 4:05am
Forum: EBike General Discussion
Topic: A new 700C hybrid 'city-bike' build w TSDZ2
Replies: 25
Views: 1407

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

Quite right. I guess the other factor will be how much clearance there is between the dished 42 you have now and the chain stay, and if you go bigger and dished is there enough clearance? I changed my cassette too and the rear derailleur won't work with the 40 or the 35 (they are still clean) but it...
by Michael B
Oct 10 2020 2:02am
Forum: EBike General Discussion
Topic: A new 700C hybrid 'city-bike' build w TSDZ2
Replies: 25
Views: 1407

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

Put the original 13-26 cassette back on. :)
by Michael B
Oct 09 2020 10:15pm
Forum: EBike General Discussion
Topic: A new 700C hybrid 'city-bike' build w TSDZ2
Replies: 25
Views: 1407

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

The experts are probably going to tell you that the 11 cog on the cassette isn't going to last so it may still be an option to reconfigure the cassette and move the 11 to the inside behind the 28 to get the 13, 15, 17 further out. On the flat you probably want to set it up so you spent a lot of time...
by Michael B
Oct 06 2020 6:54am
Forum: EBike General Discussion
Topic: bbs02 - what size chainring for my commuter?
Replies: 54
Views: 3481

Re: bbs02 - what size chainring for my commuter?

I'm using a 54T chain ring on my mid drive kit ebike. While I initially looked at the BBS02 in the end I discovered the TSDZ2 and went with that because of the BB torque sensing feature. I haven't fitted the throttle and just set the desired assist level when turning on and then let gear selection, ...
by Michael B
Jan 23 2020 3:39am
Forum: Motor Technology
Topic: Tsdz2 firmware open source adapted to vlcd5, vlcd6 and xh18
Replies: 1742
Views: 210591

Re: Tsdz2 firmware open source adapted to vlcd5, vlcd6 and xh18

Over the weekend i could test my software changes a bit more and finetuned the values. Think it is good now, so please give it a try. If you pedal slower than 15 revolutions per minute (4 seconds for one revolution) the motor stops assisting. Feels good to me, so please give it a try with the lates...
by Michael B
Jan 20 2020 3:50am
Forum: Motor Technology
Topic: Tsdz2 firmware open source adapted to vlcd5, vlcd6 and xh18
Replies: 1742
Views: 210591

Re: Tsdz2 firmware open source adapted to vlcd5

Actually I rechecked this today and I need to correct that. At 35-40 kph at moderate cadence and assist I get more like one full rotation. Yours looks more than that. I'm using a 54T narrow wide chainring. When changing down and slowing to a stop I get virtually no over run. The other day I must ha...
by Michael B
Jan 18 2020 3:55pm
Forum: EBike Non-hub Motor Drives
Topic: Kepler Friction drive comes of age.
Replies: 409
Views: 88759

Re: Kepler Friction drive comes of age.

Find a 140kv or lower motor. Flipsky have one that will suit that is a 6354 size. I presume you have 20A cells in that 13S1P pack. VESC recommends a max of 12S however the components are rated at 60v so it should be ok. Thanks. So the 140KV Motor is actually H6368 which is tight but should still ju...
by Michael B
Jan 17 2020 9:17pm
Forum: EBike Non-hub Motor Drives
Topic: Kepler Friction drive comes of age.
Replies: 409
Views: 88759

Re: Kepler Friction drive comes of age.

I really like the look of this for low assistance on an old 2006 vintage CF road bike I have.
Would prefer to use one with a 13s1p 48 volt 18650 battery as that's the voltage my other batteries and chargers are.
I'm a bit confused about what motor might be a possible candidate for this or not.
by Michael B
Jan 16 2020 3:56am
Forum: Motor Technology
Topic: Tsdz2 firmware open source adapted to vlcd5, vlcd6 and xh18
Replies: 1742
Views: 210591

Re: Tsdz2 firmware open source adapted to vlcd5

famichiki I saw your video. The amount of over run you are getting seems excessive I am using the Ackmaniac version on VLCD5 and I get about half a turn (180 degrees) of over run when I stop pedalling. Thanks for the info :thumb: Actually I rechecked this today and I need to correct that. At 35-40 ...
by Michael B
Jan 16 2020 3:39am
Forum: Motor Technology
Topic: Tsdz2 firmware open source adapted to vlcd5, vlcd6 and xh18
Replies: 1742
Views: 210591

Re: Tsdz2 firmware open source adapted to vlcd5

This? Ackmaniacs version uses motor current rather than battery current.

https://github.com/AckmaniacSoftware/TS ... rk/members

I'm using it with original VLCD5 display. I like it but I'm using only on the road, not extreme mountain biking.