Search found 865 matches

by Animalector
Mar 01 2018 6:04pm
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 203
Views: 36703

Re: FREY eMTB with Bafang m600 is developing with your ideas!

Yes they do. I've ridden the e8000 and it is torque sensing for sure.. same as the e6000
by Animalector
Feb 12 2018 9:19pm
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 125
Views: 17239

Re: Another SMD lebowski PCB

Nice one, looking forward to pics. I use a Stereo microscope for soldering, but all work is done by hand even down to 0603 components. The TQFP44 chip is not hard to solder by hand, use lots of flux, and a solder blob that is about 3 pins wide, then just run the iron from one side to the other, by t...
by Animalector
Feb 11 2018 10:01pm
Forum: Battery Technology
Topic: my 18650 frame pack build
Replies: 32
Views: 3945

Re: my 18650 frame pack build

looks great, nice work.

Andy
by Animalector
Jan 28 2018 11:09pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1862
Views: 226878

Re: My Bafang Ultra Mountain Bike! Frey AM1000

For torque based pedelec having the e-brake cutoff is not an absolute necessity. It's not a typical riding technique to use the brakes while pedalling under power. Sometimes you tap the brakes mid-corner for stability, and in these situations, the delay caused by the e-brake cutoff causes control is...
by Animalector
Jan 24 2018 5:43pm
Forum: Motor Technology
Topic: build your very own Lebowski controller !
Replies: 376
Views: 60876

Re: build your very own Lebowski controller !

12 FET is just 2 paralleled on the high side and two paralleled on the low side of each phase...

18 FET is 3 paralleled on the high side and 3 on the low side.. thus 6 FETs per phase X 3 phases
by Animalector
Jan 23 2018 11:32pm
Forum: Motor Technology
Topic: build your very own Lebowski controller !
Replies: 376
Views: 60876

Re: build your very own Lebowski controller !

Don't do it. Buy genuine from Digi-Key or element 14, Farnell etc. I bought China ones and they made the controller ring, and not perform correctly.

Andy
by Animalector
Jan 19 2018 7:08am
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 203
Views: 36703

Re: FREY eMTB with Bafang m600 is developing with your ideas!

What do you mean by open system? If you mean that you have the choice to build you own battery, well those 'external' battery packs are no different to an internal battery, they are still custom designed specifically for that frame/brand. External or internal I don't really care. Internal seems to b...
by Animalector
Jan 19 2018 4:16am
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 203
Views: 36703

Re: FREY eMTB with Bafang m600 is developing with your ideas!

So are you saying that bafang will supply the down tube but not an internal battery?.
by Animalector
Jan 18 2018 6:41pm
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 203
Views: 36703

Re: FREY eMTB with Bafang m600 is developing with your ideas!

Frey: what do you plan to do about the internal battery? or are you planning to make it an external battery? If it is internal, what battery pack / housing are you planning on using? is there a modular case available that will fit inside a frame? If yes, can you offer a link please? Thanks Andy Oudyn
by Animalector
Jan 17 2018 6:03pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22989

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

I was thinking exactly like that with press pins for the bottom (power board) but then the top (CPU board) would have edge clips that hold onto the sides of the PCB. Because there are no holes in the CPU board..
by Animalector
Jan 17 2018 5:29pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22989

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

If you move the tracks and make yourself some mounting holes, we could use some 3d printed PCB clips that holds the edges of the CPU board. And then a touch of silicon to hold it.

I can model some clips of you give me the board spacing, PCB thickness and hole size.
Andy
by Animalector
Jan 17 2018 5:42am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22989

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Ok good to know... I was under the impression that noise / interference would be a problem as well. So conceptually, If I keep the gate signal closely coupled with its reference (either GND for low side and phase-out for high side) by having the reference immediately below, and possibly beside as we...
by Animalector
Jan 16 2018 7:35pm
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 125
Views: 17239

Re: Another SMD lebowski PCB

just re-discovered this thread. Nice work

Andy
by Animalector
Jan 16 2018 7:29pm
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 201
Views: 22989

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

How does twisted pair compare to shielded cable (like mini coax) ???

I have been thinking about my Micro-Lebowski and could just solve all these issues if I used short pigtail leads instead of PCB traces...

Thanks
Andy
by Animalector
Jan 10 2018 4:28pm
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 203
Views: 36703

Re: FREY eMTB with Bafang m600 is developing with your ideas!

it looks dubious to me. Battery in Pic, but further down the page it has a Hailong Case pictured. Plus I hate it when they get the Part number / specs wrong.

I'll wait until I hear from Bafang or a reputable frame builder that they are available. It's no good to me without a frame anyway

Andy
by Animalector
Jan 10 2018 4:02pm
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 203
Views: 36703

Re: FREY eMTB with Bafang m600 is developing with your ideas!

Where is that from?, I've emailed Bafang Directly, as well as Frey and another couple of manufacturers they all say March / April for release. Perhaps this is just a pre-sale?
by Animalector
Jan 09 2018 8:23pm
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 203
Views: 36703

Re: FREY eMTB with Bafang m600 is developing with your ideas!

Bafang like to put their products on the website, but they're not yet available for sale. Best example is the Max Ultra 1000W drive, it seemed to me like it was online for well over a year before anything was available for purchase. Same goes for the M600, it's online already, but you can't buy one....
by Animalector
Jan 09 2018 3:43am
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 203
Views: 36703

Re: FREY eMTB with Bafang m600 is developing with your ideas!

I contacted bafang directly and was told that the frame was a one-off CNC produced frame just for the show. Shimano build an integrated battery similar to this one.. so do Bosch. In bafangs promotional material they indicated having a battery available but they must be focusing on the drive unit onl...
by Animalector
Jan 05 2018 10:34pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1862
Views: 226878

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Does the m600 have torque sensing ?? Yes it does, it's similar to the Shimano e8000 in size. The torque of the bafang is better. I can't wait to see what they can offer with the m600/m500 motors. I've got the current Bafang 350W torque sensing motor at the moment, and the motor is great, but the fr...
by Animalector
Dec 23 2017 4:33pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4481
Views: 439950

Re: Sur-Ron - New Mid drive Bike from China

Unless you're putting around at walking speed, the Sur on is going to rip up MTB trails. It doesnt have a place in a MTB park because it is not a MTB. People spend hours and hours dedicating their time to maintain these trails. There's plenty of places to ride the sur on and MTB parks is not one of ...
by Animalector
Dec 06 2017 4:39am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1862
Views: 226878

Re: My Bafang Ultra Mountain Bike! Frey AM1000

I have the bafang max 350w and in the street in assist 5 out of 5 it feels like a pedal activated throttle. Not really much in the way of torque sensing... But on level 2 and 3 it feels more like normal riding but you end up going faster then normal On the trails this effect is multiplied in the sen...
by Animalector
Dec 01 2017 6:12am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1862
Views: 226878

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Thats awesome news... Winner
by Animalector
Dec 01 2017 4:30am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1862
Views: 226878

Re: My Bafang Ultra Mountain Bike! Frey AM1000

I've heard that argument before and I agree to a point... but often the Chinese manufacturers just use machined aluminium, possibly painted, poked through a hole in the frame that may or may not have been painted. Not saying that's how these ones are, but on my bike that's what the bushing linkages ...
by Animalector
Dec 01 2017 12:58am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1862
Views: 226878

Re: My Bafang Ultra Mountain Bike! Frey AM1000

biggest issue for me is that you're paying around $3k USD (ish???) for a bike that doesn't have full bearings in the rear linkage... I mean why not use them? all this money and technology and save $3 in bearing parts? Anyways I really hope you enjoy riding it, I'm sure it's going to be a blast. I ha...