Search found 61 matches

by minimum
Feb 07, 2018 12:14 pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

DingusMcGee wrote:
Feb 06, 2018 8:22 am
To begin with the above assertion by minimum is false. Thru bolts do add stiffness to the floppy hinge setup in which the motor is fastened to the motor frame side plates.
I thought we were talking about stock ("new style") cyclone mounts.
On your mounts the difference is obvious.
by minimum
Feb 02, 2018 3:14 pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

Left side (that thin bent one) mount needs to be between two nuts (large thin toothed one) on BB. I used one from my old BB that came off when installing Cyclone. That way you can control how far the mount sits on BB and keep it flexing under load. In theory it controls angle between motor and BB ax...
by minimum
Feb 02, 2018 11:48 am
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

Thank you for the prompt response. I will try to add spacers at point 1.the alignmrnt is straight. I think I will stiffen the motor mount If sprocket and motor cog line up and it still throws off the chain then I can think of another 3 reasons: 1. Chain tensioner is not aligned or loose (laterally)...
by minimum
Feb 01, 2018 12:01 pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

Good way to check motor chain(-rings) alignment is with the chain off. Press ruler to the side of chainring and check whether there will be a cap between ruler and freewheel cog or between ruler and front edge of chainring. In first case, there's also possible to make small adjustments by releasing ...
by minimum
Jan 31, 2018 12:59 pm
Forum: Motor Technology
Topic: build your very own Lebowski controller !
Replies: 327
Views: 37780

Re: build your very own Lebowski controller !

progrock wrote:
Jan 30, 2018 9:35 pm
EDIT: ok, after 100 pages of the cyclone thread, finally found it, looks like it's a 6 pole, which is what I was expecting...
That cyclone motor has 8 magnets on rotor and 12 stator slots, which should make 4 pole pairs.
by minimum
Jan 18, 2018 12:11 am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 70
Views: 1983

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

Solderable "dummy pins" (from 2.54mm male-male SIL headers) to conserve PCB space?
by minimum
Jan 12, 2018 11:37 am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 70
Views: 1983

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

Gate drivers on separate PCB, on top (or underneath, depending on the POV) of FET PCB?
by minimum
Jan 06, 2018 2:14 am
Forum: Large EV General Discussion
Topic: ATV conversion (mostly done)
Replies: 11
Views: 446

Re: ATV conversion (mostly done)

Look for 3D printer parts stores - some bed heaters for printers are paper thin. 12 VDC version are most common, 24VDC less common and 240VAC are rare. They come with thermistor attached and should have some kind of additional regulation or it will cook your battery. https://www.robotdigg.com/produc...
by minimum
Jan 03, 2018 1:56 pm
Forum: E-Bike Technical
Topic: Using bicycle's frame as heatsink for the Phaserunner
Replies: 37
Views: 1545

Re: Using bicycle's frame as heatsink for the Phaserunner

Amec Thermalsol makes really "cool" flat heat pipes, originally intended for LED lights. They are really flat (from 1,2 up to 2,5mm), quite easily bendable and have ridiculously low Rth ( thermal resistance ). Farnell used to carry these for decent price but they seem to have discontinued and now a...
by minimum
Dec 18, 2017 12:45 pm
Forum: E-Bike General Discussion
Topic: Winterized
Replies: 66
Views: 7996

Re: Winterized

DrkAngel wrote:
Dec 18, 2017 7:47 am
LEDs are 20% efficient, so 80% heat.
If light gets trapped inside glove then it eventually will be converted to heat as well. So 100% efficient in this application.
by minimum
Nov 11, 2017 2:03 am
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

Usually for these controllers there's to-92 case voltage regulator which is capable of putting out up to 100mA.
Technically it is possible to replace it with to-220 one which are usually capable 1-1,5A with cooling.
by minimum
Nov 08, 2017 12:43 pm
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 112
Views: 5971

Re: Another SMD lebowski PCB

whereswally606 wrote:page one post one
I guess it was too obvious. But thanks.
by minimum
Nov 07, 2017 1:00 pm
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 112
Views: 5971

Re: Another SMD lebowski PCB

Can you post dimensions for SMT and TH PCB's?
by minimum
Nov 03, 2017 11:36 am
Forum: Battery Technology
Topic: Spray foam to secure batteries?
Replies: 10
Views: 473

Re: Spray foam to secure batteries?

I used 2-part silicone; 37ShA hardness (soft pencil eraser). While it weights more and is probably more expensive, it's more durable and will not stick permanently to most surfaces - I can cut my battery apart again if there's need for that.
by minimum
Nov 02, 2017 1:20 pm
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 112
Views: 5971

Re: Another SMD lebowski PCB

whereswally606 wrote:1) a kit containing all the parts for making a Lebowski bob carter brain board + PCB for about £25

or

2) a fully made brain board. more like £50 or more cause I don't have the experience to know how much this might cost yet.
I'm definitely interested, in either case.
by minimum
Oct 28, 2017 1:00 am
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

flat tire wrote:In other news I finally got this thing working sensorless with my powervelocity. It's working great and there's plenty of torque even from a dead stop.
Any changes/modifications needed for that? How is the takeoff from stop? How is upper half of RPM, no sputtering/smooth as lower end RPM?
by minimum
Oct 15, 2017 7:41 am
Forum: Battery Technology
Topic: If you are building packs today, which cells to choose?
Replies: 73
Views: 5029

Re: If you are building packs today, which cells to choose?

Hillhater wrote: Yes, you are wrong.!
1C discharge would be 3.5amps ..
Right :oops:

But 0,5C charge would be 1,75A which is still over rated current.
by minimum
Oct 15, 2017 5:46 am
Forum: Battery Technology
Topic: If you are building packs today, which cells to choose?
Replies: 73
Views: 5029

Re: If you are building packs today, which cells to choose?

Pajda wrote:0,5C charge and 1C discharge.
...
The biggest dissapointment for me are Samsung 30Q and 35E where both of them were practicaly dead after finished 500 cycles.
Correct me if I'm wrong here but 1C discharge for 35E would be ~35A which is about 3,5 times their rated discharge current.
by minimum
Sep 28, 2017 12:54 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Motor sputter at higher RPMs...
Replies: 63
Views: 2419

Re: Motor sputter at higher RPMs...

Not surprising, field weakening shouldn't work on a non true FOC controller, that is why I am a bit upset with these misleading options on the app. field weakening means the controller is FOC, and these controllers are not sensorless vector control FOC... the ASI Grin 12FET looks promising, but it ...
by minimum
Sep 23, 2017 2:05 pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

Gman..after double checking I just discovered that the motor driven sprocket doesnt line up with the 48T outer chainring. Its off just enough to make the chain come off whenever the motor is engaged. So I need to actually slide the whole crankset assembly outward about 4mm in order to get the chain...
by minimum
Sep 19, 2017 10:47 pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

erpm = pole pairs * rpm the cyclone has 12 magnets or 6 pole pairs. My controller supposedly does 50k+, maybe 65K erpm or 8,300+ rpm. The motor is like 50KV afaik so I shouldn't be exceeding that. It looks like the Astroflight 3220 would be a badass motor. Not sure which controller I'd use though. ...
by minimum
Sep 13, 2017 12:52 pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

Which wires did you use the pullup resistor on? the halls signal wire? Any chance of doing a small napkin schematic? Soldered directly on the halls' PCB. Outer pins are vcc+ and signal (middle one is GND), so I soldered 1/4W resistor on the bottom/tracks side, so that resistor's body is parallel to...
by minimum
Sep 13, 2017 11:04 am
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

How hard was to set the halls for the controller? I am thinking about the 8kW one for my trike. I followed the chart diagram posted here in ES (ES wiki probably). It was a 1st time for me, so it's hard to comment. Around 10-12th time was the hit :) With 3kW motors, there's inherent flaw/quirk: hall...
by minimum
Sep 13, 2017 10:03 am
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

What cog are you on when at top speed? My eBike on 3kW hits its 70kph on the 15T cog (8th gear, 10 speed cassette), anything smaller it doesn't go any faster, unless I am on a downhill. Last/smallest one. If I counted right it's 14T. You're likely right about the controller and it's effects on perf...
by minimum
Sep 12, 2017 10:54 pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 2856
Views: 216519

Re: new cyclone 3000 w mid-drive kit?

ebike11 wrote:Hi..what gearing are you running?
Motor to chainring? And chainrung to rear cassette?
Motor stock 14T, driven chainring 48T. 40T to rear 7-speed