Search found 287 matches

by StinkyGoalieGuy
May 29 2019 11:22pm
Forum: EBike Non-hub Motor Drives
Topic: Dewalt powered mid drive road bike
Replies: 6
Views: 1528

Re: Dewalt powered mid drive road bike

Very nice. So do you run the two packs in series? Do you use any kind of diode to isolate them in case the BMS trips on one of the batteries?
by StinkyGoalieGuy
Apr 12 2019 3:05am
Forum: EBike Build Threads
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 375
Views: 56622

Re: My RC Mid Drive with Single Stage Reduction

devo1223 wrote:
Apr 09 2019 8:25pm

Stinky, wouldn't it just be easier to get a TSDZ2?
That's a fair point. I guess I should read through that thread. Don't know much about that kit.
by StinkyGoalieGuy
Apr 09 2019 6:32pm
Forum: EBike Build Threads
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 375
Views: 56622

Re: My RC Mid Drive with Single Stage Reduction

I probably should test ride some newer consumer E-Bikes just to see how good a modern PAS implementation is. Maybe my opinion would change. If anyone in the South Bay area is interested in trading some riding time... :) The newer torque sensing PAS systems are very smooth. The harder you work, the ...
by StinkyGoalieGuy
Apr 08 2019 9:51pm
Forum: EBike Build Threads
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 375
Views: 56622

Re: My RC Mid Drive with Single Stage Reduction

Nice work, Bob. This would be the ultimate pedal assist if we could figure how to integrate a torque sensor.
by StinkyGoalieGuy
Apr 04 2019 4:11pm
Forum: EBike Non-hub Motor Drives
Topic: Small and big block rickshaw motors on Amazon.
Replies: 16
Views: 2777

Re: Small and big block rickshaw motors on Amazon.

Nice find! What's that black section between the core and the output shaft? Planetary gearbox? Answering my own question. If I expand out the listing, it mentions "Gear ratio: 6:1", so that must be a gearbox. I wonder if it would be easy to remove the gear reduction and that blue cover on...
by StinkyGoalieGuy
Apr 04 2019 4:05pm
Forum: EBike Non-hub Motor Drives
Topic: Small and big block rickshaw motors on Amazon.
Replies: 16
Views: 2777

Re: Small and big block rickshaw motors on Amazon.

Nice find! What's that black section between the core and the output shaft? Planetary gearbox?
by StinkyGoalieGuy
Apr 04 2019 3:44pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1272
Views: 282510

Re: Compact Field Oriented Controller, ASI + Grin, limited run

Is the 90V max of the Phaserunner a hard cutoff? If I use LiFe cells with 27 in series, once they settle to their nominal voltage of 3.3v each, that would be 89.1v. But hot off the charger, that would be 3.6v per cell giving 97.2v. My cells seem to settle down to 3.3v after about 20 minutes. Can the...
by StinkyGoalieGuy
Mar 23 2019 3:19pm
Forum: Battery Technology
Topic: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300
Replies: 22
Views: 1733

Re: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300

But then you do need to fabricate custom reverse-engineered holders to both securely clamp the packs in place, and maintaining a reliable electrical connection. I see that as being **at least** as challenging as using a much more compact enclosure for the bare cells, either bought or DIY. Thingiver...
by StinkyGoalieGuy
Mar 22 2019 5:20pm
Forum: Battery Technology
Topic: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300
Replies: 22
Views: 1733

Re: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300

So far when everyone here's talking "BMS", only talking about whatever protection circuitry Ryobi built internally to these 18V/9Ah packs right? I would think it better to strip the cells out. Building a custom enclosure to mount them securely, and the matching "jacks" for the p...
by StinkyGoalieGuy
Mar 22 2019 3:53pm
Forum: Battery Technology
Topic: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300
Replies: 22
Views: 1733

Re: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300

But I'M not following. Why would the individual BMS see 72 volts? I'm planning to keep the whole pack intact and wire them in series. Each BMS should only see 18v, right? But if one of the three decides to trip, the load (controller) drops to zero and puts the full 72v across the tripped one, which...
by StinkyGoalieGuy
Mar 22 2019 11:31am
Forum: Battery Technology
Topic: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300
Replies: 22
Views: 1733

Re: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300

Thanks, Fecter. So I need a diode that can handle at least 72volts, 45amps, assuming my max current draw will only be 45amps?
by StinkyGoalieGuy
Mar 22 2019 8:47am
Forum: Battery Technology
Topic: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300
Replies: 22
Views: 1733

Re: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300

SM, always appreciate your insight.

But I'M not following. Why would the individual BMS see 72 volts? I'm planning to keep the whole pack intact and wire them in series. Each BMS should only see 18v, right?
by StinkyGoalieGuy
Mar 22 2019 6:26am
Forum: Battery Technology
Topic: Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300
Replies: 22
Views: 1733

Ryobi Sale - hack together a 72V, 9Ah, Sony VTC6 battery for ~$300

Somebody please help punch some holes in my idea here. Home depot has the these 18Volt 9aH batteries for $140 for a 2 pack: https://www.homedepot.com/p/RYOBI-18-Volt-ONE-Lithium-Ion-LITHIUM-HP-9-0-Ah-High-Capacity-Battery-2-Pack-P168/304740785 According to the safety data sheet, it uses Sony US18650...
by StinkyGoalieGuy
Jan 02 2019 1:31pm
Forum: Battery Technology
Topic: 3D Printed Cell Holders
Replies: 9
Views: 2603

Re: 3D Printed Cell Holders

Hey, this looks awesome! Thanks so much for you contribution to the DIY battery community!
by StinkyGoalieGuy
Nov 09 2018 1:00pm
Forum: Items for Sale - Used
Topic: want to sell as a lot , BMC, Lyen, All Cell
Replies: 5
Views: 1231

Re: want to sell as a lot , BMC, Lyen, All Cell

Payload wrote:
Nov 09 2018 12:06pm
Best Offer for local pick up .
You might want to add your location.
by StinkyGoalieGuy
Nov 01 2018 11:33pm
Forum: EBike Reviews & Testing
Topic: Grin Phase Runner / CA3 and BBSHD
Replies: 192
Views: 54365

Re: Grin Phase Runner / CA3 and BBSHD

For 74V, just set the Kp and Ki values to 1 and 10 (see image). You can use larger values for lower voltages. If by "judder" you mean where hitting throttle causes the motor to spin an full throttle and take up the slack in the drive train too fast, then user endrew's settings work great....
by StinkyGoalieGuy
Oct 25 2018 11:51am
Forum: Battery Technology
Topic: Lithium ion EGO 56v pack vs LiFePo4 at 30 amps
Replies: 7
Views: 857

Re: Lithium ion EGO 56v pack vs LiFePo4 at 30 amps

Or you could use these instead: https://www.ebay.com/itm/Brand-New-A123-AHR32113-32113-4500mah-3-2v-High-Power-Lifepo4-Battery/113276833104?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20160323102634%26meid%3Ddc3a5d129de5418bb88cce65c803fa8b%26pid%3D100623%26rk%3D1%26rkt%3D3%26sd%3D26346...
by StinkyGoalieGuy
Oct 24 2018 9:43pm
Forum: Battery Technology
Topic: Lithium ion EGO 56v pack vs LiFePo4 at 30 amps
Replies: 7
Views: 857

Re: Lithium ion EGO 56v pack vs LiFePo4 at 30 amps

LiFePo4 A123 AHR32113 ultra B cells 4500mah each. These big cells are capable of 100 amp discharge over and over and 6c charge rate. The 30 amps we intermittently throw at them while riding is nothing and won’t even warm them up. Downside is one side is aluminum and that’s hard to spot weld to. The...
by StinkyGoalieGuy
Jun 14 2018 7:19pm
Forum: EBike Reviews & Testing
Topic: Grin Phase Runner / CA3 and BBSHD
Replies: 192
Views: 54365

Re: Grin Phase Runner / CA3 and BBSHD

If anyone is interested This is my current CA setup file: https://app.box.com/s/9r7qk3z4kyd1dondzlg3kp0of7w9606f This is my current PhaseRunner setup: https://app.box.com/s/si3xocyxnzkcxk30kzk2scr5jrb8tohc I'm running 21S Lithium Ion with a bit of field weakening. Still needs tweaking but these shou...
by StinkyGoalieGuy
Jun 03 2018 11:28pm
Forum: Items for Sale - New
Topic: Stealth Frames
Replies: 7
Views: 1473

Re: Stealth Frames

Where on the west coast are you located?
by StinkyGoalieGuy
Apr 30 2018 12:30pm
Forum: Items for Sale - Used
Topic: Tesla Cells for sale as wrapped or welded packs
Replies: 52
Views: 8554

Re: Tesla Cells for sale as wrapped or welded packs

Can you give an accurate outside diameter using calipers of the wrapped cells? I want to make sure they will fit my holders.
by StinkyGoalieGuy
Apr 05 2018 5:50pm
Forum: EBike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1448
Views: 237611

Re: Dave's 80:1 RC mid drive kit build log

Yes, 25R cells Are you sure? The 25r cells are rated as 2.5Ah. So the total capacity of the pack would have to be a multiple of 2.5. You wouldn't be able to get a 6Ah pack. I think Luna was making their mini cube batteries with either Panasonic GA cells or Samsung 30Q. Either way, just be careful n...
by StinkyGoalieGuy
Apr 05 2018 5:19pm
Forum: EBike Non-hub Motor Drives
Topic: Dave's 80:1 RC mid drive kit build log
Replies: 1448
Views: 237611

Re: I am ready

The batteries are Luna Cycle 52V, 6AH - 3 of them wired in parallel for both power and charge. Should be capable of feeding up to 150 amps to tap the full potential of the drive. The triangle is tight with only room for two so the third is under the seat. Wiring is all 10g silicone insulation flexi...
by StinkyGoalieGuy
Feb 19 2018 9:46pm
Forum: EBike Reviews & Testing
Topic: Grin Phase Runner / CA3 and BBSHD
Replies: 192
Views: 54365

Re: Grin Phase Runner / CA3 and BBSHD

Marin wrote:
Feb 19 2018 9:38pm
apparently not as I just tried and it says invalid file type, I'm going to send a pm with my email, mind sending them there?
yeah, no problem.
by StinkyGoalieGuy
Feb 19 2018 9:18pm
Forum: EBike Reviews & Testing
Topic: Grin Phase Runner / CA3 and BBSHD
Replies: 192
Views: 54365

Re: Grin Phase Runner / CA3 and BBSHD

Marin wrote:
Feb 19 2018 8:12pm
Here in the thread seems good to me,
Can you actually attach files to posts here? I know you can attach images, but the PhaseRunner config file is of type .xml and the CAV3 config file is a HEX file.