Search found 317 matches

by Triketech
Jan 16 2019 7:30pm
Forum: E-Bike Build Threads / Photos & Video
Topic: TRON e-bike
Replies: 14
Views: 1134

Re: TRON e-bike

That's pretty cool.

TRON caught my eye. My wife designed the PCB's used for lighting on the second movie, and were later used for costume lighting in a Superbowl halftime show.
by Triketech
Nov 03 2018 11:46am
Forum: E-Bike General Discussion
Topic: E-BIKE 3D PRINTED BATTERY CASE
Replies: 12
Views: 970

Re: E-BIKE 3D PRINTED BATTERY CASE

Alan B wrote:
Mar 29 2018 7:34am
Welcome to ES. Looking forward to your pics.

Ebikes handle so much better when the weight distribution is right.
That's especially true on trikes as well.
Image Image
by Triketech
Oct 30 2018 7:34pm
Forum: E-Bike General Discussion
Topic: Lightest motor for hill climbing and 135mm dropout with disk brake?
Replies: 19
Views: 985

Re: Lightest motor for hill climbing and 135mm dropout with disk brake?

MAC 10T for a 20".
Field Oriented Controller like a Phaserunner will tone it down to near silence.

This might give better detail:
http://www.triketech.com/Drivetrain/Pow ... AC-V2.html
by Triketech
Oct 23 2018 2:45pm
Forum: E-Bike General Discussion
Topic: Mac 12T and dual torque arms -> really necessary ?
Replies: 15
Views: 452

Re: Mac 12T and dual torque arms -> really necessary ?

A single TA is all you need so long as its on the cassette side.
by Triketech
Oct 16 2018 11:11am
Forum: Battery Technology
Topic: Sion Power Licerion Li-metal anode batteries
Replies: 2
Views: 341

Re: Sion Power Licerion Li-metal anode batteries

Not many ebikers are willing to pay the cost of this chemistry yet. They've still got about 15 years of R&D to amortize.
by Triketech
Oct 11 2018 10:52am
Forum: E-Bike General Discussion
Topic: Arizona Electric Bicycle Law changes (2017)
Replies: 68
Views: 3390

Re: Arizona Electric Bicycle Law changes (2017)

The only real way to lower the trike weight would be a complete rebuild from scratch. Piece by piece wouldn't be worth the effort. Not even close to cost effective to design and build a one-off e-trike, and the market isn't there for volume production just yet. Off & on between design contracts I'v...
by Triketech
Oct 11 2018 10:16am
Forum: E-Bike General Discussion
Topic: Arizona Electric Bicycle Law changes (2017)
Replies: 68
Views: 3390

Re: Arizona Electric Bicycle Law changes (2017)

Expect the escoot and ebike rental companies to raise visibility to get more ebike regs. Dallas just banned ALL MOTORIZED vehicles from parks and trails. Poorly worded law, as is the fashion. mobility scooters were not excluded, not intentionally. Glad I moved from McKinney to AZ a few years ago. R...
by Triketech
Oct 07 2018 8:26pm
Forum: E-Bike General Discussion
Topic: Motor advice for Heavy Trike
Replies: 9
Views: 428

Re: Motor advice for Heavy Trike

This setup works the best among several systems I've tried:
http://www.triketech.com/Drivetrain/Pow ... AC-V2.html
by Triketech
Sep 23 2018 11:51am
Forum: E-Bike Technical
Topic: Tilting trike pivot location
Replies: 4
Views: 263

Re: Tilting trike pivot location

When the pivot point is above the Center of Mass (COM) the rider leans into a turn, but does that by swinging their body mass to the outside of the turn, more tippy that way. Conversely moving the pivot point below the COM as a rider leans into the turn, they shift more body mass to the inside. Howe...
by Triketech
Aug 26 2018 10:58am
Forum: E-Bike General Discussion
Topic: What gauge are the throttle wires?
Replies: 4
Views: 182

Re: What gauge are the throttle wires?

FWIW.

USB cable with JST & heatshrink works very well.

If you want the best cable, look for Mil-Std M27500 grade, 22AWG, but its not cheap.
by Triketech
Aug 09 2018 3:38pm
Forum: E-Bike General Discussion
Topic: Ebike prices expected to rise? 25% tariffs.
Replies: 164
Views: 3408

Re: Ebike prices expected to rise? 25% tariffs.

wturber wrote:
Aug 09 2018 3:08pm
Depending on how the tariff is structured and enforced, it could be a benefit even for standard motors and kits sold by Grin.
Country of Origin is what it will be based on.
by Triketech
Jul 08 2018 11:34am
Forum: E-Bike Technical
Topic: 12T MAC motor and high current
Replies: 22
Views: 3183

Re: 12T MAC motor and high current

I ran a 12T for about 1000 miles at 40A, followed by about 1200 miles @ 30A, and another 500 miles @ 15A. No problems so far. At 40A it will utter some potentially self destructive sounds with an zero ramp controller that snapped to full throttle from a stop. At 40 amps (52V) it would push my 270 lb...
by Triketech
Jun 17 2018 10:56am
Forum: E-Bike General Discussion
Topic: Using a hub motor as a mid drive?
Replies: 10
Views: 626

Re: Using a hub motor as a mid drive?

That's something I've been entertaining a while myself for a stealth e-trike. With an array of torque sensing BB's, motors & FOC drivers out there it makes sense to try on a recumbent. Trikes offer some unique challenges to optimize configuration. Keeping the added drive/battery mass low with proper...
by Triketech
Jun 12 2018 9:49pm
Forum: E-Bike Technical
Topic: A few questions about e-bike motors
Replies: 9
Views: 486

Re: A few questions about e-bike motors

Motors (boosters) work best when they switch poles while powered. Full power at 0 RPM = 0 efficiency. Efficiency isn't linear to speed, more like logarithmic to speed. Depends on the motor design. No matter what booster you choose it comes with advantages and disadvantages. Efficiency, simplicity, g...
by Triketech
May 09 2018 11:23pm
Forum: E-Bike Technical
Topic: Sempu BB + cycle analyst assist not working well
Replies: 21
Views: 1107

Re: Sempu BB + cycle analyst assist not working well

After going through the settings and with help from Grin, it is working intermittently now. When I start out, the human watts will read negative for about half a block and then will suddenly kick over to positive and assist will work well until I stop. Anytime I slow down to a near stop or complete...
by Triketech
Apr 20 2018 2:10pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 4225
Views: 295641

Re: New "TSDZ2 Torque Sensor Central Motor"

Look for engine build moly grease at an auto parts store it's basically the same thing.

Lithium grease with moly.
by Triketech
Apr 10 2018 9:27am
Forum: E-Bike Technical
Topic: 2018 Torque Arm Tests, Splined Interface Design and Tabbed Washers
Replies: 135
Views: 8280

Re: 2018 Torque Arm Tests, Splined Interface Design and Tabbed Washers

Splines are on the wrong axis. Try aligning the splines with the axis of compression of the axle nuts.
by Triketech
Apr 05 2018 1:07am
Forum: E-Bike General Discussion
Topic: MAC 10T @ 36V vs 12T @ 48V??
Replies: 24
Views: 1194

Re: MAC 10T @ 36V vs 12T @ 48V??

FWIW. We have a pair of FS26 trikes. One has a 48v 30amp peak MAC 10T total weight of 250 lbs. Climbs 15% no problem, 10% with ease tops out above 28 mph. I pedal about 50% of power and it burns about 6wh/mile. The second has a 36v 15 amp peak MAC 12T weight at 210 lbs. Climbs 12% like mine does 15%...
by Triketech
Mar 04 2018 11:53am
Forum: E-Bike Non-hub Motor Drives
Topic: Tongsheng TSDZ2 operation
Replies: 6
Views: 1178

Re: Tongsheng TSDZ2 operation

I know this is a little bit of a derail, but how is the feel of the Thun/CA3/Mac compared to the Tsdz2? (or Bionx / Bosch / Shimano, if you happen to have experience with them). Simply put, superior to any other system I've tried including those you mentioned. The caveat is with the Thun. They've b...
by Triketech
Mar 01 2018 8:24pm
Forum: E-Bike General Discussion
Topic: The end of BionX?
Replies: 190
Views: 22973

Re: The end of BionX?

Actually it surprises me that they hung on as long as they did.
by Triketech
Feb 17 2018 11:00am
Forum: E-Bike Non-hub Motor Drives
Topic: Tongsheng TSDZ2 operation
Replies: 6
Views: 1178

Re: Tongsheng TSDZ2 operation

Ours had about 8-10 ft lbs of drag out of the box. Pulled the case & seal off, seal was installed correctly with enough grease. Removed seal and tested, was down to about 4-5 Ft lbs of drag. Re-installed seal and sent Grace an email who's response was "thats normal for a mid drive". My BBS02 had abo...
by Triketech
Jan 21 2018 10:25am
Forum: E-Bike General Discussion
Topic: ebike weight
Replies: 12
Views: 750

Re: ebike weight

Some folks like me tend to overbuild for what they really need only to find out after riding they rarely need the power capacity they've assembled. My HPV FS26 trike was delivered at 44 lbs. • 13 lb LiFePO4 battery • 4 lb for CA3, Phaserunner, Battery mount, throttle, Aux Pot, Lights & 8V regulator ...
by Triketech
Jan 10 2018 2:43pm
Forum: E-Bike Non-hub Motor Drives
Topic: TSDZ2 Opinions Please
Replies: 6
Views: 1302

Re: TSDZ2 Opinions Please

Tongsheng seems to have variances in production. That may include the bore centers for gear shafts. That can cause some motors to eat gears.
by Triketech
Jan 02 2018 1:14pm
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 99
Views: 10292

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

You may come from a background with a different terminology, but I've never seen "poles" meaning anything other than "magents" in a BLDC/PMSM motor. That's certainly the case for the vendors we typically use here, as well as PhaseRunner settings, Grin simulator settings, etc. Apology for the confus...
by Triketech
Jan 01 2018 11:16pm
Forum: E-Bike Technical
Topic: Bafang G310 geared hub - 11:1 reduction ratio!!!
Replies: 99
Views: 10292

Re: Bafang G310 geared hub - 11:1 reduction ratio!!!

Not sure how you're getting that. I see 16 magnet sections, so divide that by 2 and you get 8. The MAC/BMC/eZee are all 16 pole motors.. 32 magnets divided by 2. The number of magnets to pole pairs on a 3 Phase motor... When one pole pair is aligned directly with the magnet it switches to the next ...