Search found 167 matches

by Frank
Apr 04 2020 3:01pm
Forum: Items for Sale - New
Topic: N.E.S.E. the no solder module
Replies: 362
Views: 54291

Re: N.E.S.E. the no solder module

Great info - thanks for the link. I'm leaning towards the 21700 format at this point and like the granularity of the smaller cells.
by Frank
Apr 04 2020 9:23am
Forum: Items for Sale - New
Topic: N.E.S.E. the no solder module
Replies: 362
Views: 54291

Re: N.E.S.E. the no solder module

Specifically I'm wondering about button-top versus flat-top; do they both work?
by Frank
Apr 01 2020 9:28am
Forum: Items for Sale - New
Topic: N.E.S.E. the no solder module
Replies: 362
Views: 54291

Re: N.E.S.E. the no solder module

Please excuse my ignorance about these smaller batteries, but does this design accommodate any/all brands? I guess I don't understand if there's small differences between different manufacturers' offerings which might influence how they fit in the holder. I need to make a replacement pack for my e-b...
by Frank
Mar 24 2020 10:30am
Forum: E-Bike General Discussion
Topic: Set a World Record
Replies: 22
Views: 850

Re: Set a World Record

What if you repurposed a hub motor as a mid-drive? I've seen pics of this but that would give you some gearing flexibility.
by Frank
Mar 18 2020 9:26am
Forum: Battery Technology
Topic: Test a battery pack. How can i easily create a high amp load?
Replies: 15
Views: 800

Re: Test a battery pack. How can i easily create a high amp load?

^^^

Great idea if it will accept the input voltage.
by Frank
Mar 18 2020 6:43am
Forum: Battery Technology
Topic: Test a battery pack. How can i easily create a high amp load?
Replies: 15
Views: 800

Re: Test a battery pack. How can i easily create a high amp load?

Maybe try some incandescent light bulb(s) but a small heater might be better (depends on how much load you want to create).

A 1500 watt heater (or toaster) draws about 12-13 A at 120V (mental arithmetic) so at 60V would be half that.

Someone else want to check my numbers please?
by Frank
Mar 18 2020 4:53am
Forum: Battery Technology
Topic: Test a battery pack. How can i easily create a high amp load?
Replies: 15
Views: 800

Re: Test a battery pack. How can i easily create a high amp load?

What voltage? Electric heater controlled via contactor is one possibility.

Sent from my SM-T380 using Tapatalk

by Frank
Mar 13 2020 9:49am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Buell racebike build
Replies: 32
Views: 7235

Re: Electric Buell racebike build

So, any updates?
by Frank
Mar 08 2020 6:06am
Forum: E-Bike General Discussion
Topic: Set a World Record
Replies: 22
Views: 850

Re: Set a World Record

The ECTA is a sanctioning body for records run at ECTA venues; they cannot and do not sanction "world records". By all means I recommend anyone interested try it out, it is a lot of fun. (Disclosure: I am the EV inspector, timer and one of the bike inspectors for the Loring Timing Association (LTA) ...
by Frank
Mar 06 2020 8:54am
Forum: Motor Technology
Topic: Parametric axial flux YASA model
Replies: 2
Views: 490

Re: Parametric axial flux YASA model

Nice job! I'm learning Fusion 360 too, the parametric features are powerful.
by Frank
Mar 04 2020 9:36am
Forum: General Discussion
Topic: Electric Racing Chainsaw Build, Help Please
Replies: 124
Views: 3349

Re: Electric Racing Chainsaw Build, Help Please

Interesting thread.... I like the idea of rigging up some sort of prototype, even if it's bench mounted (feed the wood to the saw, not the other way around) in order to get some data. A cheaper brushed DC motor and controller could get you a lot of data and might allow better insight into what's rea...
by Frank
Feb 13 2020 2:57pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Suzuki GSX-R e899 K2
Replies: 432
Views: 69675

Re: Suzuki GSX-R e899 K2

^^ Correct. The generally accepted rule-of-thumb is that it takes about 200 hp to go 200 mph in a bike with reasonable aerodynamics. Your output of course will be a function of voltage which is why I was interested in those curves. I searched but couldn't find anything other than "typical" values wh...
by Frank
Feb 13 2020 12:56am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Suzuki GSX-R e899 K2
Replies: 432
Views: 69675

Re: Suzuki GSX-R e899 K2

So wheelbase must be about 70"/175 cm? Do you have a link to the torque/power curve as a function of voltage?

Sent from my SM-T380 using Tapatalk

by Frank
Feb 12 2020 12:26pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Suzuki GSX-R e899 K2
Replies: 432
Views: 69675

Re: Suzuki GSX-R e899 K2

I would suggest that you try to make the centerline of the motor as close to the OEM countershaft sprocket location as you can. The longer swingarm helps a lot of course. What is the wheelbase now? Also, if there are any 1/8-mile (200 m) drag strips nearby, those might be a better venue for you. Sti...
by Frank
Feb 01 2020 9:35am
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1267
Views: 210085

Re: jonescg's NEW electric racebike BUILD thread!

What would you use for an inverter?
by Frank
Feb 01 2020 7:58am
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1267
Views: 210085

Re: jonescg's NEW electric racebike BUILD thread!

Chris, what are your plans for the bike?
by Frank
Jan 30 2020 7:36am
Forum: E-Bike Build Threads / Photos & Video
Topic: Another "stealth bomber" build.
Replies: 108
Views: 14997

Re: Another "stealth bomber" build.

I've really enjoyed reading about this build, you've had a lot of issues to resolve and have done a great job. Thanks for posting details on everything.
by Frank
Jan 18 2020 6:20am
Forum: E-Bike General Discussion
Topic: Are there any high powered 96v controllers out there
Replies: 17
Views: 1070

Re: Are there any high powered 96v controllers out there

96120? Can you tell me more about this one ( who makes it)? Which motor do you use?

Sent from my SM-T380 using Tapatalk

by Frank
Jan 11 2020 6:25pm
Forum: Motor Technology
Topic: Brushed DC for drag racing- where do I start?
Replies: 6
Views: 641

Re: Brushed DC for drag racing- where do I start?

Another resource is diyelectriccar.com, there's a Motor section, Controller section, etc. Lots of good posts there. Look for stuff by user "major" who knows quite a bit about motors.
by Frank
Jan 10 2020 8:53pm
Forum: Motor Technology
Topic: Brushed DC for drag racing- where do I start?
Replies: 6
Views: 641

Re: Brushed DC for drag racing- where do I start?

Go to Nedra . Com (National Electric Drag Racing Assoc.) to get some names, links, etc. or look up same on FB. FWIW, think of a brushed motor as a mechanical transformer : they will try to convert every volt and amp you send their way to rotary motion. The real power comes from the battery and contr...
by Frank
Jan 10 2020 1:50pm
Forum: E-Bike Technical
Topic: Crystalyte 4840 Components - upgrade?
Replies: 3
Views: 312

Re: Crystalyte 4840 Components - upgrade?

It's working now - what a great tool!
by Frank
Jan 09 2020 8:13am
Forum: E-Bike Technical
Topic: Crystalyte 4840 Components - upgrade?
Replies: 3
Views: 312

Re: Crystalyte 4840 Components - upgrade?

Thanks for the info and suggestion. I'm having trouble accessing the similator for some reason but will try later.
by Frank
Jan 08 2020 3:24pm
Forum: E-Bike Technical
Topic: Crystalyte 4840 Components - upgrade?
Replies: 3
Views: 312

Crystalyte 4840 Components - upgrade?

Hi Everyone, I'm contemplating getting my old e-bike going, it's a Phoenix II kit (IIRC) with 4840 controller and motor. Originally a 48V lead-acid system I replaced the batteries with an RC pack but have bad bricks and need to build a new pack. That got me thinking: how much can that old motor take...
by Frank
Jan 06 2020 2:38pm
Forum: Items for Sale - New
Topic: Assembled Hi-Power LiPo battery packs - any interest?
Replies: 570
Views: 118948

Re: Assembled Hi-Power LiPo battery packs - any interest?

Agreed! I was going to comment on it too, can't wait until it actually gets to run down a track somewhere.