Search found 79 matches

by Archer321
Sep 28 2019 8:12pm
Forum: Motor Technology
Topic: Ashwoods Axial Flux motors
Replies: 6
Views: 2947

Re: Ashwoods Axial Flux motors

Too bad they have that splined shaft...
I'll keep an eye on them anyway
by Archer321
Sep 28 2019 6:09pm
Forum: Motor Technology
Topic: Over speed Pmac motor (also a.c. induction)
Replies: 5
Views: 215

Re: Over speed Pmac motor (also a.c. induction)

If your pmac is more powerful than you need but running too low a speed, you should be able to increase the speed and lower the overall power of the motor by increasing the airgap between the stator and rotor. Not too hard on an axial flux motor, more difficult on a radial flux Not sure which type y...
by Archer321
Aug 16 2019 6:19pm
Forum: Motor Technology
Topic: Legit electric motor technology breakthrough?
Replies: 19
Views: 1699

Re: Legit electric motor technology breakthrough?

I see plenty of detractors on here...

Why is everyone so cynical?

Perhaps it's just the nature of internet interactions...

I'm just going to wait and see and hope for something interesting.
by Archer321
Aug 13 2019 11:11pm
Forum: Motor Technology
Topic: Legit electric motor technology breakthrough?
Replies: 19
Views: 1699

Re: Legit electric motor technology breakthrough?

I know we've all seen lots of hype and empty promises over the years, but...
PhotoPictureResizer_190813_230832896_crop_879x1128.jpg
PhotoPictureResizer_190813_230832896_crop_879x1128.jpg (127.68 KiB) Viewed 1213 times
by Archer321
Aug 11 2019 12:42pm
Forum: Motor Technology
Topic: Solar Cars and the HPM3000B
Replies: 5
Views: 303

Re: Solar Cars and the HPM3000B

I enjoyed reading your instructable. I especially liked the insight about not carrying more battery than your allowed solar array can actually charge. Not an obvious thing at first glance, but an extremely valid consideration. If you want to continue this sort of design challenge now that you're out...
by Archer321
Aug 10 2019 2:06pm
Forum: Motor Technology
Topic: Legit electric motor technology breakthrough?
Replies: 19
Views: 1699

Combined radial and axial flux motor!



Pretty cool yet almost obvious idea...
by Archer321
Aug 09 2019 3:19pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 735
Views: 33952

Re: APL's DIY axial-flux motor

:bigthumb:
by Archer321
Jul 16 2019 7:31am
Forum: Battery Technology
Topic: Lead acid anyone?
Replies: 51
Views: 2435

Re: Lead acid anyone?

The lad found 4 batteries so we could run 48 volt. Won the student division at Portland International Raceway finals with a win in the long track, 2nd in short track (wrong gear darn it), and blew all away in the sprint/drags for a dominant win (including adult division). Ran with a Lynch motor. Th...
by Archer321
Jul 15 2019 8:44pm
Forum: Battery Technology
Topic: Lead acid anyone?
Replies: 51
Views: 2435

Re: Lead acid anyone?

My son and I were avid participants in the Oregon/Washington Electrathon and are now planning on reentering. I know this is off topic...sort of...but I want to connect on this level as well...expecially if in our region. I also use SLA for my ezip 750 scooter and am looking for lead battery technol...
by Archer321
Jul 13 2019 8:37pm
Forum: Battery Technology
Topic: Lead acid anyone?
Replies: 51
Views: 2435

Re: Lead acid anyone?

I'm still on lead acid. It sucks but the total cost to switch to lithium is still too much. I'm about to buy new sla's again as I'm pedaling too much. I get about 2 years out of the cheap ones. The higher quality sla's cost too much now so I use the cheap ones and they don't last as long. What sla'...
by Archer321
Jul 04 2019 6:30pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 612

Re: 1kwh pack recommendation

Rassy wrote:
Jul 04 2019 4:56pm

My best suggestion is to ask him via email, and even explain why it is important to you, as he might be able to accommodate you if his current labeling isn't sufficient.

PINGPING227@Hotmail.com

Perhaps someone with a fairly new Ping battery will respond.
An excellent suggestion.
I shall do so.
by Archer321
Jul 04 2019 4:10pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 612

Re: 1kwh pack recommendation

Checking out the Ping battery site. Their 48v 20ah pack looks pretty good but I don't see any markings on it anywhere. Maybe they just didn't show them in their pics. I am required to have factory markings in place on my race batteries to show what they are (size, chemistry, etc.)and who made them. ...
by Archer321
Jul 03 2019 7:56pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 612

Re: 1kwh pack recommendation

Rassy wrote:
Jul 03 2019 7:44pm
Those "Topband" cells do look interesting. So if you put 12 of them in series you would have a nominal 36V 25AH battery. In your estimate did you include shipping, a BMS, and a charger?
Shipping, yes. Bms and charger, no.

Still have to research those.
by Archer321
Jul 03 2019 6:46pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 612

Re: 1kwh pack recommendation

Well after doing some internet snooping, it appears that lifepo4 packs may be cheaper to build. Even with their greater weight than lipo they are significantly lighter than my lead-acid batteries. I can put together a 960wh pack of "Topband" 25ah cells for about $480. The cells are listed as "new-op...
by Archer321
Jul 02 2019 6:17am
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 612

Re: 1kwh pack recommendation

j bjork wrote:
Jul 02 2019 2:13am
I think lipos are considered to have a nominal voltage of 3,7V? But at 3,7V they are near empty.
But when calculating Wh you are using nominal V x Ah right?
That's the way I understand it.
Got a specific recommendation?
by Archer321
Jul 01 2019 6:31pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 612

Re: 1kwh pack recommendation

And I suppose there's the whole question of using 92 or so cylindrical cells vs fewer of the prismatic cells.
More stuff of which I have no idea...

92 of anything seems like a pain...
by Archer321
Jun 30 2019 12:14am
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 612

Re: 1kwh pack recommendation

Please tell us more of the use of these battery . For what use please ? Yes tell us everything. Everything. Electrathon racing is a type of electric efficiency competition. Small, lightweight, generally 3 wheeled vehicles compete for an hour to see who can go the farthest on a battery capacity of 1...
by Archer321
Jun 29 2019 7:11pm
Forum: Battery Technology
Topic: 1kwh pack recommendation
Replies: 14
Views: 612

1kwh pack recommendation

So if anyone remembers from my "Lead acid anyone?" thread, I am involved in Electrathon racing. For the last four years I have been competing exclusively in the lead acid class but am now contemplating a change to lithium. I have a new car design in the works that would really be much more feasible ...
by Archer321
Jun 14 2019 8:37pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 735
Views: 33952

Re: APL's DIY axial-flux motor

APL wrote:
Jun 14 2019 1:50pm
Plans are often foiled by reality.
That is an excellent quote.
I think I'll steal it.
by Archer321
May 28 2019 11:52pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 735
Views: 33952

Re: APL's DIY axial-flux motor

Well I'm excited about it.
When's the test run?
by Archer321
Apr 24 2019 6:15pm
Forum: Motor Technology
Topic: Controller suggestions??
Replies: 60
Views: 2711

Re: Controller suggestions??

So I have resolution... PV told me to open the case, pull the board, and cut a connection at a particular spot. Screenshot_20190423-222028~2-415x440.png After that the motor runs fine. I was not particularly excited to crack open a magic box I had just paid for, but he's going to send me a Bluetooth...
by Archer321
Apr 22 2019 1:57pm
Forum: Motor Technology
Topic: Controller suggestions??
Replies: 60
Views: 2711

Re: Controller suggestions??

Thanks for the help PV.
by Archer321
Apr 22 2019 11:20am
Forum: Motor Technology
Topic: Controller suggestions??
Replies: 60
Views: 2711

Re: Controller suggestions??

Yeah, no combination of phase wires made it run any better.
If this controller can't start this motor from a standstill then it's worthless to me.
I'll try spinning the motor up with a drill though just to check.
I'll let you know.
by Archer321
Apr 21 2019 8:55pm
Forum: Motor Technology
Topic: Controller suggestions??
Replies: 60
Views: 2711

Re: Controller suggestions??

The "ignition" connector contains two small wires, one red, and one orange. The red has battery voltage on it and the orange has nothing. When I jump them together my CycleAnalyst powers up but nothing else happens. Proving beyond doubt that the red wire on the ignition connector is directly tied t...
by Archer321
Apr 21 2019 7:58pm
Forum: Motor Technology
Topic: Controller suggestions??
Replies: 60
Views: 2711

Re: Controller suggestions??

I tried that too. No difference. Besides, as the red wire has battery voltage on it already, what would change? Um, the MCU is powered by the orange wire. So basically nothing will happen if either the orange or red "ignition" wires are not both powered by your (switched) battery voltage. Why do yo...