Comments for Procrastinatus

Comment on Alternator Motor Update by aonomus

aonomus — Wed, 11 Nov 2009 19:00:29 +0000

The stator wattage (stationary windings) was based off of 13.8V at 10A (138W), any higher than 10A and the ESC lost sync.

As for the rotor, it only used maybe 2-4V at 1-2A (approx).

As with any brushless motor, peak efficiency would be at high RPMs, thus you would want to use a gearbox to significantly step down the ratio and give lots of torque while not straining the motor.

Comment on Alternator Motor Update by ridenfly

ridenfly — Wed, 11 Nov 2009 16:00:28 +0000

In the video it appears you are using a brushless R/C speed control with a servo tester as control. Were you able to check the stator wattage? Have you done any further testing as I am working on a similar project. I have a Ural ( Russian M/C with sidecar)which has great off road capabilities but lacks the very low speed torque to creep over obsticals, It has a Denso 45a alternator which by switching,I want to have an altermotor and alternator. The altermotor would be used for two minutes or less of assistance but would like max torque at that time. The altmtr. would operate from 4 to 6k RPM.
Any thoughts you have will be greatly appreciated.
Thanks, Walt

Comment on Alternator Motor Update by aonomus

aonomus — Tue, 10 Nov 2009 04:04:27 +0000

Yes, thats what the video shows, the ESC is ramped to full power, then the rotor current is decreased, reducing the back EMF on the ESC, letting more power into the motor.

Comment on Alternator Motor Update by Erlend^SE

Erlend^SE — Mon, 09 Nov 2009 03:29:03 +0000

Have you tried different rotor-currents?

Apparently you can make it spin pretty fast by using low current (weak field)

Comment on I wonder what we have here…. by aonomus

aonomus — Thu, 05 Nov 2009 19:37:44 +0000

Actually a 1000mL RBF.

Keep in mind that UGT does custom packages, and also has an ebay store, look around for the best prices. UGT has one of the better selections for common glassware (some things are more expensive than expected though, such has hardware/clamps/stands).

Comment on I wonder what we have here…. by worldspawn

worldspawn — Thu, 05 Nov 2009 19:13:26 +0000

Keck clips! And I think I see a beautiful 2000ml RBF.

Very, very nice. I think I’ll be buying from United next. Their prices for 3-necks and giant boiling flasks are definitely reasonable.

How did the heated stir plate hunt go?

Comment on Desulfator build and Lead Acid Revisit by shubham tiwari

shubham tiwari — Sat, 17 Oct 2009 11:56:03 +0000

excellent circuit sir,had great fun building it….the bets part is that this circuit has all easy to find and cheaply available parts,,
i had made 2 of this circuit and they both are working great,also added an led indicator to indicate working and a 15v zener diode….

anyways want to thank you for your great work…
please reply so that i can send the pictures….
and please let me know if any further improvements can be don in it.

thanking you
shubham tiwari
email– shubhamforme@gmail.com

Comment on Using a car alternator as a ‘brushless’ motor by Alternator Motor Update « Procrastinatus

Alternator Motor Update « Procrastinatus — Sun, 20 Sep 2009 14:35:06 +0000

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Comment on Revive ‘dead’ sealed lead acid UPS batteries by aonomus

aonomus — Tue, 25 Aug 2009 17:12:01 +0000

Its not a absolute fix, because its so hard to tell what failure mode the battery suffers from. Good luck though

Comment on Revive ‘dead’ sealed lead acid UPS batteries by Larry Baxter

Larry Baxter — Tue, 25 Aug 2009 15:57:46 +0000

Thanx for info. Will try technique. Tired of wasting money on replacing these batts.